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Wu C, Yang J, Lin X, Wu J, Yang C, Chen S. LncRNA PRKCA-AS1 promotes LUAD progression and function as a ceRNA to regulate S100A16 by sponging miR-508-5p. J Cancer 2024; 15:1718-1730. [PMID: 38370382 PMCID: PMC10869986 DOI: 10.7150/jca.91184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/04/2024] [Indexed: 02/20/2024] Open
Abstract
Objective: This study aimed to elucidate the underlying mechanism of LncRNA PRKCA-AS1 in lung adenocarcinoma (LUAD). Methods: The expression of LncRNA PRKCA-AS1, miR-508-5p and S100A16, in LUAD tissues or cell lines (NCI-H520 and H1299) was analyzed with qRT-PCR. The clinical diagnostic value of LncRNA PRKCAAS1, miR-508-5p and S100A16 in LUAD were analyzed by receptor operating characteristic (ROC) curve. Then we knockdown or overexpression of PRKCAAS1 in NCI-H520 and H1299 cells, and the cell function test was applied to detect the activity and metastasis level of cells in different transfection groups. Then Pearson correlation analysis was used for the correlation between miR-508-5p and PRKCA-AS1. The dual-luciferase reporter experiment and CHIRP analysis was conducted to verify the target binding relationship of PRKCA-AS1, miR-508-5p or S100A16. FISH assay analyzed the colocalization of PRKCA-AS1 and miR-508-5p in NCI-H520 and H1299 cells. Rescue experiment and tumorigenesis experiment in nude mice further explore the regulatory mechanisms of LncRNA PRKCA-AS1, miR-508-5p and S100A16 on LUAD progression in vitro and in vivo. Results: From the results, PRKCA-AS1 and S100A16 were up-regulated in LUAD tissues, while miR-508-5p was downregulated compared with the adjacent tissues. And gain-of-function revealed that PRKCA-AS1 knock-down apparently suppressed the cell proliferation and metastasis, whereas miR-508-5p inhibitors or S100A16 overexpression showed a opposite effect. In addition, there is evidence that PRKCA-AS1, miR-508-5p and S100A16 have a targeted regulatory relationship. Moreover, rescue experiment and tumorigenesis experiment in nude mice further confirmed that LncRNA PRKCA-AS1 regulates S100A16 through sponging miR-508-5p to regulate LUAD progression in vitro and in vivo. Conclusion: These results demonstrated that LncRNA PRKCA-AS1 might regulate LUAD by acting as a ceRNA via sponging miR-508-5p and regulating S100A16 expression, indicating that manipulation of PRKCA-AS1 might be a potential therapeutic strategy in LUAD.
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Affiliation(s)
- Chaohui Wu
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, 362000, China
| | - Jiansheng Yang
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, 362000, China
| | - Xianbin Lin
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, 362000, China
| | - Jingyang Wu
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, 362000, China
| | - Chuangcai Yang
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian, 362000, China
| | - Shuchen Chen
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, 350001, China
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Huang KCY, Lee CY, Wu CH, Sung CY, Chen WTL, Ke TW, Liang JA, Lai CY, Hong WZ, Chuang EY, Chao KSC. Neoantigen Cancer Vaccine for Immunologically Cold Microsatellite-stable Colorectal Cancer. Int J Radiat Oncol Biol Phys 2023; 117:S71. [PMID: 37784559 DOI: 10.1016/j.ijrobp.2023.06.378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Immunotherapies, such as immune checkpoint inhibitors (ICIs), have revolutionized management of some cancers but have little benefit for microsatellite-stable colorectal cancer patients (MSS-CRC). This is, in part, due to the low mutations and neoantigen expression in this immunogenically "cold" MSS-CRC. Therefore, we aim to develop novel shared neoantigen-based therapeutic cancer vaccine to reinvigorate antitumor immunity and enhance the therapeutic benefit of radiotherapy in MSS-CRC. MATERIALS/METHODS To identify novel highly expressed and shared neoantigens, we collected 40 match-paired adjacent normal and tumor tissues from MSS-CRC patients for WES-seq, RNA-seq, and liquid chromatography-MS/MS (LC-MS/MS). By incorporating these databases, we established Neoantigen Discovery and Validation (NeoDiva) system to identify a cluster of highly expressed and shared neoantigens derived from non-coding regions and evaluate its immunogenicity by HLA-A*11 transgenic mice. We then develop a neoantigen-based therapeutic cancer vaccine by an engineered adenovirus-associated virus (AAV) to evaluate its therapeutic efficacy in combination with radiotherapy in MSS-CRC animal model. RESULTS We identified a cluster of highly expressed and shared neoantigens (HLA-A*11-restricted) derived from non-coding regions. The immunogenicity of these novel neoantigens was demonstrated by HLA-A*11 transgenic mice and ex vivo stimulation. Moreover, the engineered AAV-based neoantigen cancer vaccine significantly eradicates cancer cells, prevents distant metastasis, prolong survival period in combination with radiotherapy. By flow cytometry, ELISPOT and MHC-I-tetramer assay, we demonstrated the recruitment of tumor-infiltrating lymphocytes was remarkably increased and neoantigen-specific T cell response was enhanced. Moreover, these isolated neoantigen-specific T cells can recognize cancer cells and produce IFNg to kill cancer cells. CONCLUSION Neoantigens identified by our NeoDiVa platform, via the combination of radiotherapy and a novel AAV vaccine delivery system, boosted antigen-specific T-cell function and improve tumor control of limnologically "cold" MSS colorectal cancer in vivo. We are in the process of obtaining an IND and initiating Phase I/II clinical trial to validate safety and efficacy of these exciting findings.
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Affiliation(s)
- K C Y Huang
- China Medical University, Taichung, Taiwan; China Medical University Hospital, Taichung, Taiwan
| | - C Y Lee
- China Medical University, Taichung, Taiwan
| | - C H Wu
- China Medical University, Taichung, Taiwan; National Taiwan University, Taipei, Taiwan
| | - C Y Sung
- National Taiwan University, Taipei, Taiwan
| | - W T L Chen
- China Medical University Hospital, Taichung, Taiwan
| | - T W Ke
- China Medical University Hospital, Taichung, Taiwan
| | - J A Liang
- China Medical University Hospital, Taichung, Taiwan
| | - C Y Lai
- China Medical University Hospital, Taichung, Taiwan
| | - W Z Hong
- China Medical University Hospital, Taichung, Taiwan
| | - E Y Chuang
- China Medical University, Taichung, Taiwan; National Taiwan University, Taipei, Taiwan
| | - K S C Chao
- Department of Radiation Oncology, China Medical University Hospital, China Medical University, Taichung, Taiwan
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Zhang MX, Wang JH, Zhang L, Yan JX, Wu CH, Pei RX, Lyu YJ, Song L, Cui M, Ding L, Wang ZL, Wang JT. [The characteristics and correlations of vaginal flora in women with cervical lesions]. Zhonghua Zhong Liu Za Zhi 2023; 45:253-258. [PMID: 36944546 DOI: 10.3760/cma.j.cn112152-20211024-00782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Objective: To explore the characteristics and correlations of vaginal flora in women with cervical lesions. Methods: A total of 132 women, including 41 women diagnosed with normal cervical (NC), 39 patients with low-grade cervical intraepithelial neoplasia (CIN 1), 37 patients with high-grade cervical intraepithelial neoplasia (CIN 2/3) and 15 patients with cervical squamous cell carcinoma (SCC), who came from the gynecological clinic of Second Hospital of Shanxi Medical University during January 2018 to June 2018, were enrolled in this study according to the inclusive and exclusive criteria strictly. The vaginal flora was detected by 16S rDNA sequencing technology. Co-occurrence network analysis was used to investigate the Spearman correlations between different genera of bacteria. Results: The dominant bacteria in NC, CIN 1 and CIN 2/3 groups were Lactobacillus [constituent ratios 79.4% (1 869 598/2 354 098), 63.6% (1 536 466/2 415 100) and 58.3% (1 342 896/2 301 536), respectively], while Peptophilus [20.4% (246 072/1 205 154) ] was the dominant bacteria in SCC group. With the aggravation of cervical lesions, the diversity of vaginal flora gradually increased (Shannon index: F=6.39, P=0.001; Simpson index: F=3.95, P=0.012). During the cervical lesion progress, the ratio of Lactobacillus gradually decreased, the ratio of other anaerobes such as Peptophilus, Sneathia, Prevotella and etc. gradually increased, and the differential bacteria (LDA score >3.5) gradually evolved from Lactobacillus to other anaerobes. The top 10 relative abundance bacteria, spearman correlation coefficient>0.4 and P<0.05 were selected. Co-occurrence network analysis showed that Prevotella, Peptophilus, Porphyrinomonas, Anaerococcus, Sneathia, Atopobium, Gardnerella and Streptococcus were positively correlated in different stages of cervical lesions, while Lactobacillus was negatively correlated with the above anaerobes. It was found that the relationship between vaginal floras in CIN 1 group was the most complex and only Peptophilus was significantly negatively correlated with Lactobacillus in SCC group. Conclusions: The increased diversity and changed correlations between vaginal floras are closely related to cervical lesions. Peptophilus is of great significance in the diagnosis, prediction and early warning of cervical carcinogenesis.
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Affiliation(s)
- M X Zhang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J H Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Zhang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J X Yan
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - C H Wu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - R X Pei
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Cui
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z L Wang
- Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Cui Y, Wang SW, Zhou B, Han EL, Liu ZF, Wu CH, Mei FY, Lu XF, Chen WK. [Minimally invasive right infra-axillary thoracotomy for transaortic modified Morrow procedure: a series of 60 cases]. Zhonghua Wai Ke Za Zhi 2023; 61:209-213. [PMID: 36650966 DOI: 10.3760/cma.j.cn112139-20221014-00439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Objective: To examine the short-term curative effect with minimally invasive right infra-axillary thoracotomy for transaortic modified Morrow procedure. Methods: The clinical data of 60 patients who underwent video-assisted thoracoscopic transaortic modified Morrow procedure from August 2021 to August 2022 at Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital were retrospectively analyzed. There were 31 males and 29 females, with the age (M (IQR)) of 54.0(22.3) years (range: 15 to 71 years). The echocardiography confirmed the diagnosis of moderate mitral regurgitation in 30 patients, and severe mitral regurgitation in 13 patients. Systolic anterior motion (SAM) was present preoperatively in 54 patients. All 60 patients underwent transaortic modified Morrow procedure through a right infra-axillary thoracotomy using femorofemoral cardiopulmonary bypass. Surgical procedures mainly included transverse aortic incision, exposure of left ventricular outflow tract (LVOT), septal myectomy, and correction of the abnormal mitral valve and subvalvular structures. Results: All 60 patients underwent the programmatic procedures successfully without conversion to full sternotomy. The cardiopulmonary bypass time was (142.0±32.1) minutes (range: 89 to 240 minutes), while the cross-clamp time was (95.0±23.5) minutes (range: 50 to 162 minutes). The patients had a postoperative peak LVOT gradient of 7.0 (5.0) mmHg (range: 0 to 38 mmHg) (1 mmHg=0.133 kPa). A total of 57 patients were extubated on the operating table. The drainage volume in the first 24 h was (175.9±57.0) ml (range: 60 to 327 ml). The length of intensive care unit stay was 21.0 (5.8)h (range: 8 to 120 h) and postoperative hospital stay was 8 (5) days (range: 5 to 19 days). The postoperative septal thickness was 11 (2) mm (range: 8 to 14 mm). All patients had no iatrogenic ventricular septal perforation or postoperative residual SAM. The patients were followed up for 4 (9) months (range: 1 to 15 months), and none of them needed cardiac surgery again due to valve dysfunction or increased peak LVOT gradient during follow-up. Conclusion: Using a video-assisted thoracoscopic transaortic modified Morrow procedure through a right infra-axillary minithoracotomy can provide good visualization of the LVOT and hypertrophic ventricular septum, ensure optimal exposure of the mitral valve in the presence of complex mitral subvalvular structures, so that allows satisfactory short-term surgical results.
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Affiliation(s)
- Y Cui
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - S W Wang
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - B Zhou
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - E L Han
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - Z F Liu
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - C H Wu
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - F Y Mei
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - X F Lu
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
| | - W K Chen
- Department of Cardiovascular Surgery, Zhejiang Provincial People's Hospital (People's Hospital of Hangzhou Medical College), Hangzhou 310014, China
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Wu C, Yang J, Lin X, Li R, Wu J. miR-508-5p serves as an anti-oncogene by targeting S100A16 to regulate AKT signaling and epithelial-mesenchymal transition process in lung adenocarcinoma cells. Am J Med Sci 2023; 365:520-531. [PMID: 36967030 DOI: 10.1016/j.amjms.2023.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 01/13/2022] [Accepted: 02/14/2023] [Indexed: 03/30/2023]
Abstract
BACKGROUND Our aim was to expose the effect of miR-508-5p on the developmental and biological behaviour of lung adenocarcinoma (LUAC). METHODS The KM plotter was used to analyze the survival significance of miR-508-5p and S100A16 expression in LUAC patients. qRT-PCR was performed to detect the expression of miR-508-5p and S100A16 in LUAC tissue and LUAC cell lines. CCK8, colony formation and Transwell were performed to evaluate the effects of miR-508-5p and S100A16 on cell proliferation and metastasis. Dual luciferase reporter assay was used to verify that S100A16 were targets of miR-508-5p. Western blot analysis was performed to analyze protein expression. RESULTS Results showed that low miR-508-5p expression in LUAC tissues indicated poorer overall survival of LUAC patients and miR-508-5p was downregulated in LUAC cell lines compared to the normal human lung epithelial cell line. miR-508-5p mimics could inhibit A549 cell proliferation and metastasis abilities, while miR-508-5p Antagomir showed the opposite effect. We identified S100A16 as one direct target of miR-508-5p, and rescuing S100A16 expression could reverse the effect of miR-508-5p mimics on A549 cell proliferation and metastasis. miR-508-5p could involve the coordination of AKT signaling and epithelial-mesenchymal transition (EMT) progress using western-blot assays and rescuing S100A16 expression could reverse the inhibited AKT signaling and EMT progress induced by miR-508-5p mimics. CONCLUSIONS We found that miR-508-5p targeted S100A16 to regulate AKT signaling and EMT progress in A549 cells, resulting in impaired cell proliferation and metastasis activity, suggesting that miR-508-5p might be a promising therapeutic target and an important diagnostic and prognostic marker for improved LUAC therapeutic schedule.
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Affiliation(s)
- Chaohui Wu
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China.
| | - Jiansheng Yang
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Xianbin Lin
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Rongbin Li
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China
| | - Jingyang Wu
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian 362000, China
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Yung KL, Tsang YP, Wu CH, Ip WH. An autonomous, multi-agent, IoT-empowered space logistics system for mission-critical inventory packing. ISA Trans 2023; 132:167-181. [PMID: 36404152 DOI: 10.1016/j.isatra.2022.10.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 10/26/2022] [Accepted: 10/26/2022] [Indexed: 06/16/2023]
Abstract
In recent aerospace missions, space logistics have proven essential in storing, delivering and returning crew and materials between terrestrial facilities and space stations. Unlike classical commercial logistics, space logistics operations are cost-prohibitive and mission-driven, and its replenishment cycle for essential materials is relatively long. Therefore, the complete utilisation of spacecraft payload is of utmost importance. The theory of the inventory packing problem is extended in this study to build autonomous agents that interact with one another within a space logistics decision support system to reinforce the replenishment decision, chunk loading optimisation, and quality inspection. With the long replenishment cycle time, an agent embedded with interval type-2 fuzzy logic is explored to support chaotic time-series demand forecasting to derive re-order quantities in the desired period. Afterwards, the second agent solves the space chunk loading problem using the differential evolution algorithm to utilise payloads and capacities, particularly cylindrical chunks fully. The third agent measures actual item dimensions and quality to deploy the three-dimensional object scanning devices. Feedback is provided to the second agent to derive optimal chunk-loading instructions. Thanks to the autonomous interactions among the above agents, mission-critical decisions for space logistics are supported to achieve operational excellence.
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Affiliation(s)
- K L Yung
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region
| | - Y P Tsang
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region
| | - C H Wu
- Department of Supply Chain and Information Management, The Hang Seng University of Hong Kong, Hong Kong Special Administrative Region.
| | - W H Ip
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong Special Administrative Region; Department of Mechanical Engineering, University of Saskatchewan, Canada
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Ye L, You X, Zhou J, Wu C, Ke M, Wu W, Huang P, Lin C. Physiologically based pharmacokinetic modeling of daptomycin dose optimization in pediatric patients with renal impairment. Front Pharmacol 2022; 13:838599. [PMID: 36052120 PMCID: PMC9424659 DOI: 10.3389/fphar.2022.838599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2021] [Accepted: 07/04/2022] [Indexed: 11/13/2022] Open
Abstract
Background and Objective: Daptomycin is used to treat Gram-positive infections in adults and children and its dosing varies among different age groups. We focused on the pharmacokinetics of daptomycin in children with renal impairment, which has not been evaluated.Methods: A physiologically based pharmacokinetic (PBPK) model of daptomycin was established and validated to simulate its disposition in healthy populations and adults with renal impairment, along with a daptomycin exposure simulated in pediatric patients with renal impairment.Results: The simulated PBPK modeling results for various regimens of intravenously administered daptomycin were consistent with observed data according to the fold error below the threshold of 2. The Cmax and AUC of daptomycin did not differ significantly between children with mild-to-moderate renal impairment and healthy children. The AUC increased by an average of 1.55-fold and 1.85-fold in severe renal impairment and end-stage renal disease, respectively. The changes were more significant in younger children and could reach a more than 2-fold change. This scenario necessitates further daptomycin dose adjustments.Conclusion: Dose adjustments take into account the efficacy and safety of the drug; however, the steady-state Cmin of daptomycin may be above 24.3 mg/L in a few instances. We recommend monitoring creatine phosphokinase more than once a week when using daptomycin in children with renal impairment.
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Wu C, Fan Z, Lu D, Wu X, Du Y, Guo X. Insight into the contribution of cerium oxide to MnOx/CeO2 in methanol oxidation reaction: Perspective from the crystal facet of CeO2. ChemCatChem 2022. [DOI: 10.1002/cctc.202200159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Chaohui Wu
- Taiyuan University of Technology Department of Chemistry and Chemical Engineering CHINA
| | - Zhaoyang Fan
- Taiyuan University of Technology Department of Chemistry and Chemical Engineering CHINA
| | - Dong Lu
- Taiyuan University of Technology Department of Chemistry and Chemical Engineering CHINA
| | - Xu Wu
- Taiyuan University of Technology College of Chemistry and Chemical Engineering 79 Yingze West Street 030024 Taiyuan CHINA
| | - Yali Du
- Jinzhong University Department of Chemistry and Chemical Engineering CHINA
| | - Xingmei Guo
- Taiyuan University of Technology Department of Chemistry and Chemical Engineering CHINA
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Wu CH, Tang YM, Tsang YP, Chau KY. Immersive Learning Design for Technology Education: A Soft Systems Methodology. Front Psychol 2022; 12:745295. [PMID: 34975635 PMCID: PMC8719480 DOI: 10.3389/fpsyg.2021.745295] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/29/2021] [Indexed: 11/13/2022] Open
Abstract
Science, technology, engineering and mathematics (STEM) education is a globalized trend of equipping students to facilitate technological and scientific developments. Among STEM education, technology education (TE) plays a significant role in teaching applied knowledge and skills to create and add value to systems and products. In higher education, the learning effectiveness of the TE assisted by the immersive technologies is an active research area to enhance the teaching quality and learning performance. In this study, a taught subject of radio frequency identification (RFID) assisted by using mixed reality technologies in a higher education institution was examined, while the soft systems methodology (SSM) was incorporated to evaluate the changes in learning performance. Under the framework of SSM, stakeholders’ perceptions toward immersive learning and RFID education are structured. Thus, a rich picture for teaching activities is established for subject control, monitoring, and evaluation. Subsequently, the design of TE does not only satisfy the students’ needs but also requirements from teachers, industries, and market trends. Finally, it is found that SSM is an effective approach in designing courses regarding hands-on technologies, and the use of immersive technologies improves the learning performance for acquiring fundamental knowledge and application know-how.
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Affiliation(s)
- C H Wu
- Department of Supply Chain and Information Management, The Hang Seng University of Hong Kong, Shatin, Hong Kong SAR, China
| | - Y M Tang
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China.,Faculty of Business, City University of Macau, Macao, Macau SAR, China
| | - Y P Tsang
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR, China
| | - K Y Chau
- Faculty of Business, City University of Macau, Macao, Macau SAR, China
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Du Y, Lu D, Liu J, Li X, Wu C, Wu X, An X. Insight into the potential application of CuO x/CeO 2 catalysts for NO removal by CO: a perspective from the morphology and crystal-plane of CeO 2. NEW J CHEM 2022. [DOI: 10.1039/d2nj03542a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of CuOx/CeO2-X were fabricated and employed as the NO + CO reaction catalysts.
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Affiliation(s)
- Yali Du
- College of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, P. R. China
| | - Dong Lu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Jiangning Liu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xiaodong Li
- College of Chemistry and Chemical Engineering, Jinzhong University, Jinzhong 030619, P. R. China
| | - Chaohui Wu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xu Wu
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Xia An
- College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
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Wu CH, Pei RX, Yan JX, Ding L, Lyu YJ, Song L, Wang J, Meng D, Liu H, Qi Z, Hao M, Wang JT. [The effect of red blood cell folate on the prognosis of high-risk human papillomavirus infection: a community-based cohort study]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:2174-2178. [PMID: 34954983 DOI: 10.3760/cma.j.cn112338-20210408-00291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Objective: To investigate the effect of red blood cell folate on the prognosis of high-risk human papillomavirus (HR-HPV) infection. Methods: A total of 564 participants with low-grade cervical intraepithelial neoplasias (CINⅠ) were selected from the community-based married women cohort established in 2014. The general baseline information and factors related to HPV infection were collected. Meanwhile, HPV genotyping and levels of folate were measured. The subjects were divided into different levels of exposure group according to the folate levels and followed up for 24 months to observe the changes of HR-HPV infection status. There were four changes, including persistent infection, infection turned negative, from negative to positive and constant negative by comparing HR-HPV infection status at baseline and follow-up to 24 months. Results: 483 participators completed 24 months of follow-up observation, with a follow-up rate of 85.64% (483/564). The rates of persistent infection, infection turned negative, from negative to positive, and the constant negative were 52.45% (75/143), 47.55% (68/143), 19.71% (67/340), 80.29% (273/340), respectively. Our results demonstrated that the risk of persistent infection (aRR=2.50, 95%CI: 1.55-4.02) and from negative to positive (aRR=4.55, 95%CI: 2.52-8.23) in the low level of folate were significantly higher than that in the high level of folate, especially the risk of homotype persistent infection (aRR=2.72, 95%CI: 1.51-4.90). The risk of persistent infection (trend χ2=20.62, P<0.001), from negative to positive (trend χ2=31.76, P<0.001), persistent homotypic infection (trend χ2=20.09, P<0.001) increased with the decrease of red blood cell folate level. On the contrary, no similar results were found in persistent heterotypic infection. Conclusions: A low level of red blood cell folate could increase the risk of HR-HPV persistent infection and from negative to positive. In women with HR-HPV infection, the risk of persistent homotypic infection is higher.
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Affiliation(s)
- C H Wu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - R X Pei
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J X Yan
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Ma C, Duan Y, Wu C, Meng E, Li P, Zhang Z, Zang C, Ren X. Spatiotemporally co-delivery of triple therapeutic drugs via HA-coating nanosystems for enhanced immunotherapy. Asian J Pharm Sci 2021; 16:653-664. [PMID: 34849170 PMCID: PMC8609441 DOI: 10.1016/j.ajps.2021.07.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 07/13/2021] [Accepted: 07/28/2021] [Indexed: 11/28/2022] Open
Abstract
There is growing empirical evidence that certain types of chemotherapy and phototherapy trigger immunogenic cell death and enhance the therapeutic anticancer efficacy of genetic immunotherapy. However, the main challenge is spatiotemporally co-delivering different drugs to maximize the therapeutic index of the combination therapy. In this study, a drug delivery system (HTCP-Au/shPD-L1/DOX) was designed with a polysaccharide-wrapped shell and a condensed DNA core. To construct the HTCP-Au vector, dodecyl side chains with a polyethylenimine (PEI) head were grafted onto hyaluronic acid, and AuNPs were grafted via Au-S bonds. During drug loading, PEI arrested shRNA plasmid DNA targeting programmed cell death ligand 1 (shPD-L1) via electrostatic interactions. It also formed a PEI-DNA core that was automatically enclosed when aliphatic hydrocarbons pulled the hyaluronic acid backbone. A hydrophobic interlayer consisting of dodecyl bridge chains between the PEI-DNA core and the hyaluronic acid shell was required to accommodate hydrophobic doxorubicin. In vitro and in vivo assays demonstrated that this core-shell drug delivery system could efficiently load and transport three different drugs and effectively target tumors. Moreover, it could activate the immune system, thereby providing promising therapeutic efficacy against tumor growth and metastasis.
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Affiliation(s)
- Chaoqun Ma
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Yichao Duan
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Chaohui Wu
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Erjuan Meng
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Pingping Li
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Zhenzhong Zhang
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Chunhua Zang
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
| | - Xueling Ren
- Key Laboratory of Targeting Therapy and Diagnosis for Critical Diseases, School of Pharmaceutical Science, Zhengzhou University, Zhengzhou 450001, China
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Pei RX, Wu CH, Yan JX, Ding L, Song L, Lyu YJ, Wang J, Liu H, Meng D, Qi Z, Hao M, Wang JT. [Effects of polycyclic aromatic hydrocarbons exposure on prognosis of high risk human papillomavirus infection: a prospective cohort study]. Zhonghua Liu Xing Bing Xue Za Zhi 2021; 42:2060-2065. [PMID: 34818855 DOI: 10.3760/cma.j.cn112338-20210406-00278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Objective: To investigate the effects of polycyclic aromatic hydrocarbons (PAHs) exposure on the prognosis of high risk human papillomavirus (HR-HPV) infection. Methods: In this prospective study, 564 patients with low-grade cervical intraepithelial neoplasia confirmed by pathology were selected from the natural cohort population established by our research group in Shanxi province in 2014. Based on the baseline data of demographic characteristics and factors related to HPV infection, the concentrations of 1-hydroxypyrene in urine samples of the patients were determined by high performance liquid chromatography to define the exposure level of PAHs. At baseline survey and follow-up after 24 months, flow-through hybridization was used to detect HPV infection types, and to evaluate the prognosis of HR-HPV (persistent infection, negative conversion, positive conversion and persistent negative status). Results: Of the 564 subjects, 483 completed the follow-up, with a follow-up rate of 85.6% (483/564). Among them, the persistent infection rate was 52.4% (75/143), the persistent homotype infection rate was 35.7% (51/143), the negative conversion rate was 47.6% (68/143), the positive conversion rate was 19.7% (67/340), and the persistent negative rate was 80.3% (273/340). The follow-up results showed that the persistent infection rate (aRR=3.22, 95%CI: 1.85-5.62) and positive conversion rate (aRR=2.84, 95%CI: 1.64-4.94) of HR-HPV in high PAHs exposure group were higher than those in low PAHs exposure group, while the persistent negative rate (aRR=0.55, 95% CI: 0.43-0.70) of HR-HPV in high PAHs exposure group were lower than those in low PAHs exposure group. Based on restrictive cubic spline analysis, the results showed that the effects of PAHs exposure on persistent HR-HPV infection and persistent homotype infection showed an ascending linear dose-response relationship, while on HR-HPV positive conversion and persistent negative status showed an ascending and declining nonlinear dose-response relationship respectively (P<0.01). Conclusions: High PAHs exposure could promote persistent HR-HPV infection and persistent homotypic infection. Reducing PAHs exposure might conducive to HR-HPV continuous negative maintenance. Active prevention and control of PAHs exposure is of great significance to prevent HR-HPV infection and persistent infection.
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Affiliation(s)
- R X Pei
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - C H Wu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J X Yan
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Ding
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - L Song
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Y J Lyu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - J Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - H Liu
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - D Meng
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Z Qi
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - M Hao
- Department of Obstetrics and Gynecology, Second Hospital of Shanxi Medical University, Taiyuan 030001, China
| | - J T Wang
- Department of Epidemiology, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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Ho TH, Wu CH, Han TY, Syu WJ. Mineralization of sulfonamides from wastewater using ozone-based systems. Water Sci Technol 2021; 84:1379-1388. [PMID: 34559073 DOI: 10.2166/wst.2021.325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Ozone, UV/ozone, ozone/persulfate (PS) and UV/ozone/PS systems were used to mineralize sulfonamides. Sulfadiazine (SDZ), sulfamerazine (SMR) and sulfamethazine (SMZ) were the target compounds. The novel contribution of this study is its determination of the effects of PS addition, sulfonamide structure, pH and salinity on sulfonamide mineralization in ozone-based systems. The mineralization rate of sulfonamides satisfied pseudo-first-order kinetics. The SMZ mineralization rate constant in ozone, UV/ozone, ozone/PS and UV/ozone/PS systems at pH 5 were 0.0058; 0.0101; 0.0069 and 0.0802 min-1, respectively, and those at pH 7 were 0.0075; 0.0116; 0.0083 and 0.0873 min-1, respectively. The increase in the number of methyl substituents in the heterocyclic group of SMZ and the corresponding increase in the steric hindrance of radical addition, reduced mineralization rates below those of SMR and SDZ. The addition of PS promoted sulfonamide mineralization in the ozone-based systems; conversely, salinity inhibited sulfonamide mineralization.
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Affiliation(s)
- T H Ho
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung, Taiwan E-mail:
| | - C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung, Taiwan E-mail:
| | - T Y Han
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung, Taiwan E-mail:
| | - W J Syu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung, Taiwan E-mail:
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Tang YM, Chen PC, Law KMY, Wu CH, Lau YY, Guan J, He D, Ho GTS. Comparative analysis of Student's live online learning readiness during the coronavirus (COVID-19) pandemic in the higher education sector. Comput Educ 2021; 168:104211. [PMID: 33879955 PMCID: PMC8049721 DOI: 10.1016/j.compedu.2021.104211] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 03/02/2021] [Accepted: 04/02/2021] [Indexed: 05/04/2023]
Abstract
Amid the coronavirus outbreak, many countries are facing a dramatic situation in terms of the global economy and human social activities, including education. The shutdown of schools is affecting many students around the world, with face-to-face classes suspended. Many countries facing the disastrous situation imposed class suspension at an early stage of the coronavirus outbreak, and Asia was one of the earliest regions to implement live online learning. Despite previous research on online teaching and learning, students' readiness to participate in the real-time online learning implemented during the coronavirus outbreak is not yet well understood. This study explored several key factors in the research framework related to learning motivation, learning readiness and student's self-efficacy in participating in live online learning during the coronavirus outbreak, taking into account gender differences and differences among sub-degree (SD), undergraduate (UG) and postgraduate (PG) students. Technology readiness was used instead of conventional online/internet self-efficacy to determine students' live online learning readiness. The hypothetical model was validated using confirmatory factor analysis (CFA). The results revealed no statistically significant differences between males and females. On the other hand, the mean scores for PG students were higher than for UG and SD students based on the post hoc test. We argue that during the coronavirus outbreak, gender differences were reduced because students are forced to learn more initiatively. We also suggest that students studying at a higher education degree level may have higher expectations of their academic achievement and were significantly different in their online learning readiness. This study has important implications for educators in implementing live online learning, particularly for the design of teaching contexts for students from different educational levels. More virtual activities should be considered to enhance the motivation for students undertaking lower-level degrees, and encouragement of student-to-student interactions can be considered.
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Affiliation(s)
- Yuk Ming Tang
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
- City University of Macau, Macau
| | - Pen Chung Chen
- Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong
| | - Kris M Y Law
- School of Engineering, Deakin University, Geelong, Australia
| | - C H Wu
- Department of Supply Chain and Information Management, The Hang Seng University of Hong Kong, Siu Lek Yuen, N.T, Hong Kong
| | - Yui-Yip Lau
- Division of Business and Hospitality Management, College of Professional and Continuing Education, The Hong Kong Polytechnic University, Hong Kong
| | - Jieqi Guan
- School of Hospitality Management, Macao Institute for Tourism Studies, Macau
| | - Dan He
- Center for Modern Chinese City Studies, School of Urban and Regional Science, East China Normal University, Shanghai, China
| | - G T S Ho
- Department of Supply Chain and Information Management, The Hang Seng University of Hong Kong, Siu Lek Yuen, N.T, Hong Kong
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Zeng Z, Wu C, Lin Z, Ye Y, Feng S, Fang Y, Huang Y, Li M, Du D, Chen G, Kang D. Development and validation of a simple-to-use nomogram to predict the deterioration and survival of patients with COVID-19. BMC Infect Dis 2021; 21:356. [PMID: 33863287 PMCID: PMC8050645 DOI: 10.1186/s12879-021-06065-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Accepted: 04/08/2021] [Indexed: 01/08/2023] Open
Abstract
Background COVID-19 pandemic has forced physicians to quickly determine the patient’s condition and choose treatment strategies. This study aimed to build and validate a simple tool that can quickly predict the deterioration and survival of COVID-19 patients. Methods A total of 351 COVID-19 patients admitted to the Third People’s Hospital of Yichang between 9 January to 25 March 2020 were retrospectively analyzed. Patients were randomly grouped into training (n = 246) or a validation (n = 105) dataset. Risk factors associated with deterioration were identified using univariate logistic regression and least absolute shrinkage and selection operator (LASSO) regression. The factors were then incorporated into the nomogram. Kaplan-Meier analysis was used to compare the survival of patients between the low- and high-risk groups divided by the cut-off point. Results The least absolute shrinkage and selection operator (LASSO) regression was used to construct the nomogram via four parameters (white blood cells, C-reactive protein, lymphocyte≥0.8 × 109/L, and lactate dehydrogenase ≥400 U/L). The nomogram showed good discriminative performance with the area under the receiver operating characteristic (AUROC) of 0.945 (95% confidence interval: 0.91–0.98), and good calibration (P = 0.539). Besides, the nomogram showed good discrimination performance and good calibration in the validation and total cohorts (AUROC = 0.979 and AUROC = 0.954, respectively). Decision curve analysis demonstrated that the model had clinical application value. Kaplan-Meier analysis illustrated that low-risk patients had a significantly higher 8-week survival rate than those in the high-risk group (100% vs 71.41% and P < 0.0001). Conclusion A simple-to-use nomogram with excellent performance in predicting deterioration risk and survival of COVID-19 patients was developed and validated. However, it is necessary to verify this nomogram using a large-scale multicenter study. Supplementary Information The online version contains supplementary material available at 10.1186/s12879-021-06065-z.
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Affiliation(s)
- Zhiyong Zeng
- Department of Hematology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China.
| | - Chaohui Wu
- Department of Pharmacy, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Zhenlv Lin
- Department of Emergency, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yong Ye
- Department of Intensive Care Unit, Fujian Provincial Cancer Hospital, Fuzhou, China
| | - Shaodan Feng
- Department of Emergency, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Yingying Fang
- Department of Tuberculosis, the Third People's Hospital of Yichang, Yichang, China
| | - Yanmei Huang
- Department of Hematology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China
| | - Minhua Li
- Department of Hematology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China
| | - Debing Du
- Department of Tuberculosis, the Third People's Hospital of Yichang, Yichang, China.
| | - Gongping Chen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China.
| | - Dezhi Kang
- Department of Neurosurgery, The First Affiliated Hospital of Fujian Medical University, Fuzhou, 350005, China.
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Lin X, Huang R, Huang Y, Wang K, Li H, Bao Y, Wu C, Zhang Y, Tian X, Wang X. Nanosonosensitizer-Augmented Sonodynamic Therapy Combined with Checkpoint Blockade for Cancer Immunotherapy. Int J Nanomedicine 2021; 16:1889-1899. [PMID: 33707944 PMCID: PMC7943542 DOI: 10.2147/ijn.s290796] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Accepted: 02/23/2021] [Indexed: 12/13/2022] Open
Abstract
INTRODUCTION Sonodynamic therapy (SDT) has good targeting and non-invasive advantages in the treatment of solid cancers, and checkpoint blockade immunotherapy is also a promising treatment to cure cancer. However, their antitumor effects are not sufficient due to some inherent factors. Some studies that combined SDT with immunotherapy or nanoparticles have managed to enhance its efficiency to treat cancers. METHODS In this work, an effective therapeutic strategy that can potentiate the antitumor efficacy of anti-PD-L1 antibody (aPD-L1) is developed by the use of cascade immuno-sonodynamic therapy (immuno-SDT). Titanium dioxide (TiO2), a nanostructured agent for SDT, sonosensitizer Chlorin e6 (Ce6), and immunological adjuvant CpG oligonucleotide (CpG ODN), are used to construct a multifunctional nanosonosensitizer (TiO2-Ce6-CpG). Then, we conducted in vitro and in vivo experiments to explore the antitumor effect of TiO2-Ce6-CpG under ultrasound (US) treatment. RESULTS The characterization tests showed that the nanosonosensitizers are polycrystalline structure with homogeneous sizes, resulting in a good drug loading efficiency. The innovative nanosonosensitizers (TiO2-Ce6-CpG) can not only effectively inhibit tumor growth but also stimulate the immune system to activate the adaptive immune responses, using the TiO2-Ce6 to augment SDT and the immune adjuvant CpG to enhance the immune response. After combined with the aPD-L1, the synergistic effect could not only efficiently inhibit the primary tumor growth but also lead to an inhibition of the non-irradiated pre-existing distant tumors by inducing a strong tumor-specific immune response. CONCLUSION In this study, we present an effective strategy for tumor treatment by combining nanosonosensitizer-augmented SDT and aPD-L1 checkpoint blockade. This work provides a promising strategy and offers a new vision for treating malignant tumors.
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Affiliation(s)
- Xiaoning Lin
- Department of Neurosurgery, Zhongshan Hospital Xiamen University, Xiamen, 361004, People’s Republic of China
| | - Rong Huang
- Department of Child Health, Women and Children’s Hospital, Xiamen University, Xiamen, 361003, People’s Republic of China
| | - Yanlin Huang
- Department of Neurosurgery, Zhongshan Hospital Xiamen University, Xiamen, 361004, People’s Republic of China
| | - Kai Wang
- School of Public Health, Xiamen University, Xiamen, 361102, People’s Republic of China
| | - Heng Li
- Department of Neurosurgery, Zhongshan Hospital Xiamen University, Xiamen, 361004, People’s Republic of China
| | - Yiheng Bao
- Department of Neurosurgery, Zhongshan Hospital Xiamen University, Xiamen, 361004, People’s Republic of China
| | - Chaohui Wu
- Department of Thoracic Surgery, Zhongshan Hospital Xiamen University, Xiamen, 361004, People’s Republic of China
| | - Yi Zhang
- Department of Breast Surgery, Xiamen TCM Hospital, Xiamen, 361001, People’s Republic of China
| | - Xinhua Tian
- Department of Neurosurgery, Zhongshan Hospital Xiamen University, Xiamen, 361004, People’s Republic of China
| | - Xiaomin Wang
- Fujian Provincial Key Laboratory of Chronic Liver Disease and Hepatocellular Carcinoma, Zhongshan Hospital Xiamen University, Xiamen, 361004, People’s Republic of China
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Wu C, Yang J, Li R, Lin X, Wu J, Wu J. LncRNA WT1-AS/miR-494-3p Regulates Cell Proliferation, Apoptosis, Migration and Invasion via PTEN/PI3K/AKT Signaling Pathway in Non-Small Cell Lung Cancer. Onco Targets Ther 2021; 14:891-904. [PMID: 33603394 PMCID: PMC7881945 DOI: 10.2147/ott.s278233] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Accepted: 12/04/2020] [Indexed: 12/18/2022] Open
Abstract
Background Non-small cell lung cancer (NSCLC) is one of the most common malignancies with the highest morbidity and mortality worldwide. Long non-coding RNAs (lncRNAs) are recently recognized as noteworthy regulators of different tumors, counting NSCLC. However, the biological functions and regulatory mechanism of lncRNA WT1-AS in NSCLC progression still stay uninvestigated. Methods WT1-AS and miR-494-3p levels in NSCLC cell lines were detected by real-time quantitative polymerase chain reaction (RT-qPCR). In the current study, the regulatory effects of WT1-AS/miR-494-3p axis on cellular behaviors of NSCLC cell lines (A549 and NCI-H1975) were evaluated by a variety of methods. Cell counting kit-8 (CCK-8) and EDU assays were adopted to assess NSCLC cell proliferation. Tunnel staining and flow cytometry assay were applied to determine cell apoptosis and cell cycle distribution. Besides, cell migration and invasion abilities were analyzed by performing wound healing and transwell assays. Meanwhile, the levels of key proteins related to NSCLC cell apoptosis and PTEN/PI3K/AKT pathway were examined using Western blot assay. In addition, luciferase reporter assays were used to determine the interaction between WT1-AS and miR-494-3p or miR-494-3p and PTEN. Results Visibly downregulated WT1-AS in NSCLC cell lines was obtained from Broad Institute Cancer Cell Line Encyclopedia (CCLE) database and further verified by performing RT-qPCR. Besides, miR-494-3p was the downstream target gene of WT1-AS and obviously upregulated miR-494-3p in NSCLC cell lines was confirmed. WT1-AS overexpression suppressed cell proliferation, migration and invasion abilities while enhanced cell apoptosis of A549 and NCI-H1975 cells. Furthermore, upregulation of miR-494-3p distinctly reversed these inhibitory effects of WT1-AS overexpression on the tumorigenesis and progression of NSCLC. In addition, WT1-AS promoted PTEN expression and thereby inhibited activation of PI3K/AKT pathway by sponging miR-494-3p. Conclusion To conclude, lncRNA WT1-AS impeded cell proliferation, migration, invasion but accelerated cell apoptosis via negatively regulating miR-494-3p to mediate PTEN/PI3K/AKT pathway in NSCLC.
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Affiliation(s)
- Chaohui Wu
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, 362000, People's Republic of China
| | - Jiansheng Yang
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, 362000, People's Republic of China
| | - Rongbin Li
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, 362000, People's Republic of China
| | - Xianbin Lin
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, 362000, People's Republic of China
| | - Jiayun Wu
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, 362000, People's Republic of China
| | - Jingyang Wu
- Department of Thoracic and Cardiovascular Surgery, The Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, 362000, People's Republic of China
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You X, Wu CH, Fu YN, He Z, Huang PF, Chen GP, Lin CH, Ming WK, Lin RF. The use of methylprednisolone in COVID-19 patients: A propensity score matched retrospective cohort study. PLoS One 2020; 15:e0244128. [PMID: 33382734 PMCID: PMC7775059 DOI: 10.1371/journal.pone.0244128] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Accepted: 12/03/2020] [Indexed: 12/15/2022] Open
Abstract
PURPOSE To evaluate the efficacy and safety of methylprednisolone in treating the coronavirus disease 2019 (COVID-19) patients. METHODS A retrospective cohort study was conducted, and all COVID-19 patients were recruited who were admitted to the Yichang Third People's Hospital from February 1st to March 31st, 2020. One-to-one propensity score matching (PSM) was used for minimizing confounding effects. The primary outcome was hospital mortality, with the secondary outcomes being the time needed for a positive SARS-CoV-2 nucleic acid test to turn negative and the length of hospital stay. RESULTS Totaling 367 patients with COVID-19 hospitalized at the Yichang Third People's Hospital were identified, of whom 276 were mild or stable COVID-19, and 67 were serious or critically ill. Among them, 255 patients were treated using methylprednisolone, and 188 did not receive any corticosteroid-related treatment. After PSM, no statistically significant difference was found in the baseline characteristics between the two groups. Regarding the outcomes, there also were no statistically significant difference between the two groups. Patients without the use of methylprednisolone were more quickly to obtain negative results of their nasopharyngeal swab tests of SARS-CoV-2 nucleic acid after treatment, compared to those receiving methylprednisolone. CONCLUSION Methylprednisolone could not improve the prognosis of patients with COVID-19, and the efficacy and safety of the use of methylprednisolone in patients with COVID-19 still remain uncertain, thus the use of corticosteroids clinically in patients with COVID-19 should be with cautions.
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Affiliation(s)
- Xiang You
- Department of Pharmacy, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Chao-hui Wu
- Department of Pharmacy, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Ya-nan Fu
- Department of Pharmacy, Yichang Third People’s Hospital, Yichang, China
| | - Zonglin He
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
- Faculty of Medicine, International School, Jinan University, Guangzhou, China
| | - Pin-fang Huang
- Department of Pharmacy, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Gong-ping Chen
- Respiratory Department, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Cui-hong Lin
- Department of Pharmacy, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
| | - Wai-kit Ming
- Department of Public Health and Preventive Medicine, School of Medicine, Jinan University, Guangzhou, China
- Faculty of Medicine, International School, Jinan University, Guangzhou, China
| | - Rong-fang Lin
- Department of Pharmacy, The First Affiliated Hospital of Fujian Medical University, Fuzhou, China
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20
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Wang AM, Wu CH, Huang EH. Removal of sulfamethizole from aqueous solution using advanced oxidation processes: effects of pH and salinity. Water Sci Technol 2020; 82:2425-2431. [PMID: 33339796 DOI: 10.2166/wst.2020.503] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This study investigates the removal of sulfamethizole (SFZ) in ozone (O3), O3/Na2S2O8 (sodium persulfate), UV/Na2S2O8, UV/O3, and UV/O3/Na2S2O8 systems. The effects of pH and salinity on SFZ mineralization were evaluated. The mineralization of SFZ followed pseudo-first-order kinetics. At pH 5, the rate constants of SFZ mineralization in O3, O3/Na2S2O8, UV/Na2S2O8, UV/O3, and UV/O3/Na2S2O8 systems were 0.576, 0.924, 0.702, 1.26, and 5.21 h-1, respectively. The SFZ mineralization rate followed the order pH 5 > pH 7 > pH 9 in all tested advanced oxidation processes. Salinity increased the rate of SFZ mineralization in O3 and O3/Na2S2O8 systems and decelerated it in UV/Na2S2O8, UV/O3, and UV/O3/Na2S2O8 systems. UV/O3/Na2S2O8 was the best system for mineralizing SFZ, and sulfate radicals were the predominant species in UV/O3/Na2S2O8.
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Affiliation(s)
- A M Wang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung, Taiwan E-mail:
| | - C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung, Taiwan E-mail:
| | - E H Huang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, 415 Chien Kung Road, Kaohsiung, Taiwan E-mail:
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21
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Zhang JY, Zhang B, Gong X, Chang J, Jia MN, Liu C, Liang RR, Chen WL, Wu CH, Feng S. Development of a new dynamic foveated imager on wide-angle infra-red thermography system to improve local spatial resolution in EAST. Rev Sci Instrum 2020; 91:116101. [PMID: 33261436 DOI: 10.1063/5.0013212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 10/14/2020] [Indexed: 06/12/2023]
Abstract
A new dynamic foveated imager has been developed and commissioned on the wide-angle infra-red thermography system in the Experimental Advanced Superconducting Tokamak. This technique improves the local spatial resolution by a factor of 2 while maintaining the wide-angle view to ensure safety operation. Taking advantage of the new foveated imager, heat flux splitting under the application of resonant magnetic perturbation (RMP) coils has been clearly observed. The results indicate that the toroidal asymmetric power load pattern is closely related to the perturbation field induced by the RMP coils.
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Affiliation(s)
- J Y Zhang
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - B Zhang
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - X Gong
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - J Chang
- School of Optics and Photonics, Beijing Institute of Technology, Zhongguancun Street, Beijing 100081, People's Republic of China
| | - M N Jia
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - C Liu
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, People's Republic of China
| | - R R Liang
- Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, People's Republic of China
| | - W L Chen
- School of Optics and Photonics, Beijing Institute of Technology, Zhongguancun Street, Beijing 100081, People's Republic of China
| | - C H Wu
- School of Optics and Photonics, Beijing Institute of Technology, Zhongguancun Street, Beijing 100081, People's Republic of China
| | - S Feng
- School of Optics and Photonics, Beijing Institute of Technology, Zhongguancun Street, Beijing 100081, People's Republic of China
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Zhu Q, Zhang W, Wang Q, Liu JH, Wu CH, Luo T, Peng P. [Clinical characteristics and outcome of 64 patients with severe COVID-19]. Zhonghua Jie He He Hu Xi Za Zhi 2020; 43:659-664. [PMID: 32727177 DOI: 10.3760/cma.j.cn112147-20200308-00275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the causes of death in patients with severe COVID-19. Methods: A retrospective analysis was performed on 64 patients with severe COVID-19 admitted to Wuhan Pulmonary Hospital from January 12, 2020 to February 28, 2020. There were 36 males and 28 females, aging from 44 to 85 years[median 68 (62, 72)]. Fifty-two patients (81%) had underlying comorbidities. The patients were divided into the death group (n=40) and the survival group (n=24) according to the treatment outcomes. In the death group, 24 were male, and 16 were female, aging from 49 to 85 years [median 69 (62, 72)], with 31 cases (78%) complicated with underlying diseases. In the survival group, there were 12 males and 12 females, aging from 44 to 82 years[median 66 (61,73)], with 21 cases (88%) with comorbidities. Clinical data of the two groups were collected and compared, including general information, laboratory examinations, imaging features and treatments. For normally distributed data, independent group t test was used; otherwise, Mann Whitney test was used to compare the variables. χ(2) test and Fisher exact test was used when analyzing categorical variables. Results: The median of creatine kinase isozyme (CK-MB) in the death group was 19.0 (17.0,23.0) U/L, which was higher than that in the survival group 16.5 (13.5,19.6) U/L. The median level of cTnI in the death group was 0.03 (0.03, 0.07) μg/L, which was significantly higher than that in the survival group (0.02, 0.03) μg/L, with a statistically significant difference between the two groups (P=0.007). The concentration of myoglobin in the death group was 79.5 (28.7, 189.0) μg/L, which was higher than 33.1 (25.7, 54.5) μg/L in the survival group. The level of D-dimer in the death group was 2.0 (0.6, 5.2) mg/L, which was higher than 0.7 (0.4, 2.0) mg/L in the survival group. The LDH level of the death group was 465.0 (337.5,606.5) U/L, which was higher than that of the survibal group, 341.0 (284.0,430.0) U/L, the difference being statistically significant (P=0.006). The concentration of alanine aminotransferase in the death group was 40.0 (30.0, 48.0) U/L, which was higher than 32.5 (24.0, 40.8) U/L in the survival group, and the difference was statistically significant (P=0.047).Abnormal ECG was found in 16 cases (62%) in the death group, which was significantly higher than that in the survival group (29%), the difference being statistically significant (P=0.024) .The main causes of death were severe pneumonia with acute respiratory distress syndrome (ARDS, n=20), acute heart failure(n=9), atrial fibrillation(n=3) and multiple organ dysfunction syndrome (MODS, n=3). Conclusions: ARDS caused by severe pneumonia and acute heart failure and atrial fibrillation caused by acute viral myocarditis were the main causes of death in severe COVID-19 patients. Early prevention of myocardial injury and treatment of acute viral myocarditis complicated with disease progression may provide insights into treatment and reduction of mortality in patients with severe COVID-19.
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Affiliation(s)
- Q Zhu
- Department of Tuberculosis, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - W Zhang
- Department of Tuberculosis, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - Q Wang
- Department of Tuberculosis, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - J H Liu
- Department of Tuberculosis, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - C H Wu
- Department of Tuberculosis, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - T Luo
- Department of Tuberculosis, Wuhan Pulmonary Hospital, Wuhan 430030, China
| | - P Peng
- Department of Tuberculosis, Wuhan Pulmonary Hospital, Wuhan 430030, China
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Niu T, Wang X, Wu C, Sun D, Zhang X, Chen Z, Fang L. Chemical Modification of Cotton Fabrics by a Bifunctional Cationic Polymer for Salt-Free Reactive Dyeing. ACS Omega 2020; 5:15409-15416. [PMID: 32637815 PMCID: PMC7331042 DOI: 10.1021/acsomega.0c01530] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 06/02/2020] [Indexed: 06/01/2023]
Abstract
Cotton modification exhibited great potential in the fabric dyeing industry. A bifunctional cationic polymer with a moderate cationic degree and low molecular weight was achieved via free radical polymerization between dimethyl diallyl ammonium chloride and allyl glycidyl ether. Then, it was further utilized for the modification of cotton fabrics. The formation of the cationic polymer was identified using Fourier transform infrared and nuclear magnetic resonance spectroscopies. The structure and properties of both treated and untreated cotton were analyzed by X-ray photoelectron spectroscopy and scanning electron microscopy. The modified cotton fabrics could be salt-free dyed with reactive dyes at low temperatures. While obtaining satisfactory color fastness and leveling properties, the dyeability of the modified cotton was improved significantly compared with the conventional dyeing of native cotton. Besides, the prepared cationic polymer has good flocculating properties to avoid secondary pollution, suggesting high potential for achieving an economical and eco-friendly dyeing process.
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Affiliation(s)
- Tianjie Niu
- School
of Chemistry and Chemical Engineering, Qingdao
University, Qingdao 266071, China
| | - Xuemei Wang
- School
of Chemistry and Chemical Engineering, Qingdao
University, Qingdao 266071, China
| | - Chaohui Wu
- Shandong
Chonglong Clothing Co., Ltd., Qingdao 266071, China
| | - Deshuai Sun
- School
of Chemistry and Chemical Engineering, Qingdao
University, Qingdao 266071, China
| | - Xiaodong Zhang
- School
of Chemistry and Chemical Engineering, Qingdao
University, Qingdao 266071, China
| | - Zhaojun Chen
- School
of Chemistry and Chemical Engineering, Qingdao
University, Qingdao 266071, China
| | - Long Fang
- School
of Chemistry and Chemical Engineering, Qingdao
University, Qingdao 266071, China
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Snoj Ž, Wu CH, Taljanovic MS, Dumić-Čule I, Drakonaki EE, Klauser AS. Ultrasound Elastography in Musculoskeletal Radiology: Past, Present, and Future. Semin Musculoskelet Radiol 2020; 24:156-166. [PMID: 32438441 DOI: 10.1055/s-0039-3402746] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Ultrasound elastography (USE) is becoming an important adjunct tool in the evaluation of various musculoskeletal (MSK) traumatic conditions and diseases, with an increasing number of applications and publications in recent years. This rapidly evolving technique enhances the conventional ultrasound (US) examination by providing information on the elastic properties of tissue alongside the morphological and vascular information obtained from B-mode US and Doppler imaging. Those performing USE must have basic knowledge of its proper imaging techniques and limitations. In this review article, we place the USE in historical perspective and discuss basic techniques and current applications of USE in the evaluation of various traumatic and pathologic conditions of fasciae, nerves, muscles, tendons, ligaments, and MSK soft tissue masses.
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Affiliation(s)
- Žiga Snoj
- Radiology Institute, University Medical Centre Ljubljana, Ljubljana, Slovenia.,Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - C H Wu
- Department of Physical Medicine and Rehabilitation, National Taiwan University Hospital College of Medicine, National Taiwan University, Taipei, Taiwan
| | - M S Taljanovic
- Department of Medical Imaging, University of Arizona, Business, SimonMed Imaging, Scottsdale, Arizona
| | - I Dumić-Čule
- Department of Diagnostic and Interventional Radiology, University Hospital, Zagreb, Croatia
| | | | - Andrea S Klauser
- Department of Radiology, Division of Rheumatology and Sports Imaging, Medical University Innsbruck, Innsbruck, Austria
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25
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Wang AM, Hwu CS, Wu CH. Inhibition of tetrachloroethene and trichloroethene on methanogenesis in anaerobic sludges from various origins. Water Sci Technol 2020; 81:544-549. [PMID: 32385208 DOI: 10.2166/wst.2020.145] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Nine anaerobic sludges were screened to obtain the most effective methanogenic inoculum for the anaerobic treatment of groundwater that is contaminated with tetrachloroethene (PCE) or trichloroethene (TCE). The selection was based on the toxicity of PCE or TCE to acetoclastic methanogens in different sludges. The effects of two biological factors, sludge origin and specific acetoclastic methanogenic activity, and a physical factor, specific surface area of sludge, on the degree of inhibition were examined and compared. The fifty percent inhibition concentrations (IC50) of PCE and TCE that were obtained from 30 °C batch inhibition tests ranged from 0.18 to 0.41 and 1.71 to 3.31 mM, respectively, for the examined sludges. The toxicity of the contaminants to anaerobic sludges did not depend on the two biological factors but was closely correlated with the specific surface area of sludge. Suspended sludges, which have higher specific surface areas than granular sludges, suffered much greater inhibition. This paper suggests the use of anaerobic granular sludges as inocula in bioreactors for treating PCE- and TCE-contaminated groundwater to reduce the effect of their inhibition.
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Affiliation(s)
- A M Wang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan E-mail:
| | - C S Hwu
- Hui-Min Environmental Tech. Corp., 1F, No. 5, Alley 2, Lane 69, Sec. 5, Min Sheng East Rd., Taipei City 10572, Taiwan
| | - C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan E-mail:
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Wu CH, Kuo CY, Dong CD, Chen CW, Lin YL. Removal of sulfonamides from wastewater in the UV/TiO 2 system: effects of pH and salinity on photodegradation and mineralization. Water Sci Technol 2019; 79:349-355. [PMID: 30865606 DOI: 10.2166/wst.2019.053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
The effects of salinity on the photodegradation and mineralization of sulfonamides in the UV/TiO2 system were investigated. The goals of this study were to analyze the effects of pH and salinity on the sulfonamide concentration and total organic carbon (TOC) during the removal of sulfonamides in a UV/TiO2 system. Four sulfonamides - sulfadiazine (SDZ), sulfamethizole (SFZ), sulfamethoxazole (SMX) and sulfathiazole (STZ) - were selected as parent compounds. The photodegradation and mineralization rates of sulfonamides in the UV/TiO2 system satisfy pseudo-first-order kinetics. Direct photolysis degraded sulfonamides but sulfonamides cannot be mineralized. The photodegradation and mineralization rate constants in all experiments followed the order pH 5 > pH 7 > pH 9. At pH 5, the mineralization rate constants of SMX, SFZ, SDZ and STZ were 0.015, 0.009, 0.012 and 0.011 min-1, respectively. The addition of NaCl inhibited the mineralization of the four tested sulfonamides more than it inhibited their photodegradation. The inhibitory effect of chloride ions on the removal of sulfonamides in the UV/TiO2 system was attributed to the scavenging by chloride ions of hydroxyl radicals (HO•) and holes and the much lower reactivity of chlorine radicals thus formed, even though the chlorine radicals were more abundant than HO•.
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Affiliation(s)
- C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan E-mail:
| | - C Y Kuo
- Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology, Yunlin, Taiwan
| | - C D Dong
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan E-mail:
| | - C W Chen
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan E-mail:
| | - Y L Lin
- Department of Chemical and Materials Engineering, National Kaohsiung University of Science and Technology, Kaohsiung, Taiwan E-mail:
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Wu CH, Wu PW, Chen JH, Kao JY, Hsu CY. Effect of Selenization Processes on CIGS Solar Cell Performance. J Nanosci Nanotechnol 2018; 18:5074-5081. [PMID: 29442696 DOI: 10.1166/jnn.2018.15279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Cu(In, Ga)Se2 (CIGS) films were fabricated by a two-step process method using sputtering from Cu0.7Ga0.3 and In targets. The metallic precursor structures of In/CuGa/In were prepared, and CuGa film was adjusted to the thicknesses of 150, 200, 250 and 300 nm, in order to optimize the CIGS film. After selenization, three independent CIGS (112), CIGS (220/204) and CIGS (312/116) began to crystallize at ~280 °C and phase peaks continued growing until 560 °C. Experimental results showed that with a single stage selenization method, the excessive stoichiometry of the CIGS films was obtained. Using three sequential stages for the selenization process, with a annealing time of 20 min, the stoichiometry of the CIGS absorbers with the Cu/(In + Ga) and Ga/(In + Ga) showed atomic ratios of 0.94 and 0.34, respectively. The intensity of the (112) XRD diffraction peak became stronger, indicating an improvement in the crystallinity. Raman spectra of CIGS absorbers showed a main peak (174 cm-1) and two weak signals (212 and 231 cm-1). TEM image for electron diffraction pattern showed that the grains were randomly oriented. CIGS solar cell device prepared with a proper selenization, a maximum efficiency of 12.45% was obtained.
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Affiliation(s)
- C H Wu
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - P W Wu
- Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan
| | - J H Chen
- Department of Industrial Education, National Taiwan Normal University, Taipei 106, Taiwan
| | - J Y Kao
- Department of Mechanical Engineering, Lunghwa University of Science and Technology, Taoyuan 33306, Taiwan
| | - C Y Hsu
- Department of Mechanical Engineering, Lunghwa University of Science and Technology, Taoyuan 33306, Taiwan
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Chuang YC, Tiruneh F, Wu CH. A spatial regression analysis of intimate partner violence in the Democratic Republic of the Congo. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx186.353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- YC Chuang
- Taipei Medical Univ., Dept. of Public Health, Taipei, Taiwan
| | - F Tiruneh
- Taipei Medical Univ., Dept. of Public Health, Taipei, Taiwan
| | - CH Wu
- Taipei Medical Univ., Dept. of Public Health, Taipei, Taiwan
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Cai J, Wu CH, Zhang Y, Wang YY, Xu WD, Lin TC, Li SX, Wang LH, Zheng J, Sun Y, Liu W, Tao T. High-free androgen index is associated with increased risk of non-alcoholic fatty liver disease in women with polycystic ovary syndrome, independent of obesity and insulin resistance. Int J Obes (Lond) 2017; 41:1341-1347. [PMID: 28487551 DOI: 10.1038/ijo.2017.116] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Revised: 04/07/2017] [Accepted: 04/23/2017] [Indexed: 12/22/2022]
Abstract
BACKGROUND/OBJECTIVE Central obesity and insulin resistance (IR) are common conditions in women with polycystic ovary syndrome (PCOS) and in subjects with non-alcoholic fatty liver disease (NAFLD). However, few studies have addressed the association between hyperandrogenism (HA) and NAFLD. We aimed to determine whether variations in the free androgen index (FAI) might be associated with NAFLD prevalence. SUBJECTS/METHODS A cross-sectional study was performed including 400 Chinese women with PCOS and 100 age, and body mass index (BMI)-matched women. The anthropometric and serum biochemical parameters related to sex steroids, glucose and lipid profiles were examined. Liver fat content (LFC) was measured by quantitative ultrasound. RESULTS The prevalence of NAFLD was 56.23% in PCOS patients and 38% in controls (P=0.001), and this prevalence increased with FAI quartile independently of obesity and homeostasis model assessment of insulin resistance (HOMA-IR). The FAI level increased from non-NAFLD group to NAFLD group. The FAI was positively associated with the metabolic parameters LFC, BMI, waist circumference, alanine aminotransferases, aspartate, triglyceride, total cholesterol and low-density lipoprotein cholesterol, and was negatively associated with high-density lipoprotein. Moreover, in multivariate logistic regression analysis BMI, high-sensitivity C-reactive protein (hsCRP), FAI, LFC and HOMA-IR were significantly associated with NAFLD. The cut-off values of FAI, LFC, BMI and hsCRP to predict NAFLD were 9.86%, 17.19%, 24.38% and 0.72%, respectively. The area under the curve for predicting NAFLD in PCOS patients showed comparable sensitivity and specificity between BMI and a new index combining FAI with hsCRP. CONCLUSIONS A higher FAI level is associated with increased LFC and NAFLD prevalence independent of obesity and IR.
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Affiliation(s)
- J Cai
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - C H Wu
- Division of Ultrasonography, Department of Radiology, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Zhang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Y Wang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - W D Xu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - T C Lin
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - S X Li
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - L H Wang
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - J Zheng
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Y Sun
- Shanghai Key laboratory for Assisted Reproduction and Reproductive Genetics, Center for Reproductive Medicine, Shanghai Jiaotong University School of Medicine, Pudong, Shanghai, China
| | - W Liu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - T Tao
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Ren Ji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
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Wu F, Chang XL, Wu CH. [Summary of studies on carcinogenicity of 1-bromopropane]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:555-558. [PMID: 27682502 DOI: 10.3760/cma.j.issn.1001-9391.2016.07.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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Guo JQ, Wu CH, Zhou ZJ. [Advances in detection methods for pyrethroid insecticides and their metabolites in human biological samples of human]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2016; 34:551-555. [PMID: 27682501 DOI: 10.3760/cma.j.issn.1001-9391.2016.07.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
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32
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Zhang WR, Li Y, Zhao J, Wu CH, Ye S, Yuan WJ. Isolation and characterization of microsatellite markers for Eucommia ulmoides (Eucommiaceae), an endangered tree, using next-generation sequencing. Genet Mol Res 2016; 15:gmr7789. [PMID: 27173246 DOI: 10.4238/gmr.15027789] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Eucommia ulmoides Oliver, a single extant species of Eucommiaceae, is an endemic dioecious tree in China. The natural resources of E. ulmoides have rapidly declined in recent years because of the over-collection of its cortex. To design a suitable protection strategy, it is necessary to develop a set of molecular markers to investigate genetic diversity and population structure of E. ulmoides. Pyrosequencing of an enriched microsatellite library by Roche 454 FLX+ platform was used to isolate simple sequence repeats (SSRs) for E. ulmoides. A total of 1568 SSRs that contained enough flanking sequences for primer pair design were identified from 45,236 raw sequence reads. One hundred SSRs were randomly selected to design primer pairs and polymerase chain reaction was performed. Among these 100 tested primer pairs, 16 were polymorphic across 18 individuals from three E. ulmoides populations. The number of alleles ranged from 3 to 8, with an average of 5.1. The expected heterozygosity ranged from 0.110 to 0.830, with an average of 0.648, and the observed heterozygosity ranged from 0.111 to 0.833, with an average of 0.524. The inbreeding coefficient ranged from -0.349 to 0.547. This set of microsatellite markers could be valuable for landscape genetic structure assessment and molecular marker-assisted breeding in E. ulmoides.
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Affiliation(s)
- W R Zhang
- Institute of Chinese Materia Medica, Henan University, Kaifeng, China
| | - Y Li
- College of Forestry, Henan Agricultural University, Zhengzhou, China
| | - J Zhao
- Institute of Chinese Materia Medica, Henan University, Kaifeng, China
| | - C H Wu
- Institute of Chinese Materia Medica, Henan University, Kaifeng, China
| | - S Ye
- Institute of Chinese Materia Medica, Henan University, Kaifeng, China
| | - W J Yuan
- Institute of Chinese Materia Medica, Henan University, Kaifeng, China
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Hu Y, Dong WX, Sun XY, Yuan ZS, Zhang J, Xie H, Wu CH. [A biomechanical evaluation of odontoid screw plate fixation system]. Zhonghua Wai Ke Za Zhi 2016; 54:212-6. [PMID: 26932891 DOI: 10.3760/cma.j.issn.0529-5815.2016.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the biomechanical stability of anterior odontoid screw plate (AOSP). METHODS Eight fresh-frozen cadaveric cervical spine specimens were subjected to stepwise destabilization of the C1-C3 complex, simulating a type Ⅰ Hangman fracture, type Ⅱ odontoid fracture, and the C2-3 disc injury. Intact specimens, fractured specimens, and fractured specimens with posterior, anterior fixation techniques were divided into six groups: control group (intact), injury group of type Ⅱ odontoid fracture and type Ⅰ Hangman fracture combined with C2-3 disk injury, after anterior cervical plate+ odontoid screw+ cage (ACP+ OS+ cage) group, after anterior odontoid screw plate (AOSP) fixation system group, after affixing rods from pedicle screws in C2 to lateral mass screws in C3+ odontoid screw (C2PS+ C3LMS+ OS) group, after affixing rods from pedicle screws in C1 to pedicle screws in C2 and lateral mass screws in C3 (C1PS+ C2PS+ C3LMS) group. The range of motion (ROM) and neutral zone of C1-C2 and C2-C3 segment was tested. RESULTS There was statistically significant difference between the C1PS+ C2PS+ C3LMS fixation group and the AOSP fixation group of ROMC1-C2(P<0.05). During all loading modes, AOSP+ Bone graft fixation significantly outperformed the ACP+ OS+ cage fixation in limiting ROMC2-C3. During flexion and extension, AOSP fixation significantly outperformed the C1PS+ C2PS+ C3LMS fixation and C2PS+ C3LMS+ OS fixation in limiting ROMC2-C3. CONCLUSION The AOSP fixation system has excellent biomechanical performance when dealing with type Ⅰ Hangman fracture, type Ⅱ odontoid fracture, and the C2-3 disc injury, and appear to be a safe and effective technique for dealing with the combined injury.
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Affiliation(s)
- Y Hu
- Department of Spinal Surgery, Ningbo No.6 Hospital, Ningbo 315040, China
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Lin DL, Wang SM, Wu CH, Chen BG, Liu RH. Chemical derivatization for forensic drug analysis by GC- and LC-MS. Forensic Sci Rev 2016; 28:17-35. [PMID: 26841721] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Utilizing chemical derivatization (CD) to improve gas chromatographic (GC) and GC-mass spectrometric (MS) analysis of drugs has been abundantly studied and widely practiced, while in liquid chromatography (LC) and LC-MS, application of CD approaches is still at an early stage. Silylation, acylation, and alkylation are common CD reactions, long adopted by GC and GC-MS (including GC-MS/MS) methodologies, to improve analytes' stability and/or to optimize their extraction/separation and detection efficiencies. Highly polar and nonvolatile analytes are not amenable to GC-MS analysis without the CD step; however, CD can improve LC-MS analysis of highly polar analytes, especially those with low molecular weights. Many CD reagents developed for GC and GC-MS applications are also effective in LC-MS. Other CD reagents are developed for LC-MS to enhance analytes' performance under electrospray and atmospheric pressure ionization sources. Certain CD reagents are designed to facilitate analytes' fragmentation (upon collision-induced dissociation) in generating intense product ions for sensitive MS/MS detection. In this review, various CD reagents, reaction types, and application examples are presented and discussed, with emphases on GC-MS and LC-MS analysis of drugs of abuse.
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Affiliation(s)
- D L Lin
- Department of Forensic Toxicology, Institute of Forensic Medicine, Ministry of Justice, New Taipei City, Taiwan
| | - S M Wang
- Department of Forensic Sciences, Central Police University, Taiyuan City, Taiwan
| | - C H Wu
- Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology, Yunlin County, Taiwan
| | | | - R H Liu
- Department of Justice Sciences, University of Alabama at Birmingham, Birmingham, AL, USA
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Abstract
In this investigation, UV/H2O2, UV/H2O2/Fe(2+) (photo-Fenton) and UV/H2O2/Fe(3+) (photo-Fenton-like) systems were used to mineralize sulfamethizole (SFZ). The optimal doses of H2O2 (1-20 mM) in UV/H2O2 and iron (0.1-1 mM) in photo-Fenton and photo-Fenton-like systems were determined. Direct photolysis by UV irradiation and direct oxidation by added H2O2, Fe(2+) and Fe(3+) did not mineralize SFZ. The optimal dose of H2O2 was 10 mM in UV/H2O2 and that of iron (Fe(2+) or Fe(3+)) was 0.2 mM in both UV/H2O2/Fe(2+) and UV/H2O2/Fe(3+) systems. Under the best experimental conditions and after 60 min of reaction, the SFZ mineralization percentages in UV/H2O2, UV/H2O2/Fe(2+) and UV/H2O2/Fe(3+) systems were 16, 90 and 88%, respectively. The UV/H2O2/Fe(2+) and UV/H2O2/Fe(3+) systems effectively mineralized SFZ.
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Affiliation(s)
- C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - J T Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - Y H Lin
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
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Hsiao HH, Liu YC, Wang HC, Tsai YF, Wu CH, Cho SF, Hsu JF, Huang CT, Hsiao SY, Lee CP, Chang CS, Lin SF, Liu TC. Additional chromosomal abnormalities in core-binding factor acute myeloid leukemia. Genet Mol Res 2015; 14:17028-33. [PMID: 26681050 DOI: 10.4238/2015.december.16.3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Despite sharing a similar genetic abnormality, patients with core binding factor acute myeloid leukemia (CBF-AML), which is characterized by the presence of t(8;21) or inv(16)/t(16;16), show heterogeneous survival. Other molecular or cytogenetic factors are supposed to have an impact on the prognosis. We enrolled 24 CBF-AML patients to determine the impact of cytogenetic abnormality, and c-KIT, FLT3, NPM1, and CEBPA mutations on the prognosis. Only three patients had the c-KIT mutation (3/24, 12.5%) and one had the FLT3 mutation. However, over half of the patients (14/24) harbored additional cytogenetic changes, including ten with loss of sexual chromosomes (LOS) [all in the t(8;21) group], and six had additional abnormalities (two cases had both LOS and additional abnormalities). From this small-number study, no association was found between c-KIT mutation and survival and relapse rate. However, additional chromosome abnormalities had a significant association with relapse of the disease (P = 0.027). Stem cell transplant had a trend of benefitting patients after relapse (P = 0.065). This implies that chromosome abnormalities occur in CBF-AML and might take part in the heterogeneous nature of CBF-AML.
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Affiliation(s)
- H H Hsiao
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Y C Liu
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - H C Wang
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - Y F Tsai
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - C H Wu
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - S F Cho
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - J F Hsu
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - C T Huang
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - S Y Hsiao
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - C P Lee
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan
| | - C S Chang
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan.,Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - S F Lin
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan.,Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - T C Liu
- Division of Hematology-Oncology, Department of Internal Medicine, Kaohsiung, Taiwan.,Department of Laboratory Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.,Faculty of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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Özçakar L, Kara M, Chang KV, Tok F, Hung CY, Akkaya N, Wu CH, Çarli AB, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic scanning protocols for knee. Eur J Phys Rehabil Med 2015; 51:641-646. [PMID: 26351105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned knee structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Akkaya N, Hung CY, Tok F, Wu CH, Çarli AB, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic scanning protocols for hip. Eur J Phys Rehabil Med 2015; 51:635-640. [PMID: 26351107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned hip structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Bayram Çarli A, Hung CY, Tok F, Wu CH, Akkaya N, Hsiao MY, Tekin L, Wang TG, Ulaşlı AM, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM. Basic Scanning Protocols for Ankle and foot. Eur J Phys Rehabil Med 2015; 51:647-653. [PMID: 26351106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned ankle/foot structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Hung CY, Tekın L, Ulaşlı AM, Wu CH, Tok F, Hsıao MY, Akkaya N, Wang TG, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for elbow. Eur J Phys Rehabil Med 2015; 51:485-489. [PMID: 26158916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned elbow structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Ulaşlı AM, Hung CY, Tekin L, Wu CH, Tok F, Hsiao MY, Akkaya N, Wang T, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for wrist and hand. Eur J Phys Rehabil Med 2015; 51:479-484. [PMID: 26158917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned wrist/hand structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Özçakar L, Kara M, Chang KV, Tekin L, Hung CY, Ulaülı AM, Wu CH, Tok F, Hsiao MY, Akkaya N, Wang TG, Çarli AB, Chen WS, De Muynck M. EURO-MUSCULUS/USPRM Basic Scanning Protocols for shoulder. Eur J Phys Rehabil Med 2015; 51:491-496. [PMID: 26158915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
In this protocol, the patient/probe positionings, anatomical drawings and ultrasound images of commonly scanned shoulder structures are described. This practical guide is prepared (with an international consensus of several expert physiatrists) to serve as a uniform/standard approach especially for beginner sonographers.
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Affiliation(s)
- L Özçakar
- Department of Physical and Rehabilitation Medicine, Hacettepe University Medical School, Ankara, Turkey -
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Wu CH, Ku WS, Jhan FJ, Chen JH, Jeng JT. A Nanoscale-Localized Ion Damage Josephson Junction Using Focused Ion Beam and Ion Implanter. J Nanosci Nanotechnol 2015; 15:3728-3732. [PMID: 26504998 DOI: 10.1166/jnn.2015.9757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
High-T(c) Josephson junctions were fabricated by nanolithography using focused ion beam (FIB) milling and ion implantation. The junctions were formed in a YBa2Cu3O7-x, thin film in regions defined using a gold-film mask with 50-nm-wide (top) slits, engraved by FIB. The focused ion beam system parameters for dwell time and passes were set to remove gold up to a precise depth. 150 keV oxygen ions were implanted at a nominal dose of up to 5 x 10(13) ions/cm2 into YBa2Cu3O7-x microbridges through the nanoscale slits. The current-voltage curves of the ion implantation junctions exhibit resistive-shunted-junction-like behavior at 77 K. The junction had an approximately linear temperature dependence of critical current. Shapiro steps were observed under microwave irradiation. A 50-nm-wide slit and 0-20-nm-thick buffer layers were chosen in order to make Josephson junctions due to the V-shape of the FIB-milled trench.
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Wu JT, Wu CH, Liu CY, Huang WJ. Photodegradation of sulfonamide antimicrobial compounds (sulfadiazine, sulfamethizole, sulfamethoxazole and sulfathiazole) in various UV/oxidant systems. Water Sci Technol 2015; 71:412-417. [PMID: 25714641 DOI: 10.2166/wst.2015.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study used Na₂S₂O₈, NaBrO8 and H₂O₂to degrade sulfadiazine (SDZ), sulfamethizole (SFZ), sulfamethoxazole (SMX) and sulfathiazole (STZ) under ultraviolet (UV) irradiation. The initial concentration of sulfonamide and oxidant in all experiments was 20 mg/L and 5 mM, respectively. The degradation rate for sulfonamides satisfies pseudo-first-order kinetics in all UV/oxidant systems. The highest degradation rate for SDZ, SFZ, SMX and STZ was in the UV/Na₂S₂O₈, UV/NaBrO₃, UV/Na₂S₂O₈ and UV/H₂O₂ system, respectively. In the UV/Na₂S₂O₈ system, the photodegradation rate of SDZ, SFZ, SMX and STZ was 0.0245 min⁻¹, 0.0096 min⁻¹, 0.0283 min⁻¹ and 0.0141 min⁻¹, respectively; moreover, for the total organic carbon removal rate for SDZ, SFZ, SMX and STZ it was 0.0057 min⁻¹, 0.0081 min⁻¹, 0.0130 min⁻¹ and 0.0106 min⁻¹, respectively. Experimental results indicate that the ability of oxidants to degrade sulfonamide varied with pollutant type. Moreover, UV/Na₂S₂O₈ had the highest mineralization rate for all tested sulfonamides.
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Affiliation(s)
- J T Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - C Y Liu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - W J Huang
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
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Liao SH, Chen KL, Wang CM, Chieh JJ, Horng HE, Wang LM, Wu CH, Yang HC. Using bio-functionalized magnetic nanoparticles and dynamic nuclear magnetic resonance to characterize the time-dependent spin-spin relaxation time for sensitive bio-detection. Sensors (Basel) 2014; 14:21409-17. [PMID: 25397920 PMCID: PMC4279540 DOI: 10.3390/s141121409] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 10/24/2014] [Accepted: 10/29/2014] [Indexed: 11/16/2022]
Abstract
In this work, we report the use of bio-functionalized magnetic nanoparticles (BMNs) and dynamic magnetic resonance (DMR) to characterize the time-dependent spin-spin relaxation time for sensitive bio-detection. The biomarkers are the human C-reactive protein (CRP) while the BMNs are the anti-CRP bound onto dextran-coated Fe3O4 particles labeled as Fe3O4-antiCRP. It was found the time-dependent spin-spin relaxation time, T2, of protons decreases as time evolves. Additionally, the ΔT2 of of protons in BMNs increases as the concentration of CRP increases. We attribute these to the formation of the magnetic clusters that deteriorate the field homogeneity of nearby protons. A sensitivity better than 0.1 μg/mL for assaying CRP is achieved, which is much higher than that required by the clinical criteria (0.5 mg/dL). The present MR-detection platform shows promise for further use in detecting tumors, viruses, and proteins.
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Affiliation(s)
- Shu-Hsien Liao
- Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 116, Taiwan.
| | - Kuen-Lin Chen
- Department of Electro-Optical Engineering, Kun Shan University, Tainan 710, Taiwan.
| | - Chun-Min Wang
- Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 116, Taiwan.
| | - Jen-Jie Chieh
- Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 116, Taiwan.
| | - Herng-Er Horng
- Institute of Electro-Optical Science and Technology, National Taiwan Normal University, Taipei 116, Taiwan.
| | - Li-Min Wang
- Graduate Institute of Applied Physics and Department of Physics, National Taiwan University, Taipei 106, Taiwan.
| | - C H Wu
- Department of Physics, National Chung Hsing University, Taichung 402, Taiwan.
| | - Hong-Chang Yang
- Department of Electro-Optical Engineering, Kun Shan University, Tainan 710, Taiwan.
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Wu C, Cao Y, He Z, He J, Hu C, Duan H, Jiang J. Serum levels of miR-19b and miR-146a as prognostic biomarkers for non-small cell lung cancer. TOHOKU J EXP MED 2014; 232:85-95. [PMID: 24531034 DOI: 10.1620/tjem.232.85] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
MicroRNA (miRNA) is a type of small non-coding RNA molecule that has important roles in cancer initiation, promotion and progression by negatively regulating gene expression. In this study, we explored the role of miRNAs in the prognosis of patients with non-small cell lung cancer (NSCLC). The miRNA expression profiles were determined in 5 pairs of NSCLC and paracancerous tissues (3 adenocarcinomas and 2 squamous cell carcinomas). Aberrantly expressed miRNAs were validated by quantitative real-time PCR (qRT-PCR) in 61 pairs of NSCLC and paracancerous tissues. Differentially expressed miRNAs were further analyzed in sera from 94 healthy subjects and 94 advanced NSCLC patients receiving platinum-based chemotherapy. Three miRNAs (miR-19b, miR-146a, and miR-223) were significantly dysregulated in NSCLC tissues (P < 0.05). High miR-19b and low miR-146a expression in NSCLC tissues were associated with higher TNM stage, lymph node metastasis and poorer survival (P < 0.05). The serum levels of miR-19b in NSCLC patients were significantly higher (P < 0.001), whereas serum levels of miR-146a were significantly lower (P < 0.001), compared with those in controls. Serum levels of miR-19b and miR-146a were associated with overall survival of NSCLC patients (P < 0.05). Patients with low serum level of miR-19b and high serum level of miR-146a achieved a higher overall response rate and longer survival time (P < 0.05). These data suggest that miR-19b and miR-146a are potential biomarkers for the prediction of survival and response to chemotherapy in NSCLC.
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Affiliation(s)
- Chaohui Wu
- Department of Thoracic Surgery, the First Affiliated Hospital of Xiamen University
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Liao CC, Chang PY, Yeh CC, Hu CJ, Wu CH, Chen TL. Outcomes after surgery in patients with previous stroke. Br J Surg 2014; 101:1616-22. [PMID: 25224956 DOI: 10.1002/bjs.9639] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 06/27/2014] [Accepted: 07/30/2014] [Indexed: 01/09/2023]
Abstract
BACKGROUND Limited information is available on the association between a medical history of stroke and postoperative outcomes. This study investigated the outcomes following non-neurological surgery in patients with previous stroke. METHODS Using Taiwan's National Health Insurance Research Database, a nationwide cohort study was conducted of patients who underwent non-neurological surgery between 2008 and 2010 with a medical history of stroke in the 24-month period before operation. Patients who had non-neurological surgeries without previous stroke were selected as controls by the propensity score-matched pair method. Thirty-day postoperative complications and in-hospital mortality were compared between the two groups. RESULTS Some 1 426 795 adults underwent major inpatient non-neurological surgery, of whom 45 420 had a medical history of previous stroke. Patients with previous stroke who underwent surgery had an increased risk of postoperative pneumonia, septicaemia, acute renal failure, acute myocardial infarction, pulmonary embolism and 30-day in-hospital mortality (adjusted rate ratio (RR) 1·79, 95 per cent c.i. 1·61 to 1·99). Compared with controls, patients with previous stroke due to intracerebral haemorrhage (RR 3·41, 2·97 to 3·91), and those who were treated in intensive care (RR 2·55, 2·24 to 2·90) or underwent neurosurgery (RR 2·49, 2·12 to 2·92), had an increased 30-day in-hospital mortality rate. Postoperative mortality also increased with stroke-related co-morbidities, and with stroke 1-6 months before surgery (RR 3·31, 2·91 to 3·75). CONCLUSION Patients with previous stroke had a higher risk of adverse postoperative outcomes; their 30-day in-hospital mortality rate was nearly twice that of patients without previous stroke.
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Affiliation(s)
- C C Liao
- Department of Anaesthesiology, Health Policy Research Centre, Taipei Medical University Hospital, Taipei, Taiwan; Health Policy Research Centre, Taipei Medical University Hospital, Taipei, Taiwan; School of Medicine, Taipei Medical University, Taipei, Taiwan; Department of School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan
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48
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Wu C, Li M, Hu C, Duan H. Clinical significance of serum miR-223, miR-25 and miR-375 in patients with esophageal squamous cell carcinoma. Mol Biol Rep 2014; 41:1257-66. [PMID: 24390317 DOI: 10.1007/s11033-013-2970-z] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2013] [Accepted: 12/23/2013] [Indexed: 02/06/2023]
Abstract
Changes in the expression profiles of microRNAs (miRNAs) have been found in many cancers. The study was aimed to investigate the expression of miR-25, miR-223, and miR-375 in the serum of patients with esophageal squamous cell carcinoma (ESCC) and its effect on survival outcome. We examined the expression levels of miR-25, miR-223, and miR-375 in 20 pairs of ESCC cancer and matched paracancerous tissues, serum samples from 94 healthy volunteers and 194 patients with ESCC using quantitative reverse transcription polymerase chain reaction, and analyzed the relationship between expressions of serum miR-25, miR-223, and miR-375 and ESCC clinicopathological parameters as well as survival. Expressions of miR-25 and miR-223 were significantly increased in ESCC tissues compared with paracancerous tissues (P = 0.008 and 0.009, respectively), whereas the expression of miR-375 was significantly decreased in ESCC tissues compared with paracancerous tissues (P = 0.006). Expressions of serum miR-25 and miR-223 were significantly higher in ESCC patients than those in healthy controls, and, inversely, expression of serum miR-375 was significantly lower in ESCC patients than those in healthy controls (P = 0.007). High expression of serum miR-25 was significantly associated with lymph node metastasis (P = 0.01). Survival analysis showed that high expression of serum miR-223 and low expression of serum miR-375 were associated with poor survival in ESCC patients [hazard ratio (HR) = 1.717, 95% confidence intervals (CI) 1.139-2.588, P = 0.01; HR = 1.750, 95% CI 1.111-2.756, P = 0.016, respectively). Furthermore, Patients with high miR-223 and low miR-375 expression had higher risk of death than those with low miR-223 and high miR-375 expression (HR = 3.599, 95% CI 1.800-7.195, P = 2.92 × 10(-4)). In conclusion, miR-25, miR-223, and miR-375 were abnormally expressed in ESCC tissues and sera. Serum miR-223 and miR-375 are potential prognostic biomarkers for ESCC.
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Affiliation(s)
- Chaohui Wu
- Department of Thoracic Surgery, Zhongshan Hospital, Xiamen University, Fujian, 361004, China
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Abstract
Pharmaceutical wastewater generated by an antibiotics (penicillin) company was treated by aerobic membrane bioreactors (MBRs) and sequencing batch reactors (SBRs). At a low organic loading rate of 0.22 kg-COD m(-3)d(-1), both types of reactors were capable of treating the wastewater such that the treated effluent met the discharge regulation except for the total dissolved solids. However, when the loading rate was increased to 2.92 kg-COD m(-3)d(-1), foaming issues resulted in unstable performance. Overall, the MBRs achieved better solid removal but the SBRs performed better in regards to the degradation of aromatic compounds, as determined by UV absorbance (UVA). Finally, ozonation was applied on two different streams and showed promise on the strong stream - that corresponds to the formulation effluent and contains most of the biorefractory compounds. Ozonation successfully reduced the UVA, lowered the pH and increased the biochemical oxygen demand : chemical oxygen demand (BOD5 : COD) ratio of the strong stream. However, it was less efficient on the effluent having undergone pre-treatment by a biofilter due to a lack of selectivity towards refractory compounds.
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Affiliation(s)
- O Lefebvre
- Department of Civil and Environmental Engineering, Centre for Water Research, National University of Singapore, 1 Engineering Dr. 2, Singapore 117576, Singapore E-mail:
| | - X Shi
- Department of Civil and Environmental Engineering, Centre for Water Research, National University of Singapore, 1 Engineering Dr. 2, Singapore 117576, Singapore E-mail:
| | - C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan, R.O.C
| | - H Y Ng
- Department of Civil and Environmental Engineering, Centre for Water Research, National University of Singapore, 1 Engineering Dr. 2, Singapore 117576, Singapore E-mail:
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Kuo CY, Wu CH, Wu JT, Chen YC. Preparation of immobilized Cu2O using microwave irradiation and its catalytic activity for bisphenol A: comparisons of Cu2O/H2O2 and visible-light/Cu2O/H2O2 systems. Water Sci Technol 2014; 70:1428-1433. [PMID: 25353950 DOI: 10.2166/wst.2014.373] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
This study produced immobilized Cu2O via microwave irradiation. The surface properties of Cu2O were assessed by X-ray diffraction, scanning electron microscopy, and UV-vis spectroscopy. The catalytic activity of the generated Cu2O was examined for bisphenol (BPA) degradation in Cu2O/H2O2 and visible-light/Cu2O/H2O2 systems under various H2O2 concentrations. Cu2O can decompose H2O2 to generate radicals, similar to the Fenton-like process. The BPA degradation rate followed pseudo-first-order kinetics. The optimal H2O2 concentration was 30 mM and the BPA degradation rate under 30 mM H2O2 in the Cu2O/H2O2 and visible-light/Cu2O/H2O2 systems was 1.43 and 2.69 h(-1), respectively. The original Cu2O partly oxidized into CuO in the visible-light/Cu2O/H2O2 system and the BPA degradation percentage declined to 51% from 100% after the fifth cycle.
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Affiliation(s)
- C Y Kuo
- Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology, Taiwan
| | - C H Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - J T Wu
- Department of Chemical and Materials Engineering, National Kaohsiung University of Applied Sciences, 415 Chien Kung Road, Kaohsiung 807, Taiwan E-mail:
| | - Y C Chen
- Department of Environmental and Safety Engineering, National Yunlin University of Science and Technology, Taiwan
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