1
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Yu LY, Shueng PW, Chiu HC, Yen YW, Kuo TY, Li CR, Liu MW, Ho CH, Ho TH, Wang BW, Li CE, Chen MH, Shen YA, Lo CL. Glucose Transporter 1-Mediated Transcytosis of Glucosamine-Labeled Liposomal Ceramide Targets Hypoxia Niches and Cancer Stem Cells to Enhance Therapeutic Efficacy. ACS Nano 2023. [PMID: 37436002 DOI: 10.1021/acsnano.2c12123] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 07/13/2023]
Abstract
Tumour hypoxia plays an important role in modulating tumorigenesis, angiogenesis, invasion, immunosuppression, resistance to treatment, and even maintenance of the stemness of cancer stem cells (CSCs). Moreover, the targeting and treatment of hypoxic cancer cells and CSCs to reduce the influence of tumor hypoxia on cancer therapy remains an imperative clinical problem that needs to be addressed. Since cancer cells upregulate the expression of glucose transporter 1 (GLUT1) through the Warburg effect, we considered the possibility of GLUT1-mediated transcytosis in cancer cells and developed a tumor hypoxia-targeting nanomedicine. Our experimental results indicate that glucosamine-labeled liposomal ceramide can be efficiently transported between cancer cells by GLUT1 transporters and substantially accumulated in the hypoxic area in in vitro CSC spheroids and in vivo tumor xenografts. We also verified the effects of exogenous ceramide on tumor hypoxia, including important bioactivities such as upregulation of p53 and retinoblastoma protein (RB), downregulation of hypoxia-inducible factor-1 alpha (HIF-1α) expression, disruption of the OCT4-SOX2 network of stemness, and inhibition of CD47 and PD-L1 expression. To achieve an ideal therapeutic outcome, we combined treatment of glucosamine-labeled liposomal ceramide with paclitaxel and carboplatin, and we found an excellent synergistic effect, with tumor clearance being noted in three-fourths of the mice. Overall, our findings provide a potential therapeutic strategy for the treatment of cancer.
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Affiliation(s)
- Lu-Yi Yu
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Pei-Wei Shueng
- Division of Radiation Oncology, Far Eastern Memorial Hospital, New Taipei City 220, Taiwan, ROC
- Faculty of Medicine, School of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Hsin-Cheng Chiu
- Department of Biomedical Engineering and Environmental Sciences, National Tsing-Hua University, Hsinchu 300, Taiwan, ROC
| | - Yu-Wei Yen
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Tzu-Yu Kuo
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Chieh-Ru Li
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Ming-Wei Liu
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Chia-Hsin Ho
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Tzu-Hao Ho
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Bo-Wei Wang
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Cheng-En Li
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Ming-Hung Chen
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
| | - Yao-An Shen
- Department of Pathology, School of Medicine, College of Medicine, Taipei Medical University, Taipei 110, Taiwan, ROC
| | - Chun-Liang Lo
- Department of Biomedical Engineering, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
- Medical Device Innovation and Translation Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan, ROC
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2
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Huang XF, Xue JJ, Liu ZL, Chen Y, Luo Y, Wu JB, Wang BW, Wang QG, Wang C. Effects of drinking water temperature in winter on growth performance, water consumption, surface temperature, and intestinal development of geese from 21 to 49 days of age. Poult Sci 2023; 102:102725. [PMID: 37156075 DOI: 10.1016/j.psj.2023.102725] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 04/07/2023] [Accepted: 04/11/2023] [Indexed: 05/10/2023] Open
Abstract
This research aimed to investigate the effects of drinking water temperatures on growth performance, water consumption, surface temperature, organ indices, blood parameters, and intestinal development of geese, and determine the optimal drinking water temperature for 21 to 49-d geese. A total of 192 twenty-one-day male Yuzhou white geese were allocated randomly to 4 groups with 8 replicate pens per group according to the drinking water temperature (drinking water temperature [7℃-12℃] at ambient temperature [TC], 18℃ [T1], 27℃ [T2], and 36℃ [T3], respectively). The results showed that increasing drinking water temperature did not significantly improve the BW, ADG, and ADFI of geese (P > 0.05), whereas drinking warm water of 36℃ for geese had a trend to increase FCR (0.05 < P < 0.1). Geese in group T2 drank the most water per day on average, whereas geese in group TC drank the least (P < 0.001). Geese in groups T1, T2, and T3 had higher eyes temperatures than group TC (P < 0.001). No significant differences were found on the organ indices and blood biochemical parameters (P > 0.05). Geese from group T1 had higher crypt depth and muscularis thickness of duodenum (P < 0.05), and lower ratio of villus height to crypt depth than other groups (P < 0.001). Geese from group T1 had higher activities of trypsin in duodenum and jejuna and amylase in jejuna at 49 d than other groups (P < 0.01). Overall, these data indicate drinking water at 18℃ can increase water consumption and eyes temperature, and improve the activity of digestive enzymes and promote intestinal development. Under our experimental conditions, we recommend that the optimal drinking water temperature for geese from 21 to 49 d of age is 18°C.
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Affiliation(s)
- X F Huang
- Poultry Science Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China
| | - J J Xue
- Poultry Science Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China
| | - Z L Liu
- Poultry Science Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China
| | - Y Chen
- Poultry Science Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China
| | - Y Luo
- Poultry Science Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China
| | - J B Wu
- Agricultural Service Center of Baitao Street, Fuling District, Chongqing 408000, China
| | - B W Wang
- Department of Food Science and Engineering, Qingdao Agricultural University, Qingdao 266109, China
| | - Q G Wang
- Poultry Science Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China; Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest, Ministry of Agriculture, Chongqing 402460, China
| | - C Wang
- Poultry Science Institute, Chongqing Academy of Animal Sciences, Chongqing 402460, China; Scientific Observation and Experiment Station of Livestock Equipment Engineering in Southwest, Ministry of Agriculture, Chongqing 402460, China.
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3
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Lin CC, Hoo SY, Ma LT, Lin C, Huang KF, Ho YN, Sun CH, Lee HJ, Chen PY, Shu LJ, Wang BW, Hsu WC, Ko TP, Yang YL. Integrated omics approach to unveil antifungal bacterial polyynes as acetyl-CoA acetyltransferase inhibitors. Commun Biol 2022; 5:454. [PMID: 35551233 PMCID: PMC9098870 DOI: 10.1038/s42003-022-03409-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [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: 11/24/2021] [Accepted: 04/23/2022] [Indexed: 11/17/2022] Open
Abstract
Bacterial polyynes are highly active natural products with a broad spectrum of antimicrobial activities. However, their detailed mechanism of action remains unclear. By integrating comparative genomics, transcriptomics, functional genetics, and metabolomics analysis, we identified a unique polyyne resistance gene, masL (encoding acetyl-CoA acetyltransferase), in the biosynthesis gene cluster of antifungal polyynes (massilin A 1, massilin B 2, collimonin C 3, and collimonin D 4) of Massilia sp. YMA4. Crystallographic analysis indicated that bacterial polyynes serve as covalent inhibitors of acetyl-CoA acetyltransferase. Moreover, we confirmed that the bacterial polyynes disrupted cell membrane integrity and inhibited the cell viability of Candida albicans by targeting ERG10, the homolog of MasL. Thus, this study demonstrated that acetyl-CoA acetyltransferase is a potential target for developing antifungal agents. In a multi-omics analysis, bacterial polyynes are found to act as antifungal agents by inhibiting the Candida albicans polyyne resistance gene ERG10, the homolog of MasL encoding acetyl-CoA acetyltransferase.
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Affiliation(s)
- Ching-Chih Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan.,Biotechnology Center in Southern Taiwan, Academia Sinica, Guiren Dist., Tainan, 711, Taiwan
| | - Sin Yong Hoo
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan.,Biotechnology Center in Southern Taiwan, Academia Sinica, Guiren Dist., Tainan, 711, Taiwan
| | - Li-Ting Ma
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan.,Biotechnology Center in Southern Taiwan, Academia Sinica, Guiren Dist., Tainan, 711, Taiwan
| | - Chih Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan
| | - Kai-Fa Huang
- Institute of Biological Chemistry, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan
| | - Ying-Ning Ho
- Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, Jhongjheng Dist., Keelung, 202, Taiwan
| | - Chi-Hui Sun
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan
| | - Han-Jung Lee
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan
| | - Pi-Yu Chen
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan
| | - Lin-Jie Shu
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan
| | - Bo-Wei Wang
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan.,Biotechnology Center in Southern Taiwan, Academia Sinica, Guiren Dist., Tainan, 711, Taiwan.,Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Gushan Dist., Kaohsiung, 804, Taiwan
| | - Wei-Chen Hsu
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan.,Biotechnology Center in Southern Taiwan, Academia Sinica, Guiren Dist., Tainan, 711, Taiwan
| | - Tzu-Ping Ko
- Institute of Biological Chemistry, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Nankang Dist., Taipei, 115, Taiwan. .,Biotechnology Center in Southern Taiwan, Academia Sinica, Guiren Dist., Tainan, 711, Taiwan.
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4
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Yu JL, Wang BW, Zhang HL, Yang LQ, Yao JJ, Huang HD, Tao L, Gao Y, Liu ZH. Therapeutic Potential of Berberine for Osteoporosis and its Underlying Mechanisms: A Bioinformatics, Network Pharmacology, Molecular Dynamics Simulation Study. Nat Prod Commun 2022. [DOI: 10.1177/1934578x221094913] [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: 11/15/2022] Open
Abstract
Osteoporosis is a systemic skeletal disease that can easily lead to bone fractures. Berberine has been shown to be effective in treating osteoporosis. This study was conducted to identify the potential mechanism of berberine in treating this complaint. We screened potential targets of berberine and identified the osteoporosis-related differentially expressed genes (DEGs) in the microarray dataset GSE56815. Protein–protein interaction (PPI) network construction, hub targets identification, and pathway enrichment were carried out to find the potential targets. Molecular docking and molecular dynamics studies were performed to verify the combination of berberine with its treatment-related central targets. In addition, SwissADME preliminarily evaluated the physicochemical properties of berberine. Through data mining, 23 osteoporosis-related targets of berberine were selected. PPI and module analyses suggested that AKT1, MAPK1, ESR1, AR, TP53, and PTGS2 are the core targets of berberine. Docking and molecular dynamics studies showed that berberine could stably bind to core proteins to form a protein–ligand complex. The enrichment analysis showed that the estrogen signaling pathway and thyroid hormone signaling pathway play important roles in curing osteoporosis. To sum up, berberine primarily acts on AKT1, MAPK1, ESR1, AR, TP53, and PTGS2, mainly regulating the estrogen and thyroid hormone signaling pathways to treat osteoporosis in a multi-target, multi-pathway, and multi-system manner.
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Affiliation(s)
- Jin-Ling Yu
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Bo-Wei Wang
- Department of Gynaecology and Obstetrics, The Second Hospital of Jilin University, Changchun, China
| | - Hui-Li Zhang
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Liu-Qing Yang
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Jing-Jing Yao
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Han-Dan Huang
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Lu Tao
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Ying Gao
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
| | - Zhi-Hui Liu
- Department of Prosthodontics, Hospital of Stomatology, Jilin University, Changchun, China
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5
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Su CH, Wang BW, Dutkiewicz EP, Hsu CC, Yang YL. Surface-Assisted Laser Desorption/Ionization Imaging Mass Spectrometry (SALDI-IMS)-Based Detection of Vinca Alkaloids Distribution in the Petal of Madagascar Periwinkle. Methods Mol Biol 2022; 2505:45-58. [PMID: 35732935 DOI: 10.1007/978-1-0716-2349-7_3] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The surface-assisted laser desorption/ionization (SALDI) technique uses inorganic materials to aid desorption and ionization of molecules. SALDI is suitable for analyzing small molecules due to the absence of interfering signals in the low m/z range originating from the organic matrix. Imaging mass spectrometry (IMS) is a versatile imaging approach with high spatial resolution for analyzing various molecular species, but its application depends heavily on the ionization method. We have developed a functionalized titanium dioxide (TiO2) nanowire as a solid substrate for SALDI-MS detection of low-molecular-weight molecules. We apply this novel substrate for imprinting fragile specimens such as petals and further SALDI-IMS analysis. The TiO2 nanowire substrate is prepared from a commercial Ti plate by a hydrothermal process and subsequently chemically modified to improve the quality and selectivity of imprinting as well as the sensitivity of SALDI-IMS analysis. Here, the functionalized TiO2 nanowire substrate is applied to visualize the distribution of vinca alkaloids in the petal of Madagascar periwinkle (Catharanthus roseus).
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Affiliation(s)
- Chun-Han Su
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Bo-Wei Wang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
| | - Ewelina P Dutkiewicz
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan
- Department of Chemistry, National Taiwan University, Taipei, Taiwan
| | - Cheng-Chih Hsu
- Department of Chemistry, National Taiwan University, Taipei, Taiwan.
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan.
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6
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Wang BW, Huang CH, Liu LC, Cheng FJ, Wei YL, Lin YM, Wang YF, Wei CT, Chen Y, Chen YJ, Huang WC. Pim1 Kinase Inhibitors Exert Anti-Cancer Activity Against HER2-Positive Breast Cancer Cells Through Downregulation of HER2. Front Pharmacol 2021; 12:614673. [PMID: 34267653 PMCID: PMC8276059 DOI: 10.3389/fphar.2021.614673] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [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: 10/06/2020] [Accepted: 06/17/2021] [Indexed: 11/25/2022] Open
Abstract
The proviral integration site for moloney murine leukemia virus 1 (Pim1) is a serine/threonine kinase and able to promote cell proliferation, survival and drug resistance. Overexpression of Pim1 has been observed in many cancer types and is associated with the poor prognosis of breast cancer. However, it remains unclear whether Pim1 kinase is a potential therapeutic target for breast cancer patients. In this study, we found that Pim1 expression was strongly associated with HER2 expression and that HER2-overexpressing breast cancer cells were more sensitive to Pim1 inhibitor-induced inhibitions of cell viability and metastatic ability. Mechanistically, Pim1 inhibitor suppressed the expression of HER2 at least in part through transcriptional level. More importantly, Pim1 inhibitor overcame the resistance of breast cancer cells to HER2 tyrosine kinase inhibitor lapatinib. In summary, downregulation of HER2 by targeting Pim1 may be a promising and effective therapeutic approach not only for anti-cancer growth but also for circumventing lapatinib resistance in HER2-positive breast cancer patients.
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Affiliation(s)
- Bo-Wei Wang
- Graduate Institute of Biomedical Sciences, Center for Molecular Medicine and Research Center for Cancer Biology, China Medical University, Taichung, Taiwan
| | - Chih-Hao Huang
- Division of Breast Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Liang-Chih Liu
- Division of Breast Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Fang-Ju Cheng
- Graduate Institute of Biomedical Sciences, Center for Molecular Medicine and Research Center for Cancer Biology, China Medical University, Taichung, Taiwan
| | - Ya-Ling Wei
- Graduate Institute of Biomedical Sciences, Center for Molecular Medicine and Research Center for Cancer Biology, China Medical University, Taichung, Taiwan
| | - Yueh-Ming Lin
- Division of Colorectal Surgery, Department of Surgery, Kaohsiung Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Kaohsiung, Taiwan
| | - Yu-Fei Wang
- Graduate Institute of Biomedical Sciences, Center for Molecular Medicine and Research Center for Cancer Biology, China Medical University, Taichung, Taiwan
| | - Ching-Ting Wei
- School of Medicine for International Students, I-Shou University, Kaohsiung, Taiwan
| | - Yeh Chen
- Institute of New Drug Development, China Medical University, Taichung, Taiwan
| | - Yun-Ju Chen
- School of Medicine for International Students, I-Shou University, Kaohsiung, Taiwan.,Department of Medical Research, E-Da Hospital, Kaohsiung, Taiwan
| | - Wei-Chien Huang
- Graduate Institute of Biomedical Sciences, Center for Molecular Medicine and Research Center for Cancer Biology, China Medical University, Taichung, Taiwan.,Drug Development Center, China Medical University, Taichung, Taiwan.,Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan.,The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
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7
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Khan MAR, Wang BW, Chen YY, Lin TH, Lin HC, Yang YL, Pang KL, Liaw CC. Natural polyketide 6-pentyl-2 H-pyrone-2-one and its synthetic analogues efficiently prevent marine biofouling. Biofouling 2021; 37:257-266. [PMID: 33870823 DOI: 10.1080/08927014.2021.1890043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 01/29/2021] [Accepted: 02/01/2021] [Indexed: 06/12/2023]
Abstract
Biofouling is a widespread phenomenon in oceans worldwide. With increasing human development and activities in open and coastal waters, and due to the environmental impact of AF organotins and copper-based paint, the demand for nontoxic antifouling (AF) paints is increasing. Various bioassays for antimicrobial activity, anti-biofilm formation and anti-barnacle settlement were established to evaluate the possibility of using marine natural products as AF agents. A series of natural products, isolated from the marine-derived fungi Trichoderma atroviride and T. reesei, were evaluated for their AF activity. One pyrone-type compound (1) demonstrated significant inhibitory activities toward barnacle cyprid settlement. Furthermore, a series of pyrone analogues (S1-S6) were synthesized, and their bioactivities were evaluated in the established systems. The results showed that compounds S5 and S6 exhibited a broad spectrum of bioactivities, such as anti-barnacle settlement, anti-biofilm formation and antimicrobial activities.
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Affiliation(s)
- Mo Aqib Raza Khan
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Bo-Wei Wang
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Yih-Yu Chen
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Ting-Hsuan Lin
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Hsiu-Chin Lin
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, Taiwan, ROC
| | - Ka-Lai Pang
- Institute of Marine Biology and Centre of Excellence for the Oceans, National Taiwan Ocean University, Keelung, Taiwan, ROC
| | - Chih-Chuang Liaw
- Department of Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University, Kaohsiung, Taiwan, ROC
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan, ROC
- Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan, ROC
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8
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Ho YN, Hoo SY, Wang BW, Hsieh CT, Lin CC, Sun CH, Peng CC, Lin C, Yang YL. Specific inactivation of an antifungal bacterial siderophore by a fungal plant pathogen. ISME J 2021; 15:1858-1861. [PMID: 33619352 DOI: 10.1038/s41396-020-00871-0] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 11/24/2020] [Accepted: 12/07/2020] [Indexed: 02/07/2023]
Abstract
Bacteria and fungi secrete many natural products that inhibit each other's growth and development. The dynamic changes in secreted metabolites that occur during interactions between bacteria and fungi are complicated. Pyochelin is a siderophore produced by many Pseudomonas and Burkholderia species that induces systemic resistance in plants and has been identified as an antifungal agent. Through imaging mass spectrometry and metabolomics analysis, we found that Phellinus noxius, a plant pathogen, can modify pyochelin and ent-pyochelin to an esterification product, resulting in reduced iron-chelation and loss of antifungal activity. We also observed that dehydroergosterol peroxide, the fungal metabolite, is only accumulated in the presence of pyochelin produced through bacteria-fungi interactions. For the first time, we show the fungal transformation of pyochelin in the microbial interaction. Our findings highlight the importance of understanding the dynamic changes of metabolites in microbial interactions and their influences on microbial communities.
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Affiliation(s)
- Ying-Ning Ho
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan.,Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Pei-Ning Road, Keelung, 20224, Taiwan
| | - Sin Yong Hoo
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Bo-Wei Wang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan.,Doctor Degree Program in Marine Biotechnology, National Sun Yat-sen University/Academia Sinica, Kaohsiung, 80424, Taiwan
| | - Chi-Ting Hsieh
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Ching-Chih Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chi-Hui Sun
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chia-Chi Peng
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Chih Lin
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan
| | - Yu-Liang Yang
- Agricultural Biotechnology Research Center, Academia Sinica, Taipei, 11529, Taiwan.
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9
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Chen CH, Wang BW, Hsiao YC, Wu CY, Cheng FJ, Hsia TC, Chen CY, Wang Y, Weihua Z, Chou RH, Tang CH, Chen YJ, Wei YL, Hsu JL, Tu CY, Hung MC, Huang WC. PKCδ-mediated SGLT1 upregulation confers the acquired resistance of NSCLC to EGFR TKIs. Oncogene 2021; 40:4796-4808. [PMID: 34155348 PMCID: PMC8298203 DOI: 10.1038/s41388-021-01889-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 05/18/2021] [Accepted: 06/04/2021] [Indexed: 02/06/2023]
Abstract
The tyrosine kinase inhibitors (TKIs) targeting epidermal growth factor receptor (EGFR) have been widely used for non-small cell lung cancer (NSCLC) patients, but the development of acquired resistance remains a therapeutic hurdle. The reduction of glucose uptake has been implicated in the anti-tumor activity of EGFR TKIs. In this study, the upregulation of the active sodium/glucose co-transporter 1 (SGLT1) was found to confer the development of acquired EGFR TKI resistance and was correlated with the poorer clinical outcome of the NSCLC patients who received EGFR TKI treatment. Blockade of SGLT1 overcame this resistance in vitro and in vivo by reducing glucose uptake in NSCLC cells. Mechanistically, SGLT1 protein was stabilized through the interaction with PKCδ-phosphorylated (Thr678) EGFR in the TKI-resistant cells. Our findings revealed that PKCδ/EGFR axis-dependent SGLT1 upregulation was a critical mechanism underlying the acquired resistance to EGFR TKIs. We suggest co-targeting PKCδ/SGLT1 as a potential strategy to improve the therapeutic efficacy of EGFR TKIs in NSCLC patients.
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Affiliation(s)
- Chia-Hung Chen
- grid.411508.90000 0004 0572 9415Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092School of Medicine, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Department of Respiratory Therapy, China Medical University, Taichung, Taiwan
| | - Bo-Wei Wang
- grid.254145.30000 0001 0083 6092Center for Molecular Medicine, Research Center for Cancer Biology, and Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Drug Development Center, China Medical University, Taichung, Taiwan
| | - Yu-Chun Hsiao
- grid.254145.30000 0001 0083 6092Center for Molecular Medicine, Research Center for Cancer Biology, and Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Drug Development Center, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
| | - Chun-Yi Wu
- grid.260539.b0000 0001 2059 7017Department of Biomedical Imaging and Radiological Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Fang-Ju Cheng
- grid.254145.30000 0001 0083 6092The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan ,grid.240145.60000 0001 2291 4776Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX USA
| | - Te-Chun Hsia
- grid.411508.90000 0004 0572 9415Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Department of Respiratory Therapy, China Medical University, Taichung, Taiwan ,grid.411508.90000 0004 0572 9415Department of Internal Medicine, Hyperbaric Oxygen Therapy Center, China Medical University Hospital, Taichung, Taiwan
| | - Chih-Yi Chen
- grid.411641.70000 0004 0532 2041Division of Thoracic Surgery, Department of Surgery, Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yihua Wang
- grid.5491.90000 0004 1936 9297Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton, UK ,grid.5491.90000 0004 1936 9297Institute for Life Sciences, University of Southampton, Southampton, UK
| | - Zhang Weihua
- grid.266436.30000 0004 1569 9707Department of Biology and Biochemistry, University of Houston, Houston, TX USA
| | - Ruey-Hwang Chou
- grid.254145.30000 0001 0083 6092Center for Molecular Medicine, Research Center for Cancer Biology, and Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
| | - Chih-Hsin Tang
- grid.254145.30000 0001 0083 6092School of Medicine, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Yun-Ju Chen
- grid.414686.90000 0004 1797 2180Department of Medical Research, E-Da Hospital, Kaohsiung, Taiwan ,grid.411447.30000 0004 0637 1806School of Medicine for International Students, I-Shou University, Kaohsiung, Taiwan ,grid.414686.90000 0004 1797 2180Department of Pharmacy, E-Da Hospital, Kaohsiung, Taiwan
| | - Ya-Ling Wei
- grid.254145.30000 0001 0083 6092Center for Molecular Medicine, Research Center for Cancer Biology, and Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan
| | - Jennifer L. Hsu
- grid.254145.30000 0001 0083 6092Center for Molecular Medicine, Research Center for Cancer Biology, and Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan ,grid.240145.60000 0001 2291 4776Department of Molecular and Cellular Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX USA
| | - Chih-Yen Tu
- grid.411508.90000 0004 0572 9415Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092School of Medicine, China Medical University, Taichung, Taiwan
| | - Mien-Chie Hung
- grid.254145.30000 0001 0083 6092Center for Molecular Medicine, Research Center for Cancer Biology, and Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Drug Development Center, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
| | - Wei-Chien Huang
- grid.254145.30000 0001 0083 6092Center for Molecular Medicine, Research Center for Cancer Biology, and Graduate Institute of Biomedical Sciences, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092Drug Development Center, China Medical University, Taichung, Taiwan ,grid.254145.30000 0001 0083 6092The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan ,grid.252470.60000 0000 9263 9645Department of Medical Laboratory Science and Biotechnology, Asia University, Taichung, Taiwan
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Li JH, Ma J, Kang W, Wang CF, Bai F, Zhao K, Yao N, Liu Q, Dang BL, Wang BW, Wei QQ, Kang WZ, Sun YT. The histone deacetylase inhibitor chidamide induces intermittent viraemia in HIV-infected patients on suppressive antiretroviral therapy. HIV Med 2020; 21:747-757. [PMID: 33369029 DOI: 10.1111/hiv.13027] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
OBJECTIVES To evaluate the safety and efficacy of chidamide to reverse HIV-1 latency in vivo and to compare the effects of four clinically tested histone deacetylase (HDAC) inhibitors on non-histone proteins in vitro. METHODS Participants received chidamide orally at 10 mg twice weekly for 4 weeks while maintaining baseline antiretroviral therapy. The primary outcome was plasma viral rebound during chidamide dosing and the secondary outcomes were safety, pharmacokinetic and pharmacodynamic profiles, changes in cell-associated HIV-1 RNA and HIV-1 DNA, and immune parameters. Western blotting was used to compare the in vitro effects of the four HDAC inhibitors on HSP90, NF-κB and AP-1. RESULTS Seven aviraemic participants completed eight oral doses of chidamide, and only grade 1 adverse events were observed. Cyclic increases in histone acetylation were also detected. All participants showed robust and repeated plasma viral rebound (peak viraemia 147-3850 copies/mL), as well as increased cell-associated HIV-1 RNA, during chidamide treatment. Furthermore, we identified an enhanced HIV-1-specific cellular immune response and a modest 37.7% (95% CI: 12.7-62.8%, P = 0.028) reduction in cell-associated HIV-1 DNA. Compared with the other three HDAC inhibitors, chidamide had minimal cytotoxicity in vitro at clinically relevant concentrations and showed mechanistically superior effects on non-histone proteins, including HSP90, NF-κB and AP-1. CONCLUSIONS Chidamide safely and vigorously disrupts HIV-1 latency in vivo, which makes it a promising latency-reversing agent.
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Affiliation(s)
- J H Li
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - J Ma
- Department of Gastroenterology, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - W Kang
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - C F Wang
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - F Bai
- Department of Infectious Diseases, 986 Hospital of Air Force affiliated to Xijing Hospital, The Air Force Military Medical University, Xi'an, China
| | - K Zhao
- Department of Infectious Diseases, 986 Hospital of Air Force affiliated to Xijing Hospital, The Air Force Military Medical University, Xi'an, China
| | - N Yao
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - Q Liu
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - B L Dang
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - B W Wang
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - Q Q Wei
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - W Z Kang
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
| | - Y T Sun
- Department of Infectious Diseases, Tangdu Hospital, The Air Force Military Medical University, Xi'an, China
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11
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Huang Y, Bai GC, Song LK, Wang BW. Decomposed Collaborative Modeling Approach for Probabilistic Fatigue Life Evaluation of Turbine Rotor. Materials (Basel) 2020; 13:ma13143239. [PMID: 32708207 PMCID: PMC7412571 DOI: 10.3390/ma13143239] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 07/20/2020] [Accepted: 07/20/2020] [Indexed: 11/29/2022]
Abstract
To improve simulation accuracy and efficiency of probabilistic fatigue life evaluation for turbine rotor, a decomposed collaborative modeling approach is presented. In this approach, the intelligent Kriging modeling (IKM) is firstly proposed by combining the Kriging model (KM) and an intelligent algorithm (named as dynamic multi-island genetic algorithm), to tackle the multi-modality issues for obtaining optimal Kriging parameters. Then, the decomposed collaborative IKM (DCIKM) comes up by fusing the IKM into decomposed collaborative (DC) strategy, to address the high-nonlinearity problems for accelerating simulation efficiency. Moreover, the DCIKM-based probabilistic fatigue life evaluation theory is introduced. The probabilistic fatigue life evaluation of turbine rotor is regarded as case study to verify the presented approach; the evaluation results reveal that the probabilistic fatigue life of turbine rotor is 3296 cycles. The plastic strain range ∆εp and fatigue strength coefficient σf′ are the main affecting factors to fatigue life, whose effect probability are 28% and 22%, respectively. By comparing with direct Monte Carlo method, KM method, IKM method and DC response surface method, the presented DCIKM is validated to hold high efficiency and accuracy in probabilistic fatigue life evaluation.
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Affiliation(s)
- Ying Huang
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China; (Y.H.); (G.-C.B.)
| | - Guang-Chen Bai
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China; (Y.H.); (G.-C.B.)
| | - Lu-Kai Song
- School of Energy and Power Engineering, Beihang University, Beijing 100191, China; (Y.H.); (G.-C.B.)
- Correspondence:
| | - Bo-Wei Wang
- School of Computer Science and Engineering, Beihang University, Beijing 100191, China;
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12
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Tang PF, Hou ZY, Wu XB, Zhang CQ, Wang JW, Xing X, Shao ZW, Yu AX, Wang G, Chen B, Zhang P, Hu YJ, Wang BW, Guo XD, Tang X, Zhou DS, Liu F, Chen AM, Zhang K, Li KN, Zhu YB. Expert consensus on management principles of orthopedic emergency in the epidemic of coronavirus disease 2019. Chin Med J (Engl) 2020; 133:1096-1098. [PMID: 32358326 PMCID: PMC7213622 DOI: 10.1097/cm9.0000000000000810] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Pei-Fu Tang
- Department of Orthopedics, Department of Orthopedics, The First Medical Center, Chinese PLA General Hospital, Beijing 100853, China
| | - Zhi-Yong Hou
- Emergency Center of Trauma, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
| | - Xin-Bao Wu
- Department of Traumatology and Orthopedics, Beijing Jishuitan Hospital, Beijing 100035, China
| | - Chang-Qing Zhang
- Department of Orthopedics, The Sixth People's Hospital Affiliated to Shanghai Jiaotong University, Shanghai 200233, China
| | - Jun-Wen Wang
- Department of Orthopedics, Wuhan Fourth Hospital, Wuhan, Hubei 430034, China
| | - Xin Xing
- Emergency Center of Trauma, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
| | - Zeng-Wu Shao
- Department of Orthopedics, Union Hospital Tongji Medical College Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Ai-Xi Yu
- Department of Trauma Microsurgery, Zhongnan Hospital of Wuhan University, Wuhan, Hubei 430071, China
| | - Gang Wang
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Bin Chen
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Ping Zhang
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Yan-Jun Hu
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Bo-Wei Wang
- Department of Orthopedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiao-Dong Guo
- Department of Orthopedics, Union Hospital Tongji Medical College Huazhong University of Science and Technology, Wuhan, Hubei 430022, China
| | - Xin Tang
- Department of Orthopedics, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, China
| | - Dong-Sheng Zhou
- Department of Orthopedics, Shandong Provincial Hospital, Jinan, Shandong 25002, China
| | - Fan Liu
- Department of Orthopedics, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, China
| | - Ai-Mi Chen
- Department of Orthopedics, Changzheng Hospital Affiliated to Naval Military Medical University, Shanghai 200003, China
| | - Kun Zhang
- Department of Orthopedics, Honghui Hospital Affiliated to Medical College of Xi'an Jiaotong University, Xi'an Shaanxi 710054, China
| | - Kai-Nan Li
- Department of Orthopedics, Affiliated Hospital of Chengdu University, Chengdu, Sichuan 610081, China
| | - Yan-Bin Zhu
- Emergency Center of Trauma, Third Hospital of Hebei Medical University, Shijiazhuang, Hebei 050051, China
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13
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Chen WT, Zhang F, Zhao XQ, Yu B, Wang BW. Galectin-3 and TRIM16 coregulate osteogenic differentiation of human bone marrow-derived mesenchymal stem cells at least partly via enhancing autophagy. Bone 2020; 131:115059. [PMID: 31521826 DOI: 10.1016/j.bone.2019.115059] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 12/14/2022]
Abstract
BACKGROUND The osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (hBMSCs) is critical for bone homeostasis. Here, we investigated the regulation of Galectin-3 and tripartite motif protein 16 (TRIM16) on osteogenic differentiation of hBMSCs through autophagy. METHODS Quantitative PCR (qPCR) and western blot were performed to determine the expression of osteogenic markers, autophagic markers, Galectin-3 and TRIM16. Short-hairpin RNAs (shRNAs) and overexpression plasmids were used to manipulate the expression of Galectin-3, TRIM16 and Unc-51 like autophagy activating kinase 1 (ULK1). Alkaline phosphatase (ALP) activity was measured by ALP staining assay. Calcium deposition in differentiated hBMSCs was assessed by Alizarin Red S staining. LC3 puncta formation was monitored by immunofluorescence staining. The interaction between indicated proteins was confirmed by co-immunoprecipitation (Co-IP) assay. RESULTS Either Galectin-3 or TRIM16 knockdown led to impaired ALP activity, reduced calcium deposition, down-regulation of pro-osteogenic markers as well as restrained autophagy in osteogenic-induced hBMSCs. However, overexpression of Galectin-3 or TRIM16 promoted osteogenic differentiation of hBMSCs, which was then compromised by autophagy inhibition. Co-IP experiment demonstrated that TRIM16 associated with Galectin-3 through ULK1. Meanwhile, osteogenic induction enhanced the association between TRIM16 and ULK1 or coiled-coil myosin-like BCL2-interacting protein (Beclin1), and TRIM16 increased the stability of ULK1 and Beclin1. Moreover, either TRIM16 or ULK1 knockdown dampened the pro-osteogenic effect of Galectin-3, which elucidated that Galectin-3 mediated osteogenic differentiation was at least partly dependent on TRIM16 and ULK1. CONCLUSION In summary, the present study revealed Galectin-3 and TRIM16 co-regulated osteogenic differentiation of hBMSCs at least partly via enhancing autophagy, which might provide a promising approach for osteoporosis treatment in future.
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Affiliation(s)
- Wen-Ting Chen
- Department of Anesthesiology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Fan Zhang
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Xing-Qi Zhao
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China
| | - Bin Yu
- Guangdong Provincial Key Laboratory of Bone and Cartilage Regenerative Medicine, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China.
| | - Bo-Wei Wang
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, PR China.
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14
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Abstract
Currently, accurate diagnosis and successful treatment of infection after fracture fixation (IAFF) still impose great challenges. According to the onset of infection symptoms after implantation, IAFF is classified as early infection (<2 weeks), delayed infection (2∼10 weeks) and late infection (>10 weeks). Confirmation of IAFF should be supported by histopathological tests of intraoperative specimens which confirm infection, cultures from at least two suspected infection sites which reveal the same pathogen, a definite sinus or fistula which connects directly the bone or the implant, and purulent drainage from the wound or presence of pus during surgery. Diagnosis of IAFF is built on comprehensive assessment of medical history, clinical signs and symptoms of the patient, and imaging and laboratory tests. The gold standard of diagnosis is histopathological tests. Treatment of IAFF consists of radical debridement, adequate irrigation, implant handling, systematic and local antibiotics, reconstruction of osseous and/or soft tissue defects, and functional rehabilitation of an affected limb. Early accurate diagnosis and appropriate treatment of IAFF play a key role in increasing the cure rate, reducing infection recurrence and disability risk, restoring limb function and improving quality of life of the patient.
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Affiliation(s)
- Nan Jiang
- Department of Orthopaedics & Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Bo-Wei Wang
- Department of Orthopaedics & Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China
| | - Yi-Min Chai
- Department of Orthopaedics, The Sixth People's Hospital of Shanghai Jiao Tong University, Shanghai, PR China
| | - Xin-Bao Wu
- Department of Orthopaedics & Traumatology, Beijing Jishuitan Hospital, Beijing, PR China.
| | - Pei-Fu Tang
- Department of Orthopaedics, Chinese PLA General Hospital, Beijing, PR China.
| | - Ying-Ze Zhang
- Department of Orthopaedics, The Third Hospital of Hebei Medical University, Shijiazhuang, PR China.
| | - Bin Yu
- Department of Orthopaedics & Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou, PR China.
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15
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Wang BW, Jiang Y, Yao ZL, Chen PS, Yu B, Wang SN. Aucubin Protects Chondrocytes Against IL-1β-Induced Apoptosis In Vitro And Inhibits Osteoarthritis In Mice Model. Drug Des Devel Ther 2019; 13:3529-3538. [PMID: 31631977 PMCID: PMC6791845 DOI: 10.2147/dddt.s210220] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 08/30/2019] [Indexed: 01/06/2023]
Abstract
Objective Chondrocyte apoptosis has also been strongly correlated with the severity of cartilage damage and matrix depletion in an osteoarthritis (OA) joint. Therefore, pharmacological inhibitors of apoptosis may provide a novel treatment option for patients with OA. Aucubin, a natural compound isolated from Eucommia ulmoides, has been proved to possess antioxidative and anti-apoptotic properties. However, anti-osteoarthritis effect of aucubin in animal model and anti-apoptotic response of aucubin in OA chondrocytes remain unclear. This study aimed to determine whether aucubin could slow progression of OA in a mouse model and inhibit the IL-1β-induced chondrocyte apoptosis. Methods OA severity and articular cartilage degradation were evaluated by Safranin-O staining, Hematoxylin-eosin (H&E) staining, and Osteoarthritis Research Society International (OARSI) standards. Chondrocyte viability was observed by Cell Counting Kit-8 (CCK8) and live/dead cells assay; the apoptotic rate of chondrocytes was evaluated by flow cytometry (FCM) with Annexin V-FITC/PI kit. Mediators of apoptosis were tested by Western blot of Bax, caspase-3, caspase-9, and Bcl-2 expression. The intracellular levels of Reactive oxygen species (ROS) were assessed by the probe of 2,7-Dichlorofluorescin diacetate (DCFH-DA). Results The articular cartilage in the limb with destabilization of the medial meniscus (DMM) exhibited early OA-like manifestations characterized by proteoglycan loss, cartilage fibrillation, and erosion, with lower OARSI score. Oral administration of aucubin remarkably attenuated the loss of proteoglycan and the articular cartilage erosion and decreased the OARSI scores underwent DMM surgery. Aucubin treatment significantly reverses IL-1β-induced cytotoxicity and attenuated the IL-1β-induced chondrocyte apoptosis. In addition, aucubin can significantly inhibit mediators of apoptosis in rat primary chondrocytes. Furthermore, aucubin remarkably attenuated the IL-1β-induced intracellular ROS production. Conclusion Our findings suggest that aucubin has a protective effect on articular cartilage and slowing progression of OA in a mouse model. This protective effect may result from inhibiting chondrocyte apoptosis and excessive ROS production.
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Affiliation(s)
- Bo-Wei Wang
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Yi Jiang
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Zi-Long Yao
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Pei-Sheng Chen
- Department of Orthopaedics, Fuzhou Second Hospital Affiliated to Xiamen University, Fuzhou, Fujian 350007, People's Republic of China
| | - Bin Yu
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, People's Republic of China
| | - Sheng-Nan Wang
- Department of Orthopaedics and Traumatology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, People's Republic of China
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16
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Wang L, Han M, Wang BW. [The correlation studies between ambulatory blood pressure and OSA in non-hypertensive patients]. Lin Chung Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 33:666-669. [PMID: 31327210 DOI: 10.13201/j.issn.1001-1781.2019.07.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Indexed: 11/12/2022]
Abstract
Objective:To discuss the changes and rules of nighttime blood pressure in obstructive sleep apnea(OSA) patients without hypertension.Method:Eighty-nine non-hypertensive patients whose office blood pressure was lower than 130/85 mmHg and diagnose with OSA by PSG in sleep monitoring room were choose as the research group.Forty non-hypertensive and polyp of vocal cord or vocal nodules patients whose office blood pressure was lower than 130/85 mmHg and diagnose with non-OSA by PSG were choose as matched group.All the patients were in treatment in our hospital from December 2017 to June 2018. All the patients got PSG,and the same time got the ambulatory blood pressure monitoring based on pulse transit time all night.Compared the mean value of systolic blood pressure,the mean value of diastolic blood pressure.Higher than 12 mmHg blood pressure rise index,the mean rise in blood pressure. The highest increase in blood pressure, maximum systolic pressure between the study group and the marched group all night.Result:The difference of all the test index between the study group and the marched group was significant(P<0.05).In OSA patients.The difference of all the test index between the severe OSA group and the mild OSA group or the moderate OSA group was significant(P<0.05).In severe OSA group.The difference between the fluctuation of blood pressure caused by respiratory events and spontaneous blood pressure fluctuation was significant(P=0.004).The difference of the mean value of diastolic blood pressure(P=0.032) blood pressure rise index(P=0.037) the mean rise in blood pressure(P=0.045) between age 55 or older patients and under 55years old patients.Conclusion:Ambulatory blood pressure monitoring synchronizatied in PSG contribute to the early diagnosis and prevention of hypertension in OSA patients.
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Affiliation(s)
- L Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Affiliated Hospital of Qingdao University,Qingdao,266000,China
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17
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Su YX, Du GL, Shen HL, Wang W, Bao JL, Aierken A, Wang BW, Jiang S, Zhu J, Gao XM. Increased expression of aromatase cytochrome P450 enzyme is associated with prolactinoma invasiveness in post-menopausal women. J Int Med Res 2019; 47:3115-3126. [PMID: 31179796 PMCID: PMC6683891 DOI: 10.1177/0300060519848916] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [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] [Indexed: 11/15/2022] Open
Abstract
Objectives To investigate the expression levels of aromatase cytochrome P450 enzyme (P450AROM) and related molecules—estrogen receptor-beta (ER-β), Ki-67, and p53—in prolactinoma tumor tissue from pre- and post-menopausal women, and to determine the associations of tumor invasiveness with expression levels of these genes. Methods This study recruited 90 patients with prolactinoma who underwent adenoidectomy between 2012 and 2017. Information was collected regarding clinical characteristics, hormones, laboratory tests, and magnetic resonance imaging-assessed tumor invasiveness. Expression levels of P450AROM, ER-β, Ki-67, and p53 were examined by immunohistochemistry in prolactinoma tissues. Results Increased P450AROM expression was found in invasive prolactinoma tissues in post-menopausal women, compared with its expression in non-invasive prolactinoma tissues. ER-β level was significantly higher in patients resistant to treatment with bromocriptine, a dopamine agonist. However, there were no differences in rate of resistance to treatment (8.2% vs. 3.4%) or expression levels of P450AROM, Ki-67, p53, and ER-β between pre- and post-menopausal patients. Conclusions Our results demonstrated that increased P450AROM expression in prolactinoma of post-menopausal women was positively associated with invasiveness. Moreover, ER-β level was higher in both pre- and post-menopausal patients who were resistant to dopamine agonist treatment.
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Affiliation(s)
- Yin-Xia Su
- 1 Center of Health Management, The First Affiliated Hospital, Xinjiang Medical University, Urumqi, China
| | - Guo-Li Du
- 2 Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Hong-Li Shen
- 3 Department of Oncology, The Sixth Division Hospital, Xinjiang Production and Construction Corps, Urumqi, China
| | - Wen Wang
- 4 Department of Pathology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jian-Ling Bao
- 5 Medical Experimental Center, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Aizezijiang Aierken
- 6 Department of Pharmacology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Bo-Wei Wang
- 4 Department of Pathology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Sheng Jiang
- 2 Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Jun Zhu
- 2 Department of Endocrinology, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, China
| | - Xiao-Ming Gao
- 7 Xinjiang Key Laboratory of Medical Animal Model Research, Clinical Medical Research Institute of Xinjiang Medical University, Urumqi, China
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18
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Liaw CC, Chang JL, Wang BW, Chen PL, Weng JR, Lin KW, Lin CN. Discovering a Racemate Polycyclic Prenylated Acylphloroglucinol with Unprecedented Skeleton by an ESI-LCMS Analytical Approach. Org Lett 2019; 21:857-861. [DOI: 10.1021/acs.orglett.8b03445] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Chih-Chuang Liaw
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Jia-Lin Chang
- Department of Science Education and Application, National Taichung University of Education, Taichung 40306, Taiwan
| | - Bo-Wei Wang
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Pei-Lin Chen
- Instrumentation Center, National Tsing Hua University, Hsinchu 30013, Taiwan
| | - Jing-Ru Weng
- Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Kai-Wei Lin
- School of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chun-Nan Lin
- Faculty of Fragrance and Cosmetics, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
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19
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Tu CY, Wang BW, Cheng FJ, Chen CH, Hsia TC, Wei YL, Chen CY, Hsieh IS, Yeh YL, Wang LY, Chen CM, Chang WC, Huang WC. Incense burning smoke sensitizes lung cancer cells to EGFR TKI by inducing AREG expression. Am J Cancer Res 2018; 8:2575-2589. [PMID: 30662813 PMCID: PMC6325473] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 11/13/2018] [Indexed: 06/09/2023] Open
Abstract
Incense burning is common in Asian countries due to the religious beliefs. Environmental exposure to incense burning smoke is a potential risk factor for tumor development and progression of non-small cell lung cancer (NSCLC). Eastern Asia ethnic origin is strongly associated the clinical benefits of epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs) in NSCLC patients. However, the impact of the oriental custom of incense burning on the cancer progression and the EGFR TKI-sensitivity of NSCLC remains unclear. Our results showed that long-term exposure to incense burning extract (IBE) increases the cellular proliferation with S phase accumulation and the motility activity of NSCLCs. Interestingly, IBE enhances EGFR signaling activity without affecting its genetic status, and increases the cellular sensitivity of NSCLC cell lines to EGFR TKIs. Auramine, a yellow dye for making incense sticks, was identified as a residual composition in the burning incense smoke, and showed similar EGFR TKI-sensitizing effects. Furthermore, IBE or auramine transcriptionally induce EGFR ligand amphiregulin (AREG) expression for the enhancement of EGFR activity. Neutralization of AREG reduced the viability of IBE-treated cells. These results indicated that exposure to incent smoke may enhance NSCLC progression and their sensitivity to EGFR TKIs through increasing their oncogenic addiction to AREG-induced EGFR signaling.
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Affiliation(s)
- Chih-Yen Tu
- Department of Life Science, National Chung Hsing UniversityTaichung 402, Taiwan
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University HospitalTaichung 404, Taiwan
- School of Medicine, China Medical UniversityTaichung 404, Taiwan
| | - Bo-Wei Wang
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
| | - Fang-Ju Cheng
- Graduate Institute of Basic Medical Science, China Medical UniversityTaichung 404, Taiwan
| | - Chia-Hung Chen
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University HospitalTaichung 404, Taiwan
- School of Medicine, China Medical UniversityTaichung 404, Taiwan
- Department of Respiratory Therapy, China Medical UniversityTaichung 404, Taiwan
- Graduate Institute of Clinical Medical Science, China Medical UniversityTaichung 404, Taiwan
| | - Te-Chun Hsia
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University HospitalTaichung 404, Taiwan
- Department of Respiratory Therapy, China Medical UniversityTaichung 404, Taiwan
- Hyperbaric Oxygen Therapy Center, Department of Internal Medicine, China Medical University HospitalTaichung 404, Taiwan
| | - Ya-Ling Wei
- Center for Molecular Medicine, China Medical University and HospitalTaichung 404, Taiwan
| | - Chih-Yi Chen
- Department of Surgery, Chang Shan Medical UniversityTaichung, Taiwan
| | - I-Shan Hsieh
- School of Medicine, China Medical UniversityTaichung 404, Taiwan
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
| | - Yi-Lun Yeh
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
| | - Li-Yun Wang
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
| | - Chuan-Mu Chen
- The iEGG and Animal Biotechnology Center, Ph.D. Program in Translational Medicine, National Chung Hsing UniversityTaichung 402, Taiwan
| | - Wei-Chao Chang
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
- Center for Molecular Medicine, China Medical University and HospitalTaichung 404, Taiwan
- The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia SinicaTaichung 404, Taiwan
| | - Wei-Chien Huang
- Graduate Institute of Biomedical Sciences, China Medical UniversityTaichung 404, Taiwan
- Center for Molecular Medicine, China Medical University and HospitalTaichung 404, Taiwan
- The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia SinicaTaichung 404, Taiwan
- Department of Biotechnology, College of Health Science, Asia UniversityTaichung 413, Taiwan
- Drug Development Center, China Medical UniversityTaichung, Taiwan
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20
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Tu CY, Cheng FJ, Chen CM, Wang SL, Hsiao YC, Chen CH, Hsia TC, He YH, Wang BW, Hsieh IS, Yeh YL, Tang CH, Chen YJ, Huang WC. Cigarette smoke enhances oncogene addiction to c-MET and desensitizes EGFR-expressing non-small cell lung cancer to EGFR TKIs. Mol Oncol 2018; 12:705-723. [PMID: 29570930 PMCID: PMC5928373 DOI: 10.1002/1878-0261.12193] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 11/15/2017] [Revised: 02/13/2018] [Accepted: 02/20/2018] [Indexed: 12/23/2022] Open
Abstract
Cigarette smoking is one of the leading risks for lung cancer and is associated with the insensitivity of non‐small cell lung cancer (NSCLC) to epidermal growth factor receptor (EGFR) tyrosine kinase inhibitors (TKIs). However, it remains undetermined whether and how cigarette smoke affects the therapeutic efficacy of EGFR TKIs. In this study, our data showed that chronic exposure to cigarette smoke extract (CSE) or tobacco smoke‐derived carcinogen benzo[α]pyrene, B[α]P, but not nicotine‐derived nitrosamine ketone (NNK), reduced the sensitivity of wild‐type EGFR‐expressing NSCLC cells to EGFR TKIs. Treatment with TKIs almost abolished EGFR tyrosine kinase activity but did not show an inhibitory effect on downstream Akt and ERK pathways in B[α]P‐treated NSCLC cells. CSE and B[α]P transcriptionally upregulate c‐MET and activate its downstream Akt pathway, which is not inhibited by EGFR TKIs. Silencing of c‐MET reduces B[α]P‐induced Akt activation. The CSE‐treated NSCLC cells are sensitive to the c‐MET inhibitor crizotinib. These findings suggest that cigarette smoke augments oncogene addiction to c‐MET in NSCLC cells and that MET inhibitors may show clinical benefits for lung cancer patients with a smoking history.
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Affiliation(s)
- Chih-Yen Tu
- Department of Life Science, the iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan.,Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,School of Medicine, China Medical University, Taichung, Taiwan
| | - Fang-Ju Cheng
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan
| | - Chuan-Mu Chen
- Department of Life Science, the iEGG and Animal Biotechnology Center, National Chung Hsing University, Taichung, Taiwan
| | - Shu-Ling Wang
- Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan
| | - Yu-Chun Hsiao
- The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
| | - Chia-Hung Chen
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,Department of Respiratory Therapy, China Medical University, Taichung, Taiwan
| | - Te-Chun Hsia
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan.,Department of Respiratory Therapy, China Medical University, Taichung, Taiwan.,Hyperbaric Oxygen Therapy Center, Department of Internal Medicine, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Hao He
- The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan
| | - Bo-Wei Wang
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - I-Shan Hsieh
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Yi-Lun Yeh
- Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Chih-Hsin Tang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan
| | - Yun-Ju Chen
- Department of Medical Research, E-DA Hospital, Kaohsiung, Taiwan.,Department of Biological Science & Technology, I-Shou University, Kaohsiung, Taiwan.,School of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Wei-Chien Huang
- Graduate Institute of Basic Medical Science, China Medical University, Taichung, Taiwan.,Graduate Institute of Cancer Biology, China Medical University, Taichung, Taiwan.,The Ph.D. Program for Cancer Biology and Drug Discovery, China Medical University and Academia Sinica, Taichung, Taiwan.,Graduate Institute of Biomedical Science, China Medical University, Taichung, Taiwan.,Center for Molecular Medicine, China Medical University and Hospital, Taichung, Taiwan.,Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan.,Research Center for New Drug Development, China Medical University, Taichung, Taiwan
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21
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Wang B, M Liu M, Wang BW, Li J, Lin ZH. Combined 3D-QSAR and Molecular Docking Study on benzo[h][1,6]naphthyridin-2(1H)-one Analogs as mTOR Inhibitors. Indian J Pharm Sci 2018. [DOI: 10.4172/pharmaceutical-sciences.1000331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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22
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Gao YL, Song ZB, Li WZ, Jiao FC, Wang R, Huang CJ, Li YP, Wang BW. NtBRC1 suppresses axillary branching in tobacco after decapitation. Genet Mol Res 2016; 15:gmr-15-04-gmr.15049320. [PMID: 28002608 DOI: 10.4238/gmr15049320] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Axillary branching is controlled by a very complex mechanism involving various endogenous and environmental factors. Previous studies have shown that Tb1/BRC1 is the point of integration in the network of molecular mechanisms regulating axillary branching in plants. In this study, we cloned the Tb1/BRC1 ortholog, NtBRC1, from Nicotiana tabacum and functionally analyzed its role in the control of axillary branching in tobacco. Overexpression of NtBRC1 resulted in significant retardation of axillary branching, and downregulation of this gene resulted in significant acceleration of axillary branching after decapitation. This indicates a negative role for this gene in the regulation of axillary branching. In-line with previous reports, NtBRC1 was found to be expressed predominantly in axillary buds. Additionally, as expected, expression was decreased 8 h following decapitation, which further confirms its role in the suppression of axillary branching. Furthermore, the expression of NtBRC1 was significantly downregulated by cytokinin, but was not affected by GR24, a synthetic strigolactone. Based on the data collected in the present study, we demonstrate that NtBRC1 negatively regulates axillary branching in tobacco after decapitation and functions downstream of the cytokinin signaling pathway inside axillary buds.
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Affiliation(s)
- Y L Gao
- Yunnan Academy of Tobacco Agricultural Sciences, Key Laboratory of Tobacco Biotechnological Breeding, National Tobacco Genetic Engineering Research Center, Kunming, China
| | - Z B Song
- Yunnan Academy of Tobacco Agricultural Sciences, Key Laboratory of Tobacco Biotechnological Breeding, National Tobacco Genetic Engineering Research Center, Kunming, China
| | - W Z Li
- Yunnan Academy of Tobacco Agricultural Sciences, Key Laboratory of Tobacco Biotechnological Breeding, National Tobacco Genetic Engineering Research Center, Kunming, China
| | - F C Jiao
- Yunnan Academy of Tobacco Agricultural Sciences, Key Laboratory of Tobacco Biotechnological Breeding, National Tobacco Genetic Engineering Research Center, Kunming, China
| | - R Wang
- Zhengzhou Tobacco Research Institute, Zhengzhou, China
| | - C J Huang
- Yunnan Academy of Tobacco Agricultural Sciences, Key Laboratory of Tobacco Biotechnological Breeding, National Tobacco Genetic Engineering Research Center, Kunming, China
| | - Y P Li
- Yunnan Academy of Tobacco Agricultural Sciences, Key Laboratory of Tobacco Biotechnological Breeding, National Tobacco Genetic Engineering Research Center, Kunming, China
| | - B W Wang
- Yunnan Academy of Tobacco Agricultural Sciences, Key Laboratory of Tobacco Biotechnological Breeding, National Tobacco Genetic Engineering Research Center, Kunming, China
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23
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Shapovalyants SG, Michalev AI, Timofeev ME, Polushkin VG, Volkov VV, Oettinger AP, Lorenz R, Koch A, Köckerling F, Burcharth J, Andresen K, Pommergaard HC, Bisgaard T, Rosenberg J, Friis-Andersen H, Li JW, Le F, Zheng MH, Roscio F, Combi F, Frattini P, Clerici F, Scandroglio I, Zhao X, Nie Y, Liu J, Wang M, Kuo L, Tsai CC, Mok KT, Liu SI, Chen IS, Chou NH, Wang BW, Chen YC, Chang BM, Liang TJ, Kang CH, Tsai CY, Dudai M, Zeng YJ, Liu TL, Shi CM, Sun L, Shu R, Kawaguchi M, Takahashi Y, Tochimoto M, Horiguchi Y, Kato H, Tawaraya K, Hosokawa O, Huang C, Sorge A, Masoni L, Maglio R, Di Marzo F, Mosconi C, Gallinella Muzi M, Kato J, Iuamoto L, Meyer A, Almehdi R, Alazri Y, Sahoo B, Ahmed R, Nasser M, Inaba T, Fukuhsima R, Yaguchi Y, Horikawa M, Ogawa E, Kumata Y, Pokorny H, Fischer I, Resinger C, Lorenz V, Podar S, Längue F, Etherson K, Atkinson K, Khan S, Pradeep R, Viswanath Y, Munipalle PC, Chung J, Schuricht A, Magalhães C, Marcos M, Flores A, Sekmen U, Paksoy M, Ceriani F, Cutaia S, Canziani M, Caravati F. Inguinal Hernia: Recurrences, Tailored Surgery & Pubic Inguinal Pain Syndrome (Sportsman Hernia). Hernia 2015; 19 Suppl 1:S167-75. [PMID: 26518795 DOI: 10.1007/bf03355345] [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: 11/28/2022]
Affiliation(s)
- S G Shapovalyants
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - A I Michalev
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - M E Timofeev
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - V G Polushkin
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - V V Volkov
- Department of Hospital Surgery 2, Russian National Research Medical University, Moscow, Russia
| | - A P Oettinger
- Institution of Applied Medical Sciences, Russian National Research Medical University, Moscow, Russia
| | - R Lorenz
- Hernia Center 3 Chirurgen, Berlin, Germany
| | - A Koch
- Surgical Practise, Cottbus, Germany
| | - F Köckerling
- Klinik für Allgemein, Viszeral und Gefäβchirurgie, Vivantes Klinikum Spandau, Berlin, Germany
| | - J Burcharth
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark
| | - K Andresen
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark.,Department of Surgery, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | - H-C Pommergaard
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark
| | - T Bisgaard
- Department of Surgery, Hvidovre Hospital, Hvidovre, Denmark.,The Danish Hernia Database, Copenhagen, Denmark
| | - J Rosenberg
- Center for Perioperative Optimization, Department of Surgery, Herlev Hospital, Herlev, Denmark.,The Danish Hernia Database, Copenhagen, Denmark.,Department of Surgery, Herlev Hospital, University of Copenhagen, Copenhagen, Denmark
| | | | - J W Li
- Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | | | | | - F Roscio
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - F Combi
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - P Frattini
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - F Clerici
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - I Scandroglio
- Department of Surgery - Division of General Surgery, Galmarini Hospital, Tradate, Italy
| | - X Zhao
- Beijing Chao-Yang Hospital, Beijing, China
| | | | | | | | - L Kuo
- Department of General Surgery, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | | | | | | | | | | | | | | | | | | | | | | | - M Dudai
- Hernia Excellence, Ramat Aviv Medical Center, Tel Aviv, Israel
| | - Y J Zeng
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - T L Liu
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - C M Shi
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - L Sun
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - R Shu
- Department of Gastroenterology and Hernia, The first affiliated hospital of Kunming Medical University, Kunming, China
| | - M Kawaguchi
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - Y Takahashi
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - M Tochimoto
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - Y Horiguchi
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - H Kato
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - K Tawaraya
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - O Hosokawa
- Yokohama Sakae Kyosai Hospital, Yokohama, Japan
| | - C Huang
- Cathay medical center, Taipei, Taiwan.,Taipei medical university, Taipei, Taiwan
| | - A Sorge
- Ospedale S. Giovanni Bosco, Napoli, Italy
| | | | - R Maglio
- Ospedale Israelitico, Roma, Italy
| | - F Di Marzo
- Ospedale S. Giovanni Bosco, Napoli, Italy
| | - C Mosconi
- Policlinico Universitario Tor Vergata, Roma, Italy
| | | | - J Kato
- University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - L Iuamoto
- University of Sao Paulo Medical School, Sao Paulo, Brazil
| | - A Meyer
- Abdominal Wall Repair Center, Samaritano Hospital, Sao Paulo, Brazil
| | | | | | | | | | | | - T Inaba
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - R Fukuhsima
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - Y Yaguchi
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - M Horikawa
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - E Ogawa
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - Y Kumata
- Department of Surgery, Teikyo University Hospital, Tokyo, Japan
| | - H Pokorny
- LK Wiener Neustadt, Wiener Neustadt, Austria
| | | | | | | | | | | | - K Etherson
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - K Atkinson
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - S Khan
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - R Pradeep
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | - Y Viswanath
- Department of Surgery, James Cook University Hospital, Middlesbrough, UK
| | | | - J Chung
- University of Pennsylvania Health System, Philadelphia, USA
| | - A Schuricht
- University of Pennsylvania Health System, Philadelphia, USA
| | | | - M Marcos
- Centro Hospitalar Porto, Porto, Portugal.,Institute Cuf, Porto, Portugal
| | - A Flores
- Centro Hospitalar Porto, Porto, Portugal.,Institute Cuf, Porto, Portugal
| | - U Sekmen
- Acibadem Hospital, Istanbul, Turkey
| | - M Paksoy
- Dept. of Gen. Surg., Istanbul Uni. Cerrahpasa Med. School, Istanbul, Turkey
| | - F Ceriani
- Multimedica Santa Maria, Castellanza, Va, Italy
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24
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Shi YH, Wang BW, Tuokan T, Li QZ, Zhang YJ. Association between micronucleus frequency and cervical intraepithelial neoplasia grade in Thinprep cytological test and its significance. Int J Clin Exp Pathol 2015; 8:8426-8432. [PMID: 26339413 PMCID: PMC4555741] [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] [Received: 05/22/2015] [Accepted: 06/28/2015] [Indexed: 06/05/2023]
Abstract
A micronucleus is an additional small nucleus formed due to chromosomes or chromosomal fragments fail to be incorporated into the nucleus during cell division. In this study, we assessed the utility of micronucleus counting as a screening tool in cervical precancerous lesions in Thinprep cytological test smears under oil immersion. High risk HPV was also detected by hybrid capture-2 in Thinprep cytological test smears. Our results showed that micronucleus counting was significantly higher in high-grade squamous intraepithelial lesion (HSIL) and invasive carcinoma cases compared to low-grade squamous intraepithelial lesion (LSIL) and non-neoplastic cases. Receiver operating characteristic (ROC) curve analysis revealed that micronucleus counting possessed a high degree of sensitivity and specificity for identifying HSIL and invasive carcinoma. Cut-off of 7.5 for MN counting gave a sensitivity of 89.6% and a specificity of 66.7% (P = 0.024 and AUC = 0.892) for detecting HSIL and invasive carcinoma lesions. Multiple linear regression analysis showed that only HSIL and invasive cancer lesions not age, duration of marital life and number of pregnancy are significantly associated with MN counting. The positive rate of high risk HPV was distinctly higher in LSIL, HSIL and invasive cancer than that in non-neoplstic categories. In conclusions, MN evaluation may be viewed as an effective biomarker for cervical cancer screening. The combination of MN count with HPV DNA detection and TCT may serve as an effective means to screen precancerous cervical lesions in most developing nations.
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Affiliation(s)
- Yong-Hua Shi
- Department of Pathology, Basic Medicine College of Xinjiang Medical UniversityUrumqi, Xinjiang, China
| | - Bo-Wei Wang
- Department of Pathology, First Affiliated Hospital of Xinjiang Medical UniversityUrumqi, Xinjiang, China
| | - Talaf Tuokan
- Department of Pathology, Basic Medicine College of Xinjiang Medical UniversityUrumqi, Xinjiang, China
| | - Qiao-Zhi Li
- Department of Pathology, Basic Medicine College of Xinjiang Medical UniversityUrumqi, Xinjiang, China
| | - Ya-Jing Zhang
- Department of Pathology, Hospital of Traditional Chinese Medicine Affiliated to Xinjiang Medical UniversityUrumqi, Xinjiang, China
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25
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Xia EQ, Wang BW, Xu XR, Zhu L, Song Y, Li HB. Microwave-assisted extraction of oleanolic acid and ursolic acid from Ligustrum lucidum Ait. Int J Mol Sci 2011; 12:5319-29. [PMID: 21954361 PMCID: PMC3179168 DOI: 10.3390/ijms12085319] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [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: 07/07/2011] [Revised: 08/09/2011] [Accepted: 08/12/2011] [Indexed: 11/17/2022] Open
Abstract
Oleanolic acid and ursolic acid are the main active components in fruit of Ligustrum lucidum Ait, and possess anticancer, antimutagenic, anti-inflammatory, antioxidative and antiprotozoal activities. In this study, microwave-assisted extraction of oleanolic acid and ursolic acid from Ligustrum lucidum was investigated with HPLC-photodiode array detection. Effects of several experimental parameters, such as type and concentration of extraction solvent, ratio of liquid to material, microwave power, extraction temperature and microwave time, on the extraction efficiencies of oleanolic acid and ursolic acid from Ligustrum lucidum were evaluated. The influence of experimental parameters on the extraction efficiency of ursolic acid was more significant than that of oleanolic acid (p < 0.05). The optimal extraction conditions were 80% ethanol aqueous solution, the ratio of material to liquid was 1:15, and extraction for 30 min at 70 °C under microwave irradiation of 500 W. Under optimal conditions, the yields of oleanolic acid and ursolic acid were 4.4 ± 0.20 mg/g and 5.8 ± 0.15 mg/g, respectively. The results obtained are helpful for the full utilization of Ligustrum lucidum, which also indicated that microwave-assisted extraction is a very useful method for extraction of oleanolic acid and ursolic acid from plant materials.
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Affiliation(s)
- En-Qin Xia
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; E-Mails: (E.-Q.X.); (B.-W.W.); (L.Z.); (Y.S.)
| | - Bo-Wei Wang
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; E-Mails: (E.-Q.X.); (B.-W.W.); (L.Z.); (Y.S.)
| | - Xiang-Rong Xu
- Key Laboratory of Marine Bio-resources Sustainable Utilization, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; E-Mail:
| | - Li Zhu
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; E-Mails: (E.-Q.X.); (B.-W.W.); (L.Z.); (Y.S.)
| | - Yang Song
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; E-Mails: (E.-Q.X.); (B.-W.W.); (L.Z.); (Y.S.)
| | - Hua-Bin Li
- Guangdong Provincial Key Laboratory of Food, Nutrition and Health, School of Public Health, Sun Yat-Sen University, Guangzhou 510080, China; E-Mails: (E.-Q.X.); (B.-W.W.); (L.Z.); (Y.S.)
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26
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Li SX, Wang BW, Liu D, He GL, Wang H, Duan YJ, Xing JJ, Zhou HY, Zhou YW. [Advance in animal models of traumatic brain injury]. Fa Yi Xue Za Zhi 2011; 27:286-294. [PMID: 21913561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Traumatic brain injury (TBI) is a highly complex multi-factorial disorder. Animal models of TBI are used to elucidate primary and secondary injury mechanisms and pathophysiological changes and to provide the diagnostic and therapeutical basis for TBI. The choices of animal models depend upon the research objectives. However, various animal models have limitations. The models only can duplicate the pivotal injury mechanisms or a certain important pathophysiological course. The characteristics of human TBI can not fully be reflected by using these models. In the review, animal models of traumatic brain injury are classified as dynamic direct brain injury, indirect dynamic brain injury and combined neuro-traumatic models. Several common models are described for consideration.
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Affiliation(s)
- Shang-Xun Li
- Department of Forensic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China.
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Wang SSS, Liu KN, Wang BW. Effects of dithiothreitol on the amyloid fibrillogenesis of hen egg-white lysozyme. Eur Biophys J 2010; 39:1229-42. [DOI: 10.1007/s00249-010-0576-0] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2009] [Revised: 12/03/2009] [Accepted: 01/13/2010] [Indexed: 10/19/2022]
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Abstract
BACKGROUND Growth arrest and DNA damage-inducible gene 153 (GADD153), an apoptosis regulated gene, increased during endoplasmic reticulum stress. However, the expression of GADD153 in cardiomyocytes under mechanical stress is little known. We aimed to investigate the regulation mechanism of GADD153 expression and apoptosis induced by mechanical stress in cardiomyocytes. MATERIALS AND METHODS Aorta-caval shunt was performed in adult Sprague-Dawley rats to induce volume overload. Rat neonatal cardiomyocytes grown on a flexible membrane base were stretched by vacuum to 20% of maximum elongation, at 60 cycles min(-1). RESULTS The increased ventricular dimension measured using echocardiography in the shunt group (n = 8) was reversed to normal by treatment with chaperon 4-phenylbutyric acid (PBA) (n = 8) at 500 mg kg(-1) day(-1) orally for 3 days. GADD153 protein and mRNA were up-regulated in the shunt group when compared with sham group (n = 8). Treatment with PBA reversed the protein of GADD153 to the baseline values. The TUNEL assay showed that PBA reduced the apoptosis induced by volume overload. Cyclic stretch significantly increased GADD153 protein and mRNA expression after 14 h of stretch. Addition of c-jun N-terminal kinase (JNK) inhibitor SP600125, JNK small interfering RNA and tumour necrosis factor-alpha (TNF-alpha) antibody 30 min before stretch, reduced the induction of GADD153 protein. Stretch increased, while GADD153-Mut plasmid, SP600125 and TNF-alpha antibody abolished the GADD153 promoter activity induced by stretch. GADD153 mediated apoptosis induced by stretch was reversed by GADD153 siRNA, GADD153-Mut plasmid and PBA. CONCLUSIONS Mechanical stress enhanced apoptosis and GADD153 expression in cardiomyocytes. Treatment with PBA reversed both GADD153 expression and apoptosis induced by mechanical stress in cardiomyocytes.
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Affiliation(s)
- W P Cheng
- Taipei Medical University, Taipei, Taiwan
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Han LY, Ye MZ, Li HL, Wang BW, Wang Q. [Retention of biological features in human placental mesenchymal stem cells transfected by multidrug resistance gene]. Zhonghua Yi Xue Za Zhi 2009; 89:2793-2796. [PMID: 20137607] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
OBJECTIVE To transfer multidrug resistance gene (mdr1) into human placental mesenchymal stem cells (P-MSCs) by retroviral vector and assess the effects of mdr1 gene transduction upon biological features of P-MSCs. METHODS Human P-MSCs were isolated from trypsin-digested term placentas and then transduced by reconstructed retroviral vector containing mdr1 gene and green fluorescent protein (GFP) reporter gene. Flow cytometric analysis was employed to determine the immunophenotypes of transfected P-MSCs. And the proliferation and cell cycle were detected by methyl thiazolyl tetrazolium and propidium iodide staining. Ultrastructures of transfected P-MSCs were observed and different induction conditions used to direct the cells to differentiate into adipocytes and osteoblasts. RESULTS The transfected P-MSCs still expressed stem cell markers such as CD29, CD44 and CD73. The mean cumulative time of population doubling was 23.9 hours. The cellular cycle retained the proliferative characterization of stem cells. Ultrastructural features of transfected P-MSCs included increased surface microvilli, abundant mitochondria and slightly swollen rough endoplasmic reticulum. Furthermore these transfected cells demonstrated osteogenic and adipogenic differentiation potentials under appropriate conditions. CONCLUSION The mdr1 gene transduction by retroviral vector in vitro has no significant effect upon biological characteristics of P-MSCs. It might provide experimental references for the application of P-MSCs in high-dose tumor chemotherapy.
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Affiliation(s)
- Li-Ying Han
- Department of Obstetrics and Gynecology, Second Hospital, Jilin University, Changchun 130041, China
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30
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Abstract
BACKGROUND Mechanical stress increases myocardial myostatin expression. However, the expression of myostatin in chronic heart failure resulting from volume-overload and after treatment with beta-blockers is little known. The authors hypothesize that myostatin plays a role in the failing myocardium because of volume-overload. MATERIALS AND METHODS Aorto-caval shunt was created over a 4-week period in adult Sprague-Dawley rats to induce volume-overload heart failure. RESULTS Heart weight and body weight ratio significantly increased after shunting. The left ventricular end-diastolic dimension also significantly increased. Treatment with carvedilol in the shunt group reversed the increase in heart weight and ventricular dimension to the baseline values. Myocardial and skeletal myostatin proteins were up-regulated in the shunt group. The mRNA of myocardial myostatin also increased in the shunt group. Treatment with carvedilol reversed both protein and mRNA of myocardial myostatin to the baseline values. Treatment with N-acetylcysteine and doxazosin partially decreased myostatin mRNA and protein expression as compared with the shunt group. Carvedilol normalized the increased immunohistochemical labelling of myocardial myostatin in the shunt group. CONCLUSION Myocardial myostatin mRNA and protein expression were up-regulated in the rat model of volume-overload heart failure. Treatment with carvedilol is associated with a limitation of increased myostatin expression in the failing ventricular myocardium.
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Affiliation(s)
- K G Shyu
- Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
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Chen HK, Hung HF, Shyu KG, Wang BW, Sheu JR, Liang YJ, Chang CC, Kuan P. Combined cord blood stem cells and gene therapy enhances angiogenesis and improves cardiac performance in mouse after acute myocardial infarction. Eur J Clin Invest 2005; 35:677-86. [PMID: 16269017 DOI: 10.1111/j.1365-2362.2005.01565.x] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Gene and stem cell therapies hold promise for the treatment of ischaemic cardiovascular disease. However, combined stem cell and angiogenic growth factor gene therapy for acute ischaemic myocardium has not been previously reported. This study hypothesized that combined stem cell and gene therapy would not only augment new vessels formation but also improve myocardial function in acute ischaemic myocardium. METHODS Human angiopoietin-1 (Ang1) cDNA and VEGF(165) cDNA were ligated into AAV vector. The purified CD34(+) cells were obtained from human umbilical cord blood samples. Cord blood CD34(+) cells were transduced with AAV vector encoding either the human Ang1 (AAV-Ang1) or VEGF(165) (AAV-VEGF) cDNA alone, or both (AAV-Ang1 plus VEGF). Immediately after ligation of the left anterior descending coronary artery in male SCID mice, culture-expanded CD34(+) cells transduced with AAV-Ang1, AAV-VEGF or AAV-Ang1 plus VEGF were injected intramyocardially at the left anterior free wall. RESULTS Western blot showed that Ang1 and VEGF protein expressions were enhanced in the CD34(+)cells transduced with AAV-Ang1 and AAV-VEGF, respectively. Infarct size significantly decreased and capillary density significantly increased after treatment with CD34(+)/AAV-Ang1 plus VEGF when compared with treatment by CD34(+) only. Combined therapy with CD34(+) and AAV-Ang1, CD34(+) and AAV-VEGF, CD34(+) and AAV-Ang1 plus VEGF, all showed significantly higher cardiac performance in echocardiography than the therapy with CD34(+) alone 4 weeks after myocardial infarction. CONCLUSIONS Combined therapy with human umbilical cord blood CD34(+) cells and both Ang1 and VEGF genes reduced infarct size, attenuated the progression of cardiac dysfunction and increased capillary density in acute myocardial infarction in mice.
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Affiliation(s)
- H K Chen
- Shin Kong Wu Ho-Su Memorial Hospital, Taipei Medical University, Taipei, Taiwan
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Shyu KG, Chang ML, Wang BW, Kuan P, Chang H. Cyclical mechanical stretching increases the expression of vascular endothelial growth factor in rat vascular smooth muscle cells. J Formos Med Assoc 2001; 100:741-7. [PMID: 11802532] [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: 02/23/2023] Open
Abstract
BACKGROUND AND PURPOSE Mechanical forces have profound effects on vascular smooth muscle cells (VSMCs). The mechanism by which mechanical stimuli regulate vascular endothelial growth factor (VEGF) expression and regulation has yet to be elucidated. We investigated the effect of cyclical mechanical stretching on regulation of the VEGF gene in VSMCs. MATERIALS AND METHODS Cultured rat VSMCs grown on a flexible membrane base were stretched by applying a vacuum at 60 cycles/minute. VEGF concentration in the cultured media was determined by enzyme-linked immunoassay. VEGF gene expression was determined by Western blot and Northern blot. The location of VEGF in the VSMC was studied immunohistochemically. Chimeric constructs of the VEGF promoter were deleted and the promoter activity was determined by luciferase activity. RESULTS VEGF concentration increased by 21 to 32% as early as 10 minutes after stretching and remained at this level for up to 12 hours. The concentration of VEGF reached a maximum of 2.8-fold over that in control cells by 2 hours after stretching and declined slightly thereafter. The amount of VEGF mRNA in stretched cells increased as early as 1 hour after stretching, reached a maximum of 3.2-fold over the amount in control cells by 2 hours, and remained at this level for up to 6 hours after stretching. Immunohistochemical study confirmed increased VEGF expression in VSMCs after stretching. Stretched cells transfected with a Sac-Nhe fragment showed only 46% of the luciferase activity of unstretched control cells. However, stretched cells transfected with chimeric plasmids containing a Spe-Nhe fragment showed 2.8-fold luciferase activity over that in control cells. CONCLUSIONS Cyclical mechanical stretching upregulates expression of the VEGF gene in VSMCs at the transcription level. The VEGF 5'-flanking region contains a negative stretch-response element located in the 0.4-kb Sac-Pst fragment and a positive stretch-response element located in the 0.6-kb Spe-Sac fragment.
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Affiliation(s)
- K G Shyu
- Division of Cardiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei
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Wang BW, Wu DH, Lin CK, Huang JS, Mok KT. Superior mesenteric arteriovenous fistula associated with portal obstruction. Zhonghua Yi Xue Za Zhi (Taipei) 2001; 64:586-91. [PMID: 11791946] [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: 02/23/2023]
Abstract
Superior mesenteric arteriovenous fistula is rarely encountered. Unrecognized in early stage, it can cause hazardous sequelae of portal hypertension. Herein we report a rare case of portal obstruction associated with an aneurysmal dilatation of the superior mesenteric vein, which was caused by a superior mesenteric arteriovenous fistula. The patient was a 74-year-old woman admitted for continuous hemetemesis, presenting with a palpable abdominal mass. The computed tomogram revealed a 6.5 cm superior mesenteric venous aneurysm and thrombotic portal venous obstruction. On account of impending shock, an emergent portal venous thrombectomy and portocaval shunt was carried out. Superior mesenteric arterial angiography performed 4 months later confirmed the diagnosis. Being without symptoms, the patient was clinically followed and remained in stable condition for 3 and a half years. The clinical presentation of a mesenteric arteriovenous fistula varies, with occasional gastrointestinal tract hemorrhage. When complicated with portal obstruction, the condition can be disastrous. We believe that creation of a porto-systemic shunt with resection of the arterio-venous fistula is the proper treatment. This patient is now under close observation.
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Affiliation(s)
- B W Wang
- Division of General Surgery, Department of Surgery, Kaohsiung Veterans General Hospital, Taiwan, ROC.
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Mok KT, Wang BW, Chang HC, Lin SL. External biliary drainage plus bile acid feeding is not equal to internal drainage in preserving the cellular immunity following prolonged obstructive jaundice. Dig Dis Sci 2001; 46:1864-70. [PMID: 11575437 DOI: 10.1023/a:1010670711664] [Citation(s) in RCA: 6] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Abstract
This study investigates the importance of intestinal bile flow in cellular immunity. Sprague-Dawley rats undergoing bile duct ligation (BDL) and sham ceiliotomy (Sham) for 14 and 21 days were investigated. Experimental animals following BDL were further divided into an external drainage (ED) group, an ED group with rat chow mixed with 2:2:1 cholic acid, chenodeoxycholic acid, and deoxycholic acid (ED + BF), and an internal drainage (ID) group. Fourteen days later, they were killed and analyzed for spleen lymphocytic [3H] thymidine uptake (LHU) under mitogen stimulation with phytohemagglutinin, blood biochemistry, hemogram, and liver pathology. In the 14-day BDL experiment, LHU and serum albumin level were decreased in the BDL group (P < 0.05). After drainage, they were not significantly different among sham, ED, ED + BF, and ID groups. In the 21-day BDL experiment, the red cell volume was decreased (P < 0.05). After drainage, the ED, ED + BF, and ID groups still had a significantly lower LHU than the sham group (P < 0.05). However, the ID group had higher LHU than the ED and ED + BF groups (P < 0.05). The ED + BF group had a slightly higher LHU than the ED group but not statistically significant. Liver pathology returned to normal after drainage in the 14-day BDL model. In contrast, the 21-day BDL group had prominent periportal necrosis and developed periportal fibrosis after drainage. The present study reveals the duration of BDL determines the severity of hepatic damage. In the 14-day BDL groups, all kinds of drainage completely reverse the impaired liver function and cellular immunity. In the 21-day BDL group, 14-day drainage is inadequate for recovery because irreversible pathological changes are found. The reversal of cellular immunity in ID is better and faster, because it provides a better hepatic functional, nutritional, and hematological recovery besides the presence of primarily secreted bile acids.
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Affiliation(s)
- K T Mok
- Department of Surgery, Veterans General Hospital-Kaohsiung, National Yang-Ming University, Taiwan
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Abstract
OBJECTIVE Total lymphoid irradiation (TLI) has been used to treat rheumatoid arthritis (RA) since the 1970s. This study reviews long-term (15-20-year) mortality outcomes of patients treated with TLI for RA at Stanford University Medical Center and compares these outcomes with those in patients treated with disease-modifying antirheumatic drugs (DMARDs). METHODS Fifty-three patients with RA were treated with full-dose TLI at Stanford University Medical Center. All had failed previous therapy with gold salts and penicillamine. One hundred six control patients were selected from the Arthritis, Rheumatism, and Aging Medical Information Systems database and were matched with the patients for age, sex, disease duration, and mean Health Assessment Questionnaire (HAQ) score. Survival was analyzed using Kaplan-Meier methods and Cox proportional hazards regression. RESULTS No significant difference in age and sex was found between TLI-treated patients and controls. TLI-treated patients had more education (mean 13.4 years versus 11.8 years; P = 0.016) and received more DMARDs prior to TLI (mean 2.1 versus 1.3; P = 0.0001). TLI-treated patients had lower mean HAQ scores at the time of TLI (2.0 versus 2.4; P = 0.0002). TLI had no significant overall effect on survival in treated patients compared with controls (P = 0.62). The survival curves appeared to cross over at approximately 11 years of followup, with better early survival in the TLI group and better late survival in the control group. There was a total of 25 deaths in the TLI group. There were 45 deaths in the control group, with causes of death available for 20 patients. There were 3 patients with lymphoma and 2 with myelodysplastic syndrome in the TLI group, and none in the control group. The most common cause of death in both groups was infection. CONCLUSION TLI had no significant effect on overall survival, with trends toward higher early mortality in controls and trends toward higher late mortality in TLI-treated patients. Overall, there was no difference in mortality, but it appears that there may have been more lymphoproliferative malignancies in the TLI cohort. We would recommend that TLI be used cautiously for patients with refractory RA in whom the benefits outweigh the risks.
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Affiliation(s)
- Z Uhrin
- Stanford University Medical Center, Palo Alto, California 94304, USA
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Shyu KG, Chen CC, Wang BW, Kuan P. Angiotensin II receptor antagonist blocks the expression of connexin43 induced by cyclical mechanical stretch in cultured neonatal rat cardiac myocytes. J Mol Cell Cardiol 2001; 33:691-8. [PMID: 11273722 DOI: 10.1006/jmcc.2000.1333] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mechanical forces have profound effects on cardiomyocytes. To test whether angiotensin II is a potential mediator of stretch-induced effects on gap junctions, we used the angiotensin II (AT1) receptor antagonist, losartan, to investigate the cyclical stretch-induced expression of connexin43 (Cx43), the major cardiac muscle gap junction channel protein. Cultured neonatal rat cardiomyocytes grown on a flexible membrane base were stretched by vacuum to 20% of maximum elongation, at 60 cycles/min. The levels of Cx43 protein began to increase as early as 2 h after stretch was applied, reached a maximum of six-fold over the control by 24 h and remained at this level another 24 h (i.e. up to 48 h after stretch was applied). These increases of Cx43 protein at 24 h were largely (73%) and completely (100%) attenuated (P<0.001) by the addition (30 min before stretch) of 10 n M and 100 n M losartan, respectively. Similarly, the Cx43 mRNA levels in stretched cardiomyocytes rose 89% (P<0.01) above control (non-stretched cells) mRNA levels. This increase also was blocked by losartan. Cyclical stretch increased (and losartan decreased) the immunohistochemical labeling of Cx43 and significantly increased release of angiotensin II into the culture media from 7.5+/-0.6 ng/ml to 23.8+/-1.0 ng/ml (P<0.01) after a 1 h stretch. These findings indicate that cyclical mechanical stretch augments angiotensin II production and Cx43 gene expression in cultured cardiomyocytes, partially through mediation of the AT1 receptors, and suggests interaction between the cardiomyocyte local rennin-angiotensin system and Cx43 in response to stretch.
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Affiliation(s)
- K G Shyu
- The Division of Cardiology, Shin Kong Wu Ho-Su Memorial Hospital, 95 Wen-Chang Rd, Taipei 111, Taiwan
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Abstract
The question of how public funds for research should be allocated has led to participatory priority-setting in prosperous democracies like Taiwan, Republic of China. Useful criteria for research priorities are scientific merit, social benefit and feasibility. Taking a health needs approach and using these criteria, nearly 200 nurses from service and education in a national forum participated in describing research priorities. Through the group method of idea-writing, for clinical nursing, of high priority were assessing quality, care of the elderly, and preventing infectious disease. For nursing education, research addressing advanced role preparation and bridging nursing education and practice were priorities. For nursing management, research of highest priority pertained to economic evaluation, personnel administration, and effectiveness. These suggestions from the deliberation of a committed group of nurses can help shape future national decisions about research funding and training.
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Affiliation(s)
- T J Yin
- Veterans General Hospital and National Yang-Ming University, Taipei, Taiwan, Republic of China
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Zhao DX, Yang XL, Chen L, Wang BW, Xu JL, Zhu HS. [Extraction and separation of antitumor components from Ganoderma lucidum (Leyss. ex Fr.) Karst]. Zhongguo Zhong Yao Za Zhi 2000; 25:288-90. [PMID: 12512451] [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: 02/28/2023]
Abstract
OBJECTIVE To examine the variation of alcohol extraction rates of Ganoderma lucidum spores with different rates of wall-wrack, and analyze the antitumor components of alcohol extract by chromatography. METHOD The G. lucidum spores were soaked and extracted with absolute alcohol. The alcohol extract was chromatographed on a silica gel column and HPLC in proper order, and the antitumor activity of every eluted fraction was represented by its cytotoxicity towards Hela cells. RESULT Extraction rates 5%, 25% and 33% corresponded to wall-wrack rates 0%, 60%-80% and 99% respectively. The alcohol extract from spores with the highest wall-wrack rate was chromatographed on a silica gel column, eluting successfully with CHCl3, EtOAc and CH3OH in order. The CHCl3 fraction had not any antitumor activity, while this activity of CH3OH fraction was 34 times greater than that of EtOAc fraction. HPLC analysis found out that two mixtures(II1 and II3) possess significant antitumor activity in vitro. CONCLUSION The weight of alcohol extract from spores with wall-wrack was far greater than that of spores without. The antitumor components of G. lucidum spores could be analyzed with methanol-water on a reverse HPLC.
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Affiliation(s)
- D X Zhao
- Research Center of Material Sciences, Beijing Institute of Technology, Beijing 100081, China
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Shyu KG, Kuan P, Chang ML, Wang BW, Huang FY. Effects of norepinephrine on apoptosis in rat neonatal cardiomyocytes. J Formos Med Assoc 2000; 99:412-8. [PMID: 10870332] [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: 02/16/2023] Open
Abstract
BACKGROUND AND PURPOSE Norepinephrine (NE) is elevated in heart failure and can induce apoptosis in adult cardiac myocytes. However, it is not known whether NE can induce apoptosis in neonatal cardiac myocytes. This study examined the ability of NE to stimulate apoptosis in rat neonatal cardiac myocytes in vitro. METHODS Neonatal rat cardiac myocytes were exposed to NE alone, NE + propranolol, or NE + prazosin for 24 hours. Apoptosis was assayed by DNA laddering with agarose gel electrophoresis and immunofluorescent terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) staining. Reverse transcription polymerase chain reaction was used to evaluate the expression of Mcl-1. Creatine kinase activity in the cultured medium was used as a measure of the toxicity of NE on myocytes. RESULTS NE increased DNA laddering on agarose gel electrophoresis and increased the number of apoptotic cells in a dose-dependent manner. No increase in apoptosis was found in response to NE doses between 1 and 50 mumol/L. NE at concentrations of 100 to 400 mumol/L increased apoptosis from 10% to 31% of cells. The ability of NE to stimulate apoptosis in rat neonatal cardiac myocytes was completely blocked by propranolol, but not prazosin. NE treatment at high concentrations sharply reduced the level of Mcl-1 mRNA, coincident with the increase in the number of apoptotic cells. Creatine kinase activity in the cultured medium was similar among the controls and NE-treated myocytes. CONCLUSIONS Our results showed that NE at high concentrations stimulated apoptosis in rat neonatal cardiac myocytes in vitro. Apoptosis induced by NE was associated with down-regulation of Mcl-1. However, NE at the same concentration was not toxic to rat neonatal cardiac myocytes.
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Affiliation(s)
- K G Shyu
- Department of Internal Medicine, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan
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Abstract
OBJECTIVE To assess the risk factors that influence mortality from perforated peptic ulcer. DESIGN Retrospective study. SETTING General hospital, Taiwan. SUBJECTS 179 patients who had their perforated peptic ulcers operated on and who had minimum follow-up of one year. MAIN OUTCOME MEASURES Mortality. RESULTS The overall mortality was 15% (26/179). Of the 26 patients who died, the cause of death was uncontrolled systemic infection in 21 (81%), hypovolaemic shock in 2, and fatal arrhythmia and heart failure in 1 each. 15 of the patients who died of sepsis did not have fulminant abdominal sepsis. Most deaths occurred early after operation, (range 1-96 days). Old age, preoperative shock, and type of operation seemed to be related to these deaths on univariate analysis, but multivariate analysis showed that coexisting medical illness, delayed treatment, and low albumin concentration were independent risk factors for mortality. CONCLUSIONS To improve the result of treatment of perforated peptic ulcer, the diagnosis and treatment should not be delayed, the associated medical illnesses should be treated, and nutritional support should be given.
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Affiliation(s)
- N H Chou
- Department of Surgery, Veterans General Hospital-Kaohsiung, National Yang-Ming University, Taiwan ROC
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Chen CM, Chang HT, Mok KT, Liu CI, Tsai CC, Jou NW, Wang BW, Chen IS. Analysis of prognostic factors in Chinese women with breast cancer in southern Taiwan. Zhonghua Yi Xue Za Zhi (Taipei) 1999; 62:717-23. [PMID: 10533302] [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: 04/13/2023]
Abstract
BACKGROUND We conducted a retrospective review of all early-stage breast cancer patients treated at the Veterans General Hospital-Kaohsiung to determine overall and disease-free survival rates, and to evaluate prognostic factors for these outcomes. METHODS During the period of October, 1990, to December, 1997, 332 patients with early-stage breast cancer were treated at our institution. Cox's multivariate regression analysis was used to select prognostic factors significant for overall survival and disease-free survival. RESULTS The survival rate for breast cancer patients was 88.35% at five years. Prognostic factors predicting breast cancer mortality included poorly differentiated histologic grade, four or more lymph nodes positive for metastasis and negative progesterone-receptor status. For disease recurrence, prognostic factors included positive nodes, aneuploidy and poorly differentiated histologic grading. CONCLUSIONS We conclude that a combination of lymph node status, DNA ploidy, histologic grading and progesterone-receptor status help to evaluate the possible outcomes for patients with breast cancer and to plan for optimal therapy.
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Affiliation(s)
- C M Chen
- Department of Surgery, Veterans General Hospital-Kaohsiung, Taiwan, ROC
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Affiliation(s)
- K T Mok
- Department of Surgery, Veterans General Hospital-Kaohsiung, Taiwan, Republic of China
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Wang BW, Mok KT, Chang HT, Liu SI, Chou NH, Tsai CC, Chen IS. APACHE II score: a useful tool for risk assessment and an aid to decision-making in emergency operation for bleeding gastric ulcer. J Am Coll Surg 1998; 187:287-94. [PMID: 9740186 DOI: 10.1016/s1072-7515(98)00158-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Operating for bleeding gastric ulcer remains controversial. Gastric resection bears a higher surgical risk while limited operation may result in more postoperative hemorrhage. There has been little discussion of effective risk assessment of patients. The aim of this study is to define surgical risk by using the APACHE II scoring system, and to determine optimal management. STUDY DESIGN Records from October 1990 to December 1996 were retrospectively reviewed for patients (n=101) with bleeding gastric ulcer who had undergone emergency operation after failed endoscopic therapy. Mortality rates were examined according to different APACHE II scores, and the surgical risk was defined. From January 1997 to December 1997, 35 consecutive patients were enrolled for prospective study. Partial gastric resection (PGR) was performed for patients with huge ulcers (>2 cm) and for low-risk patients with ulcers at the antrum or angularis, while limited operation (oversewing or excision of bleeding ulcer) was reserved for others. The results were compared with the retrospective study. RESULTS In the retrospective study, the mortality rates for the group with a score < 15 and > or = 15 were 5% (3 of 63) and 58% (22 of 38), respectively (p < 0.05). In the group with a score < 15, PGR was performed on 27 patients, and one died. For those patients with a score > or = 15, PGR carried a lower mortality than limited operation, although this was not statistically significant (47% vs 65%). Limited operation resulted in an overall rate of 22% postoperative hemorrhage and 12% reoperation rate, in which all patients with a score > or = 15 died. In the prospective study, the mortality rates in those scoring <15 and > or = 15 were 6% and 50%, respectively. This is not significantly different than the retrospective study. However, the rate of postoperative hemorrhage was diminished (5%). CONCLUSIONS APACHE II score is a useful tool for assessing risk in patients with bleeding gastric ulcer. The mortality is minimal in those with a score <15, and PGR can be performed with low risk. Although high-risk patients have dreadful outcomes, limited operation cannot improve them if postoperative hemorrhage occurs. Decision making in emergency operation for such patients should be based on the ulcer conditions and the patient's hemodynamic status.
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Affiliation(s)
- B W Wang
- Department of Surgery, Veterans General Hospital-Kaohsiung, National Yang-Ming University, Taiwan, ROC
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Mok KT, Wang BW, Chang HT, Liu SI, Jou NW, Tsai CC, Chen IS. Laparoscopic versus open preperitoneal prosthetic herniorrhaphy for recurrent inguinal hernia. Int Surg 1998; 83:174-6. [PMID: 9851340] [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: 02/09/2023] Open
Abstract
BACKGROUND Laparoscopic herniorrhaphy (LH) shares the same repair principle as open preperitoneal prosthetic herniorrhaphy (PPH). Theoretically, the recurrence rate of LH for recurrent inguinal hernia will match the low recurrence rate of PPH (1.2-3%). METHODS One-hundred forty-five cases of recurrent inguinal hernia were retrospectively studied between 1990 and 1994. Forty-two cases receiving LH were compared to 103 cases receiving PPH. RESULTS There were no differences in operative time, hospital stay, morbidity rate, satisfaction scale and recurrence rate between the LH group and the PPH group. The LH group showed significantly less postoperative pain and 2 times shorter convalescence (p<0.01). Unsuspected asymptomatic contralateral hernia was found in 4.8% of patients receiving LH. 11.9% of patients had bilateral hernia repairing at the same time in the LH group. CONCLUSIONS LH is suitable for recurrent inguinal hernia, but further investigation of this technique is required before its wide application.
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Affiliation(s)
- K T Mok
- Department of Surgery, Veterans General Hospital-Kaohsiung, National Yang-Ming University, Taiwan, ROC
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Tarng YW, Shih DF, Liu SI, Wang BW, Mok KT. Cytomegalovirus appendicitis in a patient with acquired immunodeficiency syndrome: a case report. Zhonghua Yi Xue Za Zhi (Taipei) 1997; 60:48-51. [PMID: 9316328] [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: 02/05/2023]
Abstract
Cytomegalovirus (CMV) infection occurs predominantly in immunocompromised hosts. Involvement of the gastrointestinal tract in acquired immunodeficiency syndrome (AIDS) patients is frequent. Nevertheless, CMV appendicitis is exceeding rare. This report describes a patient with AIDS who presented with right lower quadrant abdominal pain, high fever, nausea and vomiting, but without leukocytosis. Diagnosis of CMV appendicitis was confirmed by appendectomy and histopathological examination. Problems related to the diagnosis and therapeutic management of CMV appendicitis in AIDS patients are discussed. The importance of early surgical intervention is emphasized, as is postoperative ganciclovir therapy for treatment of such patients.
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Affiliation(s)
- Y W Tarng
- Department of Surgery, Veterans General Hospital-Kaohsiung, Taiwan, R.O.C
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Wang BW, Chiou YH, Chen WB, Peng TY, Leung HK. Intravenous pretreatment of hypertonic saline can prevent systemic hypotension induced by spinal anesthesia. Acta Anaesthesiol Sin 1997; 35:85-90. [PMID: 9293648] [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: 02/05/2023]
Abstract
BACKGROUND Hypertonic saline improves organ perfusion and patient survival during hemorrhagic shock because it expands plasma volume and increases tissue oxygenation. Its beneficial results have been reported in patients suffering from hypotension during spinal anesthesia. The purpose of this study was to compare the influence between prehydration with 3% hypertonic saline and with isotonic lactated Ringer's solution on the hemodynamic changes and serum electrolyte concentrations in patients undergoing spinal anesthesia. METHODS Sixty ASA class I patients scheduled for herniorrhapy under spinal anesthesia were assigned randomly into two groups. Group 1 = patients were prehydrated with isotonic lactated Ringer's solution at 7 mg/kg (n = 30); Group 2 = patients were given prehydration with 3% hypertonic saline at 7 ml/kg (n = 30). Following prehydration, arterial blood pressure and heart rate were recorded and serum electrolyte concentrations were measured. RESULTS The incidence of hypotension was 17/30 (57%) in the isotonic lactated Ringer's solution group as against 7/30 (23%) in the hypertonic saline group (p < 0.05). There was no significant difference between two groups in relation to the level of anesthesia or maximal heart rate, and electrolyte imbalance did not occur in either group. CONCLUSIONS Prior to spinal anesthesia, hydration with small amount of hypertonic saline is effective to minimize hypotension associated with spinal anesthesia. If so administered it would not increase bodily sodium load and unlike isotonic crystalloid solution it dose not cause accumulation of water in the body on equipollent basis.
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Affiliation(s)
- B W Wang
- Department of Anesthesiology, Taipei Municipal Ho Ping Hospital, Taiwan, R.O.C
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Mok KT, Chang HT, Liu SI, Jou NW, Tsai CC, Wang BW. Surgical treatment of hepatocellular carcinoma with biliary tumor thrombi. Int Surg 1996; 81:284-8. [PMID: 9028991] [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: 02/03/2023] Open
Abstract
Treatment is always abandoned in those HCC with jaundice, because it is usually attributed to the underlying liver cirrhosis and extensive tumor. In this series, 7 cases (0.8%) of HCC with jaundice were caused by bile duct invasion and tumor thrombi (BTT). 57% of cases showed Charcot's triad. 57% of BTT were small HCC, significantly higher than the 1.7% of total cases (p<0.05). The growth pattern of BTT was all spreading type, significantly higher than the 42% of total operation cases (p<0.05). The DNA ploidy of BTT was all aneuploid. 57% of BTT had AFP level higher than 400 IU/ml, but it was 27% in total cases. The prognosis is poor in those treated with palliative tube drainage. Aggressive hepatic resection was proved to be safe and achieved the best results in our limited experience. Choledochotomy to remove tumor thrombi is contraindicated because it easily causes tumor seeding. It is advocated to search BTT for resection from the group of HCC with jaundice.
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Affiliation(s)
- K T Mok
- Department of Surgery, Veterans General Hospital-Kaohsiung, National Yang-Ming University, Taiwan
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Chao WL, Wang BW. In vitro and in situ survivals of bacterial populations added to fresh water environments. Zhonghua Min Guo Wei Sheng Wu Ji Mian Yi Xue Za Zhi 1993; 26:108-15. [PMID: 7982366] [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: 01/28/2023]
Abstract
The fate of Aeromonas hydrophila, Alcaligenes denitrificans, Vibrio cholerae non-01, Pseudomonas putida and four different isolates of Escherichia coli in fresh river water were assessed by using different microcosms (i.e., membrane diffusion chamber and Erlenmeyer flask). When water samples were incubated at 16 +/- 1 degrees C, the differences in extent of survival among test bacteria were in general not significant. If the incubation temperature was raised to 29 +/- 1 degrees C, in the in situ studies, none of the added bacterial population could be detected by Day 3. In the in vitro studies, two of the four E. coli tested remained detectable by Day 3. Similarly, populations of the introduced A. hydrophila, P. putida and A. denitrificans were still detectable by Day 5. In general, all test bacteria survived better under low incubation temperature, regardless of whether the experiments were carried out under in vitro or in situ conditions. The results clearly indicated that when studying the fate of the introduced bacteria in the aquatic environment, in situ study was definitely required, especially in the summer time.
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Affiliation(s)
- W L Chao
- Department of Microbiology, Soochow University, Taipei, Taiwan, Republic of China
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Brecher M, Wang BW, Wong H, Morgan JP. Phencyclidine and violence: clinical and legal issues. J Clin Psychopharmacol 1988; 8:397-401. [PMID: 3069880] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Phencyclidine (PCP) abuse has diminished since PCP's intrusion into American culture in the late 1970s. One of its legacies is the assumption that it provokes violent behavior in humans with predictable regularity. This assumption is so accepted that ingestion of the drug both accidentally and knowingly prior to committing a crime has been used as a defense in criminal trials. We reviewed 81 clinical reports of toxicity in humans published chiefly in North American medical journals. We searched for descriptions of violent behavior in these reports and subjected them to the following questions: (1) Was the violent behavior corroborated or only self-reported? (2) Was the presence of PCP confirmed by analysis of bodily fluids or postmortem tissue? (3) Was the presence of other drugs excluded by similar analysis of bodily fluids? We had planned to examine the reports to see whether clinicians sought evidence of previous violent behavior, but such an inquiry was rarely conducted. Of the hundreds of patients described, only three satisfied these criteria. Further, some of the papers offered evidence that reports of violence were exaggerated. These findings plus the pre-1970 prospective evaluation of thousands of patients with PCP, in which violence was never reported, led us to conclude that clinical and forensic assumptions about PCP and violence are not warranted.
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Affiliation(s)
- M Brecher
- Department of Psychiatry, State University of New York, Brooklyn
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Wang BW, Perng RP, Chien KJ. [Bronchial stump tumor recurrence in resectable primary non-small cell lung Ca]. Zhonghua Yi Xue Za Zhi (Taipei) 1987; 39:419-24. [PMID: 2843267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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