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Chang YF, Cheng YH, Ko YC, Chiou SH, Liu CJL. Anti-apoptotic and autophagic effect: Using conditioned medium from human bone marrow mesenchymal stem cells to treat human trabecular meshwork cells. Regen Ther 2022; 22:50-58. [PMID: 36618489 PMCID: PMC9804247 DOI: 10.1016/j.reth.2022.12.002] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Revised: 11/26/2022] [Accepted: 12/06/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction Glaucoma is a vision-threatening disease associated with accelerated aging of trabecular meshwork (TM) which results in elevated intraocular pressure (IOP). Increased oxidative stress in TM plays an important role in cellular molecular damage which leads to senescence. Autophagy is an intracellular lysosomal degradation process which is activated when cells are under stressful condition, and emerging studies have demonstrated increased expression of modulators of apoptosis and expression of autophagic cascade in ex-vivo TM specimens or cultured TM cells under oxidative stress. Recently, studies have shown neuroprotective and IOP-lowering effects after transplanting mesenchymal stem cells (MSCs) or injecting condition medium (CM) of MSCs into ocular hypertension animal models. However, knowledge of the underlying mechanism accounting for these effects is limited. Using condition medium (CM) from human bone marrow-derived mesenchymal stem cells (BM-MSCs), we investigated the effects of the CM derived from BM-MSCs on TM autophagy and apoptosis. Methods H2O2 was added to culture medium of human TM cells to mimic oxidative damage in glaucomatous eyes, and the autophagic and anti-apoptotic effects of BM-MSCs-derived CM was explored on the oxidatively damaged cells. Mitochondrial ROS production was examined by MitoSOX™, apoptosis was evaluated using terminal deoxynucleotidyl transferase (dUTP) nick end labeling (TUNEL) staining, and the expression of proteins involved in autophagy as well as extracellular matrix was investigated via Western blot. Results There were no significant differences in TM cell viability when the cells were treated with different concentrations of CM in the absence of oxidative stress. Cell viability was significantly higher in oxidatively damaged TM cells treated with 1X or 5X CM compared to untreated TM cells under oxidative stress. The mitochondrial ROS level significantly increased with oxidative stress, which was mitigated in the CM treatment groups. DNA fragmentation significantly decreased in oxidatively stressed TM cells after treatment with CM. LCB3 II/LCB3 I was significantly elevated in the oxidative stress group compared to the control group and was significantly decreased in the CM treatment groups. Expression of fibronectin was not significantly different among the groups. Conclusion The CM derived from human BM-MSCs has the capacity to rescue oxidatively damaged human TM cells associated with decreased autophagy and apoptosis. The BM-MSCs CM has potential for slowing down age- and disease-related degeneration of TM in patients with glaucoma, facilitating success in the control of IOP.
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Affiliation(s)
- Yu-Fan Chang
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan,National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan,Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Yu-Chieh Ko
- National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan,Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shih-Hwa Chiou
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, 112, Taiwan,National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan,Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan,Corresponding author. Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, Department of Medical Research, Taipei Veterans General Hospital, No.201, Sec. 2, Shipai Rd., Beitou District, Taipei, 112, Taiwan, ROC. Fax: +886-2-28757133.
| | - Catherine Jui-Ling Liu
- National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan,Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan,Corresponding author. National Yang Ming Chiao Tung University School of Medicine, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan, ROC, Department of Ophthalmology, Taipei Veterans General Hospital, No.201, Sec. 2, Shipai Rd., Beitou District, Taipei, 112, Taiwan, ROC. Fax: +886-2-28757133.
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Liu B, Zhou WY, Xiao YT, Cheng YH, Ge YH, Nie SD, Lyu P. [Analysis of the diagnosis and treatment of 24 cases of hepatic perivascular epithelioid cell tumor]. Zhonghua Gan Zang Bing Za Zhi 2022; 30:889-894. [PMID: 36207947 DOI: 10.3760/cma.j.cn501113-20201013-00551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Objective: To investigate hepatic perivascular epithelioid cell tumor (PEComa) diagnosis and treatment plan. Methods: 24 cases diagnosed with PEComa clinical manifestations, serum alpha fetoprotein (AFP), carcinoembryonic antigen (CEA), carbohydrate antigen 199 (CA199), imaging findings, surgical methods, postoperative hospital stay, pathological results and prognosis were analyzed retrospectively from September 2015 to September 2020. Results: Majority of patients were females (79.2%), aged 41.5±11.4 years. Tumors were predominantly located in the right liver (50.0%). 76.7% of the cases were mostly clinically asymptomatic. AFP, CEA and CA199 indices were all negative. CT mostly showed low density tumor in the plain scan phase, enhanced in the enhancement phase, and enhanced and weakened in portal venous and equilibrium phase (66.7%). MRI manifestations of most tumors were hypointense on T1WI and hyperintense on T2WI (72.7%). B-ultrasound mostly showed hyperechoic mass in the tumor area with punctate vascular shadow (52.9%). Postoperative hospital stay was 9.0±2.4 days for laparoscopic surgery patients (n=13), 13.4±6.3 days for traditional laparotomy (hereinafter referred to as laparotomy, n=10), and 3 days for 1 patient with microwave ablation. All postoperative pathological results were positive for HMB45 and Melan-A. Follow-up results: 21 cases survived normally, with no tumor recurrence in the recent physical examination; two cases had tumor recurrence and they died two and three years after surgery, and one case was lost to follow-up. Conclusion: Hepatic PEComa more commonly occurs in middle-aged women, with no specific features for tumor markers and clinical manifestations. Some imaging findings are specific, so its features can be combined as a basis for diagnosis. Postoperative pathological examination results can confirm the diagnosis. Therefore, surgery remains the initial treatment plan. Microwave ablation and laparoscopic surgery are recommended as the preferred option because of shorter hospital stays and less trauma than open surgery.
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Affiliation(s)
- B Liu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal Hospital of Hunan Normal University/Hunan Provincial People's Hospital,changsha 410005, China
| | - W Y Zhou
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal Hospital of Hunan Normal University/Hunan Provincial People's Hospital,changsha 410005, China
| | - Y T Xiao
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal Hospital of Hunan Normal University/Hunan Provincial People's Hospital,changsha 410005, China
| | - Y H Cheng
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal Hospital of Hunan Normal University/Hunan Provincial People's Hospital,changsha 410005, China
| | - Y H Ge
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal Hospital of Hunan Normal University/Hunan Provincial People's Hospital,changsha 410005, China
| | - S D Nie
- Clinical trial research Center, The First Affiliated Hospital of Hunan Normal Hospital of Hunan Normal University/Hunan Provincial People's Hospital, changsha 410005, China
| | - P Lyu
- Department of Hepatobiliary Surgery, The First Affiliated Hospital of Hunan Normal Hospital of Hunan Normal University/Hunan Provincial People's Hospital,changsha 410005, China
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Liu B, Xiao YT, Cheng YH, Ge YH, Yao QY, Guo W, Chen S, Yin XM, Cheng W, Lyu P. [Laparoscopic surgery in treatment of perivascular epithelioid cell tumor in liver: safety and efficacy]. Zhonghua Yi Xue Za Zhi 2022; 102:1648-1652. [PMID: 35692016 DOI: 10.3760/cma.j.cn112137-20211124-02622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To evaluate the efficacy and safety of laparoscopic surgery for perivascular epithelioid cell tumor (PEComa). Methods: The clinical data of 42 patients with hepatic PEComa diagnosed by pathology in Hunan Provincial People's Hospital from September 2012 to September 2021 were retrospectively analyzed. The patients were divided into the endoscopic group and the open group according to surgical methods. Statistical software was used to compare the differences in operation time, intraoperative blood loss, postoperative hospital stay, postoperative pathological data and incidence of complications between the two groups. Results: There were 27 cases in the endoscopic group and 15 cases in the open group. In the endoscopic group, there were 5 males and 22 females, aged (40.0±10.4) years. In the open group, there were 5 males and 10 females, aged (44.5±12.6) years. The operative time of the endoscopic group and the open group was (239±156.2) min and (348±103.0) min, and the postoperative hospital stay was (8.2±2.4) d and (13.7±4.9) d, respectively, the endoscopic group was significantly better than the open group, and the difference was statistically significant (P<0.05). There was no significant difference in intraoperative blood loss, tumor benign and malignant, tumor site, tumor diameter, Ki67 index, postoperative complications such as biliary leakage, incision infection and pleural effusion (P>0.05). During the follow-up period of 2-103 months, one case was lost to follow-up, two cases died in the endoscopic group,one case died in the open group. The 5-year overall survival rate (OS) and disease-free survival rate (DFS) were 80.8% and 83.0%, respectively. Meanwhile,. The 5-year OS and DFS were both 92.3%, the difference was not statistically significant (P>0.05). Conclusions: Laparoscopic treatment of hepatic PEComa has the advantages of short operation time and short postoperative hospital stay, and the incidence of complications, 5-year OS and DFS are not significantly different from that of the open group.
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Affiliation(s)
- B Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y T Xiao
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y H Cheng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y H Ge
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - Q Y Yao
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - W Guo
- Department of pathology, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - S Chen
- Department of General Surgery, Zhongshan Hospital of Traditional Chinese Medicine/Zhongshan Hospital Affiliated to Guangzhou University of Traditional Chinese Medicine, Zhongshan 528401, China
| | - X M Yin
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - W Cheng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
| | - P Lyu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University/Hunan Provincial People's Hospital, Changsha 410005, China
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Chang YF, Cheng YH, Ko YC, Chiou SH, Jui-Ling Liu C. Development of topical chitosan/ β-glycerophosphate-based hydrogel loaded with levofloxacin in the treatment of keratitis: An ex-vivo study. Heliyon 2022; 8:e08697. [PMID: 35028471 PMCID: PMC8741500 DOI: 10.1016/j.heliyon.2021.e08697] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 10/18/2021] [Accepted: 12/27/2021] [Indexed: 12/03/2022] Open
Abstract
Staphylococcus species are responsible for most cases of post-operative endophthalmitis. Topical ocular drug was applied for post-operative infection prevention, but the way of delivery encounters many challenges in terms of patient's compliance, drug efficacy, and drug penetration. We used the levofloxacin-loaded chitosan/gelatin/β-glycerophosphate hydrogel sustained releasing system with good in vitro anti-bacterial efficacy and biocompatibility, which we had previously designed, for ex vivo keratitis model to test the preclinical drug efficacy and to determine drug level in the anterior chamber of the eye. The result showed that the ex-vivo corneal keratitis model with S. aureus infection revealed mild opacity over the central cornea with stromal infiltrate, but without obvious stromal infiltration post levofloxacin-loaded hydrogel treatment after 24 h of infection. Quantification of viable bacteria showed a significant anti-bacterial activity. The histological evidence also showed no visible S. aureus after levofloxacin-loaded hydrogel treatment, with a significant anti-inflammatory effect. We also examined the drug concentration in the aqueous humor 24 h after instilling one drop of the levofloxacin-loaded hydrogel. The concentration achieved to a desired drug level. These results suggested that by the ex-vivo model, levofloxacin-loaded hydrogel can be applied for treatment in post-operative endophthalmitis or keratitis after the ophthalmic surgery.
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Affiliation(s)
- Yu-Fan Chang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Yu-Chieh Ko
- National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shih-Hwa Chiou
- Institute of Clinical Medicine, National Yang-Ming University, Taipei 112, Taiwan
- Institute of Clinical Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Catherine Jui-Ling Liu
- National Yang Ming Chiao Tung University School of Medicine, Taipei, Taiwan
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
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Liu B, Cheng YH, Ge YH, He ZL, Chen C, Yang PZ, Chen MF, Zhou LX, Nie SD, Lyu P. [Mucinous adenocarcinoma of the gallbladder: report of 5 cases]. Zhonghua Yi Xue Za Zhi 2021; 101:3506-3508. [PMID: 34775710 DOI: 10.3760/cma.j.cn112137-20210509-01101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The clinical manifestations, laboratory and imaging results, diagnosis and treatment and prognosis of 5 patients with mucinous adenocarcinoma of the gallbladder were analyzed. It was found that the clinical characteristics of mucinous adenocarcinoma of the gallbladder were very similar to that of gallbladder malignant tumor, and it was difficult to differentiate. Ultrasound guided gallbladder needle biopsy can confirm the diagnosis before surgery. Surgery is still the first choice of treatment. Since laparoscopic surgery has obvious advantages over open surgery, it is recommended to be preferentially used. If the tumor is under T2 stage and has no aggressive metastasis, the prognosis is generally good.
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Affiliation(s)
- B Liu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y H Cheng
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - Y H Ge
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - Z L He
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - C Chen
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - P Z Yang
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - M F Chen
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - L X Zhou
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - S D Nie
- Clinical Trial Research Center, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
| | - P Lyu
- Department of Hepatobiliary Surgery, the First Affiliated Hospital of Hunan Normal University, Hunan Provincial People's Hospital, Changsha 410005, China
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Cheng YH, Cheng SJ, Chen HH, Hsu WC. Development of injectable graphene oxide/laponite/gelatin hydrogel containing Wharton's jelly mesenchymal stem cells for treatment of oxidative stress-damaged cardiomyocytes. Colloids Surf B Biointerfaces 2021; 209:112150. [PMID: 34656814 DOI: 10.1016/j.colsurfb.2021.112150] [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: 05/24/2021] [Revised: 09/13/2021] [Accepted: 10/03/2021] [Indexed: 11/08/2022]
Abstract
In the initial stage of myocardial infarction (MI), cardiomyocyte necrosis activates aninflammatory response and increases the reactive oxygen species (ROS) content. Graphene oxide (GO) possesses potential antioxidant properties and can provide the adequate mechanical support for cell growth. The clinical studies showed that direct injection of Wharton's jelly mesenchymal stem cells (WJ-MSCs) into infarcted areas of myocardium can reduce apoptosis and fibrosis. Gelatin is a natural polymer and can promote cell attachment. Nanoclay laponite with shear-thinning properties can be injected and gelled in-situ without chemical triggers. In the study, injectable GO/laponite/gelatin (GO-LG) hydrogel was developed and characterized. The results of cell viability showed that the optimal concentration of GO flasks (200 to 300 nm) to treat cells was 100 μg/ml. Addition of nanosized GO to the laponite/gelatin (LG) hydrogel could increase the mechanical strength and have both hemocompatibility and cytocompatibility. The release of GO from LG hydrogel could inhibit the H2O2-induced oxidative stress. The GO-LG hydrogel containing WJ-MSCs could decrease inflammation and apoptosis level and increase the cell viability of cardiomyocytes under oxidative stress. We believe that utilizing this newly developed GO-LG hydrogel containing WJ-MSCs may have potential applications in the future for treatment of MI.
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Affiliation(s)
- Yung-Hsin Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan.
| | - Shih-Jen Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Hsin-Ho Chen
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
| | - Wei-Chia Hsu
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
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Tsai IL, Tsai CY, Kuo LL, Woung LC, Ku RY, Cheng YH. PLGA nanoparticles containing Lingzhi extracts rescue corneal epithelial cells from oxidative damage. Exp Eye Res 2021; 206:108539. [PMID: 33741324 DOI: 10.1016/j.exer.2021.108539] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 02/24/2021] [Accepted: 03/09/2021] [Indexed: 01/02/2023]
Abstract
Oxidative stress-related ocular surface epithelial damage can be initiated by ambient oxygen, UV radiation, and chemical burns. The oxidative damage to cornea can lead to inflammation and even vision loss. Lingzhi (Ganoderma lucidum) is a Chinese herbal drug and has been shown to prevent chronic diseases in clinical practices and has been proven to possess anti-oxidative and anti-inflammatory properties. In the study, we prepared poly (lactic-co-glycolic acid) (PLGA) nanoparticles (NPs) as a sustained drug release system of Lingzhi (LZH) to improve bioavailability. The particle size of developed NPs containing LZH (LZH-NPs) was ~184 nm with narrow size distribution. The results of cellular uptake revealed that using NPs as a drug delivery system could significantly increases the intracellular retention time. The results of the cell viability and chemiluminescence assay revealed that 5 μg/ml of LZH-NPs might be the threshold concentration for cultivation of corneal epithelial cells. After treating LZH-NPs in oxidative damaged cells, the results showed that the inflammation-related gene expression and DNA fragmentation level were both significantly decreased. Post-treatment of LZH-NPs in damaged corneal epithelial cells could increase the cell survival rate. In the rabbit corneal alkali burn model, topical instillation of LZH-NPs could promote corneal wound healing and decrease the inflammation. These results suggest that LZH-NPs may have the potential to treat ocular surface diseases caused by oxidative stress.
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Affiliation(s)
- I-Lun Tsai
- Department of Ophthalmology, Taipei City Hospital, Taipei, Taiwan; University of Taipei, Taipei, Taiwan.
| | - Ching-Yao Tsai
- Department of Ophthalmology, Taipei City Hospital, Taipei, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Li-Lin Kuo
- Department of Ophthalmology, Taipei City Hospital, Taipei, Taiwan; University of Taipei, Taipei, Taiwan; Department of Health Care Management, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan
| | - Lin-Chung Woung
- Department of Ophthalmology, Taipei City Hospital, Taipei, Taiwan; Department of Health Care Management, National Taipei University of Nursing and Health Sciences, Taipei, Taiwan; Department of Ophthalmology, National Taiwan University Hospital, Taipei, Taiwan
| | - Ruy-Yu Ku
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan.
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Cheng YH, Chang YF, Ko YC, Liu CJL. Development of a dual delivery of levofloxacin and prednisolone acetate via PLGA nanoparticles/ thermosensitive chitosan-based hydrogel for postoperative management: An in-vitro and ex-vivo study. Int J Biol Macromol 2021; 180:365-374. [PMID: 33676980 DOI: 10.1016/j.ijbiomac.2021.03.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 03/02/2021] [Accepted: 03/03/2021] [Indexed: 12/16/2022]
Abstract
Post-operative endophthalmitis (POE) is one of the most dreadful complications after intraocular surgery. For cataract surgery patients, both commercially available topical 0.5% levofloxacin and 1% prednisolone acetate (PA) ophthalmic solution require at least 3 to 4 times application daily. In this study, we develop a dual drug delivery system composed of the thermosensitive chitosan/gelatin-based hydrogel containing PA and levofloxacin-loaded nanoparticles (LNPs). LNPs with negative surface charge show the monodisperse (polydispersity index ~0.045), nanosize (~154.7 nm) and sphere-like structure. The optimal concentration of LNPs and PA to corneal epithelial cells was 5 μg/mL and 50 μg/mL, respectively. The developed dual drug delivery system (PAgel-LNPs) could gel at 34 °C within 63 s. The osmolarity of PAgel-LNPs was 301.2 ± 1.5 mOsm/L. PAgel-LNPs showed a sustained-release profile for 7 days. Post-treatment of PAgel-LNPs in TNF-α-damaged corneal epithelial cells could decrease the inflammation (inflammatory genes (TNF-α, IL-6, MMP-3 andMMP-9) and IL-6 production) and cell death. In ex-vivo rabbit model of S. aureus keratitis, the anti-inflammation and anti-bacterial property have been demonstrated. These results suggest that thermosensitive PAgel-LNPs may have the potential to use for the prevention of POE.
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Affiliation(s)
- Yung-Hsin Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan.
| | - Yu-Fan Chang
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan; National Yang-Ming University School of Medicine, Faculty of Medicine, Taipei, Taiwan
| | - Yu-Chieh Ko
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan; National Yang-Ming University School of Medicine, Faculty of Medicine, Taipei, Taiwan
| | - Catherine Jui-Ling Liu
- Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan; National Yang-Ming University School of Medicine, Faculty of Medicine, Taipei, Taiwan.
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Chang KT, Lin YL, Lin CT, Hong CJ, Cheng YH, Tsai MJ, Huang WC, Shih YH, Lee YY, Cheng H, Huang MC. Neuroprotection in the Acute Stage Enables Functional Recovery Following Repair of Chronic Cervical Root Transection After a 3-Week Delay. Neurosurgery 2021; 87:823-832. [PMID: 31960049 DOI: 10.1093/neuros/nyz572] [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: 04/22/2019] [Accepted: 12/01/2019] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Preganglionic cervical root transection (PCRT) is the most severe type of brachial plexus injury. In some cases, surgical procedures must be postponed for ≥3 wk until electromyographic confirmation. However, research works have previously shown that treating PCRT after a 3-wk delay fails to result in functional recovery. OBJECTIVE To assess whether the immunosuppressive drug sirolimus, by promoting neuroprotection in the acute phase of PCRT, could enable functional recovery in cases of delayed repair. METHODS First, rats received a left 6th to 8th cervical root transection, after which half were administered sirolimus for 1 wk. Markers of microglia, astrocytes, neurons, and autophagy were assessed at days 7 and 21. Second, animals with the same injury received nerve grafts, along with acidic fibroblast growth factor and fibrin glue, 3 wk postinjury. Sirolimus was administered to half of them for the first week. Mechanical sensation, grasping power, spinal cord morphology, functional neuron survival, nerve fiber regeneration, and somatosensory-evoked potentials (SSEPs) were assessed 1 and 23 wk postinjury. RESULTS Sirolimus was shown to attenuate microglial and astrocytic proliferation and enhance neuronal autophagy and survival; only rats treated with sirolimus underwent significant sensory and motor function recovery. In addition, rats who achieved functional recovery were shown to have abundant nerve fibers and neurons in the dorsal root entry zone, dorsal root ganglion, and ventral horn, as well as to have SSEPs reappearance. CONCLUSION Sirolimus-induced neuroprotection in the acute stage of PCRT enables functional recovery, even if surgical repair is performed after a 3-wk delay.
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Affiliation(s)
- Kai-Ting Chang
- Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Applied Chemistry, Chaoyang University of Technology, Wufeng, Taiwan
| | - Yi-Lo Lin
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Chi-Te Lin
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Nursing, Central Taiwan University of Science and Technology, Taichung, Taiwan
| | - Chen-Jei Hong
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yung-Hsin Cheng
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - May-Jywan Tsai
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Wen-Cheng Huang
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Medicine, National Yang-Ming University, Taipei, Taiwan.,Center for Neural Regeneration, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yang-Hsin Shih
- Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Central Clinic Hospital, Taipei, Taiwan
| | - Yi-Yen Lee
- Graduate Institute of Veterinary Pathobiology, College of Veterinary Medicine, National Chung Hsing University, Taichung, Taiwan
| | - Henrich Cheng
- Institute of Pharmacology, School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Medicine, National Yang-Ming University, Taipei, Taiwan.,Center for Neural Regeneration, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ming-Chao Huang
- Neural Regeneration Laboratory, Department of Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Central Clinic Hospital, Taipei, Taiwan.,Division of Pediatric Neurosurgery, Neurological Institute, Taipei Veterans General Hospital, Taipei, Taiwan.,Basic Medical Education Center, Central Taiwan University of Science and Technology, Taichung, Taiwan.,School of Medicine, Taipei Medical University, Taipei, Taiwan.,Faculty of Medicine, National Yang-Ming University, Taipei, Taiwan
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10
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Lu B, Li JY, Sun MJ, Chen B, Chen P, Cheng YH, Huang JF. [The malignant phenotype of calcineurin B homologous protein 2 in gastric cancer and its clinical significance]. Zhonghua Yi Xue Za Zhi 2020; 100:3694-3701. [PMID: 33342147 DOI: 10.3760/cma.j.cn112137-20200421-01252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the expression and clinical significance of calcineurin B homologous protein 2 (CHP2) in gastric cancer (GC) and its effect on malignant phenotype of GC cells. Methods: The protein expression of CHP2 in 297 GC tissue and 198 normal gastric tissue samples were detected by immunohistochemistry. The relationship between the expression of CHP2 and clinicopathologic parameters of GC were analyzed. CHP2-overexpression plasmids and CHP2-interference plasmids were transfected into GC cell lines respectively. Wound healing assay and Transwell experiment was used to detect the invasion and migration ability of GC cells, and cell counting kit-8 (CCK-8) method was used to detect the proliferation ability of GC cells. Results: The positive expression rate of CHP2 in GC was 68.7% (204/297), which was higher in benign margin (34.1%) (31/91), chronic gastritis (59.1%) (13/22), intestinal metaplasia (34.2%) (13/38), low-grade intraepithelial neoplasia (40.0%) (12/30) and high-grade intraepithelial neoplasia (41.2%)(7/17). The positive expression of CHP2 was correlated with tumor, node and metastasis (TNM) stage, lymph node metastasis and distant metastasis (all P<0.05), but not with gender, age, Laurén classification, human epidermal growth factor receptor 2 (HER2) levels, depth of invasion, carcinoembryonic antigen (CEA) level and CEA 19-9 level (all P>0.05). The results of multivariate analysis showed that high expression of CHP2 and TNM stage were both independent parameters for predicting GC patient prognosis (both P<0.05). Interference of CHP2 expression in HGC-27 cells suppressed proliferation and migration significantly (P<0.05). However, over-expression CHP2 in AGS cells promoted proliferation, and migration significantly (P<0.05). Conclusion: CHP2 plays an important role in the development of GC, which is expected to be a molecular marker for patient prognosis and a potential target of targeted therapy for GC patients.
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Affiliation(s)
- B Lu
- Department of Clinical Biobank, Affiliated Hospital of Nantong University, Institute of Oncology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - J Y Li
- Department of Clinical Biobank, Affiliated Hospital of Nantong University, Institute of Oncology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - M J Sun
- Department of Clinical Biobank, Affiliated Hospital of Nantong University, Institute of Oncology, Affiliated Hospital of Nantong University, Nantong 226001, China
| | - B Chen
- Medical School of Nantong University, Nantong, 226001, China
| | - P Chen
- Medical School of Nantong University, Nantong, 226001, China
| | - Y H Cheng
- Medical School of Nantong University, Nantong, 226001, China
| | - J F Huang
- Department of Clinical Biobank, Affiliated Hospital of Nantong University, Institute of Oncology, Affiliated Hospital of Nantong University, Nantong 226001, China
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11
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Wang CY, Hsiao CY, Tsai KL, Cheng YH. Injectable thermosensitive chitosan-based hydrogel containing ferulic acid for treating peripheral arterial disease. J Tissue Eng Regen Med 2020; 14:1438-1448. [PMID: 32767844 DOI: 10.1002/term.3109] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 07/16/2020] [Accepted: 07/25/2020] [Indexed: 12/20/2022]
Abstract
Peripheral arterial disease (PAD) affects more than 200 million people worldwide. Recent studies suggest that oxidative stress-related inflammation can lead to the initiation and progression of PAD. Ferulic acid (FA) is a natural phenolic compound and has been proven to have antioxidant and angiogenesis effects. In this study, thermosensitive chitosan-gelatin-based hydrogel was used as a delivery vehicle of FA. The effects of hydrogel encapsulating FA (FA-gel) have been demonstrated in vitro and in vivo. The results revealed that the developed hydrogel with porous structure could provide a sustained release of FA. Post-treatment of FA-gel effectively decreased the oxidative stress-induced damage in human umbilical vein endothelial cells via decreasing endogenous reactive oxygen species production, inflammation-related gene expression and apoptosis level. In the mouse hindlimb ischemia model, the results revealed that FA-gel could improve blood flow, muscle regeneration and decreases inflammation in veins. These results suggested that FA-gel may have a therapeutic potential in PAD.
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Affiliation(s)
- Chien-Ying Wang
- Emergency Department, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Critical Care Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Department of Pharmacy & Graduate Institute of Pharmaceutical Technology, Tajen University, Pingtung, Taiwan
- School of Medicine, National Yang-Ming University, Taipei, Taiwan
| | | | - Kun-Ling Tsai
- Department of Physical Therapy, National Cheng Kung University, Tainan, Taiwan
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, Taiwan
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12
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Li JW, Cheng YH, Lee HT, Tsen WC, Chiu CW, Suen MC. Properties and degradation of castor oil-based fluoridated biopolyurethanes with different lengths of fluorinated segments. RSC Adv 2019; 9:31133-31149. [PMID: 35529409 PMCID: PMC9072421 DOI: 10.1039/c9ra04654b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [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: 06/21/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022] Open
Abstract
To develop a durable, biodegradable polymer, this study successfully synthesized a castor-oil-based prepolymer by using methylene diphenyl diisocyanate as a hard segment, polycaprolactone as a soft segment, and castor oil as a functional monomer. We added perfluorinated alkyl segments with varying chain lengths into the castor-oil-based polymer to synthesize castor-oil-based fluoridated biopolyurethanes (FCOPUs) with different fluorinated segment lengths. The castor-oil-based polyurethanes with different fluorinated segment lengths had similar molecular weights, which enabled accurate analysis of the effect of the lengths of fluorinated segments on FCOPUs. Nuclear magnetic resonance (NMR) was used to perform 1H NMR, 19F NMR, 19F–19F COSY, 1H–19F COSY, and HMBC analyses on the FCOPU structures. The results of Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy curve fitting verified the interaction between C–F⋯H–N and C–F⋯C
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O. This interaction increased as the fluorinated segments became longer. Regarding the thermal properties of the FCOPUs, the thermogravimetric analysis, differential scanning calorimetry, and dynamic mechanical analysis results revealed that long fluorinated segments were associated with increased thermal stability in the FCOPUs. The atomic force microscopy and tensile strength test suggested that long fluorinated segments contained in the FCOPUs increased the degree of phase separation and tensile strength in FCOPUs. Finally, we dipped the FCOPUs in a 3 wt% NaOH solution, calculated the weight loss of the FCOPUs, and observed their surface structure by using scanning electron microscopy. To develop a durable, biodegradable polymer, this study successfully synthesized a castor-oil-based prepolymer by using methylene diphenyl diisocyanate as a hard segment, polycaprolactone as a soft segment, and castor oil as a functional monomer.![]()
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Affiliation(s)
- Jia-Wun Li
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- ROC
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- ROC
| | - Hsun-Tsing Lee
- Department of Materials Science and Engineering
- Vanung University
- Taoyuan
- ROC
| | - Wen-Chin Tsen
- Department of Fashion and Design
- Lee-Ming Institute of Technology
- New Taipei City
- ROC
| | - Chih-Wei Chiu
- Department of Materials Science and Engineering
- National Taiwan University of Science and Technology
- Taipei
- ROC
| | - Maw-Cherng Suen
- Department of Fashion Business Administration
- Lee-Ming Institute of Technology
- New Taipei City
- ROC
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13
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Chen YJ, Wang YX, Luo Y, Cheng YH, Cao WC, Lu WQ. [Exposure to disinfection by-products during gestation and newborns' small for gestational age]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:885-891. [PMID: 30196633 DOI: 10.3760/cma.j.issn.0253-9624.2018.09.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To explore the associations between exposure to chlorination disinfection by-products (CDBPs) during gestation and newborns' small for gestational age (SGA). Methods: During April 2010 to July 2012, a total of 3 903 pregnant women who lived in a district with the same water treatment plant in Wuhan, China were recruited to this perspective study. Information about demographic characteristics of pregnant women and their newborns was collected. The tap water samples were monthly collected for 28 months in 3 different sites, with 84 samples, and 4 kinds of trihalomethanes (THMs)(chloroform (TCM), bromodichloromethane (BDCM), dibromochloromethane (DBCM), and bromoform (TBM)) and 2 kinds of chlorohaloacetic acids (HAAs) (trichloroacetic acid (TCAA), dichloroacetic acid (DCAA)) were determined. The pregnant women were divided into 4 groups(Q1 to Q4) by quartile method according to their exposure level of CDBPs. Binary Logistic regression models were used to assess the associations between exposure to CDBPs during gestation and newborns' small for gestational age. Results: The average weight of all the newborns was (3 310.19±389.91) g, of which 169 (4.33%) were SGA. The median concentrations of TCM, BDCM, bromo-THMs, total THMs, TCAA, and DCAA during the whole pregnancy were 18.07, 4.93, 8.51, 26.74, 10.65, and 13.77 μg/L, respectively. Binary Logistic regression analysis showed dose-response relationships between elevated TCM and total THMs during the whole gestation and compared with Q1 group, while there was a increased risk of SGA in Q4 group, and OR(95%CI) was 1.87 (1.01-3.49) , 2.30 (1.22-4.35) , respectively (P for trend equaled to 0.044, 0.015). Compare with Q1 group, there also be positive associations between exposure to TCAA (Q4 group) during first-trimester and the whole gestation and SGA, while OR(95%CI) was 2.16 (1.19-3.91) (P for trend equaled to 0.015). Conclusion: Exposure to CDBPs during gestation might increase the risk of newborns' SGA.
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Affiliation(s)
- Y J Chen
- Department of Occupational and Environmental Health and Key Laboratory of Environment and Health, Ministry of Education & Ministry of Environmental Protection, and State Key Laboratory of Environmental Health (incubating), School of Public Health, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, China
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14
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Han JC, Chen GH, Zhang JL, Wang JG, Qu HX, Yan YF, Yang XJ, Cheng YH. Relative biological value of 1α-hydroxycholecalciferol to 25-hydroxycholecalciferol in broiler chicken diets. Poult Sci 2018; 96:2330-2335. [PMID: 28339866 DOI: 10.3382/ps/pex031] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 01/20/2017] [Indexed: 11/20/2022] Open
Abstract
This study was conducted to evaluate the relative biological value (RBV) of 1α-hydroxycholecalciferol (1α-OH-D3) to 25-hydroxycholecalciferol (25-OH-D3) in one- to 21-day-old broiler chickens fed calcium (Ca)- and phosphorus (P)-deficient diets. On the d of hatch, 450 male Ross 308 broiler chickens were weighed and randomly allotted to 9 treatments with 5 replicates of 10 birds per replicate. The basal diet contained 0.50% Ca and 0.25% non-phytate phosphorus (NPP) but was not supplemented with cholecalciferol (vitamin D3). The levels of Ca and NPP in basal diets were lower than those recommended by NRC (1994). 25-OH-D3 was fed at zero, 1.25, 2.5, 5.0, and 10.0 μg/kg, and 1α-OH-D3 was fed at 0.625, 1.25, 2.5, and 5.0 μg/kg. The RBV of 1α-OH-D3 to 25-OH-D3 based on vitamin D intake was determined by the slope ratio method. Results showed that 25-OH-D3 or 1α-OH-D3 improved the growth performance and decreased the mortality in one- to 21-day-old broilers. A linear relationship was observed between the level of 25-OH-D3 or 1α-OH-D3 and mineralization of the femur, tibia, or metatarsus. The RBV of 1α-OH-D3 to 25-OH-D3 were 234, 253, and 202% when the weight, ash weight, and Ca percentage of femur were used as criteria. The corresponding RBV of 1α-OH-D3 to 25-OH-D3 were 232 to 263% and 245 to 267%, respectively, when tibia and metatarsus mineralization were used as criteria. These data indicate that when directly feeding a hormonally active form of vitamin D as 1α-OH-D3 proportionally less is needed than when using the precursor (25-OH-D3) in diets deficient in Ca and P.
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Affiliation(s)
- J C Han
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, China
| | - G H Chen
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, China.,College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou, China
| | - J L Zhang
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, China.,College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou, China
| | - J G Wang
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, China.,College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou, China
| | - H X Qu
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, China
| | - Y F Yan
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, China
| | - X J Yang
- College of Animal Science and Technology, Northwest A&F University, Yangling, China
| | - Y H Cheng
- Department of Biotechnology and Animal Science, National Ilan University, Taiwan
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15
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Tsai KL, Hung CH, Chan SH, Hsieh PL, Ou HC, Cheng YH, Chu PM. Chlorogenic Acid Protects Against oxLDL-Induced Oxidative Damage and Mitochondrial Dysfunction by Modulating SIRT1 in Endothelial Cells. Mol Nutr Food Res 2018; 62:e1700928. [DOI: 10.1002/mnfr.201700928] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 02/05/2018] [Indexed: 12/28/2022]
Affiliation(s)
- Kun-Ling Tsai
- Department of Physical Therapy; National Cheng Kung University, College of Medicine; 701 Tainan Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy; National Cheng Kung University, College of Medicine; 701 Tainan Taiwan
- Institute of Allied Health Sciences; College of Medicine; National Cheng Kung University; 701 Tainan Taiwan
| | - Shih-Hung Chan
- Department of Internal Medicine; College of Medicine and Hospital; National Cheng Kung University; 701 Tainan Taiwan
| | - Pei-Ling Hsieh
- Institute of Oral Sciences; Chung Shan Medical University; 402 Taichung Taiwan
| | - Hsiu-Chung Ou
- Department of Occupational Therapy; College of Medical and Health Science; Asia University; 413 Taichung Taiwan
| | - Yung-Hsin Cheng
- Department of Materials Science and Engineering; National Taiwan University of Science and Technology; 106 Taipei Taiwan
| | - Pei-Ming Chu
- Department of Anatomy; School of Medicine; China Medical University; 404 Taichung Taiwan
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16
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Zhang YJ, Cheng YH, Guo LX, Wang NQ, Liu H. [Expression of succinate dehydrogenase subunit protein in succinate dehydrogenase-deficient gastrointestinal stromal tumors]. Zhonghua Bing Li Xue Za Zhi 2018; 47:252-257. [PMID: 29690663 DOI: 10.3760/cma.j.issn.0529-5807.2018.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the expression of succinate dehydrogenase complex subunit protein in succinate dehydrogenase-deficient gastrointestinal stromal tumors (SDH-deficient GISTs). Methods: Three hundred fifty-two cases of GISTs were collected from January 2003 to January 2017 at the Affiliated Hospital of Guizhou Medical University and West China Hospital of Sichuan University.The expression of succinate dehydrogenase subunit protein was detected by immunohistochemical EnVision technique in 352 cases of GISTs, and the negative cases were analyzed for clinicopathologic features and outcome. The gene segments of CKIT exons 9, 11, 13 and 17 and PDGFRA exons 12 and 18 were amplified and detected in SDH-deficient (negative) cases. Results: A total of 15 SDHB-deficient (negative) GISTs (4.3%, 15/352) were found among 352 cases of GISTs. Six patients were male and nine were female. The age of initial diagnosis ranged from 15 to 84 years (median=53 years, mean=47 years). The tumor involved stomach (14 cases) and mesentery (1 case). The tumor sizes varied from 0.5 cm to 15.0 cm (mean=6.9 cm). There were six, six and three cases of epithelioid, mixed and spindle cell types respectively. Eight cases showed multi-nodularity in the wall of stomach. Metastasis to lymph node was noted in four cases, one case showed intraperitoneal implantation metastasis. Metastases to liver, pancreas and lymph node were found in one case, and one case showed vascular invasion. Among SDHB-deficient GISTs, two SDHA-deficient (negative) cases were found (0.6%, 2/352), but there were no SDHC and SDHD deficient (negative) cases. Five of the fifteen SDH-deficient GISTs had follow-up data: one patient died 8 months after surgery from unknown cause, four had no recurrences or metastases, and there was no history of paraganglioma and pulmonary chondroma found in patients and their families. No mutation in CKIT and PDGFRA gene was identified in 15 cases of SDH-deficient GISTs. Conclusion: SDH-deficient GISTs have unique clinicopathologic features and a favorable prognosis, and a small proportion of cases are SDHA-deficient.
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Affiliation(s)
- Y J Zhang
- Department of Pathology, Guizhou Medical University and the Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
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17
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Yeh SW, Cheng YH, Nan FN, Wen CM. Characterization and virus susceptibility of a continuous cell line derived from the brain of Aequidens rivulatus (Günther). J Fish Dis 2018; 41:635-641. [PMID: 29399816 DOI: 10.1111/jfd.12763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [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: 09/07/2017] [Revised: 11/10/2017] [Accepted: 11/10/2017] [Indexed: 06/07/2023]
Abstract
Cell cultures derived from the brain tissues of Aequidens rivulatus (Günther) have been characterized previously. In this study, a continuous cell line ARB8 was further established, and its growth characteristics, transcription and susceptibility to fish viruses-including chum salmon reovirus (CSV), marbled eel infectious pancreative necrosis virus (MEIPNV), grouper nervous necrosis virus (GNNV), giant seaperch iridovirus (GSIV), red seabream iridovirus (RSIV), koi herpesvirus (KHV), herpesvirus anguilla (HVA) and marbled eel polyoma-like virus (MEPyV)-were examined. ARB8 cells that showed epithelioid morphology and were passaged >80 times grew well at temperatures ranging from 25°C to 30°C in L-15 medium containing 5%-15% foetal bovine serum. The cells constitutively transcribed connexion 43, glutamine synthetase, nestin and nkx6-2, which are markers for neural progenitor cells. The cells were highly susceptible to CSV, MEIPNV, GSIV and RSIV and showed the typical cytopathic effect (CPE). However, the cells were resistant to GNNV, KHV, HVA and MEPyV because no significant CPE was noted after infection. Optimal temperatures for virus production ranged from 25°C to 30°C. The results revealed that the neural progenitor cell line ARB8 can potentially serve as a useful tool for investigating fish viruses and isolating new viruses in ornamental cichlid fishes.
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Affiliation(s)
- S W Yeh
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung, Taiwan
| | - Y H Cheng
- Department of Biotechnology and Animal Science, National Ilan University, Ilan, Taiwan
| | - F N Nan
- Department of Aquaculture, National Taiwan Ocean University, Keelung, Taiwan
| | - C M Wen
- Department of Life Sciences, National University of Kaohsiung, Kaohsiung, Taiwan
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18
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Chan SH, Hung CH, Shih JY, Chu PM, Cheng YH, Lin HC, Hsieh PL, Tsai KL. Exercise intervention attenuates hyperhomocysteinemia-induced aortic endothelial oxidative injury by regulating SIRT1 through mitigating NADPH oxidase/LOX-1 signaling. Redox Biol 2018; 14:116-125. [PMID: 28888894 PMCID: PMC5596261 DOI: 10.1016/j.redox.2017.08.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [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: 07/28/2017] [Revised: 08/18/2017] [Accepted: 08/23/2017] [Indexed: 11/30/2022] Open
Abstract
Coronary artery disease (CAD) is a critical cardiovascular disease and a cause of high morbidity and mortality in this world. Hyperhomocysteinemia (HHcy) has been suggested as a risk factor for CAD. In addition, SIRT1 (sirtuin 1) has been reported to play a protective role in a variety of diseases, especially in the cardiovascular system. The main purpose of this study was to investigate the effects of exercise training on apoptosis and inflammation in HHcy animals. We also tested whether exercise protected against Hhcy-induced dysfunction of endothelium through modulation of SIRT1. C57BL mice (8 in each group) were fed with or without 1% L-methionine (w/w) in water for 4 months to induce HHcy. We found that Hhcy repressed SIRT1 and AMPK expression and increased NADPH oxidase activity. Plasma MDA, endothelium LOX-1 and p-p38 were up-regulated by Hhcy induction. NF-κB and it downstream molecules were activated under Hhcy situation, thereby promoting pro-inflammatory responses. Moreover, we also reported that Hhcy caused endothelium apoptosis involving Akt inhibition and mitochondria-dependent apoptotic pathways. Exercise training significantly protected against endothelium from Hhcy caused oxidative injuries. In addition, EX527 (SIRT1 inhibitor) reduced the therapeutic effects by exercise. Our results had indicated that exercise training prevent the development of atherosclerosis through SIRT1 activation and oxidative stress inhibition under Hhcy situation.
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Affiliation(s)
- Shih-Hung Chan
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jhih-Yuan Shih
- Department of Internal Medicine, Chi-Mei Hospital, Tainan, Taiwan
| | - Pei-Ming Chu
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
| | - Yung-Hsin Cheng
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
| | - Huei-Chen Lin
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Physical Therapy, Shu-Zen Junior College of Medicine and Management, Taiwan
| | - Pei-Ling Hsieh
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan
| | - Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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19
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Tsai KL, Kao CL, Hung CH, Cheng YH, Lin HC, Chu PM. Chicoric acid is a potent anti-atherosclerotic ingredient by anti-oxidant action and anti-inflammation capacity. Oncotarget 2018; 8:29600-29612. [PMID: 28410194 PMCID: PMC5444689 DOI: 10.18632/oncotarget.16768] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [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: 01/25/2016] [Accepted: 03/04/2017] [Indexed: 11/25/2022] Open
Abstract
Atherosclerotic cardiovascular disease is linked to both oxidative stress and endothelial cell dysfunction. Chicoric acid has antioxidant and anti-inflammatory properties. In the present investigation, we demonstrated that chicoric acid inhibits oxidized low-density lipoprotein (oxLDL)-facilitated dysfunction in human umbilical vein endothelial cells (HUVECs). Oxidative injuries were tested by investigating the formation of intracellular reactive oxygen species (ROS) and by examining the activity of antioxidant enzymes and the function of endothelial nitric oxide synthase (eNOS). We also confirmed that chicoric acid mitigates apoptotic features caused by oxLDL, such as the subsequent break down of mitochondrial transmembrane potential and the activation of Bax, which promote DNA strand breaks and activate caspase-3. Moreover, our data revealed that chicoric acid attenuated the oxLDL activation of NF-κB, the attachment of THP-1 cells and the overexpression of adhesion molecules in human endothelial cells. The results of this study suggest a potential molecular mechanism through which chicoric acid inhibits oxLDL-induced human endothelial dysfunction.
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Affiliation(s)
- Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chung-Lan Kao
- Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Yung-Hsin Cheng
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
| | - Huei-Chen Lin
- Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei, Taiwan.,Department of Physical Therapy, Shu-Zen Junior College Of Medicine And Management, Kaohsiung, Taiwan
| | - Pei-Ming Chu
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
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20
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Chan SH, Hung CH, Shih JY, Chu PM, Cheng YH, Tsai YJ, Lin HC, Tsai KL. Baicalein is an available anti-atherosclerotic compound through modulation of nitric oxide-related mechanism under oxLDL exposure. Oncotarget 2018; 7:42881-42891. [PMID: 27356749 PMCID: PMC5189994 DOI: 10.18632/oncotarget.10263] [Citation(s) in RCA: 12] [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: 04/25/2016] [Accepted: 06/13/2016] [Indexed: 01/25/2023] Open
Abstract
OxLDL facilitate reactive oxygen species (ROS) formation and up-regulation of the executioner caspase-3 via the mitochondrial apoptotic pathway involves several critical steps in human endothelial cells. Previous studies reported that oxLDL-facilitated endothelial oxidative stress is associated with impairment of eNOS and up-regulation of inducible nitric oxide synthase (iNOS). Baicalein is the most abundant component that has anti-HIV, anti-tumor, anti-oxidant and free radical scavenging functions. In this present study, we shown that baicalein hinibits oxLDL-caused endothelial dysfunction through suppression of endothelial inflammation and oxidative stress that causes to cellular apoptosis. Specifically, baicalein reduces the elevation of ROS concentration, which subsequently inhibits the oxLDL-decreased expression of anti-oxidant enzymes, enriches the bioavailability of NO, stabilizes the mitochondrial membrane, thereby inhibiting the discharge of cytochrome c from mitochondria, a molecule required for the activation of the pro-apoptotic protein caspase 3. However, inhibition of eNOS impairs the anti-apoptotic and anti-inflammatory effects of baicalein. These results provide new insight into the possible molecular mechanisms by which baicalein protects against atherogenesis by NO-related pathways.
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Affiliation(s)
- Shih-Hung Chan
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Hsia Hung
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jhih-Yuan Shih
- Department of Internal Medicine, Chi-Mei Hospital, Tainan, Taiwan
| | - Pei-Ming Chu
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
| | - Yung-Hsin Cheng
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
| | - Yi-Ju Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Huei-Chen Lin
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan.,Department of Physical Therapy, Shu-Zen Junior College Of Medicine and Management, Kaohsiung, Taiwan
| | - Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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21
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Chan SH, Hung CH, Shih JY, Chu PM, Cheng YH, Lin HC, Tsai KL. SIRT1 inhibition causes oxidative stress and inflammation in patients with coronary artery disease. Redox Biol 2017; 13:301-309. [PMID: 28601780 PMCID: PMC5466584 DOI: 10.1016/j.redox.2017.05.027] [Citation(s) in RCA: 61] [Impact Index Per Article: 8.7] [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: 05/21/2017] [Accepted: 05/31/2017] [Indexed: 01/22/2023] Open
Abstract
Coronary artery disease (CAD) is the primary critical cardiovascular event. Endothelial cell and monocyte dysfunction with subsequent extravagant inflammation are the main causes of vessel damage in CAD. Thus, strategies that repress cell death and manage unsuitable pro-inflammatory responses in CAD are potential therapeutic strategies for improving the clinical prognosis of patients with CAD. SIRT1 (Sirtuin 1) plays an important role in regulating cellular physiological processes. SIRT1 is also thought to protect the cardiovascular system by means of its antioxidant, anti-inflammation and anti-apoptosis activities. In the present study, we found that the SIRT1 expression levels were repressed and the acetylated p53 expression levels were enhanced in the monocytes of patients with CAD. LOX-1/oxidative stress was also up-regulated in the monocytes of patients with CAD, thereby increasing pro-apoptotic events and pro-inflammatory responses. We also demonstrated that monocytes from CAD patients caused endothelial adhesion molecule activation and the adherence of monocytes and endothelial cells. Our findings may explain why CAD patients remain at an increased risk of long-term recurrent ischemic events and provide new knowledge regarding the management of clinical CAD patients.
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Affiliation(s)
- Shih-Hung Chan
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Ching-Hsia Hung
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Jhih-Yuan Shih
- Department of Internal Medicine, Chi-Mei Hospital, Tainan, Taiwan
| | - Pei-Ming Chu
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
| | - Yung-Hsin Cheng
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
| | - Huei-Chen Lin
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Physical Therapy, Shu-Zen Junior College of Medicine and Management, Taiwan
| | - Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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22
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Cheng YH, Chavez E, Tsai KL, Yang KC, Kuo WT, Yang YP, Chiou SH, Lin FH. Effects of thermosensitive chitosan-gelatin based hydrogel containing glutathione on Cisd2-deficient chondrocytes under oxidative stress. Carbohydr Polym 2017; 173:17-27. [PMID: 28732855 DOI: 10.1016/j.carbpol.2017.05.069] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Revised: 05/14/2017] [Accepted: 05/22/2017] [Indexed: 12/31/2022]
Abstract
Aging is considered as a primary risk factor in the development of osteoarthritis (OA) which associated with mitochondrial dysfunction and oxidative stress. CDGSH iron sulfur domain 2 (Cisd2) deficiency causes mitochondrial dysfunction and drive premature aging. In the present study, thermosensitive chitosan-gelatin based hydrogel containing glutathione was developed as injectable drug delivery system for administration by minimal invasive surgery for the treatment of OA. Cisd2 deficiency (Cisd2-/-) mouse induced pluripotent stem cells-derived chondrocytes were established and characterized. The results suggested that 100μM of glutathione may be an optimal concentration to treat Cisd2-/- chondrocytes without cytotoxicity. The developed hydrogel showed sustained release profile of the glutathione and could decrease the reactive oxygen species level. Post-treatment of glutathione-loaded hydrogel could rescue Cisd2-/- chondrocytes from oxidative damage via increasing catalase activity, down-regulation of inflammation, and decreasing apoptosis. These results suggest that thermosensitive glutathione-loaded hydrogel may be a potential antioxidant therapeutic strategy for treating Cisd2-/- chondrocytes in the near future.
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Affiliation(s)
- Yung-Hsin Cheng
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan; Department and Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan.
| | - Eddy Chavez
- Institute of Biomedical Engineering, College of Engineering and College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| | - Kai-Chiang Yang
- School of Dental Technology, College of Oral Medicine, Taipei Medical University, Taipei, Taiwan.
| | - Wei-Ting Kuo
- Institute of Biomedical Engineering, College of Engineering and College of Medicine, National Taiwan University, Taipei, Taiwan.
| | - Yi-Ping Yang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Shih-Hwa Chiou
- Department and Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan.
| | - Feng-Huei Lin
- Institute of Biomedical Engineering, College of Engineering and College of Medicine, National Taiwan University, Taipei, Taiwan; Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan.
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Abstract
Entanglements in energized equipment, including augers found in agricultural workplaces, have historically been a significant cause of traumatic injury. Incidents involving augers located inside agricultural confined spaces (primarily grain storage structures and forage silos), although relatively rare events, are a widely recognized problem due to the relative severity of the resulting injuries and the complexities of victim extrication. However, this problem is neither well documented nor elucidated in the research literature, other than anecdotal observations relating to medical treatment of auger-related injuries and citations for non-compliance with federal and state workplace safety regulations. A review of nearly 1,650 cases documented in the Purdue Agricultural Confined Spaces Incident Database from 1964 to 2013 identified 167 incidents involving entanglement in an energized auger that occurred while the victim was working inside an agricultural confined space. These incidents primarily included in-floor unloading augers, sweep augers, stirring augers, and auger components found on silo unloaders. Cases involving portable tube augers used to handle grain outside grain storage structures were not included. Based on analysis of the data, approximately 98% of known victims were male, with the 21-45 age group reporting the largest number of incidents. Nearly one-third (32.3%) of incidents were fatal, and lower limb amputation was the most frequently reported injury type. (It is believed that non-fatal incidents are grossly under-reported in the data set due to a lack of comprehensive reporting requirements, especially for most farms, feedlots, and seed processing operations, which are generally exempt from compliance with OSHA machine guarding, confined-space, and grain-handling standards.) The type of auger identified most frequently as the agent of injury was the exposed in-floor auger (48), which frequently resulted in amputation of one or more lower limbs when the victim stepped into an unguarded opening or well in the floor of the confined space. The primary reason identified as to why workers were exposed to energized augers in the cases documented was to assist in the removal of residual or out-of-condition grain. The large number of cases involving augers on top-unloading silo unloaders (36) was not anticipated. Silo unloaders also accounted for the largest number of documented fatalities (15). This analysis is the first known attempt to provide a better understanding of the frequency, severity, and causative factors of these incidents. Those key causative factors were found to be: (1) lack of or inadequate guarding, (2) unintentional energizing of components due to a lack of lockout/tagout training and provisions, and (3) exposure of untrained or inexperienced workers to energized and unguarded components during procedures to remove residual grain or other agricultural crops from storage structures. It is hoped that the results and recommendations presented will raise awareness of the hazards related to using energized equipment in confined spaces as well as contribute to development of new evidenced-based educational resources, engineering safety standards, and workplace safety regulations.
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24
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Cheng YH, Wen CM, Dybus A, Proskura WS. Fermentation products of Cordyceps militaris enhance performance and modulate immune response of weaned piglets. S AFR J ANIM SCI 2016. [DOI: 10.4314/sajas.v46i2.2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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25
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Chan SH, Chu PM, Kao CL, Cheng YH, Hung CH, Tsai KL. Oleic acid activates MMPs up-regulation through SIRT1/PPAR-γ inhibition: a probable linkage between obesity and coronary arterial disease. J Biochem 2016; 160:217-225. [PMID: 27072559 DOI: 10.1093/jb/mvw028] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 03/09/2016] [Indexed: 12/28/2022] Open
Abstract
Obesity is positively related to the growing prevalence of coronary arterial disease (CAD). It is well established in terms of the plasma concentrations of free fatty acid (FFA) that are up-regulated in cases associating with obesity. Oleic acid (OA) is known as the most abundant monounsaturated fatty acid in the human circulatory system. Several pro-atherosclerotic responses of OA have been established. Sirtuin 1 (SIRT1) acts as a key role in regulating the normal physical function in smooth muscle cells (SMCs). SIRT1 activation is developed as a novel approach to delay the progression of atherosclerotic injuries. However, the mechanism is still unclear as to whether OA affects SIRT1 expression and its activity in SMCs. We confirmed that OA treatment represses SIRT1 and peroxisome proliferator-activated receptors-γ levels in SMCs. Moreover, OA enhances by transforming the growth factor-β1 (TGF-β1) release via activation of NF-κB. OA causes NO production by inducing the inducible nitric oxide synthase overexpression, thereby promoting the secretions of matrix metalloproteinases-1 (MMP-1) and MMP-3. Overall, we suggested that OA enhances MMPs activation through SIRT1 down-regulation. Therefore, our findings might provide a novel route for developing new therapeutic treatments for FFAs-related CADs.
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Affiliation(s)
- Shih-Hung Chan
- Department of Internal Medicine, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Pei-Ming Chu
- Department of Anatomy, School of Medicine, China Medical University, Taichung, Taiwan
| | - Chung-Lan Kao
- Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yung-Hsin Cheng
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
| | - Ching-Hsia Hung
- Institute of Allied Health Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Kun-Ling Tsai
- Department of Physical Therapy, College of Medicine, National Cheng Kung University, Tainan, Taiwan
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26
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Tsai CY, Woung LC, Yen JC, Tseng PC, Chiou SH, Sung YJ, Liu KT, Cheng YH. Thermosensitive chitosan-based hydrogels for sustained release of ferulic acid on corneal wound healing. Carbohydr Polym 2016; 135:308-15. [DOI: 10.1016/j.carbpol.2015.08.098] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2015] [Revised: 08/30/2015] [Accepted: 08/31/2015] [Indexed: 12/29/2022]
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27
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Kuo WT, Huang JY, Chen MH, Chen CY, Shyong YJ, Yen KC, Sun YJ, Ke CJ, Cheng YH, Lin FH. Development of gelatin nanoparticles conjugated with phytohemagglutinin erythroagglutinating loaded with gemcitabine for inducing apoptosis in non-small cell lung cancer cells. J Mater Chem B 2016; 4:2444-2454. [DOI: 10.1039/c5tb02598b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Fluorescent gelatin nanoparticles (GNPs) conjugated with PHA-E and carried gemcitabine were synthesized by nanoprecipitation for targeting and treatment of NSCLC cells.
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Affiliation(s)
- Wei-Ting Kuo
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Jian-Yuan Huang
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Min-Hua Chen
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Ching-Yun Chen
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Yan-Jye Shyong
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Ko-Chung Yen
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Yu-Jun Sun
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
| | - Cherng-Jyh Ke
- Biomaterials Translational Research Center
- China Medical University Hospital
- Taichung
- Taiwan
| | - Yung-Hsin Cheng
- Department of Education and Research
- Taipei City Hospital
- Taipei
- Taiwan
| | - Feng-Huei Lin
- Institute of Biomedical Engineering
- National Taiwan University
- Taipei
- Taiwan
- Institute of Biomedical Engineering and Nanomedicine
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28
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Han JC, Ma K, Wang JG, Chen GH, Zhang JL, Qu HX, Yan YF, Cheng YH. Effects of Non-phytate Phosphorus and 1a-Hydroxycholecalciferol on Growth Performance, Bone Mineralization, and Carcass Traits of Broiler Chickens. Rev Bras Cienc Avic 2015. [DOI: 10.1590/1516-635x1704503-510] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- JC Han
- Shangqiu Normal University, China
| | - K Ma
- Shangqiu Normal University, China
| | - JG Wang
- Shangqiu Normal University, China; Henan Agricultural University, China
| | - GH Chen
- Shangqiu Normal University, China; Henan Agricultural University, China
| | - JL Zhang
- Shangqiu Normal University, China; Henan Agricultural University, China
| | - HX Qu
- Shangqiu Normal University, China
| | - YF Yan
- Shangqiu Normal University, China
| | - YH Cheng
- National Ilan University, Taiwan
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29
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Cheng YH, Chen CH, Yu KY, Hsueh WJ. Extraordinary light absorptance in graphene superlattices. Opt Express 2015; 23:28755-28760. [PMID: 26561144 DOI: 10.1364/oe.23.028755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Extraordinary absorption decrease in graphene superlattices in the visible range is presented. Due to competition between loss and resonant reflection at resonance, the absorption displays non-monotonic behavior. As the period number increases above a certain critical value, absorption decreases with the increase in the period number. This is in contrast to ordinary absorption for a non-resonant condition, which monotonically increases with the period number. Moreover, this extraordinary property can also be controlled by applying a gate voltage to graphene sheets. The results provide not only a new understanding of graphene physics but also an application in nanophotonics and optoelectronics.
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30
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Han JC, Chen GH, Wang JG, Zhang JL, Qu HX, Zhang CM, Yan YF, Cheng YH. Evaluation of Relative Bioavailability of 25-Hydroxycholecalciferol to Cholecalciferol for Broiler Chickens. Asian-Australas J Anim Sci 2015; 29:1145-51. [PMID: 26954155 PMCID: PMC4932568 DOI: 10.5713/ajas.15.0553] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 08/25/2015] [Accepted: 10/14/2015] [Indexed: 11/27/2022]
Abstract
This study was conducted to evaluate the relative bioavailability (RBV) of 25-hydroxycholecalciferol (25-OH-D3) to cholecalciferol (vitamin D3) in 1- to 21-d-old broiler chickens fed with calcium (Ca)- and phosphorus (P)-deficient diets. On the day of hatch, 450 female Ross 308 broiler chickens were assigned to nine treatments, with five replicates of ten birds each. The basal diet contained 0.50% Ca and 0.25% non-phytate phosphorus (NPP) and was not supplemented with vitamin D. Vitamin D3 was fed at 0, 2.5, 5.0, 10.0, and 20.0 μg/kg, and 25-OH-D3 was fed at 1.25, 2.5, 5.0, and 10.0 μg/kg. The RBV of 25-OH-D3 was determined using vitamin D3 as the standard source by the slope ratio method. Vitamin D3 and 25-OH-D3 intake was used as the independent variable for regression analysis. The linear relationships between the level of vitamin D3 or 25-OH-D3 and body weight gain (BWG) and the weight, length, ash weight, and the percentage of ash, Ca, and P in femur, tibia, and metatarsus of broiler chickens were observed. Using BWG as the criterion, the RBV value of 25-OH-D3 to vitamin D3 was 1.85. Using the mineralization of the femur, tibia, and metatarsus as criteria, the RBV of 25-OH-D3 to vitamin D3 ranged from 1.82 to 2.45, 1.86 to 2.52, and 1.65 to 2.05, respectively. These data indicate that 25-OH-D3 is approximately 2.03 times as active as vitamin D3 in promoting growth performance and bone mineralization in broiler chicken diets.
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Affiliation(s)
- J C Han
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, Henan 476000, China
| | - G H Chen
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, Henan 476000, China.,College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - J G Wang
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, Henan 476000, China.,College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - J L Zhang
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, Henan 476000, China.,College of Animal Husbandry and Veterinary Science, Henan Agricultural University, Zhengzhou, Henan 450002, China
| | - H X Qu
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, Henan 476000, China
| | - C M Zhang
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, Henan 476000, China
| | - Y F Yan
- Department of Animal Science, College of Life Science, Shangqiu Normal University, Shangqiu, Henan 476000, China
| | - Y H Cheng
- Department of Biotechnology and Animal Science, National Ilan University, I-Lan 26047, Taiwan
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31
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Tsao CW, Cheng YH, Hsueh WJ. High-order micro-ring resonator with perfect transmission using symmetrical Fibonacci structures. Opt Lett 2015; 40:4237-4240. [PMID: 26371905 DOI: 10.1364/ol.40.004237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A symmetrical Fibonacci micro-ring resonator (SFMR) has been presented to avoid the coupled resonator optical waveguide (CROW) bottle, which is a bottle-shaped distribution for high orders in transmission spectra. The SFMR features three advantages that improve filtering quality compared to that provided by traditional periodic micro-ring resonators. First, sharper resonances are obtained by eliminating the CROW bottle from the mini gaps that appear in the major-band region. Second, peaks with perfect transmission are always obtained without a radius and coupling modulation in the mini-band regions and major-band regions. Third, the full width at half-maximum of the band-edge peak decreases with the increasing generation order.
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32
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Han JC, Qu HX, Wang JG, Chen GH, Yan YF, Zhang JL, Hu FM, You LY, Cheng YH. Comparison of the Growth and Mineralization of the Femur, Tibia, and Metatarsus of Broiler Chicks. Rev Bras Cienc Avic 2015. [DOI: 10.1590/1516-635x1703333-340] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- JC Han
- Shangqiu Normal University, China
| | - HX Qu
- Shangqiu Normal University, China
| | - JG Wang
- Shangqiu Normal University, China; Henan Agricultural University, China
| | - GH Chen
- Shangqiu Normal University, China; Henan Agricultural University, China
| | - YF Yan
- Shangqiu Normal University, China
| | - JL Zhang
- Shangqiu Normal University, China
| | - FM Hu
- Shangqiu Normal University, China
| | - LY You
- Shangqiu Normal University, China
| | - YH Cheng
- National Ilan University, Taiwan
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33
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Tsao CW, Cheng YH, Hsueh WJ. Sharp resonance with complete transmission in Thue-Morse microring resonators. Opt Express 2015; 23:13613-13618. [PMID: 26074610 DOI: 10.1364/oe.23.013613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present sharp resonances with complete transmission in the Thue-Morse microring resonator. The quasi-periodic structure attains a better quality of filtering than the traditional periodic structure. This includes the following: (i) the high-Q resonances with complete transmission are obtained in the transmission spectra, (ii) the maximum value of transmittance always remains 1 for an arbitrary proportion of two different radiuses in the major-band regions, and (iii) the complete transmission occurs for arbitrary coupling in the mini-band regions. Moreover, we propose an analytical method to predict the occurrences of resonance peaks in the mini-band regions based on the gap map.
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Abstract
Disease affecting the cornea is a common cause of blindness worldwide. To date, the amniotic membrane (AM) is the most widely used clinical method for cornea regeneration. However, donor-dependent differences in the AM may result in variable clinical outcomes. To overcome this issue, biomaterials are currently under investigation for corneal regeneration in vitro and in vivo. In this article, we highlight the recent advances in hydrogels, bioengineered prosthetic devices, contact lenses, and drug delivery systems for corneal regeneration. In clinical studies, the therapeutic effects of biomaterials, including fibrin and collagen-based hydrogels and silicone contact lenses, have been demonstrated in damaged cornea. The combination of cells and biomaterials may provide potential treatment in corneal wound healing in the future.
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Affiliation(s)
- I-Lun Tsai
- Department of Ophthalmology, Taipei City Hospital, Taipei, Taiwan, ROC
| | - Chih-Chien Hsu
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Kuo-Hsuan Hung
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan, ROC; Division of Ophthalmology, National Yang-Ming University Hospital, I-Lan, Taiwan, ROC
| | - Chi-Wen Chang
- School of Nursing, College of Medicine, Chang-Gung University, Taoyuan, Taiwan, ROC
| | - Yung-Hsin Cheng
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan, ROC; Institute of Pharmacology, National Yang-Ming University School of Medicine, Taipei, Taiwan, ROC.
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35
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Chang CH, Cheng YH, Hsueh WJ. Twin extra-high photoluminescence in resonant double-period quantum wells. Opt Lett 2014; 39:6581-6584. [PMID: 25490626 DOI: 10.1364/ol.39.006581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Twin extra high photoluminescence (PL) in resonant quasi-periodic double-period quantum wells (DPQWs) for higher-generation orders is demonstrated. In the DPQW, the number of maxima in the maximum values of the PL intensity is two, which is different from other quasi-periodic quantum wells (QWs) and traditional periodic QWs. The maximum PL intensity in a DPQW is also stronger than that in a periodic QW under the anti-Bragg condition and that in a Fibonacci QW. Although the peaks of the squared electric field for the twin PL are both located near the QWs, their field profiles are distinct.
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36
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Cheng YH, Deng TC, Chen CC, Chiang CH, Chang CA. First Report of Euphorbia leaf curl virus and Papaya leaf curl Guangdong virus on Passion Fruit in Taiwan. Plant Dis 2014; 98:1746. [PMID: 30703901 DOI: 10.1094/pdis-05-13-0554-pdn] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Passion fruit (Passiflora edulis × Passiflora edulis f. flavicarpa) 'Tainung No. 1' is the main variety cultivated in Taiwan, which is a hybrid and propagated only by grafting. In the spring of 2011, plants with systemic mottle and malformation on leaves were found in some orchards located in Puli and Nantou in central Taiwan. Interestingly, after 3 months of growth, most of these diseased plants became symptomless when the weather became warmer. Nevertheless, some striped concaves were observed on immature fruit surfaces of diseased plants. In March of 2011, two leaf samples exhibiting mosaic and three samples showing malformation were collected and tested by DAS-ELISA; none positively reacted with antibodies against the Cucumber mosaic virus (CMV), East Asian passiflora virus (EAPV), Passion fruit mottle virus (PaMV), or Passion fruit crinkle virus (PCV) that have previously occurred in Taiwan. Rolling-circle amplification (RCA) with hexamer primers were adopted to analyze potential begomoviruses that were prevalent on the other crops in Taiwan (3). The RCA amplified products were digested with BamHI and separated on 1.2% agarose by gel electrophoresis. A fragment, about 3 kb, was purified from each gel and cloned into the respective site of pBluescript SK(-) individually. Clones were screened by EcoRI digestion and two types of restriction fragment length patterns were found among them. One type of a clone containing 2,745 nucleotides (Accession No. KC161185) with 98.5% identity to Euphorbia leaf curl virus (EuLCV) (1) and the other type of a clone containing 2,732 nucleotides (KC161184) with 91.7% identity to Papaya leaf curl Guangdong virus (PaLCuGDV) (2) were revealed by nucleotide comparisons of their DNA-A in GenBank. Accordingly, we confirmed the existence of passiflora isolates of EuLCV and PaLCuGDV. PCR primers CPup/Edw/Pdw (5'TGTGAAGG(A/C/G/T)CC(A/G/T)TGTAA(A/G)GT3'/5'CGCAGTTT CTGGAGGATATTAAG3'/5'TCGCATGCCACTTCCTCAGT3') were designed to differentiate these viruses by amplifying a 235 bp DNA fragment for EuLCV and 345 bp for PaLCuGDV. In a brief survey, all 26 passion fruit leaf samples collected from seven orchards were double infected with EuLCV and PaLCuGDV; only six samples collected from a specific orchard were found to harbor the PaLCuGDV infection. Thirty-seven seedlings from passion fruit (P. edulis f. flavicarpa) seeds were indexed and all were free from both viruses. Five virus-free plantlets of P. edulis f. flavicarpa, one EuLCV and PalCuGDV double infected P. edulis × P. edulis f. flavicarpa, and 20 whiteflies were put into one net tent for 2 months, and then the five plantlets were tested by PCR. The two EuLCV and PalCuGDV specific fragments were amplified from all five plantlets. The two begomoviruses cause mild symptoms on passion fruit plant but the appearance of the fruit was affected. To our knowledge, this is the first report of begomoviruses infecting passion fruit in Taiwan and in Asia. References: (1) X. Ma et al. J. Phytopathol. 152:215. (2) X. Wang et al. Virus Genes 29:303. (3) C. Wu et al. J. Virol. Methods 147:355.
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Affiliation(s)
- Y H Cheng
- Division of Plant Pathology, Agricultural Research Institute, Taichung, Taiwan
| | - T C Deng
- Division of Plant Pathology, Agricultural Research Institute, Taichung, Taiwan
| | - C C Chen
- Division of Plant Pathology, Agricultural Research Institute, Taichung, Taiwan
| | - C H Chiang
- Department of Molecular Biotechnology, Da-Yeh University, Chunghua, Taiwan
| | - C A Chang
- Graduate Institute of Biochemical Science and Technology, Chaoyang University of Technology, Taichung, Taiwan
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Tsao CW, Cheng YH, Hsueh WJ. Localized modes in one-dimensional symmetric Thue-Morse quasicrystals. Opt Express 2014; 22:24378-24383. [PMID: 25322013 DOI: 10.1364/oe.22.024378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We present occurrence of the strongly localized modes with high transmission in one dimensional symmetric Thue-Morse quasicrystals. This quasicrystal has some interesting properties, including (i) there are strongly localized modes in separated regions which are around odd semi-quarter-wave thickness of the system, (ii) both the frequency of localized mode and the thicknesses of the space layer to appear localized modes are variant for different generation orders of the system, and (iii) the sharpness of the resonant peaks in the transmission spectra increases as the generation order of the system increases.
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Cheng YH, Hung KH, Tsai TH, Lee CJ, Ku RY, Chiu AWH, Chiou SH, Liu CJL. Sustained delivery of latanoprost by thermosensitive chitosan-gelatin-based hydrogel for controlling ocular hypertension. Acta Biomater 2014; 10:4360-6. [PMID: 24914827 DOI: 10.1016/j.actbio.2014.05.031] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2014] [Revised: 05/14/2014] [Accepted: 05/27/2014] [Indexed: 12/22/2022]
Abstract
Glaucoma is an irreversible ocular disease that may lead to progressive visual field loss and eventually to blindness with inadequately controlled intraocular pressure (IOP). Latanoprost is one of the most potent ocular hypotensive compounds, the current first-line therapy in glaucoma. However, the daily instillation required for efficacy and undesirable side-effects are major causes of treatment adherence failure and persistence in glaucoma therapy. In the present study, we developed an injectable thermosensitive chitosan/gelatin/glycerol phosphate (C/G/GP) hydrogel as a sustained-release system of latanoprost for glaucoma treatment. The latanoprost-loaded C/G/GP hydrogel can gel within 1min at 37°C. The results show a sustained release of latanoprost from C/G/GP hydrogel in vitro and in vivo. The latanoprost-loaded C/G/GP hydrogel showed a good in vitro and in vivo biocompatibility. A rabbit model of glaucoma was established by intravitreal injection of triamcinolone acetonide. After a single subconjunctival injection of latanoprost-loaded C/G/GP hydrogel, IOP was significantly decreased within 8days and then remained at a normal level. The results of the study suggest that latanoprost-loaded C/G/GP hydrogel may have a potential application in glaucoma therapy.
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Affiliation(s)
- Yung-Hsin Cheng
- Department and Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; Department of Education and Research, Taipei City Hospital, Taipei, Taiwan
| | - Kuo-Hsuan Hung
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; National Yang-Ming University School of Medicine, Taipei, Taiwan; Division of Ophthalmology, National Yang-Ming University Hospital, I-Lan, Taiwan
| | - Tung-Hu Tsai
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan; Institute of Traditional Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chia-Jung Lee
- Department of Education and Research, Taipei City Hospital, Taipei, Taiwan; Institute of Traditional Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Ruy-Yu Ku
- National Yang-Ming University School of Medicine, Taipei, Taiwan
| | | | - Shih-Hwa Chiou
- Department and Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; Institute of Traditional Medicine, National Yang-Ming University, Taipei, Taiwan.
| | - Catherine Jui-Ling Liu
- National Yang-Ming University School of Medicine, Taipei, Taiwan; Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan.
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Chang YC, Chang WC, Hung KH, Yang DM, Cheng YH, Liao YW, Woung LC, Tsai CY, Hsu CC, Lin TC, Liu JH, Chiou SH, Peng CH, Chen SJ. The generation of induced pluripotent stem cells for macular degeneration as a drug screening platform: identification of curcumin as a protective agent for retinal pigment epithelial cells against oxidative stress. Front Aging Neurosci 2014; 6:191. [PMID: 25136316 PMCID: PMC4117985 DOI: 10.3389/fnagi.2014.00191] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Accepted: 07/11/2014] [Indexed: 12/22/2022] Open
Abstract
Age-related macular degeneration (AMD) is one retinal aging process that may lead to irreversible vision loss in the elderly. Its pathogenesis remains unclear, but oxidative stress inducing retinal pigment epithelial (RPE) cells damage is perhaps responsible for the aging sequence of retina and may play an important role in macular degeneration. In this study, we have reprogrammed T cells from patients with dry type AMD into induced pluripotent stem cells (iPSCs) via integration-free episomal vectors and differentiated them into RPE cells that were used as an expandable platform for investigating pathogenesis of the AMD and in-vitro drug screening. These patient-derived RPEs with the AMD-associated background (AMD-RPEs) exhibited reduced antioxidant ability, compared with normal RPE cells. Among several screened candidate drugs, curcumin caused most significant reduction of ROS in AMD-RPEs. Pre-treatment of curcumin protected these AMD-RPEs from H2O2-induced cell death and also increased the cytoprotective effect against the oxidative stress of H2O2 through the reduction of ROS levels. In addition, curcumin with its versatile activities modulated the expression of many oxidative stress-regulating genes such as PDGF, VEGF, IGFBP-2, HO1, SOD2, and GPX1. Our findings indicated that the RPE cells derived from AMD patients have decreased antioxidative defense, making RPE cells more susceptible to oxidative damage and thereby leading to AMD formation. Curcumin represented an ideal drug that can effectively restore the neuronal functions in AMD patient-derived RPE cells, rendering this drug an effective option for macular degeneration therapy and an agent against aging-associated oxidative stress.
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Affiliation(s)
- Yun-Ching Chang
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan ; School of Medicine, Institute of Pharmacology, National Yang-Ming University Taipei, Taiwan ; Department of Ophthalmology, Taipei Veterans General Hospital Taipei, Taiwan
| | - Wei-Chao Chang
- Graduate Institute of Cancer Biology, China Medical University Taichung, Taiwan ; Center for Molecular Medicine, China Medical University Hospital Taichung, Taiwan
| | - Kuo-Hsuan Hung
- Division of Ophthalmology, National Yang-Ming University Hospital I-Lan, Taiwan ; School of Medicine, Institute of Clinical Medicine, National Yang-Ming University Taipei, Taiwan
| | - Der-Ming Yang
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan
| | - Yung-Hsin Cheng
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan ; School of Medicine, Institute of Pharmacology, National Yang-Ming University Taipei, Taiwan
| | - Yi-Wen Liao
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan
| | - Lin-Chung Woung
- Department of Ophthalmology, Taipei City Hospital Taipei, Taiwan
| | - Ching-Yao Tsai
- Department of Ophthalmology, Taipei City Hospital Taipei, Taiwan
| | - Chih-Chien Hsu
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan ; Department of Ophthalmology, Taipei Veterans General Hospital Taipei, Taiwan
| | - Tai-Chi Lin
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan ; Department of Ophthalmology, Taipei Veterans General Hospital Taipei, Taiwan
| | - Jorn-Hon Liu
- Department of Ophthalmology, Cheng-Hsin Hospital Taipei, Taiwan
| | - Shih-Hwa Chiou
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan ; School of Medicine, Institute of Pharmacology, National Yang-Ming University Taipei, Taiwan ; Department of Ophthalmology, Taipei Veterans General Hospital Taipei, Taiwan ; School of Medicine, Institute of Clinical Medicine, National Yang-Ming University Taipei, Taiwan
| | - Chi-Hsien Peng
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan ; Department of Ophthalmology, Shin Kong Wu Ho-Su Memorial Hospital and Fu Jen Catholic University Taipei, Taiwan
| | - Shih-Jen Chen
- Department of Medical Research and Education, Taipei Veterans General Hospital Taipei, Taiwan ; Department of Ophthalmology, Taipei Veterans General Hospital Taipei, Taiwan
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Tsai KL, Chang YL, Huang PH, Cheng YH, Liu DH, Chen HY, Kao CL. Ginkgo biloba extract inhibits oxidized low-density lipoprotein (oxLDL)-induced matrix metalloproteinase activation by the modulation of the lectin-like oxLDL receptor 1-regulated signaling pathway in human umbilical vein endothelial cells. J Vasc Surg 2014; 63:204-15.e1. [PMID: 25080882 DOI: 10.1016/j.jvs.2014.05.098] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Accepted: 05/26/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND The overexpression of matrix metalloproteinases (MMPs) induced by oxidized low-density lipoprotein (oxLDL) has been found in atherosclerotic lesions. Previous reports have identified that oxLDL, via the upregulation of lectin-like ox-LDL receptor 1 (LOX-1), modulates the expression of MMPs in endothelial cells. Ginkgo biloba extract (GbE), from Ginkgo biloba leaves, has often been considered as a therapeutic compound for cardiovascular and neurologic diseases. However, further investigation is needed to ascertain the probable molecular mechanisms underlying the antiatherogenic effects of GbE. The aim of this study was to investigate the effects of GbE on oxLDL-activated MMPs of human endothelial cells and to test the involvement of LOX-1 and protein kinase C (PKC)-α, extracellular signal-regulated kinase (ERK), and peroxisome proliferator-activated receptor-γ (PPAR-γ). METHODS Human umbilical vein endothelial cells were stimulated with oxLDL, with or without GbE treatment. LOX-1 signaling and MMPs expression were tested by Western blotting or activity assay. Further, protein expression levels of PKC-α, ERK, nuclear factor-κB, and PPAR-γ were investigated by Western blotting. RESULTS GbE inhibited the oxLDL-caused upregulation of MMP-1, MMP-2, and MMP-3. Pretreating with GbE reduced oxLDL-activated LOX-1 expression. Furthermore, pharmacologic inhibitors of free radicals, Ca(++), PKC, and GbE, inhibited the oxLDL-induced ERK and nuclear factor-κB activation. Lastly, GbE ameliorated the oxLDL-inhibited PPAR-γ function. CONCLUSIONS Data obtained in this study indicate that GbE actives its protective effects by regulating the LOX-1-mediated PKC-α/ERK/PPAR-γ/MMP pathway, resulting in the suppression of reactive oxygen species formation and, ultimately, the reduction of MMPs expression in endothelial cells treated with oxLDL.
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Affiliation(s)
- Kun-Ling Tsai
- Institute and Department of Physical Therapy, National Cheng Kung University, Tainan, Taiwan; Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Yuh-Lih Chang
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Po-Hsun Huang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yung-Hsin Cheng
- Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Ding-Hao Liu
- Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Hsiao-Yun Chen
- Institute and Department of Physical Therapy, National Cheng Kung University, Tainan, Taiwan
| | - Chung-Lan Kao
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Physical Medicine and Rehabilitation, Taipei Veterans General Hospital, Taipei, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan; Institute of Physical Therapy & Assistive Technology, National Yang-Ming University, Taipei, Taiwan.
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Tsai KL, Huang PH, Kao CL, Leu HB, Cheng YH, Liao YW, Yang YP, Chien Y, Wang CY, Hsiao CY, Chiou SH, Chen JW, Lin SJ. Aspirin attenuates vinorelbine-induced endothelial inflammation via modulating SIRT1/AMPK axis. Biochem Pharmacol 2013; 88:189-200. [PMID: 24345330 DOI: 10.1016/j.bcp.2013.12.005] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [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: 10/03/2013] [Revised: 11/24/2013] [Accepted: 12/03/2013] [Indexed: 12/20/2022]
Abstract
Vinorelbine (VNR), a semisynthetic vinca alkaloid acquired from vinblastine, is frequently used as the candidate for intervention of solid tumors. Nevertheless, VNR-caused endothelial injuries may lead a mitigative effect of clinical treatment efficiency. A growing body of evidence reveals that aspirin is a potent antioxidant and anti-inflammation drug. We investigated whether aspirin attenuate VNR-induced endothelial dysfunction. Human endothelial cells (EA.hy 926) were treated with VNR to cause endothelial inflammation. Western blotting, ROS assay, ELISA were used to confirm the anti-inflammatory effect of aspirin. We confirmed that VNR suppresses SIRT1 expression, reduced LKB1 and AMPK phosphorylation as well as enriched PKC activation in treated endothelial cells. Furthermore, the membrane translocation assay displayed that the levels of NADPH oxidase subunits p47phox and Rac-1 in membrane fractions of endothelial cells were higher in cells that had been treated with VNR for than in untreated cells. We corroborated that treatment of Aspirin significantly diminishes VNR-repressed SIRT1, LKB1 and AMPK phosphorylation and VNR-promoted NADPH oxidase activation, however, those findings were vanished by SIRT1 and AMPK siRNAs. Our data also shown that Aspirin represses VNR-activated TGF-beta-activated kinase-1 (TAK1) activation, inhibited the interaction of TAK1/TAK-binding protein1 (TAB1), suppressed NF-kappa B activation and pro-inflammatory cytokine secretion. We demonstrated a novel connection between VNR-caused oxidative damages and endothelial dysfunction, and provide further insight into the protective effects of aspirin in VNR-caused endothelial dysfunction.
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Affiliation(s)
- Kun-Ling Tsai
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Po-Hsun Huang
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chung-Lan Kao
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Physical Medicine and Rehabilitation, Taipei, Taiwan
| | - Hsin-Bang Leu
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yung-Hsin Cheng
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan
| | - Yi-Wen Liao
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yi-Ping Yang
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Yueh Chien
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Chien-Ying Wang
- Department of Emergency Medicine, National Yang-Ming University, Taipei, Taiwan
| | - Chen-Yuan Hsiao
- Department of Surgery, National Yang-Ming University Hospital, Taipei, Taiwan
| | - Shih-Hwa Chiou
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan.
| | - Jaw-Wen Chen
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Institute of Pharmacology, National Yang-Ming University, Taipei, Taiwan; Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Shing-Jong Lin
- Institute of Clinical Medicine, National Yang-Ming University, Taipei, Taiwan; Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan; Department of Medical Research and Education, Taipei Veterans General Hospital, Taipei, Taiwan.
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Tsao CW, Hsueh WJ, Chang CH, Cheng YH. Quasi-Bragg conditions in Thue-Morse dielectric multilayers. Opt Lett 2013; 38:4562-4565. [PMID: 24322074 DOI: 10.1364/ol.38.004562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The existence of quasi-Bragg conditions (QBCs) in Thue-Morse dielectric multilayers (TMDMs), based on high reflectance and large forbidden gap regions in its transmission spectra, is presented. In contrast to a single traditional Bragg condition (TBC) in periodic bilayers, there are three QBCs in TMDMs. The formula for each of these QBCs is derived. The results show that one of these QBCs just overlaps the TBC. However, a singular point with perfect transmission exists in this QBC at the quarter-wave stack, at which high reflection exists in the periodic bilayers.
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Abstract
A multiple narrow bandpass filter with both high Q factor and complete transmission using quasi-periodic Thue-Morse dielectric multilayers is proposed. The Q factor of the system increases exponentially with the generation order. Even though the Q factor of resonances increases as the generation order of the multilayers increases, these resonances are still complete resonances. The number of resonance peaks for the bandpass filter of the system also increases as the generation order increases. These resonance peaks have a multifractal distribution throughout the frequency range, which is different from that in traditional periodical multilayers.
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Abstract
In 2009, more than 50% of vine type French beans were found bearing severe viral symptoms in a vegetable garden in Nantou County, Taiwan. Infected plants were stunted and exhibited pronounced mottling symptoms on their leaves. The symptomatic plants were mechanically inoculated on Chenopodium quinoa and local lesions developed 7 to 10 days after inoculation. The virus source established by back isolation the single lesion from C. quinoa on French beans developed symptoms similar to those found in the field. Host range test showed that this isolate could only infect leguminous plants, including soybean, mung bean, pea, peanut, asparagus bean, cowpea, adzuki bean, and lima bean, but not cucurbitaceous and solanaceous plants. Since only Cucumber mosaic virus (CMV) has been reported in Taiwan to induce similar symptoms in French beans, we tested both the field collected and inoculated French beans by CMV antiserum in ELISA but obtained a negative result. Due to subsequent electron microscopy studies that found potyvirus and carlavirus like particles in the leaf dips of infected French beans, we conducted reverse transcription (RT)-PCR using generic degenerate primers for potyviruses (Hrp5/Pot1 (2) and PotZ/Pot1 (3)) and carlaviruses (Decarla-u2 (5'-TGCACTGARTCMGAYTATGARGCYTT-3' and Decarla-d1 (5'-GCACATRTCRTCVCCDGCAAA-3') previously designed in our lab. No amplification was found from the potyvirus primers, while the carlavirus one gave an expected amplicon of 285 bp, which was found sharing 81% nucleotide sequence identity with the replicase gene of Cowpea mild mottle virus (CpMMV) (GenBank Accession No. FJ560903). A primer pair (CpMMV-CPu: 5'-TTTACTCTTAggTWATggAgTC-3' and CpMMV-CPd: 5'-CCTATTAAAACACACAAHTCAAA-3') was thus designed to amplify the complete coat protein (CP) gene based on the reported CP sequences and obtained an expected 867-bp product from our French bean isolate. This 867-bp sequence (JX020701) was confirmed to have 97.6% amino acid sequence identities with the CP gene of a Puerto Rican CpMMV isolate (GU191840). In a separate survey, another isolate from asparagus bean (CpMMV-V) causing mild mottling symptom was obtained. Analyses of the CP gene of CpMMV-V (JX070669) confirmed that it shared 88.8% and 97.8% of nucleotide and amino acid sequence identities with the French bean isolate, respectively. Different from most carlaviruses with aphid transmissibility, CpMMV has been shown to be transmitted non-persistently by whiteflies (1). Both CpMMV isolates from Taiwan were confirmed to be transmitted by silver leaf whiteflies (Bemicia argentifolii Bellows and Perring). This is the first record of whitefly transmissible legume virus in Taiwan. Since whitefly has been a problem in agriculture worldwide, CpMMV can be a new emerging threat for Taiwan's legume crop production. References: (1) M. Iwaki et al. Plant Dis. 66:365, 1982. (2) S. S. Pappu et al. J. Virol. Methods 41:9, 1993. (3) F. M. Zerbini et al. Phytopathology 85:746.
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Affiliation(s)
- C A Chang
- Graduate Institute of Biochemical Science and Technology, Chaoyang University of Technology, Wufeng, Taichung, Taiwan
| | - L Y Chien
- Graduate Institute of Biochemical Science and Technology, Chaoyang University of Technology, Wufeng, Taichung, Taiwan
| | - C F Tsai
- Graduate Institute of Biochemical Science and Technology, Chaoyang University of Technology, Wufeng, Taichung, Taiwan
| | - Y Y Lin
- Graduate Institute of Biochemical Science and Technology, Chaoyang University of Technology, Wufeng, Taichung, Taiwan
| | - Y H Cheng
- Plant Pathology Division, Agricultural Research Institute, Wufeng, Taichung, Taiwan
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Han JC, Wang YL, Qu HX, Liang F, Zhang JL, Shi CX, Zhang XL, Li L, Xie Q, Wang CL, Yan YY, Dong XS, Cheng YH. One Alpha-hydroxycholecalciferol Improves Growth Performance, Tibia Quality, and Meat Color of Broilers Fed Calcium- and Phosphorus-Deficient Diets. Asian-Australas J Anim Sci 2012; 25:267-71. [PMID: 25049561 PMCID: PMC4093124 DOI: 10.5713/ajas.2011.11320] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 11/02/2011] [Indexed: 11/27/2022]
Abstract
An experiment was conducted to evaluate the effects of one alpha-hydroxycholecalciferol (1α-OH D3) on growth performance, tibia quality, and skin and meat color in broilers fed calcium (Ca)- and phosphorus (P)-deficient corn-soybean meal diets. A total of 288 male Ross broilers, at 21 days of age, were randomly assigned to three treatments with eight cages per treatment. Three levels of 1α-OH D3 (0, 5, and 10 μg/kg) were added to a basal diet (0.50% Ca, 0.13% non-phytate phosphorus (NPP), and 0.35% total phosphorus (tP)) without vitamin D3. As a result of this study, the addition of 1α-OH D3 increased body weight gain (p<0.001), feed intake (p = 0.007), feed efficiency (p<0.001), tibia weight (p = 0.002), length (p<0.001), breaking-strength (p = 0.012), ash (p<0.001), Ca (p<0.001), and P content (p = 0.004). Dietary 1α-OH D3 enhanced breast meat yellowness (p = 0.015) and the length and weight of the small intestine of the broilers. Moreover, 1α-OH D3 decreased serum Ca concentration (p = 0.074) and breast meat redness (p = 0.010). These results indicate that the 1α-OH D3 improves growth, tibia quality, and meat color in broilers fed Ca- and P-deficient corn-soybean meal diets.
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Affiliation(s)
- J C Han
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - Y L Wang
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - H X Qu
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - F Liang
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - J L Zhang
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - C X Shi
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - X L Zhang
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - L Li
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - Q Xie
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - C L Wang
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - Y Y Yan
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - X S Dong
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
| | - Y H Cheng
- Taizhou Healtech Chemical Co., Ltd., Taizhou, Zhejiang, 318000, China
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Cheng YH, Yang SH, Yang KC, Chen MP, Lin FH. The effects of ferulic acid on nucleus pulposus cells under hydrogen peroxide-induced oxidative stress. Process Biochem 2011. [DOI: 10.1016/j.procbio.2011.05.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Abstract
Bell pepper (Capsicum annuum L.) plants exhibiting systemic mild mosaic, vein yellowing, and leaf malformation were collected from Puli City in 2006. Double-antibody sandwich (DAS)-ELISA was used to test these samples for Chilli veinal mottle virus (ChiVMV) infection using polyclonal antibodies. In addition, Chenopodium quinoa, C. amaranticolor, and Nicotiana benthamiana plants were mechanically inoculated with sap extracted from collected samples. Ten days postinoculation, chlorotic local lesions were observed on inoculated leaves of C. quinoa and C. amaranticolor plants, whereas, systemic mosaic and foliar distortion symptoms were developed on upper leaves of N. benthamiana plants. The DAS-ELISA test showed that field-collected pepper samples and inoculated leaves of C. quinoa and C. amaranticolor were infected with ChiVMV, while N. benthamiana with mosaic symptoms did not react with ChiVMV antibodies. To confirm ChiVMV, field-collected samples as well as mechanically inoculated plants were tested by reverse transcription (RT)-PCR using the potyvirus degenerate primers Hrp5/Pot1 (2). Amplified RT-PCR products were cloned and sequenced. Sequence analysis of amplified fragments (1.4 kb) revealed that field-collected pepper samples were infected with ChiVMV and Pepper mottle virus (PepMoV). The DNA fragment amplified from C. quinoa and C. amaranticolor showed high (99.2%) sequence identities with the CP gene of ChiVMV (3) (GenBank Accession No. AM909717). However, amplicons obtained from N. benthamiana plants (GenBank Accession No. HQ329082) that showed mosaic symptoms showed 83.6% to 98.7% nucleotide identities with PepMoV (GenBank Accession Nos. AB126033, AF227728, AF440801, AF501591, EU586133, and M96425). Next, a pure isolate of PepMoV was established on N. benthamiana by mechanical inoculation of diluted plant sap obtained from a PepMoV-infected N. benthamiana plant. Bell pepper plants inoculated with the Taiwan isolate of PepMoV developed mosaic and leaf distortion symptoms. Antiserum against the PepMoV Taiwan isolate was subsequently prepared by immunizing rabbits with purified virus particles. Using the prepared antiserum and specific primers (1) to detect PepMoV, ChiVMV, and Pepper veinal mottle virus (PVMV), three viruses could be readily detected and differentiated from diseased bell peppers in the field. In a survey done in 2007, 18 of 33 pepper samples from southern Taiwan were found with mixed infections of PepMoV and ChiVMV, seven samples were infected with PepMoV and PVMV, five samples were infected with PVMV, and another three samples were infected with ChiVMV. To our knowledge, this is the first report of the occurrence of PepMoV in bell peppers in Taiwan. References: (1) Y. H. Cheng et al. Plant Dis. 93:107, 2009. (2) S. S. Pappu et al. Plant Dis. 82:1121, 1998. (3) W. S. Tsai et al. Plant Pathol. 58:408, 2008.
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Affiliation(s)
- Y H Cheng
- Plant Pathology Division, Agricultural Research Institute, Wufeng, Taichung, Taiwan
| | - T C Deng
- Plant Pathology Division, Agricultural Research Institute, Wufeng, Taichung, Taiwan
| | - C C Chen
- Plant Pathology Division, Agricultural Research Institute, Wufeng, Taichung, Taiwan
| | - J Y Liao
- Plant Pathology Division, Agricultural Research Institute, Wufeng, Taichung, Taiwan
| | - C A Chang
- Graduate Institute of Biochemical Science and Technology, Chaoyang University of Technology, Wufeng, Taichung, Taiwan
| | - C H Chiang
- Department of Molecular Biotechnology, Da-Yeh University, Changhua, Taiwan
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Hsu YF, Chou YY, Cheng YH. Spermatic cord myxoid liposarcoma presenting as an incarcerated inguinal hernia: report of a case and review of literatures. Hernia 2011; 16:719-22. [PMID: 21387152 DOI: 10.1007/s10029-011-0803-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2010] [Accepted: 02/11/2011] [Indexed: 11/29/2022]
Abstract
Incarcerated inguinal hernia is a common surgical indication in the emergency room. Delayed diagnosis can result in ischemic bowel or bowel perforation. The reported incarcerated contents include bowel loop, mesentery, omentum and, rarely, malignant lesions, such as lymphoma, metastatic tumors etc. We report a new case of primary spermatic cord liposarcoma presenting as emergent incarcerated inguinal hernia and review the related literature.
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Affiliation(s)
- Y-F Hsu
- Department of General Surgery, Shin Kong Wu Ho-Su Memorial Hospital, No. 95, Wen Chang Road, Shin Lin District, Taipei, 111, Taiwan
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McGrath C, Cheng YH, Lo ECM. Inequalities in oral health and oral health care delivery among adults in Hong Kong: an analysis of extant data. Hong Kong Med J 2011; 17 Suppl 2:35-37. [PMID: 21368334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023] Open
Affiliation(s)
- C McGrath
- Faculty of Dentistry, The University of Hong Kong, Hong Kong SAR, China.
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Cheng YH, Yang SH, Su WY, Chen YC, Yang KC, Cheng WTK, Wu SC, Lin FH. Thermosensitive chitosan-gelatin-glycerol phosphate hydrogels as a cell carrier for nucleus pulposus regeneration: an in vitro study. Tissue Eng Part A 2010; 16:695-703. [PMID: 19769528 DOI: 10.1089/ten.tea.2009.0229] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Injectable hydrogel is one of the great interests for tissue engineering and cell encapsulation. In the study, the gelatin molecules were added to the thermosensitive chitosan/beta-glycerol phosphate (C/GP) disodium salt hydrogels to form chitosan/gelatin/beta-glycerol phosphate (C/G/GP) disodium salt hydrogels which were applied as a cell carrier for nucleus pulposus (NP) regeneration. The gelation temperature, gelation time, and gel strength of the C/G/GP hydrogels were analyzed by the rheometer. NP cells were then harvested from the intervertebral discs of the adult New Zealand white rabbits and cultured in monolayer or in C/G/GP hydrogel, respectively. The cell viability, material-mediated cytotoxicity, cell proliferation, production of sulfated glycosaminoglycans, anabolic/catabolic gene expressions, and extracellular matrix-related gene expressions of the NP cells were demonstrated. The results show that the sol/gel transition temperature of the C/G/GP hydrogel was in the range of 31.1-33.8 degrees C at neutral pH value, the gelation time was shortened, and the gel strength also improved at body temperature when compared with the C/GP hydrogel. Among those, C/GP with 1% gelatin addition showed the most promising gelation time and gel strength and were utilized in the later experiments. From the results of cell activity, cytotoxicity, and cell proliferation assays, NP cells cultured in C/G/GP hydrogel had normal cell viability and cell proliferation that indicated the hydrogel was noncytotoxicity. The amounts of sulfated glycosaminoglycans of NP cells cultured in C/G/GP hydrogels were significantly higher than monolayer cultured. Considering the extracellular matrix-related gene expression, type II collagen and aggrecan of NP cells cultured in the hydrogels greatly increased than those in monolayer culture. On the contrary, the unfavorable gene expression, such as that of type I collagen, was decreased significantly. The results reveal that gelatin added into C/GP hydrogel significantly shortened the gelation time and improved the gel strength without influencing the biocompatibility. NP cells cultured in the C/G/GP hydrogel also displayed better gene expressions when compared with the monolayer culture. This study indicates that using chitosan/gelatin hydrogel for NP cell culture is feasible and may apply in minimal invasive intervertebral disc surgery in the future.
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Affiliation(s)
- Yung-Hsin Cheng
- Institute of Biomedical Engineering, College of Engineering and College of Medicine, National Taiwan University, Taipei, Taiwan
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