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Juang YP, Tsai JY, Gu WL, Hsu HC, Lin CL, Wu CC, Liang PH. Discovery of 5-Hydroxy-1,4-naphthoquinone (Juglone) Derivatives as Dual Effective Agents Targeting Platelet-Cancer Interplay through Protein Disulfide Isomerase Inhibition. J Med Chem 2024; 67:3626-3642. [PMID: 38381886 PMCID: PMC10945480 DOI: 10.1021/acs.jmedchem.3c02107] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/17/2024] [Accepted: 01/30/2024] [Indexed: 02/23/2024]
Abstract
In this study, a series of 2- and/or 3-substituted juglone derivatives were designed and synthesized. Among them, 9, 18, 22, 30, and 31 showed stronger inhibition activity against cell surface PDI or recombinant PDI and higher inhibitory effects on U46619- and/or collagen-induced platelet aggregation than juglone. The glycosylated derivatives 18 and 22 showed improved selectivity for inhibiting the proliferation of multiple myeloma RPMI 8226 cells, and the IC50 values reached 61 and 48 nM, respectively, in a 72 h cell viability test. In addition, 18 and 22 were able to prevent tumor cell-induced platelet aggregation and platelet-enhanced tumor cell proliferation. The molecular docking showed the amino acid residues Gln243, Phe440, and Leu443 are important for the compound-protein interaction. Our results reveal the potential of juglone derivatives to serve as novel antiplatelet and anticancer dual agents, which are available to interrupt platelet-cancer interplay through covalent binding to PDI catalytic active site.
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Affiliation(s)
- Yu-Pu Juang
- School
of Pharmacy, College of Medicine, National
Taiwan University, Taipei 100, Taiwan
| | - Ju-Ying Tsai
- Graduate
Institute of Natural Product, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Wan-Lan Gu
- School
of Pharmacy, College of Medicine, National
Taiwan University, Taipei 100, Taiwan
| | - Hui-Ching Hsu
- Graduate
Institute of Natural Product, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Chao-Lung Lin
- School
of Pharmacy, College of Medicine, National
Taiwan University, Taipei 100, Taiwan
| | - Chin-Chung Wu
- Graduate
Institute of Natural Product, Kaohsiung
Medical University, Kaohsiung 807, Taiwan
| | - Pi-Hui Liang
- School
of Pharmacy, College of Medicine, National
Taiwan University, Taipei 100, Taiwan
- The
Genomics Research Center, Academia Sinica, Taipei 128, Taiwan
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Kokossis D, Wei HJ, Gallitto M, Yoh N, McQuillan N, Tazhibi M, Berg X, Zhang X, Szalontay L, Gartrell R, Jovana P, Zhang Z, Molotkov A, Mintz A, Konofagou EE, Wu CC. Focused Ultrasound for Blood-Brain Barrier Opening and Delivery of Anti-PD1 in Diffuse Midline Gliomas. Int J Radiat Oncol Biol Phys 2023; 117:e523-e524. [PMID: 37785629 DOI: 10.1016/j.ijrobp.2023.06.1796] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
PURPOSE/OBJECTIVE(S) Diffuse midline glioma with H3K27 mutation is a fatal pediatric brain tumor, most commonly arising in the brainstem. This tumor remains universally fatal, despite a multitude of clinical trials, with a median overall survival of only 9-12 months. While immune-checkpoint inhibitors (ICIs) have transformed the treatment landscape of multiple solid tumors, delivery past the blood brain barrier (BBB) remains challenging. Programmed cell death protein 1 (PD1) is an immune checkpoint protein expressed on the surface of activated T cells; interaction with its ligand, PDL1, is tumor-protective, dampening T cell response. Recent phase I clinical trials have shown that ICIs targeting proteins along the PD1/PDL1 axis are well tolerated in patients with DMG; however, efficacy remains low. The blood-brain barrier (BBB) poses a major challenge to the efficacious delivery of therapeutic agents with large molecular size, such as anti-PD1. We hypothesize that BBB opening (BBBO) using focused ultrasound (FUS), a form of non-ionizing acoustic radiation, can enhance delivery and efficacy of anti-PD1 for treatment of DMG. MATERIALS/METHODS We established a syngeneic mouse DMG model with intracranial injection of cell line 4423 (PDGFB+, H3.3K27M, p53-/-). Magnetic resonance imaging (MRI) was utilized to evaluate BBBO and tumor progression. We measured delivery of anti-PD1 after BBBO using Western Blot and 3D in vivo optical fluorescent imaging/CT (OI/CT) of Cy7 labeled anti-PD1. RESULTS We demonstrate that delivery of anti-PD1 can be enhanced over 3.5-fold after reversible BBBO with FUS and concurrent microbubble administration. OI/CT revealed enhanced real-time antibody distribution peritumorally. Furthermore, we demonstrate that combined treatment of FUS and anti-PD1 led to benefit in local control of tumor growth using volumetric analysis of MRI. Preliminary survival studies suggest a positive trend for overall survival. CONCLUSION Our results support that FUS-mediated BBBO can increase treatment efficacy of anti-PD1 in a DMG murine model, due to improved targeted delivery to the tumoral region after systemic antibody administration. We consider these findings strong rationale for further investigation of the therapeutic effects of combinatorial treatment using FUS-mediated BBBO and ICIs for the treatment of DMG.
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Affiliation(s)
- D Kokossis
- Columbia University Irving Medical Center, New York, NY
| | - H J Wei
- Department of Radiation Oncology, Columbia University Irving Medical Center, New York, NY
| | - M Gallitto
- Department of Radiation Oncology, Columbia University Irving Medical Center, New York, NY
| | - N Yoh
- Department of Neurological Surgery, Columbia University Irving Medical Center, New York, NY
| | - N McQuillan
- Department of Radiation Oncology, Columbia University Irving Medical Center, New York, NY
| | | | - X Berg
- Columbia University Irving Medical Center, New York, NY
| | - X Zhang
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
| | - L Szalontay
- Department of Pediatrics Oncology, Columbia University Irving Medical Center, New York, NY
| | - R Gartrell
- Department of Pediatrics Oncology, Columbia University Irving Medical Center, New York, NY
| | - P Jovana
- Columbia University Irving Medical Center, New York, NY
| | - Z Zhang
- Department of Pediatrics, Columbia University Irving Medical Center, New York, NY
| | - A Molotkov
- Columbia University Irving Medical Center, New York, NY
| | - A Mintz
- Columbia University Irving Medical Center, New York, NY
| | - E E Konofagou
- Department of Biomedical Engineering, Columbia University, New York, NY
| | - C C Wu
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY
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Ahmed SHH, Gonda T, Agbadua OG, Girst G, Berkecz R, Kúsz N, Tsai MC, Wu CC, Balogh GT, Hunyadi A. Preparation and Evaluation of 6-Gingerol Derivatives as Novel Antioxidants and Antiplatelet Agents. Antioxidants (Basel) 2023; 12:antiox12030744. [PMID: 36978992 PMCID: PMC10045534 DOI: 10.3390/antiox12030744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/10/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023] Open
Abstract
Ginger (Zingiber officinale) is widely used as a spice and a traditional medicine. Many bioactivities have been reported for its extracts and the isolated compounds, including cardiovascular protective effects. Different pathways were suggested to contribute to these effects, like the inhibition of platelet aggregation. In this study, we synthesised fourteen 6-gingerol derivatives, including eight new compounds, and studied their antiplatelet, COX-1 inhibitor, and antioxidant activities. In silico docking of selected compounds to h-COX-1 enzyme revealed favourable interactions. The investigated 6-gingerol derivatives were also characterised by in silico and experimental physicochemical and blood-brain barrier-related parameters for lead and preclinical candidate selection. 6-Shogaol (2) was identified as the best overall antiplatelet lead, along with compounds 3 and 11 and the new compound 17, which require formulation to optimize their water solubility. Compound 5 was identified as the most potent antioxidant that is also promising for use in the central nervous system (CNS).
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Affiliation(s)
- Sara H H Ahmed
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
| | - Tímea Gonda
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
| | - Orinamhe G Agbadua
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
| | - Gábor Girst
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
| | - Róbert Berkecz
- Institute of Pharmaceutical Analysis, University of Szeged, H-6720 Szeged, Hungary
| | - Norbert Kúsz
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
| | - Meng-Chun Tsai
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - György T Balogh
- Institute of Pharmacodynamics and Biopharmacy, University of Szeged, H-6720 Szeged, Hungary
- Department of Chemical and Environmental Process Engineering, Budapest University of Technology and Economics, H-1111 Budapest, Hungary
| | - Attila Hunyadi
- Institute of Pharmacognosy, University of Szeged, H-6720 Szeged, Hungary
- Interdisciplinary Centre of Natural Products, University of Szeged, H-6720 Szeged, Hungary
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Wu HC, His HY, Hsiao G, Yen CH, Leu JY, Wu CC, Chang SH, Huang SJ, Lee TH. Chemical Constituents and Bioactive Principles from the Mexican Truffle and Fermented Products of the Derived Fungus Ustilago maydis MZ496986. J Agric Food Chem 2023; 71:1122-1131. [PMID: 36597352 DOI: 10.1021/acs.jafc.2c08149] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
To look in-depth into the traditional Mexican truffle, this study investigated the phytochemical and pharmacological properties of field-collected corn galls and the fermentate of its pathogen Ustilago maydis MZ496986. Here, we established the chemical profiles of both materials via the gradient HPLC-UV method and successfully identified six previously unreported chemical entities, ustilagols A-F (1-6), and 17 known components. Compounds 3, 5, and 9 exhibited potent nitric oxide production inhibitory activities in murine brain microglial BV-2 cells (IC50 = 6.7 ± 0.5, 5.8 ± 0.9, and 3.9 ± 0.1 μM) without cytotoxic effects. DIMBOA (9) also attenuates lipopolysaccharide (LPS)-stimulated NF-κB activation in RAW 264.7 macrophages (IC50 = 58.1 ± 7.2 μM). Ustilagol G (7) showed potent antiplatelet aggregation in U46619-stimulated human platelets (IC50 = 16.5 ± 5.3 μM). These findings highlighted the potential of corn galls and U. maydis MZ496986 fermentate as functional foods for improving inflammation-related discomforts and vascular obstruction.
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Affiliation(s)
- Ho-Cheng Wu
- Graduate Institute of Pharmacognosy, College of Pharmacy, Taipei Medical University, Taipei 110, R.O.C
- Ph.D. Program in Clinical Drug Development of Herbal Medicine, College of Pharmacy, Taipei Medical University, Taipei 110, R.O.C
| | - Hsiao-Yang His
- Institute of Fisheries Science, National Taiwan University, Taipei 106, R.O.C
| | - George Hsiao
- Graduate Institute of Medical Sciences and Department of Pharmacology, School of Medicine, College of Medicine, Taipei 110, R.O.C
| | - Chia-Hung Yen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, R.O.C
| | - Jyh-Yih Leu
- Department of Life Science, College of Science and Engineering, Fu Jen Catholic University, New Taipei City 242, R.O.C
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, R.O.C
| | - Szu-Hsing Chang
- Graduate Institute of Applied Science and Engineering, College of Science and Engineering, Fu-jen Catholic University, New Taipei 242, R.O.C
| | - Shu-Jung Huang
- Institute of Fisheries Science, National Taiwan University, Taipei 106, R.O.C
| | - Tzong-Huei Lee
- Institute of Fisheries Science, National Taiwan University, Taipei 106, R.O.C
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He JS, Duan JB, Li SC, Xiao ZL, Wang L, Li D, Ze F, Wu CC, Yuan CZ, Li XB. [Feasibility and safety of bridge therapy with active fixed electrodes connected to external permanent pacemakers for patients with infective endocarditis after lead removal and before permanent pacemaker implantation]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:1214-1219. [PMID: 36517443 DOI: 10.3760/cma.j.cn112148-20220523-00408] [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: 06/17/2023]
Abstract
Objective: To analyze the feasibility and safety of bridge therapy with active fixed electrodes connected to external permanent pacemakers (AFLEP) for patients with infective endocarditis after lead removal and before permanent pacemaker implantation. Methods: A total of 44 pacemaker-dependent patients, who underwent lead removal due to infective endocarditis in our center from January 2015 to January 2020, were included. According to AFLEP or temporary pacemaker option during the transition period, patients were divided into AFLEP group or temporary pacemaker group. Information including age, sex, comorbidities, indications and types of cardial implantable electionic device (CIED) implantation, lead age, duration of temporary pacemaker or AFLEP use, and perioperative complications were collected through Haitai Medical Record System. The incidence of pacemaker perception, abnormal pacing function, lead perforation, lead dislocation, lead vegetation, cardiac tamponade, pulmonary embolism, death and newly infection of implanted pacemaker were compared between the two groups. Pneumothorax, hematoma and the incidence of deep vein thrombosis were also analyzed. Results: Among the 44 patients, 24 were in the AFLEP group and 20 in the temporary pacemaker group. Age was younger in the AFLEP group than in the temporary pacemaker group (57.5(45.5, 66.0) years vs. 67.0(57.3, 71.8) years, P=0.023). Male, prevalence of hypertension, diabetes mellitus, chronic renal dysfunction and old myocardial infarction were similar between the two groups (all P>0.05). Lead duration was 11.0(8.0,13.0) years in the AFLEP group and 8.5(7.0,13.0) years in the temporary pacemaker group(P=0.292). Lead vegetation diameter was (8.2±2.4)mm in the AFLEP group and (9.1±3.0)mm in the temporary pacemaker group. Lead removal was successful in all patients. The follow-up time in the AFLEP group was 23.0(20.5, 25.5) months, and the temporary pacemaker group was 17.0(14.5, 18.5) months. In the temporary pacemaker group, there were 2 cases (10.0%) of lead dislocation, 2 cases (10.0%) of sensory dysfunction, 2 cases (10.0%) of pacing dysfunction, and 2 cases (10.0%) of death. In the AFLEP group, there were 2 cases of abnormal pacing function, which improved after adjusting the output voltage of the pacemaker, there was no lead dislocation, abnormal perception and death. Femoral vein access was used in 8 patients (40.0%) in the temporary pacemaker group, and 4 patients developed lower extremity deep venous thrombosis. There was no deep venous thrombosis in the AFLEP group. The transition treatment time was significantly longer in the AFLEP group than in the temporary pacemaker group (19.5(16.0, 25.8) days vs. 14.0(12.0, 16.8) days, P=0.001). During the follow-up period, there were no reinfections with newly implanted pacemakers in the AFLEP group, and reinfection occurred in 2 patients (10.0%) in the temporary pacemaker group. Conclusions: Bridge therapy with AFLEP for patients with infective endocarditis after lead removal and before permanent pacemaker implantation is feasible and safe. Compared with temporary pacemaker, AFLEP is safer in the implantation process and more stable with lower lead dislocation rate, less sensory and pacing dysfunction.
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Affiliation(s)
- J S He
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - J B Duan
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - S C Li
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - Z L Xiao
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - L Wang
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - D Li
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - F Ze
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - C C Wu
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - C Z Yuan
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - X B Li
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
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Duan JB, He JS, Wu CC, Wang L, Li D, Ze F, Zhou X, Yuan CZ, Yang DD, Li XB. [Safety and efficacy of high-power, short-duration superior vena cava isolation in combination with conventional radiofrequency ablation in patients with paroxysmal atrial fibrillation: a randomized controlled trial]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:1069-1073. [PMID: 36418274 DOI: 10.3760/cma.j.cn112148-20220501-00338] [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: For patients with paroxysmal atrial fibrillation, superior vena cava isolation on the basis of pulmonary vein isolation may further improve the long-term success rate of radiofrequency ablation. We aimed to explore the efficacy and safety of superior vena cava isolation by high-power and short-duration (HPSD) ablation plus conventional radiofrequency ablation (RA) in patients with paroxysmal atrial fibrillation. Methods: It was a prospective randomized controlled study. From January 1, 2019 to June 1, 2020, 180 patients who underwent radiofrequency ablation for paroxysmal atrial fibrillation in our center were consecutively screened. Patients were eligible if there was a trigger potential and the muscle sleeve length was greater than 3 cm. A total of 60 eligible patients were finally included and randomly divided into HPSD group (HPSD plus RA) and common power and duration (CPD) group (CPD plus RA) by random number table method (n=30 in each group). Efficacy was evaluated by ablation points, isolation time and ablation time. Safety was evaluated by the incidence of POP, cardiac tamponade, phrenic nerve injury, sinoatrial node injury and all-cause. Results: Superior vena cava isolation was achieved by 14 (13, 15) points in the HPSD group, which was significantly less than that in the CPD group (20(18, 22), P<0.001). The superior vena cava isolation time was 8 (7, 9) minutes in the HPSD group, which was significantly shorter than in the CPD group (17(14, 20) minutes, P<0.001). The average ablation time significantly shorter in HPSD group than in CPD group (78.0(71.1, 80.0) s vs. 200(167.5, 212.5)s, P<0.001). The average impedance drop was more significant in the HPSD group than in the CPD group (20.00(18.75, 21.00)Ω (and the percentage of impedance drop was 15%) vs. 12.00(11.75, 13.25)Ω (the percentage of impedance decrease was 12%), P<0.001). There was 1 POP (3.3%) in the HPSD group, and 3 POPs (10.0%) in the CPD group (P>0.05). There was no cardiac tamponade, phrenic nerve injury, sinoatrial node injury and death in both groups. Conclusions: HPSD technique for the isolation of superior vena cava is safe and effective in patients with paroxysmal atrial fibrillation undergoing conventional radiofrequency ablation.
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Affiliation(s)
- J B Duan
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - J S He
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - C C Wu
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - L Wang
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - D Li
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - F Ze
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - X Zhou
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - C Z Yuan
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - D D Yang
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
| | - X B Li
- Electrophysiology Lab of Cardiovascular Department, Peking University People's Hospital, Beijing 100044, China
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He JS, Duan JB, Li SC, Wang L, Li D, Ze F, Wu CC, Zhou X, Yuan CZ, Li XB. [Effect of Li's catheter in the cardiac resynchronization therapy implantation]. Zhonghua Xin Xue Guan Bing Za Zhi 2022; 50:799-804. [PMID: 35982013 DOI: 10.3760/cma.j.cn112148-20220309-00168] [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 effect of Li's catheter in cardiac resynchronization therapy (CRT) implantation. Methods: This study was a retrospective cohort study. Patients with indications for CRT implantation who visited the Department of Cardiology, Peking University People's Hospital from January 1, 2016 to January 1, 2022 were enrolled. Patients were divided into Li's catheter group (CRT implantation with Li's catheter) and control group (CRT implantation with the traditional method). The general clinical data of the patients were obtained through the electronic medical record system. Li's catheter is a new type of coronary sinus angiography balloon catheter independently developed by Dr. Li Xuebin (patent number: 201320413174.1). The primary outcome was the success rate of CRT device implantation, and the secondary outcomes included efficacy and safety parameters. Efficacy indicators included operation time, coronary sinus angiography time, left ventricular lead implantation time, X-ray exposure time, left ventricular lead threshold, and diaphragm stimulation. Safety outcomes included incidence of coronary sinus dissection, cardiac tamponade, and pericardial effusion. Results: A total of 170 patients were enrolled in this study, including 90 in Li's catheter group and 80 in control group. Age, male proportion of patients, proportion of patients with ischemic cardiomyopathy, hypertension, diabetes mellitus, chronic renal insufficiency, New York Heart Association (NYHA) functional classification, left ventricular ejection fraction, left ventricular end-diastolic diameter, proportion of left bundle branch block, and preoperative QRS wave width were similar between the two groups (all P>0.05). In Li's catheter group, 34 cases (37.8%) implanted with CRT defibrillators, and 28 cases (35.0%) implanted with CRT defibrillators in control group, the difference was not statistically significant (P=0.710). The success rate of CRT device implantation in Li's catheter group was 100% (90/90), which was significantly higher than that in control group (93.8%, 75/80, P=0.023).The operation time was 57.0 (52.0, 62.3) minutes, the time to complete coronary sinus angiography was 8.0 (6.0, 9.0) minutes, and the time of left ventricular electrode implantation was 8.0 (7.0, 9.0) minutes in Li's catheter group, and was 91.3 (86.3, 97.0), 18.0 (16.0, 20.0), 25.0 (22.0, 27.7) minutes respectively in control group, all significantly shorter in Li's catheter group (all P<0.05). The exposure time of X-ray was 15.0 (14.0, 17.0) minutes in Li's catheter group, which was also significantly shorter than that in control group (32.5 (29.0, 36.0) minutes, P<0.001). There was no coronary sinus dissection and cardiac tamponade in Li's catheter group, and 1 patient (1.1%) had diaphragmatic stimulation in Li's catheter group. In control group, 6 patients (6.7%) had coronary sinus dissection, and 1 patient (1.1%) developed pericardial effusion, and 3 patients (3.3%) had diaphragmatic stimulation. The incidence of coronary sinus dissection in Li's catheter group was significantly lower than that in control group (P=0.011). The postoperative left ventricular thresholds in Li's catheter group and control group were similar (1.80 (1.60, 2.38) V/0.5 ms vs. 1.80 (1.60, 2.40) V/0.5 ms, P=0.120). Conclusions: Use of Li's catheter is associated with higher success rate of CRT implantation, short time of coronary sinus angiography and left ventricular electrode implantation, reduction of intraoperative X-ray exposure, and lower incidence of coronary vein dissection in this patient cohort.
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Affiliation(s)
- J S He
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - J B Duan
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - S C Li
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - L Wang
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - D Li
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - F Ze
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - C C Wu
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - X Zhou
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - C Z Yuan
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - X B Li
- Electrophysiology Lab, Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
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Nakata M, Miwa, Wu CC, Chambers JK, Uchida K, Shiga, Nakayama H, Sasaki. Spontaneous intranasal tumours in degus (Octodon degus): 20 cases (2007-2020). J Small Anim Pract 2022; 63:829-833. [PMID: 35965417 DOI: 10.1111/jsap.13535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Revised: 04/04/2022] [Accepted: 06/14/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE The objective of this retrospective study was to describe the clinical and histopathological findings associated with intranasal tumours in degus. MATERIALS AND METHODS Medical records of degus diagnosed with intranasal neoplasms on histopathological examination between the years 2007 and 2020 at one hospital were included in the study. RESULTS MEDICAL RECORDS OF DEGUS Twenty degus (10 males and 10 females) were eligible for inclusion. Initial clinical signs included sneezing, abnormal nasal sounds, and nasal discharge, followed by anorexia and frequent nose rubbing. On radiography, 15 out of 20 animals showed space-occupying lesions in the nasal cavity. CT was performed in 16 animals and revealed various degrees of changes, including abnormal radiopacity within the nasal cavity and damaged nasal septum. Rhinostomy and excisional biopsy was performed in all 20 animals. Six out of 20 patients died during the perioperative period. Six and seven degus survived for 3 months and 1 year, respectively. One animal was lost to follow-up. In 16 cases the histological diagnosis was consistent with fibromas, while in 4 cases with osteomas. CLINICAL SIGNIFICANCE Intranasal neoplasms in degus are mostly benign mesenchymal tumours with various degrees of bone formation, which is unique to this animal species. This occurrence should be considered as an important differential diagnosis for upper respiratory tract disease in degus.
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Affiliation(s)
- M Nakata
- Miwa Exotic Animal Hospital, Tokyo, 170003, Japan.,VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - Miwa
- Miwa Exotic Animal Hospital, Tokyo, 170003, Japan.,VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - C C Wu
- Miwa Exotic Animal Hospital, Tokyo, 170003, Japan
| | - J K Chambers
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, 1138657, Japan
| | - K Uchida
- Laboratory of Veterinary Pathology, Graduate School of Agricultural and Life Science, The University of Tokyo, Tokyo, 1138657, Japan
| | - Shiga
- VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - H Nakayama
- VISION VETS GROUP Lab, Tokyo, 1510051, Japan
| | - Sasaki
- VISION VETS GROUP Lab, Tokyo, 1510051, Japan
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9
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Lin YT, Li Y, Hsu HC, Tsai JY, Lee JH, Tai CJ, Wu MJ, Wu CC. Discovery of 7, 4'-dimethoxy-3-hydroxyflavone as a protease-activated receptor 4 antagonist with antithrombotic activity and less bleeding tendency in mice. Biochem Pharmacol 2022; 202:115152. [PMID: 35752281 DOI: 10.1016/j.bcp.2022.115152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 05/31/2022] [Accepted: 06/17/2022] [Indexed: 11/29/2022]
Abstract
There is growing evidence of the importance of protease-activated receptor 4 (PAR4), one of thrombin receptors, as a therapeutic target in thrombotic cardiovascular diseases. In the present study, we utilized ligand-based virtual screening, bioassay, and structure-activity relationship study to discover PAR4 antagonists with new chemical scaffolds from natural origin, and examined their application as antiplatelet agents. By using these approaches, we have identified a flavonoid, 7, 4'-dimethoxy-3-hydroxyflavone, that exhibits anti-PAR4 activity. 7, 4'-Dimethoxy-3-hydroxyflavone inhibited PAR4-mediated human platelet aggregation, GPIIb/IIIa activation, and P-selectin secretion. Also, it inhibited PAR4 downstream signaling pathways, including Ca2+/protein kinase C, Akt, and MAP kinases ERK and p38, in human platelets, and suppressed PAR4-mediated β-arrestin recruitment in CHO-K1 cells exogenously expressed human PAR4. In a microfluidic system, 7, 4'-dimethoxy-3-hydroxyflavone reduced thrombus formation on collagen-coated chambers at an arterial shear rate in recalcified whole blood. Furthermore, mice treated with 7, 4'-dimethoxy-3-hydroxyflavone were significantly protected from FeCl3-induced carotid arterial occlusions, without significantly affecting tail bleeding time. In conclusion, 7, 4'-dimethoxy-3-hydroxyflavone represents a new class of nature-based PAR4 antagonist, it shows effective in vivo antithrombotic properties with less bleeding tendency, and could be a potential candidate for developing new antiplatelet agents.
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Affiliation(s)
- Ying-Ting Lin
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yu Li
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Hui-Ching Hsu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ju-Ying Tsai
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Jia-Hau Lee
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Chi-Jung Tai
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ming-Jung Wu
- Department of Chemistry, National Sun Yat-Sen University, Kaohsiung 804, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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10
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Chiang YC, Wu YS, Kang YF, Wang HC, Tsai MC, Wu CC. 3,5,2′,4′-Tetramethoxystilbene, a fully methylated resveratrol analog, prevents platelet aggregation and thrombus formation by targeting the protease-activated receptor 4 pathway. Chem Biol Interact 2022; 357:109889. [DOI: 10.1016/j.cbi.2022.109889] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 03/01/2022] [Accepted: 03/09/2022] [Indexed: 12/30/2022]
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11
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Wu CC, Li XB, Duan JB, He JS, Zhu TG, Yu C, Li D, Ze F, Guo JH, Wang L. [Value of D-dimer and left atrial size combined with CHA 2DS 2-VASc score in excluding left atrial thrombosis in patients with non-valvular atrial fibrillation]. Zhonghua Yi Xue Za Zhi 2021; 101:3938-3943. [PMID: 34954995 DOI: 10.3760/cma.j.cn112137-20210608-01303] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the related factors of thrombosis in patients with non-valvular atrial fibrillation (NVAF), and whether the combination of D-dimer, left atrial anteroposterior diameter and CHA2DS2-VASc score can be used to exclude left atrial thrombosis. Methods: A total of 75 NVAF patients with left atrial thrombosis confirmed by transesophageal echocardiography in Peking University People's Hospital from January 1, 2015 to December 31, 2019 were enrolled as the thrombus group. From January 1 to October 31, 2019, 80 patients with NVAF without left atrial thrombosis were enrolled as the control group. The clinical data, CHA2DS2-VASc score, hematological biomarkers, ultrasound data of two groups were compared. The independent factors associated with left atrial thrombosis were screened by univariate analysis and multivariate logistic regression analysis. The positive predictive value and negative predictive value for the diagnosis of left atrial thrombosis were gained by the score calculated based on the independent related factors. Results: There were no significant differences in age, gender, proportion of persistent atrial fibrillation and duration of atrial fibrillation between the two groups. The CHA2DS2-VASc score [M (Q1, Q3)] of the thrombus group was higher than that of the control group [2.5 (1.0, 3.0) vs 1.8 (1.0, 3.0), P=0.012]. The prothrombin time activity [M (Q1, Q3)] of the thrombus group was 81.1 (72.0, 93.0)%, which was lower than that of the control group 88.8 (83.0,96.0)% (P=0.008). The activated partial thromboplastin time (APTT) of the thrombus group was longer than that of the control group [(32.1±4.8) s vs (30.2±3.7) s, P=0.006]. D-dimer [M (Q1, Q3)] of the thrombus group was 231.0 (71.5, 272.2) ng/ml, which was higher than that of the control group 121.7 (49.0, 140.0) ng/ml (P<0.001). The left atrial anteroposterior diameter in thrombus group was larger [(44.6±6.6) mm vs (38.9±5.3) mm, P<0.001], the proportion of mitral regurgitation was higher (58.1% vs 26.8%, P<0.001). The left ventricular ejection fraction [M (Q1, Q3)] of the thrombus group was 56.7% (45.8%, 66.3%), which was lower than that of the control group 63.3% (60.5%, 70.2%) (P=0.003). Multivariate logistic regression analysis showed that the factor related to left atrial thrombosis was left atrial anteroposterior diameter (OR=4.480, 95%CI: 1.616-12.423). The negative predictive value of the new scoring system combined with D-dimer, left atrial anteroposterior diameter and CHA2DS2-VASc score for left atrial thrombosis was 100%. Conclusions: In NVAF patients, the factor independently associating with left atrial thrombosis is left atrial anteroposterior diameter. The combination of D-dimer, left atrial anteroposterior diameter, and CHA2DS2-VASc score can help exclude left atrial thrombosis before ablation of NVAF.
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Affiliation(s)
- C C Wu
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - X B Li
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - J B Duan
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - J S He
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - T G Zhu
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - C Yu
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - D Li
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - F Ze
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - J H Guo
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
| | - L Wang
- Department of Cardiology, Peking University People's Hospital, Beijing 100044, China
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12
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Tai CJ, Wu CC, Lee KT, Tseng TG, Wang HC, Chang FR, Yang YH. The Impact of Urate-Lowering Therapy in Post-Myocardial Infarction Patients: Insights from a Population-Based, Propensity Score-Matched Analysis. Clin Pharmacol Ther 2021; 111:655-663. [PMID: 34719019 PMCID: PMC9298734 DOI: 10.1002/cpt.2473] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 10/24/2021] [Indexed: 11/08/2022]
Abstract
The role of urate‐lowering therapy (ULT) for the primary prevention of cardiovascular (CV) events has been widely discussed, but its evidence for the secondary prevention of myocardial infarction (MI) is limited. Therefore, we conduct a population‐based, propensity score‐matched cohort study to investigate the CV outcomes among patients with post‐MI with and without ULT. A total of 19,042 newly diagnosed in‐hospital patients with MI were selected using the Taiwan National Health Insurance Database between January 1, 2005, and December 31, 2016. After 1:1 propensity score matching with covariates, patients with MI with (n = 963) and without (n = 963) ULT were selected for further analysis. The primary outcome was the all‐cause mortality and the secondary outcomes were composite CV outcomes, including hospitalization for recurrent MI, stroke, heart failure, and cardiac arrhythmias. ULT users were associated with lower all‐cause mortality (adjusted hazard ratio (adjHR), 0.67; 95% confidence interval (CI), 0.51–0.87) compared to the ULT nonusers. In addition, ULT users had a significantly lower risk of recurrent MI, which needed revascularization by percutaneous coronary intervention or coronary artery bypass grafting (adjHR, 0.67; 95% CI, 0.53–0.86) than the ULT nonusers. The primary and secondary outcomes were not different between patients with post‐MI who received uricosuric agents and xanthine oxidase inhibitors. The anti‐inflammatory effect of ULT plays an essential role in MI management. From a real‐world setting, this study shows that ULT is associated with the lower risk of all‐cause mortality in patients with post‐MI. In addition, the result shows the possible lower incidence of repeat revascularization procedures in the ULT users.
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Affiliation(s)
- Chi-Jung Tai
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan.,Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Family Medicine, Pingtung Hospital, Ministry of Health and Welfare, Pingtung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Kun-Tai Lee
- Cardiovascular Center, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Tzyy-Guey Tseng
- Department of Family Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan.,Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan.,Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yi-Hsin Yang
- School of Pharmacy, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, Taiwan.,National Institute of Cancer Research, National Health Research Institutes, Tainan, Taiwan
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13
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Purnomo KA, Korinek M, Tsai YH, Hu HC, Wang YH, Backlund A, Hwang TL, Chen BH, Wang SW, Wu CC, Chang FR. Decoding Multiple Biofunctions of Maca on Its Anti-allergic, Anti-inflammatory, Anti-thrombotic, and Pro-angiogenic Activities. J Agric Food Chem 2021; 69:11856-11866. [PMID: 34590863 DOI: 10.1021/acs.jafc.1c03485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Four active partition layers and ten isolates, including (5R)- and (5S)-macapyrrolidone A (1a, 1b), and four new alkaloids, (5R)- and (5S)-macapyrrolidone B (2a, 2b) and macapyrrolins D, E (3, 4), were isolated from maca (Lepidium meyenii Walp.), an indigenous food plant from Peru. Derived from the n-hexane layer, the macamide-rich fraction exhibited pro-angiogenic activity on EPC and HUVEC cells. Anti-thrombotic activity was displayed by the polar part of maca extracts (n-butanol and water layers). Both 75% methanol aq. (midlower polar part) and n-hexane (low polar part) layers, which showed signs of fatty acid content, markedly inhibited superoxide and elastase release in an anti-inflammatory assay. The 75% methanol aq. layer showed strong anti-allergic activity, and macapyrrolin A (5) was found active based on β-hexosaminidase release inhibition assays and a ChemGPS-NP experiment. These valuable bioactivity results suggest that maca is a food plant with good benefits for human health.
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Affiliation(s)
- Kartiko Arif Purnomo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Michal Korinek
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
| | - Yi-Hong Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Hao-Chun Hu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yi-Hsuan Wang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Anders Backlund
- Research Group Pharmacognosy, Department of Pharmaceutical Biochemistry, Uppsala University, BMC, Box 574, S-75123 Uppsala, Sweden
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
- Research Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic Safety, and Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33303, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital 33305 Taoyuan, Taiwan
| | - Bing-Hung Chen
- Department of Biotechnology, College of Life Science, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Shih-Wei Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Institute of Biomedical Sciences, MacKay Medical College, New Taipei City 25245, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City 25245, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medicine, MacKay Medical College, New Taipei City 25245, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
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14
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Ahrar K, Tam AL, Kuban JD, Wu CC. Imaging of the thorax after percutaneous thermal ablation of lung malignancies. Clin Radiol 2021; 77:31-43. [PMID: 34384562 DOI: 10.1016/j.crad.2021.07.007] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 07/22/2021] [Indexed: 01/25/2023]
Abstract
Image-guided thermal ablation is a minimally invasive treatment option for patients with early stage non-small cell lung cancer or metastatic disease to the lungs. Percutaneous ablation treats malignant tumours in situ, which precludes histopathological evaluation of the ablated tumours. Imaging studies are used as surrogates to assess technical and clinical success. Although it is not universally accepted, a common protocol for surveillance imaging includes contrast-enhanced computed tomography (CT) at 1, 3, 6, 9, 12, 18, 24 months, and yearly thereafter. Integrated 2-[18F]-fluoro-2-deoxy-d-glucose positron-emission tomography (PET)/CT imaging is recommended at 3 and 12 months and when recurrent disease is suspected. There is a complex evolution of the ablation zone on CT and PET imaging studies. The zone of ablation, initially larger than the ablated tumour, undergoes gradual involution. In the process, it may cavitate and resemble a lung abscess. Different contrast-enhancement and radionuclide uptake patterns in and around the ablation zone may indicate a wide range of diagnostic possibilities from a normal physiological response to local progression. Ultimately, the zone of ablation may be replaced by a variety of findings including linear bands of density, pleural thickening, or residual necrotic tumour. Diagnostic and interventional radiologists interpreting post-ablation imaging studies must have a clear understanding of the ablation process and imaging findings on surveillance studies. Accurate and timely recognition of complications and/or local recurrence is necessary to guide further therapy. The purpose of this article is to review imaging protocols and salient imaging findings after thermal ablation of lung malignancies.
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Affiliation(s)
- K Ahrar
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Centre, Houston, TX 77030, USA.
| | - A L Tam
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Centre, Houston, TX 77030, USA
| | - J D Kuban
- Department of Interventional Radiology, The University of Texas MD Anderson Cancer Centre, Houston, TX 77030, USA
| | - C C Wu
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Centre, Houston, TX 77030, USA
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15
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Rassiah P, Esiashvili N, Olch AJ, Hua CH, Ulin K, Molineu A, Marcus K, Gopalakrishnan M, Pillai S, Kovalchuk N, Liu A, Niyazov G, Peñagarícano JA, Cheung F, Olson AC, Wu CC, Malhotra H, MacEwan IJ, Faught J, Breneman JC, Followill DS, FitzGerald TJ, Kalapurakal JA. Practice patterns of pediatric total body irradiation techniques: A Children's Oncology Group survey. Int J Radiat Oncol Biol Phys 2021; 111:1155-1164. [PMID: 34352289 DOI: 10.1016/j.ijrobp.2021.07.1715] [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: 02/23/2021] [Revised: 06/30/2021] [Accepted: 07/28/2021] [Indexed: 12/25/2022]
Abstract
PURPOSE The aim of this study was to examine current practice patterns in pediatric total body irradiation (TBI) techniques among xxx member institutions. METHODS AND MATERIALS Between Nov 2019 and Feb 2020 a questionnaire, containing 52 questions related to the technical aspects of TBI was sent to medical physicists at 152 xxx institutions. The questions were designed to obtain technical information on commonly used TBI treatment techniques. Another set of 9 questions related to the clinical management of patients undergoing TBI was sent to 152 xxx member radiation oncologists at the same institutions. RESULTS Twelve institutions were excluded because TBI was not performed in their institutions. A total of 88 physicists from 88 institutions (63% response rate) and 96 radiation oncologists from 96 institutions responded (69% response rate). The AP/PA technique was the most common (49 institutions - 56%); 44 institutions (50%) used the lateral technique and 14 institutions (16%) used volumetric modulated arc therapy (VMAT)/Tomotherapy. Mid-plane dose rates of 6-15 cGy/min were most commonly used. The most common specification for lung dose was the mid lung dose for both AP/PA (71%) and lateral (63%) techniques. All physician responders agreed with the need to refine current TBI techniques and 79% supported the investigation of new TBI techniques to further lower the lung dose. CONCLUSION There is no consistency in the practice patterns, methods for dose measurement and reporting of TBI doses among xxx institutions. The lack of a standardization precludes meaningful correlation between TBI doses and clinical outcomes including disease control and normal tissue toxicity. The xxx radiation oncology discipline is currently undertaking several steps to standardize the practice and dose reporting of pediatric TBI using detailed questionnaires and phantom-based credentialing for all xxx centers.
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Affiliation(s)
- P Rassiah
- Department of Radiation Oncology, University of Utah, Salt Lake City, UT.
| | - N Esiashvili
- Department of Radiation Oncology, Emory University, Atlanta, GA
| | - A J Olch
- Department of Radiation Oncology, University of Southern California and Children's Hospital of Los Angeles, Los Angeles, CA
| | - C H Hua
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, TN
| | - K Ulin
- Imaging and Radiation Oncology Core, Rhode Island QA Center, University of Massachusetts Medical School, Lincoln, RI
| | - A Molineu
- Imaging and Radiation Oncology Core, Houston QA Center, MD Anderson Cancer Center, Houston, TX
| | - K Marcus
- Department of Radiation Oncology, Harvard Medical School, Boston, MA
| | - M Gopalakrishnan
- Department of Radiation Oncology, Northwestern University, Chicago, IL
| | - S Pillai
- Department of Radiation Medicine, Oregon Health and Science University, Portland, OR
| | - N Kovalchuk
- Department of Radiation Oncology, Stanford University, Stanford, CA
| | - A Liu
- Department of Radiation Oncology, City of Hope, Los Angeles, CA
| | - G Niyazov
- Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, NY
| | - J A Peñagarícano
- Department of Radiation Oncology, H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - F Cheung
- Medical Physics division, Princess Margaret Cancer Center, Toronto, Canada
| | - A C Olson
- Department of Radiation Oncology, Children's Hospital of Pittsburgh, UPMC Hillman Cancer Center, University of Pittsburgh School of Medicine Pittsburgh, PA
| | - C C Wu
- Department of Radiation Oncology, Columbia University Irving Medical Center, New York, NY
| | - H Malhotra
- Department of Radiation Medicine, Roswell Park Comprehensive Cancer Center, Buffalo, NY
| | - I J MacEwan
- Department of Radiation Medicine and Applied Sciences, UC San Diego, La Jolla, CA
| | - J Faught
- Department of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, TN
| | - J C Breneman
- Department of Radiation Oncology, University of Cincinnati, Cincinnati, OH
| | - D S Followill
- Imaging and Radiation Oncology Core, Houston QA Center, MD Anderson Cancer Center, Houston, TX
| | - T J FitzGerald
- Department of Radiation Oncology, University of Massachusetts, Worcester, MA
| | - J A Kalapurakal
- Department of Radiation Oncology, Northwestern University, Chicago, IL
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16
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Ahuja J, de Groot PM, Shroff GS, Strange CD, Vlahos I, Rajaram R, Truong MT, Wu CC. The postoperative chest in lung cancer. Clin Radiol 2021; 77:6-18. [PMID: 34154835 DOI: 10.1016/j.crad.2021.05.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 05/05/2021] [Indexed: 12/17/2022]
Abstract
Most of the complications following lung cancer surgery occur in the early postoperative period and can result in significant morbidity and mortality. Delayed complications can also occur. Diagnosing these complications can be challenging because clinical manifestations are non-specific. Imaging plays an important role in detecting these complications in a timely manner and facilitates prompt interventions. Hence, it is important to have knowledge of the expected anatomical alterations following lung cancer surgeries, and the spectrum of post-surgical complications and their respective imaging findings to avoid misinterpretations or delay in diagnosis.
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Affiliation(s)
- J Ahuja
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - P M de Groot
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - G S Shroff
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C D Strange
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - I Vlahos
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - R Rajaram
- Department of Thoracic and Cardiovascular Surgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - M T Truong
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C C Wu
- Department of Thoracic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
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17
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Chang CC, Li CY, Tsai YH, El-Shazly M, Wei CK, Yang ZJ, Chen SL, Wu CC, Wu YC, Chang FR. Bioactive polyketides from the pathogenic fungus of Epicoccum sorghinum. Planta 2021; 253:116. [PMID: 33956231 DOI: 10.1007/s00425-021-03635-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 02/06/2021] [Accepted: 04/24/2021] [Indexed: 06/12/2023]
Abstract
We discovered and identified a series of characteristic substances, including one new polyketide, epicorepoxydon B, of the important pathogenic fungus, Epicoccum sorghinum, of sorghum. The fungal extract and some isolated polyketides are sensitive to a malignant triple-negative breast cancer cell line, MDA-MB-231. Sorghum (Kaoliang) grain is an important crop with high economic value and several applications. In Taiwan, sorghum has been used in the wine industry, and "Kinmen Kaoliang Liquor" is a well-known Asian brand. Fungal contamination is one of the major threats affecting the production of sorghum grain resulting in economic losses as well as human and animal health problems. Several fungal species can infect sorghum grain and generate some toxic secondary metabolites. Epicoccum sorghinum is one of the major fungal contaminants of sorghum grains and a potent producer of mycotoxins such as tenuazonic acid (TeA). However, except for TeA, few studies focused on chemical compounds produced by this fungus. To explore the potential biological and toxic effects of E. sorghinum, a chemical investigation was carried out on the ethyl acetate extract of the fungus because it showed cytotoxic activity against a triple-negative breast cancer cell line, MDA-MB-231 (54.82% inhibition at 20 µg/mL). One new polyketide, epicorepoxydon B (1), along with six known compounds including 4,5-dihydroxy-6-(6'-methylsalicyloxy)-2-hydroxymethyl-2-cyclohexenl-one (2), epicorepoxydon A (3), 3-hydroxybenzyl alcohol (4), 6-methylsalicylic acid (5), gentisyl alcohol (6), and 6-(hydroxymethyl)benzene-1,2,4-triol (7) were obtained, and their structures were established by the interpretation of their MS and NMR spectroscopic data. The cytotoxic activity of all isolated polyketides 1-7 was evaluated, and compounds 2, 6, and 7 exhibited potent activities against A549, HepG2, and MDA-MB-231 human cancer cell lines with IC50 value ranging from 1.86 to 18.31 μM. The structure-activity relationship of the isolated compounds was proposed.
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Affiliation(s)
- Ching-Chia Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chi-Ying Li
- Department of Pharmacology and Pharmaceutical Sciences, School of Pharmacy, University of Southern California, 1985 Zonal Avenue, Los Angeles, CA, 90089, USA
| | - Yi-Hong Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Mohamed El-Shazly
- Department of Pharmacognosy, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, 11566, Cairo, Egypt
- Department of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, The German University in Cairo, Cairo, 11835, Egypt
| | - Chien-Kei Wei
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Zih-Jie Yang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Shu-Li Chen
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan
| | - Yang-Chang Wu
- Graduate Institute of Integrated Medicine, China Medical University, Taichung, 404, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung, 404, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, 807, Taiwan.
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, 804, Taiwan.
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18
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Hsieh KY, Tsai JY, Lin YH, Chang FR, Wang HC, Wu CC. Golden berry 4β-hydroxywithanolide E prevents tumor necrosis factor α-induced procoagulant activity with enhanced cytotoxicity against human lung cancer cells. Sci Rep 2021; 11:4610. [PMID: 33633307 PMCID: PMC7907079 DOI: 10.1038/s41598-021-84207-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 01/27/2021] [Indexed: 12/21/2022] Open
Abstract
Inflammation in the tumor microenvironment is positively correlated with cancer progression and metastasis as well as the risk of thromboembolism in lung cancer patients. Here we show, in human non-small cell lung cancer (NSCLC) cell lines, the master inflammatory cytokine tumor necrosis factor (TNF-α) induced tissue factor expression and procoagulant activity, and these effects were potently inhibited by 4β-hydroxywithanolide E (4HW), a natural compound isolated from Physalis peruviana. Furthermore, combination of 4HW and TNF-α caused synergistic cytotoxicity against NSCLC cells by inducing caspase-dependent apoptosis. The underlying mechanism by which 4HW reverses the procoagulant effect of TNF-α but enhances its cytotoxic effect appears to be due to inhibition of NF-κB, which is a key switch for both inflammation-induced coagulation and cell survival. Our results suggest that 4HW may have a potential application for treating inflammation-derived cancer progression and cancer-associated hypercoagulable state.
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Affiliation(s)
- Kan-Yen Hsieh
- Graduate Institute of Natural Products, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ju-Ying Tsai
- Graduate Institute of Natural Products, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ya-Han Lin
- Graduate Institute of Natural Products, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan. .,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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19
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Kao CC, Kung PH, Tai CJ, Tsai MC, Cheng YB, Wu CC. Juglone prevents human platelet aggregation through inhibiting Akt and protein disulfide isomerase. Phytomedicine 2021; 82:153449. [PMID: 33387969 DOI: 10.1016/j.phymed.2020.153449] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 11/24/2020] [Accepted: 12/22/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND/PURPOSE Juglone, a natural compound widely found in Juglandaceae plants, has been suggested as a potential drug candidate for treating cancer, inflammation, and diabetic vascular complications. In the present study, the antiplatelet effect and underlying mechanisms of juglone were investigated for the first time. STUDY DESIGN/METHODS Human platelet aggregation and activation were measured by turbidimetric aggregometry, flow cytometry, and Western blotting. In vitro antithrombotic activity of juglone was assessed using collagen-coated flow chambers under whole-blood flow conditions. The effect of juglone on protein disulfide isomerase (PDI) activity was determined by the dieosin glutathione disulfide assay. RESULTS Juglone (1 - 5 μM) inhibited platelet aggregation and glycoprotein (GP) IIb/IIIa activation caused by various agonists. In a whole blood flow chamber system, juglone reduced thrombus formation on collagen-coated surfaces under arterial shear rates. Juglone abolished intracellular Ca2+ elevation and protein kinase C activation caused by collagen, but had no significant effect on that induced by G protein-coupled receptor agonists. In contrast, Akt activation caused by various agonists were inhibited in juglone-treated platelets. Additionally, juglone showed inhibitory effects on both recombinant human PDI and platelet surface PDI at concentrations similar to those needed to prevent platelet aggregation. CONCLUSION Juglone exhibits potent in vitro antiplatelet and antithrombotic effects that are associated with inhibition of Akt activation and platelet surface PDI activity.
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Affiliation(s)
- Ching-Chieh Kao
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Po-Hsiung Kung
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chi-Jung Tai
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Family Medicine, Pingtung Hospital, Ministry of Health and Welfare, Pingtung, Taiwan
| | - Meng-Chun Tsai
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yuan-Bin Cheng
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan; Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan.
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20
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Li CY, Chang CC, Tsai YH, El-Shazly M, Wu CC, Wang SW, Hwang TL, Wei CK, Hohmann J, Yang ZJ, Cheng YB, Wu YC, Chang FR. Anti-inflammatory, Antiplatelet Aggregation, and Antiangiogenesis Polyketides from Epicoccum sorghinum: Toward an Understating of Its Biological Activities and Potential Applications. ACS Omega 2020; 5:11092-11099. [PMID: 32455230 PMCID: PMC7241018 DOI: 10.1021/acsomega.0c01000] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Accepted: 04/24/2020] [Indexed: 05/28/2023]
Abstract
The ethyl acetate extract of an endophyte Epicoccum sorghinum exhibited anti-inflammatory activity at a concentration of <10 μg/mL. By bioassay-guided fractionation, one new compound, named epicorepoxydon A (1), and one unusual bioactive compound, 6-(hydroxymethyl)benzene-1,2,4-triol (6), together with six known compounds, were isolated from E. sorghinum. The structures of all isolates were established by spectroscopic analyses. The relative configuration of 1 was deduced by the NOESY spectrum and its absolute configuration was determined by X-ray single-crystal analysis. The biological activities of all isolates were evaluated using four types of bioassays including cytotoxicity, anti-inflammatory, antiplatelet aggregation, and antiangiogenesis activities. Compounds 4 and 6 showed potent anti-inflammatory activity, compound 2 possessed potent antiplatelet aggregation and antiangiogenesis activities, and compound 6 demonstrated antiangiogenesis activity. This fungal species can cause a human hemorrhagic disorder known as onyalai. In this study, we identified the active components with antiplatelet aggregation and antiangiogenesis activities, which may be related to the hemorrhagic disorder caused by this fungus. Moreover, we proposed a biosynthetic pathway of the isolated polyketide secondary metabolites and investigated their structure-activity relationship (SAR). Our results suggested that E. sorghinum is a potent source of biologically active compounds that can be developed as antiplatelet aggregation and anti-inflammatory agents.
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Affiliation(s)
- Chi-Ying Li
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Ching-Chia Chang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yi-Hong Tsai
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Mohamed El-Shazly
- Department
of Pharmacognosy, Faculty of Pharmacy, Ain-Shams
University, Organization of African Unity Street, Abassia, Cairo 11566, Egypt
- Department
of Pharmaceutical Biology, Faculty of Pharmacy and Biotechnology, German University in Cairo, Cairo 11835, Egypt
| | - Chin-Chung Wu
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Shih-Wei Wang
- Department
of Medicine, Mackay Medical College, New Taipei City 252, Taiwan
| | - Tsong-Long Hwang
- Graduate
Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
- Research
Center for Chinese Herbal Medicine, Research Center for Food and Cosmetic
Safety, and Graduate Institute of Health Industry Technology, College
of Human Ecology, Chang Gung University
of Science and Technology, Taoyuan 333, Taiwan
- Department
of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Chien-Kei Wei
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Judit Hohmann
- Department
of Pharmacognosy, Interdisciplinary Excellence Center, University of Szeged, H-6720 Szeged, Hungary
- Interdisciplinary
Centre for Natural Products, University
of Szeged, H-6720 Szeged, Hungary
| | - Zih-Jie Yang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yuan-Bin Cheng
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Yang-Chang Wu
- Graduate
Institute of Integrated Medicine, China
Medical University, Taichung 404, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan
| | - Fang-Rong Chang
- Graduate
Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Drug Development and Value Creation Research Center, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung
Medical University Hospital, Kaohsiung Medical
University, Kaohsiung 807, Taiwan
- Department
of Marine Biotechnology and Resources, National
Sun Yat-sen University, Kaohsiung 804, Taiwan
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21
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Mitchell KG, Nelson DB, Corsini EM, Vaporciyan AA, Antonoff MB, Mehran RJ, Rice DC, Roth JA, Sepesi B, Walsh GL, Bhutani MS, Maru DM, Wu CC, Nguyen QN, Ajani JA, Swisher SG, Hofstetter WL. Morbidity following salvage esophagectomy for squamous cell carcinoma: the MD Anderson experience. Dis Esophagus 2020; 33:5532833. [PMID: 31313820 DOI: 10.1093/dote/doz067] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 06/05/2019] [Accepted: 06/25/2019] [Indexed: 12/11/2022]
Abstract
The survival advantage associated with the addition of surgical therapy in esophageal squamous cell carcinoma (ESCC) patients who demonstrate a complete clinical response to chemoradiotherapy is unclear, and many institutions have adopted an organ-preserving strategy of selective surgery in this population. We sought to characterize our institutional experience of salvage esophagectomy (for failure of definitive bimodality therapy) and planned esophagectomy (as a component of trimodality therapy) by retrospectively analyzing patients with ESCC of the thoracic esophagus and GEJ who underwent esophagectomy following chemoradiotherapy between 2004 and 2016. Of 76 patients who met inclusion criteria, 46.1% (35) underwent salvage esophagectomy. Major postoperative complications (major cardiovascular and pulmonary events, anastomotic leak [grade ≥ 2], and 90-day mortality) were frequent and occurred in 52.6% of the cohort (planned resection: 36.6% [15/41]; salvage esophagectomy: 71.4% [25/35]). Observed rates of 30- and 90-day mortality for the entire cohort were 7.9% (planned: 7.3% [3/41]; salvage: 8.6% [3/35]) and 13.2% (planned: 9.8% [4/41]; salvage: 17.1% [6/35]), respectively. In summary, esophagectomy following chemoradiotherapy for ESCC at our institution has been associated with frequent postoperative morbidity and considerable rates of mortality in both planned and salvage settings. Although a selective approach to surgery may permit organ preservation in many patients with ESCC, these results highlight that salvage esophagectomy for failure of definitive-intent treatment of ESCC may also constitute a difficult clinical undertaking in some cases.
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Affiliation(s)
- K G Mitchell
- Department of Thoracic and Cardiovascular Surgery
| | - D B Nelson
- Department of Thoracic and Cardiovascular Surgery
| | - E M Corsini
- Department of Thoracic and Cardiovascular Surgery
| | | | - M B Antonoff
- Department of Thoracic and Cardiovascular Surgery
| | - R J Mehran
- Department of Thoracic and Cardiovascular Surgery
| | - D C Rice
- Department of Thoracic and Cardiovascular Surgery
| | - J A Roth
- Department of Thoracic and Cardiovascular Surgery
| | - B Sepesi
- Department of Thoracic and Cardiovascular Surgery
| | - G L Walsh
- Department of Thoracic and Cardiovascular Surgery
| | - M S Bhutani
- Department of Gastroenterology Hepatology and Nutrition
| | | | - C C Wu
- Department of Diagnostic Radiology
| | | | - J A Ajani
- Department of Gastrointestinal Medical Oncology, University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - S G Swisher
- Department of Thoracic and Cardiovascular Surgery
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22
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Lin YC, Ko YC, Hung SC, Lin YT, Lee JH, Tsai JY, Kung PH, Tsai MC, Chen YF, Wu CC. Selective Inhibition of PAR4 (Protease-Activated Receptor 4)-Mediated Platelet Activation by a Synthetic Nonanticoagulant Heparin Analog. Arterioscler Thromb Vasc Biol 2020; 39:694-703. [PMID: 30727756 DOI: 10.1161/atvbaha.118.311758] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective- PAR4 (protease-activated receptor 4), one of the thrombin receptors in human platelets, has emerged as a promising target for the treatment of arterial thrombotic disease. Previous studies implied that thrombin exosite II, known as a binding site for heparin, may be involved in thrombin-induced PAR4 activation. In the present study, a heparin octasaccharide analog containing the thrombin exosite II-binding domain of heparin was chemically synthesized and investigated for anti-PAR4 effect. Approach and Results- PAR4-mediated platelet aggregation was examined using either thrombin in the presence of a PAR1 antagonist or γ-thrombin, which selectively activates PAR4. SCH-28 specifically inhibits PAR4-mediated platelet aggregation, as well as the signaling events downstream of PAR4 in response to thrombin. Moreover, SCH-28 prevents thrombin-induced β-arrestin recruitment to PAR4 but not PAR1 in Chinese Hamster Ovary-K1 cells using a commercial enzymatic complementation assay. Compared with heparin, SCH-28 is more potent in inhibiting PAR4-mediated platelet aggregation but has no significant anticoagulant activity. In an in vitro thrombosis model, SCH-28 reduces thrombus formation under whole blood arterial flow conditions. Conclusions- SCH-28, a synthetic small-molecular and nonanticoagulant heparin analog, inhibits thrombin-induced PAR4 activation by interfering with thrombin exosite II, a mechanism of action distinct from other PAR4 inhibitors that target the receptor. The characteristics of SCH-28 provide a new strategy for targeting PAR4 with the potential for the treatment of arterial thrombosis.
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Affiliation(s)
- Yu-Chuan Lin
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Yen-Chun Ko
- Genomics Research Center, Academia Sinica, Taipei, Taiwan (Y.-C.K., S.-C.H.)
| | - Shang-Cheng Hung
- Genomics Research Center, Academia Sinica, Taipei, Taiwan (Y.-C.K., S.-C.H.)
| | - Ying-Ting Lin
- Department of Biotechnology, College of Life Science (Y.-T.L., J.-H.L.), Kaohsiung Medical University, Taiwan
| | - Jia-Hau Lee
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan.,Department of Biotechnology, College of Life Science (Y.-T.L., J.-H.L.), Kaohsiung Medical University, Taiwan
| | - Ju-Ying Tsai
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Po-Hsiung Kung
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Meng-Chun Tsai
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Yih-Fung Chen
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan
| | - Chin-Chung Wu
- From the Graduate Institute of Natural Products (Y.-C.L., J.-H.L., J.-Y.T., P.-H.K., M.-C.T., Y.-F.C., C.-C.W.), Kaohsiung Medical University, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Taiwan (C.-C.W.).,Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan (C.-C.W.)
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23
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Abstract
T cells and dendritic cells (DCs) that are positive for the tissue-resident marker CD103 play a vital role in antitumor immunity. In this study, multiplexed immunohistochemistry was applied to stain CD103 and the T-cell marker CD8 as well as the DC marker CD11c on formalin-fixed, paraffin-embedded oral squamous cell carcinoma (OSCC) tissues. Then, the density of CD103+CD8+ and CD103+CD11c+ tumor-infiltrating lymphocytes (TILs) in the intratumoral and stromal regions was calculated, and the correlation of CD103+CD8+ TIL and CD103+CD11c+ TIL density with OSCC patient prognosis was analyzed. The results revealed that CD103+CD8+ TILs and CD103+CD11c+ TILs were abundant in the stromal region and that increased stromal CD103+CD8+ TIL and intratumoral CD103+CD11c+ TIL density indicated a favorable prognosis. Moreover, we freshly isolated TILs from OSCC samples and performed flow cytometry to verify that CD103+CD8+ TILs display a tissue-resident memory T-cell (Trm) phenotype, and we discriminated CD103+CD11c+ TILs from tumor-associated macrophages.
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Affiliation(s)
- Y Xiao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - H Li
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - L Mao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Q C Yang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - L Q Fu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - C C Wu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - B Liu
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Oral Maxillofacial-Head Neck Oncology, School and Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Z J Sun
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST) and Key Laboratory of Oral Biomedicine Ministry of Education, School and Hospital of Stomatology, Wuhan University, Wuhan, China.,Department of Oral Maxillofacial-Head Neck Oncology, School and Hospital of Stomatology, Wuhan University, Wuhan, China
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24
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Hsuan CF, Lin FJ, Tseng WK, Wu YW, Yin WH, Yeh HI, Chen JW, Wu CC. P6428The waist-to-body mass index ratio is a better predictor for cardiovascular outcome in patients with established atherosclerotic cardiovascular disease - No u-shaped phenomenon. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.1022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
Background
Many studies have observed an “obesity paradox” in patients with established atherosclerotic cardiovascular disease (ASCVD), in which the body mass index (BMI)-mortality curve is U-shaped.
Purpose
To search a better anthropometric parameter to predict the cardiovascular events in patients with ASCVD.
Methods
The study was conducted from the Taiwanese Secondary Prevention for patients with AtheRosCLErotic disease (T-SPARCLE) Registry. Adult patients with stable ASCVD were enrolled. The primary composite endpoint of this study is the time of the first major cardiovascular event, defined as cardiovascular death, nonfatal myocardial infarction or stroke, or cardiac arrest with resuscitation. Dose response association between primary outcome events and various traditional anthropometric parameters and a new parameter, the waist-to-BMI ratio, was examined using the Cox proportional hazards regression model. We used restricted cubic spline regression to investigate the potential nonlinear relationship between each anthropometric measure and primary outcome events.
Results
A total of 6921 patients with ASCVD were included in this analysis, and were followed up for a median of 2.5 years. Multivariable Cox proportional hazards regression showed a significant positive association between the waist-to-BMI ratio and the primary outcome events (adjusted hazard ratio 1.67, 95% CI 1.12–2.49, p=0.01). Other traditional anthropometric parameters, such as BMI, weight, waist and waist-hip ratio, did not showed significant associations (p=0.10, 0.31, 0.90, and 0.52, respectively). In the restricted cubic spline regression, the positive dose response association between the primary outcome and the waist-to-BMI ratio persisted across all the waist-to-BMI ratio, and was non-linear (the likelihood ratio test for nonlinearity was statistically significant, p<0.001) with a much steeper increase in the major cardiovascular event for the waist-to-BMI ratio >3.6 cm m2/kg.
Dose response curve of waist/BMI ratio
Conclusion
This study found the waist-to-BMI ratio to be a better predictor for major adverse cardiovascular events in established ASCVD patients than other traditional anthropometric parameters.
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Affiliation(s)
- C F Hsuan
- E-Da Dachang Hospital, Division of Cardiology, Department of Internal Medicaine, Kaohsiung, Taiwan
| | - F J Lin
- National Taiwan University, Graduate Institute of Clinical Pharmacy, Taipei, Taiwan
| | - W K Tseng
- E-Da Hospital, Division of Cardiology, Department of Internal Medicaine, Kaohsiung, Taiwan
| | - Y W Wu
- Far Eastern Memorial Hospital, Department of Cardiology, New Taipei City, Taiwan
| | - W H Yin
- Cheng-Hsin General Hospital, Division of Cardiology, Heart Center, Taipei, Taiwan
| | - H I Yeh
- Mackay Memorial Hospital, Cardiology, Taipei, Taiwan
| | - J W Chen
- Taipei Veterans General Hospital, Department of Medical Research and Education, Taipei, Taiwan
| | - C C Wu
- National Taiwan University Hospital, Division of Cardiology, Department of Internal Medicain, Taipei, Taiwan
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25
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Yan GS, Li LL, Jiang SL, Meng S, Wu CC. [Clinical study of different adsorbents with dual plasma molecular adsorption system in the treatment of hepatic failure]. Zhonghua Gan Zang Bing Za Zhi 2019; 27:51-55. [PMID: 30685924 DOI: 10.3760/cma.j.issn.1007-3418.2019.01.011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Objective: To investigate the effects of two different sorbents(Carbon perfusion apparatus and Resin perfusion apparatus)in Double plasma molecular absorb syetem for liver failure treatment. Methods: A total of 152 cases with liver failure who were admitted to The Sixth People's Hospital of Zhengzhou, from June 2016 to May 2018 were selected and divided into DPMARS Carbon group (77 cases) and Resin group (75 cases). The two groups were observed in terms of liver function, prothrombin activity(PTA),Plasma albumin ,tumor necrosis factor alpha and interleukin-6 were detected and compared between the two groups before and after treatment. Results: ①The clinical symptoms improved in different degree in two groups, the recovery rate of Carbon cans Carbon perfusion apparatus group and Resin group separately were89.6% (69/77)、90.7% (68/75)(χ(2) = 0.048, P = 0.975), there were no statistical differences. There were no statistical differences between the two groups in untoward reactions(χ(2) = 0.235, P = 0.995), ②Compared with before treatment, TBil(t = 3.735, 3.728; P = 0.000, 0.000)、ALT(t = 5.117, 5.203; P = 0.000, 0.000)、TNF-α (t = 3.158, 3.094; P = 0.000, 0.002)、IL-6(t = 3.647, 3.559; P = 0.002, 0.003)decreased and ALB (t = 2.300, 3.065; P = 0.024, 0.003) increased significantly after treatment in both groups, and there were statistical differences. There were no signifiant differences in the changes in ALB(t = 0.316, 0.209; P = 0.657, 0.720) and PTA(t = 0.810, 0.843; P = 0.429, 0.516). ③After treatment, there were no signifiant differences in the changes in TBil、ALT、ALB、PTA、TNF-α、IL-6(t = 0.377、0.904、-1.133、-1.552、0.841、0.401; P = 0.952、0.283、0.826、0.094、0.154、0.457). Conclusion: Double plasma molecular absorb syetem is effective in treating liver failure. Carbon perfusion apparatus or Resin perfusion apparatus can be combined with Specific bilirubin adsorption column for DPMARS in clinical treatment,and their effects are similar.
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Affiliation(s)
- G S Yan
- Department of Blood Purification, the Sixth People's Hospital of Zhengzhou, Zhengzhou 450000, China
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Wang HC, Hu HH, Chang FR, Tsai JY, Kuo CY, Wu YC, Wu CC. Different effects of 4β-hydroxywithanolide E and withaferin A, two withanolides from Solanaceae plants, on the Akt signaling pathway in human breast cancer cells. Phytomedicine 2019; 53:213-222. [PMID: 30668401 DOI: 10.1016/j.phymed.2018.09.017] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [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: 08/03/2017] [Revised: 08/02/2018] [Accepted: 09/03/2018] [Indexed: 06/09/2023]
Abstract
BACKGROUND Triple-negative breast cancer (TNBC) represents a clinical challenge because it lacks sensitivity to hormone therapy or other available molecule-targeted agents. In addition, TNBC frequently exhibits over-activation of the PI3K/Akt survival pathway that can contribute to chemotherapy resistance. 4β-Hydroxywithanolide E (4-HW) and withaferin A (WA) are two withanolides from Solanaceae plants that exhibit promising anticancer activity in vitro and in vivo. PURPOSE The aim of this study is to investigate and compare the effects of 4-HW and WA on TNBC cells and underling mechanisms. STUDY DESIGN/METHODS The anticancer effects of 4-HW and WA were evaluated by cell viability, cell cycle arrest, and apoptosis assays. PI3K/Akt signaling and the expression of survivin, Bcl-2 family proteins and cyclin-dependent kinase inhibitors were evaluated by Western blot. The role of PI3K/Akt signaling in the withanolides-induced anticancer effects was examined by using a PI3K inhibitor and overexpression of a constitutively active form of Akt. RESULTS In TNBC MDA-MB-231 cells, 4-HW and WA displayed different kinetic effect on cell availability. Cell cycle analysis revealed that 4-HW induced the G1-phase arrest while WA caused the G2/M-phase block. Both withanolides induced apoptosis, but WA also caused necrosis. 4-HW inhibited the PI3K/Akt pathway and survivin expression as well as up-regulated the cyclin-dependent kinase inhibitors p21 and p27. In contrast, WA is a more potent inhibitor of Hsp90 and elicited Akt activation at low doses but inhibited Akt signaling at higher doses by depleting the Akt protein. The PI3K inhibitor LY294002 mimicked the effects of 4-HW and potentiated the cytotoxic activity of WA. In contrast, overexpressing a constitutively active form of myristoylated Akt rescue cancer cells from 4-HW-induced cell death. CONCLUSION The withanolides 4-HW and WA potently inhibit the viability of TNBC cells through induction of cell cycle arrest and apoptosis/necrosis. The PI3K/Akt pathway plays distinct roles in cancer cells respond to 4-HW and WA. These results suggest the potential applications of the withanolides for the treatment of TNBC.
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Affiliation(s)
- Hui-Chun Wang
- Graduate Institute of Natural Products, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan; Research Center for Natural Product and Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Hao-Han Hu
- Graduate Institute of Natural Products, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan; Research Center for Natural Product and Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Ju-Ying Tsai
- Graduate Institute of Natural Products, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Ching-Ying Kuo
- Graduate Institute of Natural Products, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan
| | - Yang-Chang Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan; Research Center for Natural Product and Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, 100 Shih-Chuan 1st Road, Kaohsiung 80708, Taiwan; Research Center for Natural Product and Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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27
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Hsieh KY, Wei CK, Wu CC. YC-1 Prevents Tumor-Associated Tissue Factor Expression and Procoagulant Activity in Hypoxic Conditions by Inhibiting p38/NF-κB Signaling Pathway. Int J Mol Sci 2019; 20:ijms20020244. [PMID: 30634531 PMCID: PMC6359014 DOI: 10.3390/ijms20020244] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 01/03/2019] [Accepted: 01/04/2019] [Indexed: 12/31/2022] Open
Abstract
Tissue factor (TF) expressed in cancer cells has been linked to tumor-associated thrombosis, a major cause of mortality in malignancy. Hypoxia is a common feature of solid tumors and can upregulate TF. In this study, the effect of YC-1, a putative inhibitor of hypoxia-inducible factor-1α (HIF-1α), on hypoxia-induced TF expression was investigated in human lung cancer A549 cells. YC-1 selectively prevented hypoxia-induced TF expression and procoagulant activity without affecting the basal TF levels. Surprisingly, knockdown or pharmacological inhibition of HIF-1α failed to mimic YC-1′s effect on TF expression, suggesting other mechanisms are involved. NF-κB, a transcription factor for TF, and its upstream regulator p38, were activated by hypoxia exposure. Treatment of hypoxic A549 cells with YC-1 prevented the activation of both NF-κB and p38. Inhibition of p38 suppressed hypoxia-activated NF-κB, and inhibited TF expression and activity to similar levels as treatment with an NF-κB inhibitor. Furthermore, stimulation of p38 by anisomycin reversed the effects of YC-1. Taken together, our results suggest that YC-1 prevents hypoxia-induced TF in cancer cells by inhibiting the p38/NF-κB pathway, this is distinct from the conventional anticoagulants that systemically inhibit blood coagulation and may shed new light on approaches to treat tumor-associated thrombosis.
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Affiliation(s)
- Kan-Yen Hsieh
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Chien-Kei Wei
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Research Center for Natural Product and Drug Development, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan.
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Poly TN, Islam MM, Yang HC, Wu CC, Li YCJ. Proton pump inhibitors and risk of hip fracture: a meta-analysis of observational studies. Osteoporos Int 2019; 30:103-114. [PMID: 30539272 DOI: 10.1007/s00198-018-4788-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 11/17/2018] [Accepted: 11/19/2018] [Indexed: 02/07/2023]
Abstract
UNLABELLED We performed a meta-analysis of relevant studies to quantify the magnitude of the association between proton pump inhibitors (PPIs) and risk of hip fracture. Patients with PPIs had a greater risk of hip fracture than those without PPI therapy (RR 1.20, 95% CI 1.14-1.28, p < 0.0001). These results could be taken into consideration with caution, and patients should also be concerned about the inappropriate use of PPIs. INTRODUCTION Proton pump inhibitors (PPIs) are generally considered as first-line medicine with great safety profile, commonly prescribed for gastroesophageal reflux disease (GERD) and peptic ulcer disease. However, several epidemiological studies documented that long-term use of PPIs may be associated with an increased risk of hip fracture. Although, the optimal magnitude of the hip fracture risk is still undetermined. We, therefore, performed a meta-analysis of relevant studies to quantify the magnitude of the association between PPIs and risk of hip fracture. METHODS We collected relevant articles using MEDLINE, EMBASE, Google Scholar, and Web of Science from January 1, 1990, to March 31, 2018. We included only the large (n ≥ 500) observational studies with a follow-up duration of at least one year in which the hip fracture patients were identified by a standard procedure. Two of the authors extracted data from each included study independently according to a standardized protocol. RESULTS A total of 24 observational studies with 2,103,800 participants (319,568 hip fracture patients) met all the eligibility criteria. Patients with PPIs had a greater risk of hip fracture than those without PPI therapy (RR 1.20, 95% CI 1.14-1.28, p < 0.0001). An increased association was also observed in both low and medium doses of PPI taken and hip fracture risk (RR 1.17, 95% CI 1.05-1.29, p = 0.002; RR 1.28, 95% CI 1.14-1.44, p < 0.0001), but it appeared to be even greater among the patients with higher dose (RR 1.30, 95% CI 1.20-1.40, p < 0.0001). Moreover, the overall pooled risk ratios were 1.20 (95% CI 1.15-1.25, p < 0.0001) and 1.24 (95% CI 1.10-1.40, p < 0.0001) for the patients with short- and long-term PPI therapy, respectively, compared with PPI non-users. CONCLUSION Our results suggest that PPI use is significantly associated with an increased risk of hip fracture development, which is not observed in H2RA exposure. Physicians should, therefore, exercise caution when considering a long-term PPI treatment to their patients who already have an elevated risk of hip fracture. In addition, patients should be concerned about the inappropriate use of PPIs; if necessary, then, they should continue to receive it with a clear indication.
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Affiliation(s)
- T N Poly
- Graduate Institute of Biomedical Informatics, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
- International Center for Health Information Technology (ICHIT), Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
| | - M M Islam
- Graduate Institute of Biomedical Informatics, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
- International Center for Health Information Technology (ICHIT), Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
| | - H-C Yang
- International Center for Health Information Technology (ICHIT), Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
| | - C C Wu
- Graduate Institute of Biomedical Informatics, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
- International Center for Health Information Technology (ICHIT), Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan
| | - Y-C J Li
- Graduate Institute of Biomedical Informatics, College of Medical Science and Technology, Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan.
- International Center for Health Information Technology (ICHIT), Taipei Medical University, 250 Wu-Hsing St., Taipei, 110, Taiwan.
- Department of Dermatology, Wan Fang Hospital, Taipei, Taiwan.
- TMU Research Center of Cancer Translational Medicine, Taipei, Taiwan.
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29
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Chang YW, Tseng CP, Lee CH, Hwang TL, Chen YL, Su MT, Chong KY, Lan YW, Wu CC, Chen KJ, Lu FH, Liao HR, Hsueh C, Hsieh PW. β-Nitrostyrene derivatives attenuate LPS-mediated acute lung injury via the inhibition of neutrophil-platelet interactions and NET release. Am J Physiol Lung Cell Mol Physiol 2018; 314:L654-L669. [PMID: 29351433 DOI: 10.1152/ajplung.00501.2016] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Acute lung injury (ALI) and the acute respiratory distress syndrome (ARDS) are high-mortality and life-threatening diseases that are associated with neutrophil activation and accumulation within lung tissue. Emerging evidence indicates that neutrophil-platelet aggregates (NPAs) at sites of injury increase acute inflammation and contribute to the development of ALI. Although numerous studies have increased our understanding of the pathophysiology of ALI, there is still a lack of innovative and useful treatments that reduce mortality, emphasizing that there is an urgent need for novel treatment strategies. In this study, a new series of small compounds of β-nitrostyrene derivatives (BNSDs) were synthesized, and their anti-inflammatory bioactivities on neutrophils and platelets were evaluated. The new small compound C7 modulates neutrophil function by inhibiting superoxide generation and elastase release. Compound C7 elicits protective effects on LPS-induced paw edema and acute lung injury via the inhibition of neutrophil accumulation, proinflammatory mediator release, platelet aggregation, myeloperoxidase activity, and neutrophil extracellular trap (NET) release. NET formation was identified as the bridge for the critical interactions between neutrophils and platelets by confocal microscopy and flow cytometry. This research provides new insights for elucidating the complicated regulation of neutrophils and platelets in ALI and sheds further light on future drug development strategies for ALI/ARDS and acute inflammatory diseases.
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Affiliation(s)
- Yao-Wen Chang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Ching-Ping Tseng
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Molecular Medicine Research Center, Chang Gung University , Taoyuan , Taiwan.,Department of Laboratory Medicine, Chang Gung Memorial Hospital , Taoyuan , Taiwan
| | - Chih-Hsun Lee
- Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan.,Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology , Taoyuan , Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital , Linkou , Taiwan
| | - Yu-Li Chen
- Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Mei-Tzu Su
- Graduate Institute and Department of Microbiology, College of Medicine, National Taiwan University , Taipei , Taiwan
| | - Kowit-Yu Chong
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Medical Biotechnology and Laboratory Science, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Department of Thoracic Medicine, Chang Gung Memorial Hospital at Linkou , Taoyuan , Taiwan
| | - Ying-Wei Lan
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University , Kaohsiung , Taiwan
| | - Kung-Ju Chen
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Fen-Hua Lu
- Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan
| | - Hsiang-Ruei Liao
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital , Linkou , Taiwan
| | - Chuen Hsueh
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Molecular Medicine Research Center, Chang Gung University , Taoyuan , Taiwan.,Department of Pathology, Chang Gung Memorial Hospital, Linkou, Taoyuan , Taiwan
| | - Pei-Wen Hsieh
- Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University , Taoyuan , Taiwan.,Graduate Institute of Natural Products, College of Medicine, and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, Chang Gung University , Taoyuan , Taiwan.,Research Center for Industry of Human Ecology, Chang Gung University of Science and Technology , Taoyuan , Taiwan.,Department of Anesthesiology, Chang Gung Memorial Hospital , Linkou , Taiwan
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30
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Wu CC, Hwang TL, Liao CH, Kuo SC, Lee FY, Lee CY, Teng CM. Selective Inhibition of Protease-activated Receptor 4-dependent Platelet Activation by YD-3. Thromb Haemost 2017. [DOI: 10.1055/s-0037-1613128] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
SummaryIn the present study, the antiplatelet effect and its mechanism of a new synthetic compound YD-3 [1-benzyl-3-(ethoxycarbonylphenyl)-indazole] were examined. YD-3 inhibited the aggregation of washed human platelets caused by protease-activated receptor (PAR) 4 agonist peptide GYPGKF (IC50 = 0.13 ± 0.02 µM), but had no or little effect on that by thrombin, PAR1 agonist peptide SFLLRN, collagen or U46619. YD-3 produced a parallel, rightward shift of the concentration-response curve for GYPGKF without decreasing of the maximum platelet aggregation, indicating a competitive antagonism. In contrast to human platelets, both thrombin- and GYPGKF-induced mouse platelet shape change and aggregation were completely inhibited by YD-3. YD-3 also selectively prevented GYPGKF-induced intracellular Ca2+ mobilization in human platelets. Furthermore, in the PAR1-desensitized human platelets, thrombin induced a relatively slow rise and decay of calcium mobilization that was significantly inhibited by YD-3. In addition, the synergistic effect of SFLLRN and GYPGKF on platelet activation was prevented by YD-3. YD-3 also inhibits both fMLP-stimulated neutrophil- and purified cathepsin G-induced platelet aggregation, which has been demonstrated to be PAR4-dependent. Taken together, our results suggest that YD-3 selectively inhibits PAR4-dependent platelet activation through blockade of PAR4. To the best of our knowledge, it is the first non-peptide PAR4 antagonist.
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Kuo CY, Wang HC, Kung PH, Lu CY, Liao CY, Wu MT, Wu CC. Identification of CalDAG-GEFI as an intracellular target for the vicinal dithiol binding agent phenylarsine oxide in human platelets. Thromb Haemost 2017; 111:892-901. [DOI: 10.1160/th13-07-0629] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Accepted: 11/22/2013] [Indexed: 11/05/2022]
Abstract
SummaryCalDAG-GEFI, a guanine nucleotide exchange factor activating Rap1, is known to play a key role in Ca2+-dependent glycoprotein (GP)IIb/IIIa activation and platelet aggregation. Although inhibition of CalDAG-GEFI could be a potential strategy for antiplatelet therapy, no inhibitor of this protein has been identified. In the present study, phenylarsine oxide (PAO), a vicinal dithiol blocker, potently prevented Rap1 activation in thrombin-stimulated human platelets without significantly inhibiting intracellular Ca2+ mobilisation and protein kinase C activation. PAO also prevented the Ca2+ ionophore-induced Rap1 activation and platelet aggregation, which are dependent on CalDAG-GEFI. In the biotin-streptavidin pull-down assay, CalDAG-GEFI was efficiently pull-downed by streptavidin beads from the lysates of biotin-conjugated PAO-treated platelets, suggesting that PAO binds to intracellular CalDAG-GEFI with high affinity. The above effects of PAO were reversed by a vicinal dithiol compound 2,3-dimercaptopropanol. In addition, CalDAG-GEFI formed disulfide-linked oligomers in platelets treated with the thiol-oxidant diamide, indicating that CalDAG-GEFI contains redox-sensitive thiols. In a purified recombinant protein system, PAO directly inhibited CalDAG-GEFI-stimulated GTP binding to Rap1. Using CalDAG-GEFI and Rap1-overexpressed human embryonic kidney 293T cells, we further confirmed that PAO abolished Ca2+-mediated Rap1 activation. Taken together, these results have demonstrated that CalDAG-GEFI is one of the targets of action of PAO, and propose an important role of vicinal cysteines for the functions of CalDAG-GEFI.
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Wu CC, Tsai JY, Tsai SH. Dietary isothiocyanates reduce anoikis resistance of non-small cell human lung cancer cells. Am J Transl Res 2017. [DOI: 10.1055/s-0037-1608073] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- CC Wu
- Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - JY Tsai
- Kaohsiung Medical University, Kaohsiung City, Taiwan
| | - SH Tsai
- Kaohsiung Medical University, Kaohsiung City, Taiwan
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Wu CC, Hsu CJ, Huang FL, Lin YH, Lin YH, Liu TC, Wu CM. Timing of cochlear implantation in auditory neuropathy patients with OTOF mutations: Our experience with 10 patients. Clin Otolaryngol 2017; 43:352-357. [PMID: 28766844 DOI: 10.1111/coa.12949] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/19/2017] [Indexed: 11/27/2022]
Affiliation(s)
- C C Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - C J Hsu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Otolaryngology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
| | - F L Huang
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - Y H Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Molecular Medicine, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Y H Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Graduate Institute of Medical Genomics and Proteomics, National Taiwan University College of Medicine, Taipei, Taiwan
| | - T C Liu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - C M Wu
- Department of Otolaryngology, Chang Gung Memorial Hospital, Chang Gung University, Taoyuan, Taiwan
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Chen YH, Liu TC, Yang TH, Lin KN, Wu CC, Hsu CJ. Using endoscopy to locate the round window membrane during cochlear implantation: Our experience with 25 patients. Clin Otolaryngol 2017; 43:357-362. [PMID: 28805009 DOI: 10.1111/coa.12955] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/07/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Y H Chen
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - T C Liu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - T H Yang
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - K N Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Otolaryngology, Cardinal Tien Hospital, New Taipei, Taiwan
| | - C C Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan
| | - C J Hsu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei, Taiwan.,Department of Otolaryngology, Taichung Tzu Chi Hospital, Buddhist Tzu Chi Medical Foundation, Taichung, Taiwan
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Abstract
BACKGROUND Empty nose syndrome (ENS) describes symptomatology and radiographic findings after surgeries on turbinates.The treatment of ENS is still debatable. PURPOSE To analyse clinical outcomes of submucosal Medpor® implantation for ENS. METHODS A total of 18 patients underwent submucosal Medpor® implantation from 2006 to 2011. We applied SNOT-22 (SinoNasalOutcome Test) for statistical survey of the patients' symptoms before and after surgery. RESULTS Two patients were lost to follow up after the surgery. Most of the patients developed ENS-related symptoms gradually within 2 years to 16 years after the previous nasal surgery or treatment. The sites of submucosal implantation are mainly septum and nasal floor, unilaterally or bilaterally. There is a significant improvement of SNOT-22 pre-operatively to one year post-operatively. CONCLUSIONS The symptomatolgy remains the most important point when dealing with patients with ENS. Submucosal implantation of Medpor® is a feasible surgical treatment to ENS. A positive cotton test is suggested for the surgical indication and planning.
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Kung PH, Hsieh PW, Lin YT, Lee JH, Chen IH, Wu CC. HPW-RX40 prevents human platelet activation by attenuating cell surface protein disulfide isomerases. Redox Biol 2017; 13:266-277. [PMID: 28600983 PMCID: PMC5466588 DOI: 10.1016/j.redox.2017.05.019] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 05/22/2017] [Accepted: 05/25/2017] [Indexed: 01/01/2023] Open
Abstract
Protein disulfide isomerase (PDI) present at platelet surfaces has been considered to play an important role in the conformational change and activation of the integrin glycoprotein IIb/IIIa (GPIIb/IIIa) and thus enhances platelet aggregation. Growing evidences indicated that platelet surface PDI may serve as a potential target for developing of a new class of antithrombotic agents. In the present study, we investigated the effects of HPW-RX40, a chemical derivative of β-nitrostyrene, on platelet activation and PDI activity. HPW-RX40 inhibited platelet aggregation, GPIIb/IIIa activation, and P-selectin expression in human platelets. Moreover, HPW-RX40 reduced thrombus formation in human whole blood under flow conditions, and protects mice from FeCl3-induced carotid artery occlusion. HPW-RX40 inhibited the activity of recombinant PDI family proteins (PDI, ERp57, and ERp5) as well as suppressed cell surface PDI activity of platelets in a reversible manner. Exogenous addition of PDI attenuated the inhibitory effect of HPW-RX40 on GPIIb/IIIa activation. Structure-based molecular docking simulations indicated that HPW-RX40 binds to the active site of PDI by forming hydrogen bonds. In addition, HPW-RX40 neither affected the cell viability nor induced endoplasmic reticulum stress in human cancer A549 and MDA-MB-231 cells. Taken together, our results suggest that HPW-RX40 is a reversible and non-cytotoxic PDI inhibitor with antiplatelet effects, and it may have a potential for development of novel antithrombotic agents.
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Affiliation(s)
- Po-Hsiung Kung
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Wen Hsieh
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan, Taiwan
| | - Ying-Ting Lin
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Jia-Hau Lee
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - I-Hua Chen
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung, Taiwan.
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Bózsity N, Minorics R, Szabó J, Mernyák E, Schneider G, Wölfling J, Wang HC, Wu CC, Ocsovszki I, Zupkó I. Mechanism of antiproliferative action of a new d-secoestrone-triazole derivative in cervical cancer cells and its effect on cancer cell motility. J Steroid Biochem Mol Biol 2017; 165:247-257. [PMID: 27363663 DOI: 10.1016/j.jsbmb.2016.06.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/04/2016] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 12/24/2022]
Abstract
Cervical cancer is the fourth most frequently diagnosed tumor and the fourth leading cause of cancer death in females worldwide. Cervical cancer is predominantly related with human papilloma virus (HPV) infection, with the most oncogenic types being HPV-18 and -16. Our previous studies demonstrated that some d-secoestrone derivatives exert pronounced antiproliferative activity. The aim of the current investigation was to characterize the mechanism of action of d-secoestrone-triazole (D-SET) on three cervical cancer cell lines with different pathological backgrounds. The growth-inhibitory effects of D-SET were determined by a standard MTT assay. We have found that D-SET exerts a pronounced growth-inhibitory effect on HPV 18-positive HeLa and HPV-negative C-33 A cells, but it has no substantial inhibitory activity on HPV 16-positive SiHa or on intact fibroblast MRC-5 cell lines. After 24h incubation, cells showed the morphological and biochemical signs of apoptosis determined by fluorescent double staining, flow cytometry and caspase-3 activity assay. Besides the elevation of the ratio of cells in the subG1 phase, flow cytometric analysis revealed a cell cycle arrest at G2/M in both HeLa and C-33 A cell lines. To distinguish the G2/M cell population immunocytochemical flow cytometric analysis was performed on HeLa cells. The results show that D-SET significantly increases the ratio of phosphorylated histone H3, indicating cell accumulation in the M phase. Additionally, D-SET significantly increased the maximum rate of microtube formation measured by an in vitro tubulin polymerization assay. Besides its direct antiproliferative activity, the antimigratory property of D-SET has been investigated. Our results demonstrate that D-SET significantly inhibits the migration and invasion of HeLa cells after 24h incubation. These results suggests that D-SET is a potent antiproliferative agent against HPV 16+ and HPV-negative cervical cancer cell lines, with an efficacious motility-inhibiting activity against HPV 16+ cells. Accordingly D-SET can be regarded as a potential drug candidate with a promising new mechanism of action among the antiproliferative steroids, potentially allowing for the design of novel anticancer agents.
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Affiliation(s)
- Noémi Bózsity
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
| | - Renáta Minorics
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
| | - Johanna Szabó
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Erzsébet Mernyák
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Gyula Schneider
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - János Wölfling
- Department of Organic Chemistry, University of Szeged, Dóm tér 8, H-6720 Szeged, Hungary
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Imre Ocsovszki
- Department of Biochemistry, University of Szeged, Dóm tér 9, H-6720 Szeged, Hungary
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
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Tsai JY, Rédei D, Forgo P, Li Y, Vasas A, Hohmann J, Wu CC. Isolation of Phorbol Esters from Euphorbia grandicornis and Evaluation of Protein Kinase C- and Human Platelet-Activating Effects of Euphorbiaceae Diterpenes. J Nat Prod 2016; 79:2658-2666. [PMID: 27731641 DOI: 10.1021/acs.jnatprod.6b00603] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Human platelets contain conventional (α and β) and novel isoforms of PKC (δ and θ), and PKC activation can result in platelet aggregation and secretion reaction that are important for thrombus formation. Several tumor-promoting Euphorbiaceae diterpenes are known to act as direct activators of PKC, but many types of such diterpenes have not been studied as platelet stimulators. In the present study, two new and five known phorbol esters were isolated from Euphorbia grandicornis. Two of the isolated phorbol esters together with compounds representing ingenane, jatrophane, and myrsinane structural types were studied on PKC activation and platelet stimulation. The investigated phorbol esters and ingenane esters induced blood platelet aggregation and ATP secretion. PKC activation was demonstrated by inducing membrane translocation of PKCs, phosphorylation of PKC substrates, and activation of PKC signaling pathways. The PKC-activating effect of the compounds correlated well with their efficacy to cause platelet stimulation. Moreover, by using an isoform-specific PKC inhibitor, it was found that besides conventional PKCs novel PKCs also play a positive role in platelet activation caused by phorbol/ingenane esters, especially in regulating platelet aggregation. The present results suggest that platelets afford a useful model for studying PKC activators of natural origin or their chemical derivatives.
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Affiliation(s)
- Ju-Ying Tsai
- Graduate Institute of Natural Products and ‡Research Center for Natural Products and Drug Development, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pharmacognosy and ⊥Interdisciplinary Centre for Natural Products, University of Szeged , Eötvös u. 6, H-6720 Szeged, Hungary
| | - Dóra Rédei
- Graduate Institute of Natural Products and ‡Research Center for Natural Products and Drug Development, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pharmacognosy and ⊥Interdisciplinary Centre for Natural Products, University of Szeged , Eötvös u. 6, H-6720 Szeged, Hungary
| | - Peter Forgo
- Graduate Institute of Natural Products and ‡Research Center for Natural Products and Drug Development, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pharmacognosy and ⊥Interdisciplinary Centre for Natural Products, University of Szeged , Eötvös u. 6, H-6720 Szeged, Hungary
| | - Yu Li
- Graduate Institute of Natural Products and ‡Research Center for Natural Products and Drug Development, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pharmacognosy and ⊥Interdisciplinary Centre for Natural Products, University of Szeged , Eötvös u. 6, H-6720 Szeged, Hungary
| | - Andrea Vasas
- Graduate Institute of Natural Products and ‡Research Center for Natural Products and Drug Development, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pharmacognosy and ⊥Interdisciplinary Centre for Natural Products, University of Szeged , Eötvös u. 6, H-6720 Szeged, Hungary
| | - Judit Hohmann
- Graduate Institute of Natural Products and ‡Research Center for Natural Products and Drug Development, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pharmacognosy and ⊥Interdisciplinary Centre for Natural Products, University of Szeged , Eötvös u. 6, H-6720 Szeged, Hungary
| | - Chin-Chung Wu
- Graduate Institute of Natural Products and ‡Research Center for Natural Products and Drug Development, Kaohsiung Medical University , Kaohsiung 807, Taiwan
- Department of Pharmacognosy and ⊥Interdisciplinary Centre for Natural Products, University of Szeged , Eötvös u. 6, H-6720 Szeged, Hungary
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Kuo CY, Zupkó I, Chang FR, Hunyadi A, Wu CC, Weng TS, Wang HC. Dietary flavonoid derivatives enhance chemotherapeutic effect by inhibiting the DNA damage response pathway. Toxicol Appl Pharmacol 2016; 311:99-105. [PMID: 27664008 DOI: 10.1016/j.taap.2016.09.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [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: 05/13/2016] [Revised: 08/28/2016] [Accepted: 09/20/2016] [Indexed: 11/15/2022]
Abstract
Flavonoids are the most common group of polyphenolic compounds and abundant in dietary fruits and vegetables. Diet high in vegetables or dietary flavonoid supplements is associated with reduced mortality rate for patients with breast cancer. Many studies have been proposed for mechanisms linking flavonoids to improving chemotherapy efficacy in many types of cancers, but data on this issue is still limited. Herein, we report on a new mechanism through which dietary flavonoids inhibit DNA damage checkpoints and repair pathways. We found that dietary flavonoids could inhibit Chk1 phosphorylation and decrease clonogenic cell growth once breast cancer cells receive ultraviolet irradiation, cisplatin, or etoposide treatment. Since the ATR-Chk1 pathway mainly involves response to DNA replication stress, we propose that flavonoid derivatives reduce the side effect of chemotherapy by improving the sensitivity of cycling cells. Therefore, we propose that increasing intake of common dietary flavonoids is beneficial to breast cancer patients who are receiving DNA-damaging chemotherapy, such as cisplatin or etoposide-based therapy.
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Affiliation(s)
- Ching-Ying Kuo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - István Zupkó
- Department of Pharmacodynamics and Biopharmacy, University of Szeged, Eötvös Utca 6, Szeged H-6720, Hungary
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Attila Hunyadi
- Institute of Pharmacognosy, Faculty of Pharmacy, University of Szeged, Eötvös Utca 6, Szeged H-6720, Hungary
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Teng-Song Weng
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; PhD Program in Translational Medicine, College of Medicine and PhD Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Research Center for Natural Product and Drug Development, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan; Department of Fragrance and Cosmetic Science, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.
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Kuo CY, Chou WC, Wu CC, Wong TS, Kakadiya R, Lee TC, Su TL, Wang HC. Repairing of N-mustard derivative BO-1055 induced DNA damage requires NER, HR, and MGMT-dependent DNA repair mechanisms. Oncotarget 2016. [PMID: 26208482 PMCID: PMC4694865 DOI: 10.18632/oncotarget.4514] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Alkylating agents are frequently used as first-line chemotherapeutics for various newly diagnosed cancers. Disruption of genome integrity by such agents can lead to cell lethality if DNA lesions are not removed. Several DNA repair mechanisms participate in the recovery of mono- or bi-functional DNA alkylation. Thus, DNA repair capacity is correlated with the therapeutic response. Here, we assessed the function of novel water-soluble N-mustard BO-1055 (ureidomustin) in DNA damage response and repair mechanisms. As expected, BO-1055 induces ATM and ATR-mediated DNA damage response cascades, including downstream Chk1/Chk2 phosphorylation, S/G2 cell-cycle arrest, and cell death. Further investigation revealed that cell survival sensitivity to BO-1055 is comparable to that of mitomycin C. Both compounds require nucleotide excision repair and homologous recombination, but not non-homologous end-joining, to repair conventional cross-linking DNA damage. Interestingly and unlike mitomycin C and melphalan, MGMT activity was also observed in BO-1055 damage repair systems, which reflects the occurrence of O-alkyl DNA lesions. Combined treatment with ATM/ATR kinase inhibitors significantly increases BO-1055 sensitivity. Our study pinpoints that BO-1055 can be used for treating tumors that with deficient NER, HR, and MGMT DNA repair genes, or for synergistic therapy in tumors that DNA damage response have been suppressed.
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Affiliation(s)
- Ching-Ying Kuo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Wen-Cheng Chou
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Teng-Song Wong
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Rajesh Kakadiya
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Te-Chang Lee
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Tsann-Long Su
- Institute of Biomedical Sciences, Academia Sinica, Taipei 11529, Taiwan
| | - Hui-Chun Wang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,PhD Program in Translational Medicine, College of Medicine/PhD Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan.,Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
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Lo IW, Cheng YB, Haung CC, Hwang TL, Wu CC, Liou JR, Hou MF, Yuan SS, Chang FR, Wu YC. Constituents of the Leaves of Pandanus Utilis. Nat Prod Commun 2016. [DOI: 10.1177/1934578x1601100209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Nineteen compounds, including seven triterpenoids (1–7), five steroids (8–12), four cyclohexenone derivatives (13–16), two benzenoid glycosides (17 and 18) and one lignan (19), were isolated and separated from the leaves of Pandanus utilis through bioactivity-guided fractionation. Among them, one new lanosterol-type triterpenoid was found and named as (24 R)-24-methyl-5α-4-demethyllanosta-9(11),25-dien-3β-ol (1). The structures of the isolates were determined by mass and spectroscopic analyses, and the compounds were subjected to anti-inflammatory, anti-oxidative and cytotoxic assays.
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Affiliation(s)
- I-Wen Lo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yuan-Bin Cheng
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chen-Chang Haung
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jing-Ru Liou
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ming-Feng Hou
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Shyng-Shiou Yuan
- Lipid Science and Aging Research Center, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
- Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 40402, Taiwan
- Research Center for Chinese Herbal Medicine, China Medical University, Taichung 40402, Taiwan
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40402, Taiwan
- Center of Molecular Medicine, China Medical University Hospital, Taichung 40402, Taiwan
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Loa IW, Cheng YB, Haung CC, Hwang TL, Wu CC, Liou JR, Hou MF, Yuan SS, Chang FR, Wu YC. Constituents of the Leaves of Pandanus utilis. Nat Prod Commun 2016; 11:173-176. [PMID: 27032193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
Nineteen compounds, including seven triterpenoids (1-7), five steroids (8-12), four cyclohexenone derivatives (13-16), two benzenoid glycosides (17 and 18) and one lignan (19), were isolated and separated from the leaves of Pandanus utilis through bioactivity-guided fractionation. Among them, one new lanosterol- type triterpenoid was found and named as (24R)-24-methyl-5a-4-demethyllanosta-9(11),25-dien-3β-ol (1). The structures of the isolates were determined by mass and spectroscopic analyses, and the compounds were subjected to anti-inflammatory, anti-oxidative and cytotoxic assays.
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Wei CK, Chang FR, Hsieh PW, Wu CC. Inhibition of the interactions between metastatic human breast cancer cells and platelets by β-nitrostyrene derivatives. Life Sci 2015; 143:147-55. [DOI: 10.1016/j.lfs.2015.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2015] [Revised: 10/13/2015] [Accepted: 11/02/2015] [Indexed: 02/07/2023]
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Chen IH, Shih HC, Hsieh PW, Chang FR, Wu YC, Wu CC. HPW-RX40 restores anoikis sensitivity of human breast cancer cells by inhibiting integrin/FAK signaling. Toxicol Appl Pharmacol 2015; 289:330-40. [PMID: 26386190 DOI: 10.1016/j.taap.2015.09.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [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: 04/29/2015] [Revised: 09/09/2015] [Accepted: 09/14/2015] [Indexed: 11/30/2022]
Abstract
Anoikis is defined as apoptosis, which is induced by inappropriate cell-matrix interactions. Cancer cells with anoikis resistance tend to undergo metastasis, and this phenomenon has been reported to be associated with integrin and FAK activity. HPW-RX40 is a derivative of 3,4-methylenedioxy-β-nitrostyrene, which is known to prevent platelet aggregation by inhibition of integrin. In the present study, we investigated the effect of HPW-RX40 on an anoikis-resistant human breast cancer cell line MDA-MB-231. HPW-RX40 inhibited cell aggregation and induced cell death in suspending MDA-MB-231 cells, but had only little effect on the monolayer growth of adherent cells. Analysis of caspase activation and poly (ADP-ribose) polymerase (PARP) cleavage confirmed anoikis in HPW-RX40-treated suspending cancer cells. HPW-RX40 also affected the Bcl-2 family proteins in detached cancer cells. Furthermore, HPW-RX40 inhibited detachment-induced activation of FAK and the downstream phosphorylation of Src and paxillin, but did not affect this pathway in adherent cancer cells. We also found that the expression and activation of β1 integrin in MDA-MB-231 cells were reduced by HPW-RX40. The combination of HPW-RX40 with an EGFR inhibitor led to enhanced anoikis and inhibition of the FAK pathway in breast cancer cells. Taken together, our results suggest that HPW-RX40 restores the anoikis sensitivity in the metastatic breast cancer cells by inhibiting integrin and subsequent FAK activation, and reveal a potential strategy for prevention of tumor metastasis.
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Affiliation(s)
- I-Hua Chen
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Hsin-Chu Shih
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Pei-Wen Hsieh
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan; Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan.
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80708, Taiwan; Research Center for Natural Products and Drug Development, Kaohsiung Medical University, Kaohsiung, Taiwan.
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Litster A, Wu CC, Leutenegger CM. Detection of feline upper respiratory tract disease pathogens using a commercially available real-time PCR test. Vet J 2015; 206:149-53. [PMID: 26324635 DOI: 10.1016/j.tvjl.2015.08.001] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2015] [Revised: 07/26/2015] [Accepted: 08/02/2015] [Indexed: 10/23/2022]
Abstract
Feline herpesvirus (FHV-1), feline calicivirus (FCV), Bordetella bronchiseptica (Bb), Chlamydia felis (Cf) and Mycoplasma felis (Mf) are common infectious agents identified in cats with upper respiratory tract disease (URTD). Each of these agents can either act as primary pathogens or cause subclinical infections, and pathogen identification can be used to prevent disease transmission in shelters, or to manage individual cats with recurrent URTD. The aim of this study was to compare pathogen detection rates using real-time PCR testing and virus isolation (VI) or bacterial culture in conjunctival, nasal and oropharyngeal swabs from 18 shelter-housed cats with clinical URTD. Co-infections were common; FHV-1 was most prevalent and Cf and FCV were least prevalent. Agents detected by PCR were FCV 2/18 (11%), FHV-1 17/18 (94%), Bb 8/18 (44%) and Mf 15/18 (83%). Agents detected by VI and bacterial culture were FCV 1/18 (6%), FHV-1 12/18 (67%), Bb 8/18 (44%) and Mf 12/18 (67%). Agreement between PCR results and the other two methods was: FHV-1, 57.4%; FCV, 98.1%; Bb, 75.0%; Mf, 60.0%. Discordancies included PCR-positive, VI-negative (FCV, n = 1/54, 1.9%; FHV-1, n = 23/54, 42.6%), PCR-positive, culture-negative (Bb, n = 6/36, 16.7%; Mf, n = 13/36, 36.1%) or PCR-negative, culture-positive (Bb, n = 3/36, 8.3%; Mf, n = 2/36, 5.6%) results. A combination of an oropharyngeal swab and either a conjunctival or a nasal swab submitted for PCR testing was able to detect all infectious agents tested for in each cat. PCR testing was a sensitive and convenient method of detection of infectious agents in cats with clinical signs of URTD.
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Affiliation(s)
- A Litster
- Department of Veterinary Clinical Sciences, School of Veterinary Medicine, Purdue University, 625 Harrison St., West Lafayette, IN 47907, USA.
| | - C C Wu
- Department of Comparative Pathobiology, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA
| | - C M Leutenegger
- IDEXX Laboratories, Inc., 2825 KOVR Drive, West Sacramento, CA 95605, USA
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Cheng YB, Tsai YH, Lo IW, Haung CC, Tsai YC, Beerhues L, El-Shazly M, Hou MF, Yuan SS, Wu CC, Chang FR, Wu YC. Pandalisines A and B, novel indolizidine alkaloids from the leaves of Pandanus utilis. Bioorg Med Chem Lett 2015; 25:4333-6. [PMID: 26277406 DOI: 10.1016/j.bmcl.2015.07.041] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2015] [Revised: 07/12/2015] [Accepted: 07/18/2015] [Indexed: 12/16/2022]
Abstract
Two novel alkaloids named pandalisines A (1) and B (2), constituting a new class of C8-substituted indolizidine moiety, were isolated from the leaves of Pandanus utilis. The structures of these new compounds were established by their mass and spectroscopic data. The absolute configuration was determined by the comparison of experimental CD and calculated ECD spectra. A plausible biosynthetic pathway for compounds 1 and 2 is advanced. The cytotoxic activities of the isolated alkaloids against A-549, Hep-G2, and MDA-MB-231 cancer cell lines were evaluated. The result showed that 1 and 2 are the first non-cytotoxic indolizidine alkaloids.
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Affiliation(s)
- Yuan-Bin Cheng
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Center for Infectious Disease and Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yi-Hong Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - I-Wen Lo
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chen-Chang Haung
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yu-Chi Tsai
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ludger Beerhues
- Institute of Pharmaceutical Biology, Technische Universität Braunschweig, Braunschweig 38106, Germany
| | - Mohamed El-Shazly
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, Ain-Shams University, Cairo 11566, Egypt
| | - Ming-Feng Hou
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Shyng-Shiou Yuan
- Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
| | - Yang-Chang Wu
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; School of Pharmacy, College of Pharmacy, China Medical University, Taichung 40402, Taiwan; Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 40402, Taiwan; Center of Molecular Medicine, China Medical University Hospital, Taichung 40402, Taiwan.
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Khorashadi L, Wu CC, Betancourt SL, Carter BW. Idiopathic pulmonary haemosiderosis: spectrum of thoracic imaging findings in the adult patient. Clin Radiol 2015; 70:459-65. [PMID: 25515792 DOI: 10.1016/j.crad.2014.11.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2014] [Revised: 11/06/2014] [Accepted: 11/10/2014] [Indexed: 11/30/2022]
Abstract
Idiopathic pulmonary haemosiderosis (IPH) is a rare disease characterized by alveolar capillary haemorrhage resulting in deposition and accumulation of haemosiderin in the lungs. Although its precise pathophysiology remains unclear, several hypotheses have been proposed to explain the aetiology of the disorder, including autoimmune, environmental, allergic, and genetic theories. IPH is typically diagnosed in childhood, usually before the age of 10 years; however, this entity may be encountered in older patients given the greater awareness of the diagnosis, availability and utilization of advanced imaging techniques, and improved treatment and survival. The classic presentation of IPH consists of the triad of haemoptysis, iron-deficiency anaemia, and pulmonary opacities on chest radiography. The diagnosis is usually confirmed via bronchoscopy with bronchoalveolar lavage (BAL), at which time haemosiderin-laden macrophages referred to as siderophages, considered pathognomonic for IPH, may be identified. However, lung biopsy may ultimately be necessary to exclude other disease processes. For children with IPH, the disease course is severe and the prognosis is poor. However, adults generally have a longer disease course with milder symptoms and the prognosis is more favourable. Specific imaging features, although non-specific in isolation, may be identified on thoracic imaging studies, principally chest radiography and CT, depending on the phase of disease (acute or chronic). Recognition of these findings is important to guide appropriate clinical management.
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Affiliation(s)
- L Khorashadi
- Department of Radiology, Mount Auburn Hospital, Cambridge, MA 02138, USA
| | - C C Wu
- Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - S L Betancourt
- Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | - B W Carter
- Department of Diagnostic Radiology, The University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA.
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Wang HC, Chang FR, Huang TJ, Kuo CY, Tsai YC, Wu CC. (-)-Liriopein B Suppresses Breast Cancer Progression via Inhibition of Multiple Kinases. Chem Res Toxicol 2015; 28:897-906. [PMID: 25856345 DOI: 10.1021/tx500518j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Numerous breast cancer patients who achieve an initial response to HER-targeted therapy rapidly develop resistance within one year, leading to treatment failure. Observations from clinical samples indicate that such resistance correlates with an increase in Src, EGFR, and PI3K/Akt activities and a decrease in PTEN activity. Furthermore, Akt survival signaling activation is also found in tumors treated by toxic chemotherapeutic agents. Because cotreatment with a PI3K inhibitor is a promising strategy to delay acquired resistance by preventing secondary gene activation, we therefore investigated the effects of a newly identified compound, (-)-Liriopein B (LB), on PI3K/Akt signaling activity in breast cancer cells. Our results showed that nontoxic doses of LB are able to inhibit AKT activation in both luminal-like MCF-7 and basal-like MDA-MB-231 breast cancer cells. Low doses of LB also inhibited cell migration, invasion, and cancer-stem cell sphere formation. Suppression of EGF-induced EGFR and ERK1/2 activation by LB might contribute in part to retardation of cancer progression. Furthermore, LB increases sensitivity of MDA-MB-231 cells to gefitinib in vitro, suggesting that EGFR may not be the only target of LB. Finally, a small scale in vitro kinase assay screen demonstrated that LB has a potent inhibitory effect on multiple kinases, including PI3K, Src, EGFR, Tie2, lck, lyn, RTK5, FGFR1, Abl, and Flt. In conclusion, this study demonstrates for the first time that the compound LB improves tumor therapeutic efficacy and suggests LB as a promising candidate for studying new leads in the development of kinase inhibitors.
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Affiliation(s)
- Hui-Chun Wang
- †Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,‡PhD Program in Translational Medicine, College of Medicine and PhD Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,§Translational Research Center and Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 80756, Taiwan.,∥Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Fang-Rong Chang
- †Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,∥Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
| | - Tzu-Jung Huang
- †Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Ching-Ying Kuo
- †Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Yu-Chi Tsai
- †Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Chin-Chung Wu
- †Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,‡PhD Program in Translational Medicine, College of Medicine and PhD Program in Toxicology, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 80708, Taiwan.,∥Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan
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Tsai YC, Hsu CC, El-Shazly M, Chiang SY, Wu CC, Wu CC, Lai WC, Yen MH, Wu YC, Chang FR. Phytochemicals and Estrogen-Receptor Agonists from the Aerial Parts of Liriope platyphylla. Molecules 2015; 20:6844-55. [PMID: 25913925 PMCID: PMC6272546 DOI: 10.3390/molecules20046844] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 04/12/2015] [Accepted: 04/13/2015] [Indexed: 11/16/2022] Open
Abstract
One new benzofuran, (2R)-(2',4'-dihydroxybenzyl)-6,7-methylenedioxy-2,3-dihydrobenzofuran (1), one new phenylisocoumarin, 3-(2'-hydroxyphenyl)-6,8-dihydroxy-7-methoxy-isocoumarin (2), and one new benzofuroisocoumarin, platyphyllarin C (3), were isolated from the ethanolic extract of Liriope platyphylla aerial parts, along with seventeen known compounds. The structures of the isolates were established by spectroscopic analysis and comparison with the literature data. The results indicated that structures 1-3 are uncommon in Nature. Benzofuroisocoumarin 4, flavonoids 9, 10, and 13-15, and homoisoflavonoids 19 and 20 exhibited significant binding activity to estrogen-receptor α and/or β as demonstrated by the SEAP reporter assay system in an MCF-7 cell-line.
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Affiliation(s)
- Yu-Chi Tsai
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chia-Chun Hsu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Laboratory Medicine, Paochien Care Cooperation Paochien Hospital, Pingtung 900, Taiwan.
| | - Mohamed El-Shazly
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, Ain-Shams University, Organization of African Unity Street, Abassia, Cairo 11566, Egypt.
| | - Shang-Yu Chiang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chau-Chung Wu
- Department of Internal Medicine, National Taiwan University Hospital, Taipei 100, Taiwan.
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Wan-Chun Lai
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Ming-Hong Yen
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yang-Chang Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan.
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung 404, Taiwan.
- Center for Molecular Medicine, China Medical University Hospital, Taichung 404, Taiwan.
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Cancer Center, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
- Research Center for Natural Product and New Drug, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 807, Taiwan.
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Chen IH, Chang FR, Wu YC, Kung PH, Wu CC. 3,4-Methylenedioxy-β-nitrostyrene inhibits adhesion and migration of human triple-negative breast cancer cells by suppressing β1 integrin function and surface protein disulfide isomerase. Biochimie 2015; 110:81-92. [PMID: 25593085 DOI: 10.1016/j.biochi.2015.01.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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: 10/02/2014] [Accepted: 01/05/2015] [Indexed: 11/17/2022]
Abstract
Triple negative breast cancer (TNBC) exhibits an aggressive clinical course by high metastatic potential. It is known that integrin-mediated cell adhesion and migration are important for cancer metastasis. In the present study, a synthetic compound, 3, 4-methyenedioxy-β-nitrostyrene (MNS), significantly inhibited adhesion of TNBC cell lines to different extracellular matrix (ECM) components. The antimetastatic capacity of MNS was also observed through reducing TNBC cells migration and invasion without affecting cell viability. Confocal microscopy revealed that MNS disrupted the formation of focal adhesion complex and actin stress fiber networks. Consistent with this finding, MNS inhibited phosphorylation of focal adhesion kinase (FAK) and paxillin as detected by Western blot analysis. In exploring the underlying mechanism, we found that MNS inhibited phosphorylation of FAK as a result of reducing β1 integrin activation and clustering. A cell-impermeable dithiol reagent, 2, 3-dimercaptopropane-1-sulfonic acid abrogated all of MNS's actions, indicating that MNS may react with thiol groups of cell surface proteins that are involved in regulation of β1 integrin function as well as cell adhesion and migration. Cell surface protein disulfide isomerase (PDI) has been reported to be essential for the affinity modulation of β integrins. We also demonstrated that MNS inhibited PDI activity both in a pure enzyme system and in intact cancer cells. Taken together, our results suggest that MNS inhibits in vitro metastatic properties of TNBC cells through suppression of β1 integrin activation and focal adhesion signaling. Moreover, inhibition of surface PDI may contribute, at least in part, to the actions of MNS. These results suggest that MNS has a potential to be developed as an anticancer agent for treatment of TNBC.
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Affiliation(s)
- I-Hua Chen
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan.
| | - Po-Hsiung Kung
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Chin-Chung Wu
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung, Taiwan; Department of Marine Biotechnology and Resources, National Sun Yat-Sen University, Kaohsiung, Taiwan.
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