1
|
Li YC, Ngan NT, Cheng KC, Hwang TL, Thang TD, Tuan NN, Yang ML, Kuo PC, Wu TS. Constituents from the Fruiting Bodies of Trametes cubensis and Trametes suaveolens in Vietnam and Their Anti-Inflammatory Bioactivity. Molecules 2021; 26:molecules26237311. [PMID: 34885893 PMCID: PMC8659016 DOI: 10.3390/molecules26237311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 11/25/2021] [Accepted: 11/29/2021] [Indexed: 11/16/2022] Open
Abstract
It is reported that various fungi have been used for medicine and edible foods. The tropical Trametes genus is popular and well-known in Vietnam for its health effects and bioactivities. In this study, the fruiting bodies of the edible fungi T. cubensis and T. suaveolens were collected in Vietnam. The preliminary bioactivity screening data indicated that the methanol extracts of the fruiting bodies of T. cubensis and T. suaveolens displayed significant inhibition of superoxide anion generation and elastase release in human neutrophils. Therefore, the isolation and characterization were performed on these two species by a combination of chromatographic methods and spectrometric analysis. In total, twenty-four compounds were identified, and among these (1-3) were characterized by 1D-, 2D-NMR, and HRMS analytical data. In addition, the anti-inflammatory potentials of some purified compounds were examined by the cellular model for the inhibition of superoxide anion generation and elastase release in human neutrophils. Among the isolated compounds, (5,14), and (19) displayed significant anti-inflammatory potential. As the results suggest, the extracts and isolated compounds from T. cubensis and T. suaveolens are potential candidates for the further development of new anti-inflammatory lead drugs or natural healthy foods.
Collapse
Affiliation(s)
- Yue-Chiun Li
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.L.); (M.-L.Y.)
| | - Nguyen Thi Ngan
- Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam; (N.T.N.); (T.D.T.); (N.N.T.)
| | | | - 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, Graduate Institute of Health Industry Technology, College of Human Ecology, Chang Gung University of Science and Technology, Taoyuan 33302, Taiwan
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 33302, Taiwan
| | - Tran Dinh Thang
- Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam; (N.T.N.); (T.D.T.); (N.N.T.)
| | - Nguyen Ngoc Tuan
- Institute of Biotechnology and Food Technology, Industrial University of Ho Chi Minh City, Ho Chi Minh City 700000, Vietnam; (N.T.N.); (T.D.T.); (N.N.T.)
| | - Mei-Lin Yang
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.L.); (M.-L.Y.)
| | - Ping-Chung Kuo
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.L.); (M.-L.Y.)
- Correspondence: (P.-C.K.); (T.-S.W.); Tel.: +886-6-2353535 (ext. 6806) (P.-C.K.); Tel.: +886-6-2757575 (ext. 65333) (T.-S.W.)
| | - Tian-Shung Wu
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan; (Y.-C.L.); (M.-L.Y.)
- Correspondence: (P.-C.K.); (T.-S.W.); Tel.: +886-6-2353535 (ext. 6806) (P.-C.K.); Tel.: +886-6-2757575 (ext. 65333) (T.-S.W.)
| |
Collapse
|
2
|
Abstract
Present study is intended to assess the probiotic properties of Bacillus spp. isolated from idli batter, a traditional fermented food of Southern India and Sri Lanka. A total of 32 isolates were screened for potential pathogenic behaviour through haemolysis assay, DNase activity and antibiotics sensitivity. Two of the isolates were found to be potentially safe and identified as Bacillus spp. These strains were characterized for in vitro probiotic attributes and antioxidant activity. Both the strains showed strong acid and bile tolerance, transit tolerance, lysozyme tolerance, cell surface hydrophobicity, auto-aggregation, co-aggregation, biofilm formation potential and adhesion to human colon adenocarcinoma (HT 29) cell line demonstrating potential probiotic ability. These strains also exhibited considerable cholesterol binding, thermostability, β-galactosidase production, proteolytic, amylolytic and lipolytic activity. Cell-free supernatant inhibited the biofilm formation by Pseudomonas aeruginosa (KT266804) to 90%. Intact cells showed significant DPPH (41%), hydroxyl (31%), radical scavenging activity and lipid peroxidation inhibition (20.38%), while cell-free extracts exhibited significant superoxide anion radical scavenging activity (16.25%). Results revealed that isolates could be potential probiotic candidate after further assessment of in vivo probiotic properties and safety evaluation and could be utilised as starter cultures in functional foods.
Collapse
Affiliation(s)
- Sharma Shivangi
- Department of Food Science and Technology, Pondicherry University, Puducherry, 605014, India
| | - Palanisamy Bruntha Devi
- Department of Food Science and Technology, Pondicherry University, Puducherry, 605014, India
| | - Kessavane Ragul
- Department of Food Science and Technology, Pondicherry University, Puducherry, 605014, India
| | | |
Collapse
|
3
|
Wang Y, Dillon KM, Li Z, Winckler EW, Matson JB. Alleviating Cellular Oxidative Stress through Treatment with Superoxide-Triggered Persulfide Prodrugs. Angew Chem Int Ed Engl 2020; 59:16698-16704. [PMID: 32592216 PMCID: PMC7719095 DOI: 10.1002/anie.202006656] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Indexed: 12/21/2022]
Abstract
Overproduction of superoxide anion (O2.- ), the primary cellular reactive oxygen species (ROS), is implicated in various human diseases. To reduce cellular oxidative stress caused by overproduction of superoxide, we developed a compound that reacts with O2.- to release a persulfide (RSSH), a type of reactive sulfur species related to the gasotransmitter hydrogen sulfide (H2 S). Termed SOPD-NAC, this persulfide donor reacts specifically with O2.- , decomposing to generate N-acetyl cysteine (NAC) persulfide. To enhance persulfide delivery to cells, we conjugated the SOPD motif to a short, self-assembling peptide (Bz-CFFE-NH2 ) to make a superoxide-responsive, persulfide-donating peptide (SOPD-Pep). Both SOPD-NAC and SOPD-Pep delivered persulfides/H2 S to H9C2 cardiomyocytes and lowered ROS levels as confirmed by quantitative in vitro fluorescence imaging studies. Additional in vitro studies on RAW 264.7 macrophages showed that SOPD-Pep mitigated toxicity induced by phorbol 12-myristate 13-acetate (PMA) more effectively than SOPD-NAC and several control compounds, including common H2 S donors.
Collapse
Affiliation(s)
| | | | - Zhao Li
- Department of of Chemistry, Virginia Tech Center for Drug Discovery, and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States
| | - Ethan W. Winckler
- Department of of Chemistry, Virginia Tech Center for Drug Discovery, and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States
| | - John B. Matson
- Department of of Chemistry, Virginia Tech Center for Drug Discovery, and Macromolecules Innovation Institute, Virginia Tech, Blacksburg, VA 24061, United States
| |
Collapse
|
4
|
Piao L, Fang YH, Hamanaka RB, Mutlu GM, Dezfulian C, Archer SL, Sharp WW. Suppression of Superoxide-Hydrogen Peroxide Production at Site IQ of Mitochondrial Complex I Attenuates Myocardial Stunning and Improves Postcardiac Arrest Outcomes. Crit Care Med 2020; 48:e133-e140. [PMID: 31939812 PMCID: PMC6964871 DOI: 10.1097/ccm.0000000000004095] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVES Cardiogenic shock following cardiopulmonary resuscitation for sudden cardiac arrest is common, occurring even in the absence of acute coronary artery occlusion, and contributes to high rates of postcardiopulmonary resuscitation mortality. The pathophysiology of this shock is unclear, and effective therapies for improving clinical outcomes are lacking. DESIGN Laboratory investigation. SETTING University laboratory. SUBJECTS C57BL/6 adult female mice. INTERVENTIONS Anesthetized and ventilated adult female C57BL/6 wild-type mice underwent a 4, 8, 12, or 16-minute potassium chloride-induced cardiac arrest followed by 90 seconds of cardiopulmonary resuscitation. Mice were then blindly randomized to a single IV injection of vehicle (phosphate-buffered saline) or suppressor of site IQ electron leak, an inhibitor of superoxide production by complex I of the mitochondrial electron transport chain. Suppressor of site IQ electron leak and vehicle were administered during cardiopulmonary resuscitation. MEASUREMENTS AND MAIN RESULTS Using a murine model of asystolic cardiac arrest, we discovered that duration of cardiac arrest prior to cardiopulmonary resuscitation determined postresuscitation success rates, degree of neurologic injury, and severity of myocardial dysfunction. Post-cardiopulmonary resuscitation cardiac dysfunction was not associated with myocardial necrosis, apoptosis, inflammation, or mitochondrial permeability transition pore opening. Furthermore, left ventricular function recovered within 72 hours of cardiopulmonary resuscitation, indicative of myocardial stunning. Postcardiopulmonary resuscitation, the myocardium exhibited increased reactive oxygen species and evidence of mitochondrial injury, specifically reperfusion-induced reactive oxygen species generation at electron transport chain complex I. Suppressor of site IQ electron leak, which inhibits complex I-dependent reactive oxygen species generation by suppression of site IQ electron leak, decreased myocardial reactive oxygen species generation and improved postcardiopulmonary resuscitation myocardial function, neurologic outcomes, and survival. CONCLUSIONS The severity of cardiogenic shock following asystolic cardiac arrest is dependent on the length of cardiac arrest prior to cardiopulmonary resuscitation and is mediated by myocardial stunning resulting from mitochondrial electron transport chain complex I dysfunction. A novel pharmacologic agent targeting this mechanism, suppressor of site IQ electron leak, represents a potential, practical therapy for improving sudden cardiac arrest resuscitation outcomes.
Collapse
Affiliation(s)
- Lin Piao
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, IL
| | - Yong-Hu Fang
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, IL
| | - Robert B Hamanaka
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, Chicago, IL
| | - Gökhan M Mutlu
- Section of Pulmonary and Critical Care Medicine, Department of Medicine, University of Chicago, Chicago, IL
| | - Cameron Dezfulian
- Safar Center for Resuscitation Research, Critical Care Medicine Department, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Stephen L Archer
- Department of Medicine, Queen's University, Kingston, ON, Canada
| | - Willard W Sharp
- Section of Emergency Medicine, Department of Medicine, University of Chicago, Chicago, IL
| |
Collapse
|
5
|
Zhao Y, Li Y, Li Z, Xu B, Chen P, Yang X. Superoxide anions modulate the performance of apelin in the paraventricular nucleus on sympathetic activity and blood pressure in spontaneously hypertensive rats. Peptides 2019; 121:170051. [PMID: 30582943 DOI: 10.1016/j.peptides.2018.12.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [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: 09/25/2018] [Revised: 12/17/2018] [Accepted: 12/18/2018] [Indexed: 01/24/2023]
Abstract
The present study was designed to determine how apelin in paraventricular nucleus (PVN) modulates the renal sympathetic nerve activity (RSNA), arterial blood pressure (ABP), mean arterial pressure (MAP), and heart rate (HR), and whether superoxide anions regulate the performance of PVN apelin in spontaneously hypertensive rats (SHRs). Acute experiment was carried out with 13-week-old male Wistar-Kyoto rats (WKY) and SHRs under anaesthesia. RSNA, ABP, MAP and HR after PVN microinjection were measured. Apelin microinjection into PVN increased RSNA, ABP, MAP and HR in WKY rats and SHRs, more obviously in SHRs. APJ antagonist F13A decreased the RSNA, ABP, MAP and HR in SHRs, and inhibited the effects of apelin. Apelin and APJ mRNA levels were higher in the PVN in SHRs. PVN microinjection of superoxide anion scavengers tempol and tiron, or NAD(P)H oxidase inhibitor apocynin, decreased the RSNA, ABP, MAP and HR in SHRs, and inhibited the effects of apelin, but the superoxide dismutase (SOD) inhibitor diethyldithiocarbamic acid (DETC) potentiated the effects of apelin. NAD(P)H oxidase activity and superoxide anion levels in PVN were increased by apelin, but decreased by APJ antagonist F13A. The apelin-induced increases in NAD(P)H oxidase activity and superoxide anion level were abolished by pre-treatment with F13A. These results indicate that apelin in PVN increases the sympathetic outflow and blood pressure via activating APJ receptor. The enhanced activity of endogenous apelin and APJ receptor in PVN contributes to sympathetic activation in hypertension, and the superoxide anion is involved in these apelin-mediated processes in PVN.
Collapse
Affiliation(s)
- Yuewu Zhao
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China; Department of Cardiology, Xuzhou No. 1 People's Hospital, Xuzhou, China
| | - Yong Li
- Department of Cardiology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Zhengzhang Li
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Bing Xu
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Peng Chen
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Xiangjun Yang
- Department of Cardiology, The First Affiliated Hospital of Soochow University, Suzhou, China.
| |
Collapse
|
6
|
Xu H, Li C, Mozziconacci O, Zhu R, Xu Y, Tang Y, Chen R, Huang Y, Holzbeierlein JM, Schöneich C, Huang J, Li B. Xanthine oxidase-mediated oxidative stress promotes cancer cell-specific apoptosis. Free Radic Biol Med 2019; 139:70-79. [PMID: 31103463 PMCID: PMC6662189 DOI: 10.1016/j.freeradbiomed.2019.05.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 05/06/2019] [Accepted: 05/15/2019] [Indexed: 12/25/2022]
Abstract
The natural compound Alternol was shown to induce profound oxidative stress and apoptotic cell death preferentially in cancer cells. In this study, a comprehensive investigation was conducted to understand the mechanism for Alternol-induced ROS accumulation responsible for apoptotic cell death. Our data revealed that Alternol treatment moderately increased mitochondrial superoxide formation rate, but it was significantly lower than the total ROS positive cell population. Pre-treatment with mitochondria-specific anti-oxidant MitoQ, NOX or NOS specific inhibitors had no protective effect on Alternol-induced ROS accumulation and cell death. However, XDH/XO inhibition by specific small chemical inhibitors or gene silencing reduced total ROS levels and protected cells from apoptosis induced by Alternol. Further analysis revealed that Alternol treatment significantly enhanced XDH oxidative activity and induced a strong protein oxidation-related damage in malignant but not benign cells. Interestingly, benign cells exerted a strong spike in anti-oxidant SOD and catalase activities compared to malignant cells after Alternol treatment. Cell-based protein-ligand engagement and in-silicon docking analysis showed that Alternol interacts with XDH protein on the catalytic domain with two amino acid residues away from its substrate binding sites. Taken together, our data demonstrate that Alternol treatment enhances XDH oxidative activity, leading to ROS-dependent apoptotic cell death.
Collapse
Affiliation(s)
- Haixia Xu
- Department of Critical Care Medicine, Renmin Hospital, Wuhan University, Wuhan, China; Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Changlin Li
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA; Institute of Precision Medicine, Jining Medical University, Jining, China
| | - Olivier Mozziconacci
- Department of Pharmaceutical Chemistry, The University of Kansas School of Pharmacy, Lawrence, KS, USA
| | - Runzhi Zhu
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA; Center for Cell Therapy, Department of Medical Oncology, The Affiliated Hospital, Jiangsu University, Zhenjiang, China
| | - Ying Xu
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Yuzhe Tang
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Ruibao Chen
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | - Yan Huang
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA
| | | | - Christian Schöneich
- Department of Pharmaceutical Chemistry, The University of Kansas School of Pharmacy, Lawrence, KS, USA
| | - Jian Huang
- Department of Pathology, Guangdong Medical University, Zhanjiang, China
| | - Benyi Li
- Department of Urology, The University of Kansas Medical Center, Kansas City, KS, USA; Center for Cell Therapy, Department of Medical Oncology, The Affiliated Hospital, Jiangsu University, Zhenjiang, China; Department of Pathology, Guangdong Medical University, Zhanjiang, China.
| |
Collapse
|
7
|
Lam SH, Li YC, Kuo PC, Hwang TL, Yang ML, Wang CC, Tzen JTC. Chemical Constituents of Vigna luteola and Their Anti-inflammatory Bioactivity. Molecules 2019; 24:molecules24071371. [PMID: 30965630 PMCID: PMC6479608 DOI: 10.3390/molecules24071371] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 03/18/2019] [Revised: 04/06/2019] [Accepted: 04/07/2019] [Indexed: 12/21/2022] Open
Abstract
Seventy-three compounds were identified from the methanol extract of V. luteola, and among these, three new (1–3) were characterized by spectroscopic and mass spectrometric analyses. The isolated constituents were assessed for anti-inflammatory potential evaluation, and several purified principles exhibited significant superoxide anion and elastase inhibitory effects.
Collapse
Affiliation(s)
- Sio-Hong Lam
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
| | - Yue-Chiun Li
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan.
| | - Ping-Chung Kuo
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
- Research Center for Industry of Human Ecology, Research Center for Chinese Herbal Medicine, and Graduate Institute of Health Industry Technology, Chang Gung University of Science and Technology, Taoyuan 333, Taiwan.
- Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan.
| | - Mei-Lin Yang
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
| | - Chien-Chiao Wang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
| | - Jason T C Tzen
- Graduate Institute of Biotechnology, National Chung-Hsing University, Taichung 402, Taiwan.
| |
Collapse
|
8
|
Law JWF, Ser HL, Ab Mutalib NS, Saokaew S, Duangjai A, Khan TM, Chan KG, Goh BH, Lee LH. Streptomyces monashensis sp. nov., a novel mangrove soil actinobacterium from East Malaysia with antioxidative potential. Sci Rep 2019; 9:3056. [PMID: 30816228 PMCID: PMC6395624 DOI: 10.1038/s41598-019-39592-6] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Accepted: 01/21/2019] [Indexed: 11/18/2022] Open
Abstract
A new Streptomyces species discovered from Sarawak mangrove soil is described, with the proposed name - Streptomyces monashensis sp. nov. (strain MUSC 1JT). Taxonomy status of MUSC 1JT was determined via polyphasic approach. Phylogenetic and chemotaxonomic properties of strain MUSC 1JT were in accordance with those known for genus Streptomyces. Based on phylogenetic analyses, the strains closely related to MUSC 1JT were Streptomyces corchorusii DSM 40340T (98.7%), Streptomyces olivaceoviridis NBRC 13066T (98.7%), Streptomyces canarius NBRC 13431T (98.6%) and Streptomyces coacervatus AS-0823T (98.4%). Outcomes of DNA-DNA relatedness between strain MUSC 1JT and its closely related type strains covered from 19.7 ± 2.8% to 49.1 ± 4.3%. Strain MUSC 1JT has genome size of 10,254,857 bp with DNA G + C content of 71 mol%. MUSC 1JT extract exhibited strong antioxidative activity up to 83.80 ± 4.80% in the SOD assay, with significant cytotoxic effect against colon cancer cell lines HCT-116 and SW480. Streptomyces monashensis MUSC 1JT (=DSM 103626T = MCCC 1K03221T) could potentially be a producer of novel bioactive metabolites; hence discovery of this new species may be highly significant to the biopharmaceutical industry as it could lead to development of new and useful chemo-preventive drugs.
Collapse
Affiliation(s)
- Jodi Woan-Fei Law
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Hooi-Leng Ser
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
- Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China
| | - Nurul-Syakima Ab Mutalib
- UKM Medical Molecular Biology Institute (UMBI), UKM Medical Centre, University Kebangsaan Malaysia, Kuala Lumpur, Malaysia
| | - Surasak Saokaew
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
- Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
- Pharmaceutical Outcomes Research Center (CPOR), Faculty of Pharmaceutical Sciences, Naresuan University, Phitsanulok, Thailand
| | - Acharaporn Duangjai
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
- Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand
- Division of Physiology, School of Medical Sciences, University of Phayao, Phayao, Thailand
| | - Tahir Mehmood Khan
- Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia
- The Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- International Genome Centre, Jiangsu University, Zhenjiang, China.
| | - Bey-Hing Goh
- Biofunctional Molecule Exploratory Research Group, Biomedicine Research Advancement Centre, School of Pharmacy, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia.
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
- Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand.
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength, Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, 47500, Bandar Sunway, Selangor Darul Ehsan, Malaysia.
- Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
- Center of Health Outcomes Research and Therapeutic Safety (Cohorts), School of Pharmaceutical Sciences, University of Phayao, Phayao, Thailand.
| |
Collapse
|
9
|
Tête A, Gallais I, Imran M, Chevanne M, Liamin M, Sparfel L, Bucher S, Burel A, Podechard N, Appenzeller BMR, Fromenty B, Grova N, Sergent O, Lagadic-Gossmann D. Mechanisms involved in the death of steatotic WIF-B9 hepatocytes co-exposed to benzo[a]pyrene and ethanol: a possible key role for xenobiotic metabolism and nitric oxide. Free Radic Biol Med 2018; 129:323-337. [PMID: 30268890 DOI: 10.1016/j.freeradbiomed.2018.09.042] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 09/20/2018] [Accepted: 09/26/2018] [Indexed: 12/15/2022]
Abstract
We previously demonstrated that co-exposing pre-steatotic hepatocytes to benzo[a]pyrene (B[a]P), a carcinogenic environmental pollutant, and ethanol, favored cell death. Here, the intracellular mechanisms underlying this toxicity were studied. Steatotic WIF-B9 hepatocytes, obtained by a 48h-supplementation with fatty acids, were then exposed to B[a]P/ethanol (10 nM/5 mM, respectively) for 5 days. Nitric oxide (NO) was demonstrated to be a pivotal player in the cell death caused by the co-exposure in steatotic hepatocytes. Indeed, by scavenging NO, CPTIO treatment of co-exposed steatotic cells prevented not only the increase in DNA damage and cell death, but also the decrease in the activity of CYP1, major cytochrome P450s of B[a]P metabolism. This would then lead to an elevation of B[a]P levels, thus possibly suggesting a long-lasting stimulation of the transcription factor AhR. Besides, as NO can react with superoxide anion to produce peroxynitrite, a highly oxidative compound, the use of FeTPPS to inhibit its formation indicated its participation in DNA damage and cell death, further highlighting the important role of NO. Finally, a possible key role for AhR was pointed out by using its antagonist, CH-223191. Indeed it prevented the elevation of ADH activity, known to participate to the ethanol production of ROS, notably superoxide anion. The transcription factor, NFκB, known to be activated by ROS, was shown to be involved in the increase in iNOS expression. Altogether, these data strongly suggested cooperative mechanistic interactions between B[a]P via AhR and ethanol via ROS production, to favor cell death in the context of prior steatosis.
Collapse
Affiliation(s)
- Arnaud Tête
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Isabelle Gallais
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Muhammad Imran
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Martine Chevanne
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Marie Liamin
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Lydie Sparfel
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Simon Bucher
- Univ Rennes, Inserm, Inra, Institut NUMECAN (Nutrition Metabolisms and Cancer) - UMR_S 1241, UMR_A 1341, F-35000 Rennes, France
| | - Agnès Burel
- Univ Rennes, Biosit - UMS 3480, US_S 018, F-35000 Rennes, France
| | - Normand Podechard
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Brice M R Appenzeller
- HBRU, Luxembourg Institute of Health, 29, rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg
| | - Bernard Fromenty
- Univ Rennes, Inserm, Inra, Institut NUMECAN (Nutrition Metabolisms and Cancer) - UMR_S 1241, UMR_A 1341, F-35000 Rennes, France
| | - Nathalie Grova
- HBRU, Luxembourg Institute of Health, 29, rue Henri Koch, L-4354 Esch-sur-Alzette, Luxembourg
| | - Odile Sergent
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France
| | - Dominique Lagadic-Gossmann
- Univ Rennes, Inserm, EHESP, Irset (Institut de recherche en santé, environnement et travail) - UMR_S 1085, F-35000 Rennes, France.
| |
Collapse
|
10
|
Zhang J, Wang B, Wang H, He H, Wu Q, Qin X, Yang X, Chen L, Xu G, Yuan Z, Yi Q, Zou Z, Yu C. Disruption of the superoxide anions-mitophagy regulation axis mediates copper oxide nanoparticles-induced vascular endothelial cell death. Free Radic Biol Med 2018; 129:268-278. [PMID: 30248444 DOI: 10.1016/j.freeradbiomed.2018.09.032] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [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: 06/22/2018] [Revised: 09/20/2018] [Accepted: 09/20/2018] [Indexed: 12/18/2022]
Abstract
Copper oxide nanoparticles (CuONPs) have been widely used in the industrial and pharmaceutical fields; however, their toxicity profile is deeply concerning. Currently, nanomaterials-induced toxicity in the cardiovascular system is receiving increased attention. Our previous toxicological study found that lysosomal deposition of CuONPs triggered vascular endothelial cell death, indicating that the involvement of autophagic dysfunction was crucial for CuONPs-induced toxicity in human umbilical vein endothelial cells (HUVECs). In the current study, we investigated the detailed mechanism underlying the autophagic dysfunction induced by CuONPs. We demonstrated that CuONPs exposure caused accumulation of superoxide anions, which likely resulted from mitochondrial dysfunctions. MnTBAP, a superoxide anions scavenger, alleviated CuONPs-induced HUVECs death, indicating that excessive superoxide anions were directly related to the CuONPs cytotoxicity in HUVECs. Interestingly, we found that mitophagy (a protective mechanism for clearance of damaged mitochondria and excessive superoxide anions) was initiated but failed to be cleared in CuONPs-treated cells, resulting in the accumulation of damaged mitochondria. Inhibition of mitophagy through Atg5 knockout or blocking of mitochondria fission with Mdivi-1 significantly aggravated CuONPs-induced superoxide anions accumulation and cell death, suggesting that mitophagy is a protective mechanism against CuONPs cytotoxicity in HUVECs. In summary, we demonstrate that superoxide anions (originating from damaged mitochondria) are involved in CuONPs-associated toxicity and that impaired mitophagic flux aggravates the accumulation of excessive superoxide anions, which leads to HUVECs death. Our findings indicate that there are crucial roles for superoxide anions and mitophagy in CuONPs-induced toxicity in vascular endothelial cells.
Collapse
Affiliation(s)
- Jun Zhang
- Institute of Life Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Bin Wang
- Institute of Life Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Hong Wang
- Institute of Life Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Hui He
- College of Pharmacy, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Qiong Wu
- College of Pharmacy, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Xia Qin
- College of Pharmacy, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Xi Yang
- Institute of Life Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Linmu Chen
- Institute of Life Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Ge Xu
- Institute of Life Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Zhiyi Yuan
- College of Pharmacy, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Qiying Yi
- Laboratory Animal Center, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China
| | - Zhen Zou
- Institute of Life Sciences, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China.
| | - Chao Yu
- College of Pharmacy, Chongqing Medical University, No.1 Yixueyuan Road, Yuzhong District, Chongqing, China.
| |
Collapse
|
11
|
Hodes J, Sielaff P, Metz H, Kessler-Becker D, Gassenmeier T, Neubert RHH. The role of chelating agents and amino acids in preventing free radical formation in bleaching systems. Free Radic Biol Med 2018; 129:194-201. [PMID: 30243703 DOI: 10.1016/j.freeradbiomed.2018.09.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 09/15/2018] [Indexed: 11/19/2022]
Abstract
The control of bleaching reaction is important in hair bleaching and laundry detergents to ensure quality of the final product. A better understanding of the reaction mechanisms is needed to minimize product failures. 31P NMR-spectroscopy-based spin trap technique was employed to detect and quantify the free radical species that were generated in different bleaching solutions. These solutions contained the key actives in an alkaline hair colorant/bleaching product, an ammonium salt and hydrogen peroxide at pH = 10. Generally, the main radical species detected in hair oxidative coloring or bleaching processes, were hydroperoxyl/superoxide radicals HO2·/O2.-, amino radicals ·NH2 and hydroxyl radicals ·OH. Their amounts showed a variation based on the chemical composition of the bleaching systems and the metal ion content. The generation of free radicals from reactions between transition metal ions, such as copper, and hydrogen peroxide at pH = 10 was evaluated. In the absence of chelating agents, the copper ions generated a significant level of hydroxyl radicals in a Fenton-like reaction with hydrogen peroxide at pH = 10. Besides that, an increase in copper ion content led to an increase of amino radical ·NH2, whereas the concentration of superoxide radical O2·- decreased which was not yet well reported in the previous literature. The effect of chelating agents like ethylenediaminetetraacetic acid (EDTA), tetrasodium-iminodisuccinate (IDS), a mixture of basic amino acids and dicarboxylic acid on free radical formation was investigated in the presence of binary Cu2+-Ca2+ bleaching systems. As expected, in the binary Cu2+-Ca2+ ion system EDTA did not suppress hydroxyl radical formation effectively, but the mixture containing sodium succinate, lysine and arginine reduced hydroxyl radical formation, whereas IDS (nearly) completely inhibited hydroxyl radical formation. The results indicated that each bleaching solution has its characteristic performance and damage profile. Whereas the reactivity can be controlled by the usage of chelating agents.
Collapse
Affiliation(s)
- Jing Hodes
- Henkel AG & Co. KGaA, 40589 Düsseldorf, Germany; Institute of Pharmacy, Martin-Luther-University Halle-Wittenberg, 06120 Halle/Saale, Germany
| | | | - Hendrik Metz
- Department of Pharmaceutical Technology and Biopharmaceutics, Institute of Pharmacy, Martin Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany
| | | | | | - Reinhard H H Neubert
- Institute of Applied Dermatopharmacy (IADP), Martin Luther University Halle-Wittenberg, 06120 Halle/Saale, Germany.
| |
Collapse
|
12
|
Franck T, Aldib I, Zouaoui Boudjeltia K, Furtmüller PG, Obinger C, Neven P, Prévost M, Soubhye J, Van Antwerpen P, Mouithys-Mickalad A, Serteyn D. The soluble curcumin derivative NDS27 inhibits superoxide anion production by neutrophils and acts as substrate and reversible inhibitor of myeloperoxidase. Chem Biol Interact 2018; 297:34-43. [PMID: 30342014 DOI: 10.1016/j.cbi.2018.10.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2018] [Revised: 10/10/2018] [Accepted: 10/17/2018] [Indexed: 01/17/2023]
Abstract
A water-soluble curcumin lysinate incorporated into hydroxypropyl-β-cyclodextrin (NDS27) has been developed and shown anti-inflammatory properties but no comparative study has been made in parallel with its parent molecule, curcumin on polymorphonuclear neutrophils (PMNs) and myeloperoxidase (MPO) involved in inflammation. The effect of NDS27, its excipients (hydroxypropyl-β-cyclodextrin and lysine), curcumin lysinate and curcumin were compared on the release of superoxide anion by PMNs using a chemiluminescence assay and on the enzymatic activity of MPO. It was shown that curcumin and NDS27 exhibit similar inhibition activities on superoxide anion release by stimulated PMNs but also on MPO peroxidase and halogenation activities. The action mechanism of curcumin and NDS27 on the MPO activity was refined by stopped-flow and docking analyses. We demonstrate that both curcumin and NDS27 are reversible inhibitors of MPO by acting as excellent electron donors for redox intermediate Compound I (∼107 M-1 s-1) but not for Compound II (∼103 M-1 s-1) in the peroxidase cycle of the enzyme, thereby trapping the enzyme in the Compound II state. Docking calculations show that curcumin is able to enter the enzymatic pocket of MPO and bind to the heme cavity by π-stacking and formation of hydrogen bonds involving substituents from both aromatic rings. Hydroxypropyl-β-cyclodextrin is too bulky to enter MPO channel leading to the binding site suggesting a full release of curcumin from the cyclodextrin thereby allowing its full access to the active site of MPO. In conclusion, the hydroxypropyl-β-cyclodextrin of NDS27 enhances curcumin solubilization without affecting its antioxidant capacity and inhibitory activity on MPO.
Collapse
Affiliation(s)
- Thierry Franck
- Department of Clinical Sciences, Anesthesiology and Equine Surgery, Faculty of Veterinary Medicine, B 41, University of Liege, Sart Tilman, Liège, Belgium; Centre of Oxygen, Research and Development-CIRM, Institute of Chemistry B 6a, University of Liege, Sart Tilman, Liège, Belgium.
| | - Iyas Aldib
- Laboratory of Pharmaceutical Chemistry & Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Karim Zouaoui Boudjeltia
- Laboratory of Experimental Medicine, Université Libre de Bruxelles (ULB 222), CHU de Charleroi, Hôpital Vésale, Montigny-le-Tilleul, Belgium
| | - Paul G Furtmüller
- Department of Chemistry, Division of Biochemistry, BOKU, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Christian Obinger
- Department of Chemistry, Division of Biochemistry, BOKU, University of Natural Resources and Life Sciences, Vienna, Austria
| | - Philippe Neven
- Laboratory of Medicinal Chemistry-CIRM, Faculty of Pharmacy, B36, CHU Liège, Liège, Belgium
| | - Martine Prévost
- Structure and Function of Biological Membranes, Faculty of Sciences, Université Libre de Bruxelles, Brussels, Belgium
| | - Jalal Soubhye
- Laboratory of Pharmaceutical Chemistry & Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Pierre Van Antwerpen
- Laboratory of Pharmaceutical Chemistry & Analytical Platform of the Faculty of Pharmacy, Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
| | - Ange Mouithys-Mickalad
- Centre of Oxygen, Research and Development-CIRM, Institute of Chemistry B 6a, University of Liege, Sart Tilman, Liège, Belgium
| | - Didier Serteyn
- Department of Clinical Sciences, Anesthesiology and Equine Surgery, Faculty of Veterinary Medicine, B 41, University of Liege, Sart Tilman, Liège, Belgium; Centre of Oxygen, Research and Development-CIRM, Institute of Chemistry B 6a, University of Liege, Sart Tilman, Liège, Belgium
| |
Collapse
|
13
|
Ding X, Kong X, Chen Y, Zhang C, Hua Y, Li X. Selective Extraction and Antioxidant Properties of Thiol-Containing Peptides in Soy Glycinine Hydrolysates. Molecules 2018; 23:E1909. [PMID: 30065200 PMCID: PMC6222310 DOI: 10.3390/molecules23081909] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2018] [Revised: 07/25/2018] [Accepted: 07/30/2018] [Indexed: 11/17/2022] Open
Abstract
A highly selective procedure to extract thiol-containing peptides (TCPs) from complicated soy glycinin hydrolysates (SGHs) was described. This procedure included the reduction of disulfide bonds by 1,4-dithiothreitol (DTT) and enrichment of TCPs through Thiopropyl-Sephrose 6B covalent chromatography. TCPs were confirmed using a strategy based on mass shift after differential alkylation of sulfhydryl groups with iodoacetamide and N-ethylmaleimide by matrix-assisted laser desorption ionization mass spectrometry (MALDI-TOF-MS). The antioxidant activities of TCPs were evaluated using chemical assays. DTT reduction increased the concentration of sulfhydryl groups from 1.8 μmol/g to 113.8 μmol/g. The efficiency of the extraction was improved by optimizing the loading of sample, extraction and desorption time and the content of desorption reagent. Both of the adsorption and desorption process were found to fit a pseudo-second order model. MALDI-TOF-MS showed that 36 of the 45 extracted peptides were TCPs. The EC50 of TCPs for DPPH, hydroxyl radical, and superoxide anion radical was 0.1, 1.49 and 0.084 mg/mL, respectively. The reducing power of TCPs (0.2 mg/mL) was of 0.375. These results suggest that the combination of DTT reduction and Thiopropyl-Sepharose 6B covalent chromatograph was a successful pathway to extract TCPs from SGHs and the TCPs could be used as potential antioxidants.
Collapse
Affiliation(s)
- Xiuzhen Ding
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, Grain Process Engineering and Technology Center In Shandong Province, School of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Avenue, Taian 271018, China.
| | - Xiangzhen Kong
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
| | - Yeming Chen
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
| | - Caimeng Zhang
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
| | - Yufei Hua
- State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China.
| | - Xiangyang Li
- Key Laboratory of Food Processing Technology and Quality Control in Shandong Province, Grain Process Engineering and Technology Center In Shandong Province, School of Food Science and Engineering, Shandong Agricultural University, 61 Daizong Avenue, Taian 271018, China.
| |
Collapse
|
14
|
Shumaev KB, Dudylina AL, Ivanova MV, Pugachenko IS, Ruuge EK. Dinitrosyl iron complexes: Formation and antiradical action in heart mitochondria. Biofactors 2018; 44:237-244. [PMID: 29469215 DOI: 10.1002/biof.1418] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 12/28/2017] [Accepted: 01/25/2018] [Indexed: 02/02/2023]
Abstract
Mitochondria are widely known as a major source of reactive oxygen and nitrogen species for the cardiovascular system. Numerous studies established that superoxide anion radical production by heart mitochondria is only slightly suppressed under conditions of deep hypoxia, but is completely blocked under anoxia. It was found also that dinitrosyl iron complexes (DNIC) compare favourably with other physiologically active derivatives of nitric oxide (NO). DNIC with glutathione effectively scavenge superoxide radicals generated by mitochondria at different partial pressures of oxygen. Under conditions of simulated hypoxia, the synthesis of thiol-containing DNIC takes place in mitochondria and is concomitant with a significant decrease in the concentration of NO metabolites at the reoxygenation step. Free NO required for DNIC synthesis is generated in the reaction of S-nitrosothiols with superoxide or during single-electron oxidation of the nitroxyl radical (HNO) by coenzyme Q. Plausible mechanisms of antiradical effects of DNIC and their protective role in oxidative stress induced by hypoxia/reoxygenation of myocardial tissues are considered. © 2018 BioFactors, 44(3):237-244, 2018.
Collapse
Affiliation(s)
- Konstantin B Shumaev
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia
- National Medical Research Centre for Cardiology, Moscow, 121552, Russia
| | - Arina L Dudylina
- Faculty of Physics, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Marina V Ivanova
- National Medical Research Centre for Cardiology, Moscow, 121552, Russia
| | - Igor S Pugachenko
- A.N. Bach Institute of Biochemistry, Research Center of Biotechnology of the Russian Academy of Sciences, Moscow, 119071, Russia
| | - Enno K Ruuge
- National Medical Research Centre for Cardiology, Moscow, 121552, Russia
- Faculty of Physics, Lomonosov Moscow State University, Moscow, 119234, Russia
| |
Collapse
|
15
|
Cheng PW, Lin YT, Ho WY, Lu PJ, Chen HH, Lai CC, Sun GC, Yeh TC, Hsiao M, Tseng CJ, Liu CP. Fructose induced neurogenic hypertension mediated by overactivation of p38 MAPK to impair insulin signaling transduction caused central insulin resistance. Free Radic Biol Med 2017; 112:298-307. [PMID: 28754499 DOI: 10.1016/j.freeradbiomed.2017.07.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 02/22/2017] [Revised: 07/20/2017] [Accepted: 07/22/2017] [Indexed: 10/19/2022]
Abstract
Type 2 diabetes are at a high risk of complications related to hypertension, and reports have indicated that insulin levels may be associated with blood pressure (BP). Fructose intake has recently been reported to promote insulin resistance and superoxide formation. The aim of this study is to investigate whether fructose intake can enhance superoxide generation and impair insulin signaling in the NTS and subsequently elevate BP in rats with fructose-induced hypertension. Treatment with fructose for 4 weeks increased the BP, serum fasting insulin, glucose, homeostatic model assessment-insulin resistance, and triglyceride levels and reduced the serum direct high-density lipoprotein level in the fructose group. The Tempol treatment recovered the fructose-induced decrease in nitric oxide production in the NTS. Immunoblotting and immunofluorescence analyses further showed that fructose increased the p38- and fructose-induced phosphorylation of insulin receptor substrate 1 (IRS1S307) and suppressed AktS473 and neuronal nitric oxide synthase phosphorylation. Similarly, fructose was able to impair insulin sensitivity and increase insulin levels in the NTS. Fructose intake also increased the production of superoxide in the NTS. The results of this study suggest that fructose might induce central insulin resistance and elevate BP by enhancing superoxide production and activating p38 phosphorylation in the NTS.
Collapse
Affiliation(s)
- Pei-Wen Cheng
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan; Yuh-Ing Junior College of Health Care & Management, Kaohsiung, Taiwan
| | - Yu-Te Lin
- Section of Neurology, Kaohsiung Veterans General Hospital, Taiwan; Center for Geriatrics and Gerontology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Wen-Yu Ho
- Division of General Internal Medicine, Department of Internal Medicine, Kaohsiung Medical University Hospital, Taiwan
| | - Pei-Jung Lu
- Institute of Clinical Medicine, National Cheng-Kung University, Tainan, Taiwan
| | - Hsin-Hung Chen
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Chi-Cheng Lai
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Gwo-Ching Sun
- Department of Anesthesiology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Tung-Chen Yeh
- Department of Internal Medicine, Division of Cardiology, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan
| | - Michael Hsiao
- Genomics Research Center, Academia Sinica, Taipei, Taiwan
| | - Ching-Jiunn Tseng
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan; School of Medicine, National Yang-Ming University, Taipei, Taiwan; Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan
| | - Chun-Peng Liu
- Department of Administration, Kaohsiung Veterans General Hospital, Kaohsiung, Taiwan; Section of Cardiology, Department of Medicine, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan.
| |
Collapse
|
16
|
Tan W, Li Q, Zhou T, Chen Q, Wang G, Dong F, Guo Z. Synthesis and antioxidant ability of 6,6'-diamino-6,6'-dideoxytrehalose. Bioorg Chem 2017; 74:66-71. [PMID: 28755563 DOI: 10.1016/j.bioorg.2017.07.005] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 01/15/2017] [Revised: 06/22/2017] [Accepted: 07/14/2017] [Indexed: 11/18/2022]
Abstract
In order to study the influence of amino group on antioxidant activity of oligosaccharides, an amino disaccharide, 6,6'-diamino-6,6'-dideoxytrehalose (DAMDT) was successfully prepared in this paper, and its antioxidant activities against DPPH, superoxide, hydrogen peroxide, and hydroxyl radicals, and reducing power were evaluated, respectively. The results indicated that DAMDT had better antioxidant activity than trehalose at any tested concentration. The influence of amino group on antioxidant activity of disaccharides is positive based on the results in this paper, and amination should be an effective method to improve the bioactivity of saccharides.
Collapse
Affiliation(s)
- Wenqiang Tan
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qing Li
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Tingting Zhou
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiuhong Chen
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Gang Wang
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Fang Dong
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China
| | - Zhanyong Guo
- Key Laboratory of Coastal Biology and Bioresource Utilization, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China; University of Chinese Academy of Sciences, Beijing 100049, China.
| |
Collapse
|
17
|
Liu YJ, Mo XL, Tang XZ, Li JH, Hu MB, Yan D, Peng W, Wu CJ. Extraction Optimization, Characterization, and Bioactivities of Polysaccharides from Pinelliae Rhizoma Praeparatum Cum Alumine Employing Ultrasound-Assisted Extraction. Molecules 2017; 22:E965. [PMID: 28598407 PMCID: PMC6152705 DOI: 10.3390/molecules22060965] [Citation(s) in RCA: 25] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Revised: 06/05/2017] [Accepted: 06/07/2017] [Indexed: 01/04/2023] Open
Abstract
In this study, the ultrasound-assisted extraction of polysaccharides (PSA) from Pinelliae Rhizoma Praeparatum Cum Alumine (PRPCA) was optimized by response surface methodology (RSM). The structural characteristics of PSA were analyzed by UV-vis spectroscopy, infrared spectroscopy, scanning electron microscopy, high performance gel permeation chromatography and high performance liquid chromatography, respectively. In addition, antioxidant and antimicrobial activities of PSA were studied by different in vitro assays. Results indicated that the optimal extraction conditions were as follows: the ratio of water to raw of 30 mL/g, extraction time of 46.50 min, ultrasonic temperature of 72.00 °C, and ultrasonic power of 230 W. Under these conditions, the obtained PSA yield (13.21 ± 0.37%) was closely agreed with the predicted yield by the model. The average molecular weights of the PSA were estimated to be 5.34 × 10³ and 6.27 × 10⁵ Da. Monosaccharide composition analysis indicated that PSA consisted of mannose, galactose uronic acid, glucose, galactose, arabinose with a molar ratio of 1.83:0.55:75.75:1.94:0.45. Furthermore, PSA exhibited moderate antioxidant and antibacterial activities in vitro. Collectively, this study provides a promising strategy to obtain bioactive polysaccharides from processed products of herbal medicines.
Collapse
Affiliation(s)
- Yu-Jie Liu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xue-Lin Mo
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Xiao-Zhang Tang
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Jiang-Hua Li
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Mei-Bian Hu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Dan Yan
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Wei Peng
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
| | - Chun-Jie Wu
- College of Pharmacy, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, China.
- Key Research Laboratory of Traditional Chinese Medicine Processing Technology, State Administration of Traditional Chinese Medicine of People's Republic of China, Chengdu 611137, China.
| |
Collapse
|
18
|
Kuo PC, Liao YR, Hung HY, Chuang CW, Hwang TL, Huang SC, Shiao YJ, Kuo DH, Wu TS. Anti-Inflammatory and Neuroprotective Constituents from the Peels of Citrus grandis. Molecules 2017; 22:molecules22060967. [PMID: 28598384 PMCID: PMC6152662 DOI: 10.3390/molecules22060967] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/08/2017] [Accepted: 06/08/2017] [Indexed: 12/31/2022] Open
Abstract
A series of chromatographic separations performed on the ethanol extracts of the peels of Citrus grandis has led to the characterization of forty compounds, including seventeen coumarins, eight flavonoids, two triterpenoids, four benzenoids, two steroids, one lignan, one amide, and five other compounds, respectively. The chemical structures of the purified constituents were identified on the basis of spectroscopic elucidation, including 1D- and 2D-NMR, UV, IR, and mass spectrometric analysis. Most of the isolated compounds were examined for their inhibition of superoxide anion generation and elastase release by human neutrophils. Among the isolates, isomeranzin (3), 17,18-dihydroxybergamottin (12), epoxybergamottin (13), rhoifolin (19), vitexicarpin (22) and 4-hydroxybenzaldehyde (29) displayed the most significant inhibition of superoxide anion generation and elastase release with IC50 values ranged from 0.54 to 7.57 μM, and 0.43 to 4.33 μM, respectively. In addition, 7-hydroxy-8-(2′-hydroxy-3′-methylbut-3′-enyl)coumarin (8) and 17,18-dihydroxybergamottin (12) also exhibited the protection of neurons against Aβ-mediated neurotoxicity at 50 μM.
Collapse
Affiliation(s)
- Ping-Chung Kuo
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
| | - Yu-Ren Liao
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
| | - Hsin-Yi Hung
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
| | - Chia-Wei Chuang
- Department of Chemistry, National Cheng Kung University, Tainan 701, 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.
| | - Shiow-Chyn Huang
- Department of Pharmacy, Chia-Nan University of Pharmacy and Science, Tainan 717, Taiwan.
| | - Young-Ji Shiao
- Division of Basic Chinese Medicine, National Research Institute of Chinese Medicine, Ministry of Health and Welfare, Taipei 112, Taiwan.
| | - Daih-Huang Kuo
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University, Pingtung 907, Taiwan.
| | - Tian-Shung Wu
- School of Pharmacy, College of Medicine, National Cheng Kung University, Tainan 701, Taiwan.
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University, Pingtung 907, Taiwan.
| |
Collapse
|
19
|
Kuo PC, Hung HY, Hwang TL, Du WK, Ku HC, Lee EJ, Tai SH, Chen FA, Wu TS. Anti-inflammatory Flavan-3-ol-dihydroretrochalcones from Daemonorops draco. J Nat Prod 2017; 80:783-789. [PMID: 28398735 DOI: 10.1021/acs.jnatprod.7b00039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Four A-type flavan-3-ol-dihydroretrochalcone dimers, dragonins A-D (1-4), were characterized from the traditional Chinese medicine Sanguis Draconis. The structures of 1-4 were elucidated by spectroscopic and spectrometric analyses. Compounds 1 and 2 exhibited significant inhibition of fMLP/CB-induced superoxide anion and elastase. The signaling pathways accounting for the inhibitory effects of compound 2 were also elucidated. These purified A-type flavan-3-ol-dihydroretrochalcones are new potential leads for the development of anti-inflammatory drugs.
Collapse
Affiliation(s)
- Ping-Chung Kuo
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan 701, Taiwan
| | - Hsin-Yi Hung
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan 701, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University ; 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; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - Wen-Ke Du
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan 701, Taiwan
| | - Hsiang-Chih Ku
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University ; 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; Department of Anesthesiology, Chang Gung Memorial Hospital, Taoyuan 333, Taiwan
| | - E-Jian Lee
- Department of Surgery and Anesthesiology, and Institute of Biomedical Engineering, National Cheng Kung University, Medical Center and Medical School , Tainan 701, Taiwan
| | - Shih-Huang Tai
- Department of Surgery and Anesthesiology, and Institute of Biomedical Engineering, National Cheng Kung University, Medical Center and Medical School , Tainan 701, Taiwan
| | - Fu-An Chen
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University , Pingtung 907, Taiwan
| | - Tian-Shung Wu
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University , Tainan 701, Taiwan
- Department of Pharmacy, College of Pharmacy and Health Care, Tajen University , Pingtung 907, Taiwan
| |
Collapse
|
20
|
Chang YC, Hwang TL, Chao CH, Sung PJ. New Marine Sterols from a Gorgonian Pinnigorgia sp. Molecules 2017; 22:molecules22030393. [PMID: 28273821 PMCID: PMC6155433 DOI: 10.3390/molecules22030393] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [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: 01/19/2017] [Revised: 02/27/2017] [Accepted: 02/28/2017] [Indexed: 11/16/2022] Open
Abstract
Continuous chemical investigation of the gorgonian coral Pinnigorgia sp. resulted in the isolation of two new sterols, 5α,6α-epoxy-(22E,24R)-3β,11-dihydroxy-9,11-secoergosta-7-en-9-one (1) and (22R)-acetoxy-(24ξ)-ergosta-5-en-3β,25-diol (2). The structures of sterols 1 and 2 were elucidated using spectroscopic methods. Sterol 1 displayed inhibitory effects on the generation of superoxide anions and the release of elastase by human neutrophils with IC50 values of 8.65 and 5.86 μM, respectively. The structure of a known metabolite, pubinernoid A (3), is revised as (+)-loliolide (4).
Collapse
Affiliation(s)
- Yu-Chia Chang
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan.
- Doctoral Degree Program in Marine Biotechnology, National Sun Yat-sen University & Academia Sinica, Kaohsiung 804, Taiwan.
- Greenhouse Systems Technology Center, Central Region Campus, Industrial Technology Research Institute, Nantou 540, Taiwan.
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine and Chinese Herbal Medicine Research Team, Healthy Aging Research Center, 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.
| | - Chih-Hua Chao
- School of Pharmacy, China Medical University, Taichung 404, Taiwan.
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan.
| | - Ping-Jyun Sung
- National Museum of Marine Biology & Aquarium, Pingtung 944, Taiwan.
- Chinese Medicine Research and Development Center, China Medical University Hospital, Taichung 404, Taiwan.
- Graduate Institute of Marine Biology, National Dong Hwa University, Pingtung 944, Taiwan.
- Graduate Institute of Natural Products, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Marine Biotechnology and Resources, National Sun Yat-sen University, Kaohsiung 804, Taiwan.
| |
Collapse
|
21
|
Zhang N, Zhang C, Chen Y, Zheng B. Purification and Characterization of Antioxidant Peptides of Pseudosciaena crocea Protein Hydrolysates. Molecules 2016; 22:molecules22010057. [PMID: 28042837 PMCID: PMC6155639 DOI: 10.3390/molecules22010057] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 12/28/2016] [Accepted: 12/29/2016] [Indexed: 01/08/2023] Open
Abstract
Two peptides with antioxidant activity were isolated from Pseudosciaena crocea proteins. Pseudosciaena crocea muscle was hydrolyzed with neutral protease to obtain Pseudosciaena crocea protein hydrolysates (PCPH). After ultrafiltration through molecular weight cut-off membranes of 10, 5 and 3 kDa and assessment of free radical scavenging ability, the fraction (PCPH-IV) with the highest antioxidant activity was obtained. Several purification steps, i.e., ion exchange chromatography, gel filtration chromatography and reversed phase high performance liquid chromatography, were applied to further purify PCPH-IV. Two antioxidant peptides with the amino acid sequences Ser-Arg-Cys-His-Val and Pro-Glu-His-Trp were finally identified by LC-MS/MS.
Collapse
Affiliation(s)
- Ningning Zhang
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Chong Zhang
- Fuzhou Municipal Finance Office, Fuzhou 350002, China.
| | - Yuanyuan Chen
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| | - Baodong Zheng
- College of Food Science, Fujian Agriculture and Forestry University, Fuzhou 350002, China.
| |
Collapse
|
22
|
Zhao L, Kim JC, Paik MJ, Lee W, Hur JS. A Multifunctional and Possible Skin UV Protectant, (3R)-5-Hydroxymellein, Produced by an Endolichenic Fungus Isolated from Parmotrema austrosinense. Molecules 2016; 22:E26. [PMID: 28035958 PMCID: PMC6155896 DOI: 10.3390/molecules22010026] [Citation(s) in RCA: 11] [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: 09/07/2016] [Revised: 12/14/2016] [Accepted: 12/22/2016] [Indexed: 11/16/2022] Open
Abstract
Lichens are considered a great bio-resource because they produce large numbers of secondary metabolites with many biological activities; however, they have not been cultivated under artificial conditions to date. As a result, lichen substances from natural sources are limited and have not been widely utilized in commercial applications. Accordingly, interest in lichen-associated fungi, especially endogenic fungi, has increased. Ultraviolet (UV) radiation in sunlight is harmful to human health, resulting in demand for effective UV filtering agents for use in sunscreen. In this study, we purified (3R)-5-hydroxymellein, which has UVA absorption activity, from the secondary metabolites of an endolichenic fungus (ELF000039). The antioxidant properties were then assessed by in vitro tests. The antioxidant activity of (3R)-5-hydroxymellein was high when compared to the recognized antioxidants ascorbic acid (ASA) and butyl hydroxyl anisole (BHA). Moreover, the compound exhibited no cytotoxicity toward mouse melanoma cell lines, B16F1 and B16F10, or the normal cell line, HaCaT. Furthermore, (3R)-5-hydroxymellein recovered the damage caused by UVB irradiation and inhibited melanin synthesis. Taken together, these results suggest that (3R)-5-hydroxymellein could have an interesting and vital profile to go further development as a multifunctional skin UV protectant.
Collapse
Affiliation(s)
- Lu Zhao
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea.
| | - Jin-Cheol Kim
- Department of Agricultural Chemistry, Institute of Environmentally Friendly Agriculture, College of Agriculture and Life Sciences, Chonnam National University, 77 Yongbong-ro, Gwangju 500-757, Korea.
| | - Man-Jeong Paik
- College of Pharmacy, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea.
| | - Wonjae Lee
- College of Pharmacy, Chosun University, Gwangju 61452, Korea.
| | - Jae-Seoun Hur
- Korean Lichen Research Institute, Sunchon National University, 255 Jungang-Ro, Suncheon 57922, Korea.
| |
Collapse
|
23
|
Zhang H, Li X, Wu K, Wang M, Liu P, Wang X, Deng R. Antioxidant Activities and Chemical Constituents of Flavonoids from the Flower of Paeonia ostii. Molecules 2016; 22:E5. [PMID: 28025554 PMCID: PMC6155618 DOI: 10.3390/molecules22010005] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 12/14/2016] [Accepted: 12/16/2016] [Indexed: 11/30/2022] Open
Abstract
Paeonia ostii is a traditional medicinal plant popularly used in China. This study intended to evaluate the antioxidant properties and the chemical components of the flavonoid-rich extracts from the flowers of P. ostii. The results showed that the flavonoid-rich extracts from the flowers of P. ostii had strong scavenging capacities on 2,2'-Azinobis-(3-ethylbenzthiazoline-6-sulphonate) (ABTS), hydroxyls, superoxide anions, and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals in a dose-dependent manner. Five flavonoids, dihydrokaempferol (1), apigenin-7-O-β-d-glucoside (2), apigenin-7-O-β-d-neohesperidoside (3), kaempferol-7-O-β-d-glucopyranoside (4), and kaempferol-3-O-β-d-glucopyranosyl-7-O-β-d-glucopyranoside (5), were isolated from the flavonoid-rich extracts of the flowers of P. ostii. High-performance liquid chromatography (HPLC) analysis revealed that compounds 3 and 4 were abundant in the P. ostii flower and in flavonoid-rich extracts. The main components of the flower of P. ostii are flavonoids. The high antioxidant activity of the flavonoid-rich extracts may be attributed to the high content of flavonoids. The five isolated flavonoids were the primary antioxidant ingredients, and may play important roles in the strong antioxidant activities of this flower. Based on the obtained results, the flower of P. ostii could be a potential source of natural antioxidants in food and pharmaceutical applications.
Collapse
Affiliation(s)
- Huifang Zhang
- Chemical Engineering & Pharmaceutical College, Henan University of Science and Technology, Luoyang 471023, Henan, China.
| | - Xiaofang Li
- Chemical Engineering & Pharmaceutical College, Henan University of Science and Technology, Luoyang 471023, Henan, China.
| | - Ke Wu
- Chemical Engineering & Pharmaceutical College, Henan University of Science and Technology, Luoyang 471023, Henan, China.
| | - Mengke Wang
- Chemical Engineering & Pharmaceutical College, Henan University of Science and Technology, Luoyang 471023, Henan, China.
| | - Pu Liu
- Chemical Engineering & Pharmaceutical College, Henan University of Science and Technology, Luoyang 471023, Henan, China.
| | - Xinsheng Wang
- Chemical Engineering & Pharmaceutical College, Henan University of Science and Technology, Luoyang 471023, Henan, China.
| | - Ruixue Deng
- Chemical Engineering & Pharmaceutical College, Henan University of Science and Technology, Luoyang 471023, Henan, China.
| |
Collapse
|
24
|
Mehta NJ, Asmaro K, Hermiz DJ, Njus MM, Saleh AH, Beningo KA, Njus D. Hypochlorite converts cysteinyl-dopamine into a cytotoxic product: A possible factor in Parkinson's Disease. Free Radic Biol Med 2016; 101:44-52. [PMID: 27682361 DOI: 10.1016/j.freeradbiomed.2016.09.023] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [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: 07/14/2016] [Revised: 09/19/2016] [Accepted: 09/23/2016] [Indexed: 12/13/2022]
Abstract
The dopamine oxidation product cysteinyl-dopamine has attracted attention as a contributor to the death of dopaminergic neurons in Parkinson's disease. Treatment of cysteinyl-dopamine with hypochlorite yields an even more cytotoxic product. This product has potent redox-cycling activity and initiates production of superoxide in PC12 cells. Taurine, which scavenges hypochlorite, protects PC12 cells from cysteinyl-dopamine but not from the hypochlorite product, suggesting that the product, not cysteinyl-dopamine itself, is toxic. Furthermore, rotenone, which enhances expression of the hypochlorite-producing enzyme myeloperoxidase, increases the cytotoxicity of cysteinyl-dopamine but not of the hypochlorite product. This suggests that dopamine oxidation to cysteinyl-dopamine followed by hypochlorite-dependent conversion to a cytotoxic redox-cycling product leads to the generation of reactive oxygen species and oxidative stress and may contribute to the death of dopaminergic neurons.
Collapse
Affiliation(s)
- Nihar J Mehta
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, United States
| | - Karam Asmaro
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, United States
| | - David J Hermiz
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, United States
| | - Meredith M Njus
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, United States
| | - Ashraf H Saleh
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, United States
| | - Karen A Beningo
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, United States
| | - David Njus
- Department of Biological Sciences, Wayne State University, Detroit, MI 48202, United States.
| |
Collapse
|
25
|
Chen BJ, Shi MJ, Cui S, Hao SX, Hider RC, Zhou T. Improved antioxidant and anti-tyrosinase activity of polysaccharide from Sargassum fusiforme by degradation. Int J Biol Macromol 2016; 92:715-722. [PMID: 27471085 DOI: 10.1016/j.ijbiomac.2016.07.082] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 07/08/2016] [Accepted: 07/23/2016] [Indexed: 10/21/2022]
Abstract
An efficient method for the degradation of polysaccharides isolated from Sargassum fusiforme (PSF) was developed by using ascorbic acid in combination with H2O2. The degradation conditions were optimized using a Box-Behnken response surface design (BBRS). The optimum conditions were established as: concentration of ascorbic acid (VC) and H2O2 17.26mM, degradation temperature 51°C and degradation time 1.6h. The DPPH radical scavenging rate of the degraded polysaccharides from S. fusiforme (DPSF) obtained under the optimal conditions was determined to be 75.22±0.02%, which was well matched with the value (75.21%) predicted by the BBRS model. In vitro antioxidant activity of the polysaccharides was evaluated by determining their radical (hydroxyl radical, superoxide anion radical and DPPH radical) scavenging abilities, and ferric iron reducing power. The inhibitory activity on tyrosinase of DPSF was also evaluated. The results indicate that the degraded polysaccharide has superior antioxidant activity and anti-tyrosinase effect to those of the original polysaccharide.
Collapse
Affiliation(s)
- Bing-Jie Chen
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Xiasha, Hangzhou, Zhejiang 310018, PR China
| | - Mei-Jia Shi
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Xiasha, Hangzhou, Zhejiang 310018, PR China
| | - Shuai Cui
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Xiasha, Hangzhou, Zhejiang 310018, PR China
| | - Shu-Xian Hao
- South China Sea Fishery Research Institute, Chinese Academy of Fishery Sciences, Guangzhou, PR China
| | - Robert C Hider
- Institute of Pharmaceutical Science, King's College London, Franklin-Wilkins Building, 150 Stamford Street, London SE1 9NH, UK
| | - Tao Zhou
- School of Food Science and Biotechnology, Zhejiang Gongshang University, Xiasha, Hangzhou, Zhejiang 310018, PR China.
| |
Collapse
|
26
|
Bilal S, Khan AL, Waqas M, Shahzad R, Kim ID, Lee IJ, Shin DH. Biochemical Constituents and in Vitro Antioxidant and Anticholinesterase Potential of Seeds from Native Korean Persimmon Genotypes. Molecules 2016; 21:E893. [PMID: 27399664 PMCID: PMC6274387 DOI: 10.3390/molecules21070893] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2016] [Revised: 06/30/2016] [Accepted: 07/01/2016] [Indexed: 01/16/2023] Open
Abstract
In the current study, the functional and biochemical potential of the seeds of four persimmon cultivars (PC1, PC2, PC3 and PC4) and their role against oxidative stress and acetylcholinesterase (AChE) inhibition were evaluated. In terms of biochemical compositions, free amino acids, fatty acids and organic acids analysis was performed. The free amino acids ranged from 2617.31 (PC2) to 3773.01 μg∙g(-1) dry weight (PC4). Oleic acid and linoleic acid were the principal fatty acids, which were significantly higher in PC4 and PC1, respectively. PC4 presented the highest amount of organic acid content (4212 mg∙kg(-1)), whereas PC2 presented the lowest (2498 mg∙kg(-1)). PC2 contained higher total phenolic content and flavonoid content, whereas PC3 had the lowest amount as compared to other cultivars. The in vitro DPPH, ABTS and superoxide anion radicals scavenging activity increased in a dose-dependent manner, whereas PC2 showed significantly higher scavenging activities as compared to PC1, PC2 and PC4 types. In the case of AChE inhibition, PC4 showed a moderate activity (67.34% ± 1.8%). In conclusion, the current findings reveal that the studied persimmon seeds cultivars are a source of bioactive natural antioxidants and AChE inhibitors. Such natural products could be employed in pharmaceutical and food industries, whilst can also be considered for the treatment of neurodegenerative diseases such as Alzheimer's.
Collapse
Affiliation(s)
- Saqib Bilal
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
| | - Abdul Latif Khan
- UoN Chair of Oman's Medicinal Plants & Marine Natural Products, University of Nizwa, Nizwa 616, Oman.
| | - Muhammad Waqas
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
- Department of Agriculture, Abdul Wali Khan University Mardan, Mardan 23200, Pakistan.
| | - Raheem Shahzad
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
| | - Il-Doo Kim
- International Institute of Agriculture Research & Development, Kyungpook National University, Daegu 41566, Korea.
| | - In-Jung Lee
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
| | - Dong-Hyun Shin
- School of Applied Biosciences, Kyungpook National University, Daegu 41566, Korea.
| |
Collapse
|
27
|
Zhao ZL, Yang XQ, Gong ZQ, Pan MZ, Han YL, Liu Y. Antioxidant activities of crude phlorotannins from Sargassum hemiphyllum. J Huazhong Univ Sci Technolog Med Sci 2016; 36:449-455. [PMID: 27376819 DOI: 10.1007/s11596-016-1607-6] [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] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2015] [Revised: 04/15/2016] [Indexed: 10/21/2022]
Abstract
Brown algae are well known as a source of biologically active compounds, especially those having antioxidant activities, such as phlorotannins. In this study we examined the antioxidant activities of crude phlorotannins extracts (CPEs) obtained from Sargassum hemiphyllum (SH) and fractionated according to the molecular weights. When CPEs were administrated at a dose of 30 mg/kg to Kunming mice pre-treated with carbon tetrachloride (CCl4), the levels of oxidative stress indicators in the liver, kidney and brain were significantly reduced in vivo. All the components of various molecular weight fractions of CPEs exhibited greater scavenging capacities in clearing hydroxyl free radical and superoxide anion than the positive controls gallic acid, vitamin C and vitamin E. Particularly, the components greater than 30 kD obtained from ethyl acetate phase showed the highest antioxidant capacities. These results indicated that SH is a potential source for extracting phlorotannins, the algal antioxidant compounds.
Collapse
Affiliation(s)
- Zhi-Li Zhao
- Department of Food and Biology, Guangdong University of Technology, Guangzhou, 510006, China
- People's Hospital of Longhua District, Shenzhen, 518000, China
| | | | - Zhong-Qing Gong
- School of Pharmacy, Zhanjiang, 524023, China
- Shenzhen Enhance Technology Co., Ltd., Shenzhen, 518000, China
| | | | - Ya-Li Han
- Department of Food and Biology, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Yi Liu
- Key Laboratory of Research & Development of Nature Drug, Guangdong Medical College, Zhanjiang, 524023, China.
| |
Collapse
|
28
|
Chang CT, Lin YL, Lu SW, Huang CW, Wang YT, Chung YC. Characterization of a Chitosanase from Jelly Fig (Ficus awkeotsang Makino) Latex and Its Application in the Production of Water-Soluble Low Molecular Weight Chitosans. PLoS One 2016; 11:e0150490. [PMID: 26938062 PMCID: PMC4777521 DOI: 10.1371/journal.pone.0150490] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 02/15/2016] [Indexed: 11/18/2022] Open
Abstract
A chitosanase was purified from jelly fig latex by ammonium sulfate fractionation (50–80% saturation) and three successive column chromatography steps. The purified enzyme was almost homogeneous, as determined by SDS-polyacrylamide gel electrophoresis (SDS-PAGE) and gel activity staining. The molecular mass of the enzyme was 20.5 kDa. The isoelectric point (pI) was <3.5, as estimated by isoelectric focusing electrophoresis on PhastGel IEF 3-9. Using chitosan as the substrate, the optimal pH for the enzyme reaction was 4.5; the kinetic parameters Km and Vmax were 0.089 mg mL-1 and 0.69 μmol min-1 mg-1, respectively. The enzyme showed activity toward chitosan polymers which exhibited various degrees of deacetylation (21–94%). The enzyme hydrolyzed 70–84% deacetylated chitosan polymers most effectively. Substrate specificity analysis indicated that the enzyme catalyzed the hydrolysis of chitin and chitosan polymers and their derivatives. The products of the hydrolysis of chitosan polymer derivatives, ethylene glycol (EG) chitosan, carboxymethyl (CM) chitosan and aminoethyl (AE) chitosan, were low molecular weight chitosans (LMWCs); these products were referred to as EG-LMWC, CM-LMWC and AE-LMWC, respectively. The average molecular weights of EG-LMWC, CM-LMWC and AE-LMWC were 11.2, 11.2 and 8.89 kDa, respectively. All of the LMWC products exhibited free radical scavenging activities toward ABTS•+, superoxide and peroxyl radicals.
Collapse
Affiliation(s)
- Chen-Tien Chang
- Department of Food and Nutrition, Providence University, Taichung, Republic of China (Taiwan)
| | - Yen-Lu Lin
- Department of Food and Nutrition, Providence University, Taichung, Republic of China (Taiwan)
| | - Shu-Wei Lu
- Department of Food and Nutrition, Providence University, Taichung, Republic of China (Taiwan)
| | - Chun-Wei Huang
- Department of Food and Nutrition, Providence University, Taichung, Republic of China (Taiwan)
| | - Yu-Ting Wang
- Department of Food and Nutrition, Providence University, Taichung, Republic of China (Taiwan)
| | - Yun-Chin Chung
- Department of Food and Nutrition, Providence University, Taichung, Republic of China (Taiwan)
- * E-mail:
| |
Collapse
|
29
|
Simirgiotis MJ, Quispe C, Bórquez J, Areche C, Sepúlveda B. Fast Detection of Phenolic Compounds in Extracts of Easter Pears (Pyrus communis) from the Atacama Desert by Ultrahigh-Performance Liquid Chromatography and Mass Spectrometry (UHPLC-Q/Orbitrap/MS/MS). Molecules 2016; 21:92. [PMID: 26784158 PMCID: PMC6273977 DOI: 10.3390/molecules21010092] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [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: 12/03/2015] [Revised: 12/28/2015] [Accepted: 01/11/2016] [Indexed: 11/21/2022] Open
Abstract
A small Chilean variety of pears growing in the town of Toconao, an oasis located at the northeastern edge of the Salar de Atacama, northern Chile, was studied by means of modern PDA and high resolution mass spectral data (UHPLC-PDA-HESI-orbitrap-MS/MS). In addition, the antioxidant features of the fruits were compared with the varieties Packhman’s Triumph and Abate Fetel and correlated with the presence of phenolic compounds. The non-pigmented phenolics were fingerprinted and related to the antioxidant capacities measured by the bleaching of the DPPH radical, the ferric reducing antioxidant power (FRAP), the superoxide anion scavenging activity assay (SA), and total content of phenolics and flavonoids measured by spectroscopic methods. The machine allowed a fast separation of 15 min employing a flow rate of 1 mL per minute and could accurately identify 25 compounds, including several isorhamnetin derivatives and phenolic acids, present in the peel and pulps of this Chilean variety for the first time. The compounds were monitored using a wavelength range of 210–800 nm. The native small Chilean pear showed the highest antioxidant activity measured as the bleaching of the DPPH radical, the ferric reducing antioxidant power and superoxide anion scavenging activity (8.61 ± 0.65 μg/mL, 712.63 ± 12.12 micromols trolox equivalents (μmol/TE)/100 g FW, and 82.89% ± 2.52% at 100 μg/mL, respectively).
Collapse
Affiliation(s)
- Mario J Simirgiotis
- Laboratorio de Productos Naturales, Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta, Av. Coloso S-N, Antofagasta 1240000, Chile.
| | - Cristina Quispe
- Facultad de Ciencias de la Salud, Universidad Arturo Prat, Casilla 121, Iquique 1110939, Chile.
| | - Jorge Bórquez
- Laboratorio de Productos Naturales, Departamento de Química, Facultad de Ciencias Básicas, Universidad de Antofagasta, Av. Coloso S-N, Antofagasta 1240000, Chile.
| | - Carlos Areche
- Departamento de Química, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago 7800024, Chile.
| | - Beatriz Sepúlveda
- Departamento de Ciencias Químicas, Universidad Andres Bello, Campus Viña del Mar, Quillota 980, Viña del Mar 2520000, Chile.
| |
Collapse
|
30
|
Strifler G, Tuboly E, Szél E, Kaszonyi E, Cao C, Kaszaki J, Mészáros A, Boros M, Hartmann P. Inhaled Methane Limits the Mitochondrial Electron Transport Chain Dysfunction during Experimental Liver Ischemia-Reperfusion Injury. PLoS One 2016; 11:e0146363. [PMID: 26741361 PMCID: PMC4720186 DOI: 10.1371/journal.pone.0146363] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 12/16/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Methanogenesis can indicate the fermentation activity of the gastrointestinal anaerobic flora. Methane also has a demonstrated anti-inflammatory potential. We hypothesized that enriched methane inhalation can influence the respiratory activity of the liver mitochondria after an ischemia-reperfusion (IR) challenge. METHODS The activity of oxidative phosphorylation system complexes was determined after in vitro methane treatment of intact liver mitochondria. Anesthetized Sprague-Dawley rats subjected to standardized 60-min warm hepatic ischemia inhaled normoxic air (n = 6) or normoxic air containing 2.2% methane, from 50 min of ischemia and throughout the 60-min reperfusion period (n = 6). Measurement data were compared with those on sham-operated animals (n = 6 each). Liver biopsy samples were subjected to high-resolution respirometry; whole-blood superoxide and hydrogen peroxide production was measured; hepatocyte apoptosis was detected with TUNEL staining and in vivo fluorescence laser scanning microscopy. RESULTS Significantly decreased complex II-linked basal respiration was found in the normoxic IR group at 55 min of ischemia and a lower respiratory capacity (~60%) and after 5 min of reperfusion. Methane inhalation preserved the maximal respiratory capacity at 55 min of ischemia and significantly improved the basal respiration during the first 30 min of reperfusion. The IR-induced cytochrome c activity, reactive oxygen species (ROS) production and hepatocyte apoptosis were also significantly reduced. CONCLUSIONS The normoxic IR injury was accompanied by significant functional damage of the inner mitochondrial membrane, increased cytochrome c activity, enhanced ROS production and apoptosis. An elevated methane intake confers significant protection against mitochondrial dysfunction and reduces the oxidative damage of the hepatocytes.
Collapse
Affiliation(s)
- Gerda Strifler
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Eszter Tuboly
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Edit Szél
- Department of Dermatology and Allergology, University of Szeged, Szeged, Hungary
| | - Enikő Kaszonyi
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Chun Cao
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - József Kaszaki
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - András Mészáros
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Mihály Boros
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
| | - Petra Hartmann
- Institute of Surgical Research, University of Szeged, Szeged, Hungary
- * E-mail:
| |
Collapse
|
31
|
Martinez RM, Pinho-Ribeiro FA, Steffen VS, Silva TCC, Caviglione CV, Bottura C, Fonseca MJV, Vicentini FTMC, Vignoli JA, Baracat MM, Georgetti SR, Verri WA, Casagrande R. Topical Formulation Containing Naringenin: Efficacy against Ultraviolet B Irradiation-Induced Skin Inflammation and Oxidative Stress in Mice. PLoS One 2016; 11:e0146296. [PMID: 26741806 PMCID: PMC4704734 DOI: 10.1371/journal.pone.0146296] [Citation(s) in RCA: 57] [Impact Index Per Article: 7.1] [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: 05/21/2015] [Accepted: 12/15/2015] [Indexed: 12/23/2022] Open
Abstract
Naringenin (NGN) exhibits anti-inflammatory and antioxidant activities, but it remains undetermined its topical actions against ultraviolet B (UVB)-induced inflammation and oxidative stress in vivo. The purpose of this study was to evaluate the physicochemical and functional antioxidant stability of NGN containing formulations, and the effects of selected NGN containing formulation on UVB irradiation-induced skin inflammation and oxidative damage in hairless mice. NGN presented ferric reducing power, ability to scavenge 2,2′-azinobis (3-ethylbenzothiazoline- 6-sulfonic acid) (ABTS) and hydroxyl radical, and inhibited iron-independent and dependent lipid peroxidation. Among the three formulations containing NGN, only the F3 kept its physicochemical and functional stability over 180 days. Topical application of F3 in mice protected from UVB-induced skin damage by inhibiting edema and cytokine production (TNF-α, IL-1β, IL-6, and IL-10). Furthermore, F3 inhibited superoxide anion and lipid hydroperoxides production and maintained ferric reducing and ABTS scavenging abilities, catalase activity, and reduced glutathione levels. In addition, F3 maintained mRNA expression of cellular antioxidants glutathione peroxidase 1, glutathione reductase and transcription factor Nrf2 (nuclear factor erythroid 2-related factor 2), and induced mRNA expression of heme oxygenase-1. In conclusion, a formulation containing NGN may be a promising approach to protecting the skin from the deleterious effects of UVB irradiation.
Collapse
Affiliation(s)
- Renata M. Martinez
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Felipe A. Pinho-Ribeiro
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rodovia Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011, 86057–970 Londrina, Paraná, Brasil
| | - Vinicius S. Steffen
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Thais C. C. Silva
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Carla V. Caviglione
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Carolina Bottura
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Maria J. V. Fonseca
- Departamento de Ciências Farmacêuticas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto-USP, Av. do Café s/n, 14049–903 Ribeirão Preto, São Paulo, Brasil
| | - Fabiana T. M. C. Vicentini
- Farmacore Biotecnologia LTDA, Rua Edson Souto, 738—Anexo I, Lagoinha, 14095–250 Ribeirão Preto, São Paulo, Brasil
| | - Josiane A. Vignoli
- Departamento de Bioquímica e Biotecnologia, Centro de Ciências Exatas, Universidade Estadual de Londrina, Rodovia Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011, 86057–970 Londrina, Paraná, Brazil
| | - Marcela M. Baracat
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Sandra R. Georgetti
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
| | - Waldiceu A. Verri
- Departamento de Ciências Patológicas, Universidade Estadual de Londrina-UEL, Rodovia Celso Garcia Cid, Km 380, PR445, Cx. Postal 10.011, 86057–970 Londrina, Paraná, Brasil
- * E-mail: (RC); (WAV)
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas, Universidade Estadual de Londrina-UEL, Avenida Robert Koch, 60, Hospital Universitário, 86039–440 Londrina, Paraná, Brasil
- * E-mail: (RC); (WAV)
| |
Collapse
|
32
|
Rodiño-Janeiro BK, Paradela-Dobarro B, Raposeiras-Roubín S, González-Peteiro M, González-Juanatey JR, Álvarez E. Glycated human serum albumin induces NF-κB activation and endothelial nitric oxide synthase uncoupling in human umbilical vein endothelial cells. J Diabetes Complications 2015; 29:984-92. [PMID: 26297216 DOI: 10.1016/j.jdiacomp.2015.07.016] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 07/10/2015] [Accepted: 07/11/2015] [Indexed: 11/28/2022]
Abstract
AIMS Non-enzymatic glycated proteins could mediate diabetes vascular complications, but the molecular mechanisms are unknown. Our objective was to find new targets involved in the glycated human serum albumin (gHSA)-enhanced extracellular reactive oxygen species (ROS) production in human endothelial cells. METHODS & RESULTS Some nuclear factors and phosphorylation cascades were analysed. gHSA activated nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB), which up-regulated NOX4 and P22PHOX and enhanced ROS production. Pharmacological inhibition of NF-κB reversed gHSA-enhanced NOX4 expression and decreased gHSA-induced ROS production in extra- and intracellular spaces. The inhibition of activator protein-1 (AP-1) induced a rise in NOX4 and P22PHOX subunit expression and a down-regulation of endothelial nitric oxide synthase (eNOS). AP-1 inhibition also enhanced extracellular ROS production in the presence of serum albumin, but not with gHSA. These results were explained by the eNOS uncoupling induced by gHSA, also demonstrated in this study. Phosphatidylinositol 3-kinase or mitogen-activated protein kinase kinase 1/2 did not show to be involved in gHSA-induced ROS production. CONCLUSIONS All together, the results suggested that gHSA-enhanced ROS production in endothelium is mediated by: 1) NF-κB activation and subsequence up-regulation of NADPH oxidase, 2) eNOS uncoupling. AP-1, although is not directly affected by gHSA, is another target for regulating NADPH oxidase and eNOS expression in endothelial cells.
Collapse
Affiliation(s)
- Bruno K Rodiño-Janeiro
- Departamento de Medicina, Universidad de Santiago de Compostela; Servicio de Cardiología, Complejo Hospitalario Universitario de Santiago de Compostela and Instituto de Investigación Sanitaria de Santiago (IDIS), 15706 A Coruña, Spain
| | - Beatriz Paradela-Dobarro
- Departamento de Medicina, Universidad de Santiago de Compostela; Servicio de Cardiología, Complejo Hospitalario Universitario de Santiago de Compostela and Instituto de Investigación Sanitaria de Santiago (IDIS), 15706 A Coruña, Spain
| | - Sergio Raposeiras-Roubín
- Departamento de Medicina, Universidad de Santiago de Compostela; Servicio de Cardiología, Complejo Hospitalario Universitario de Santiago de Compostela and Instituto de Investigación Sanitaria de Santiago (IDIS), 15706 A Coruña, Spain
| | - Mercedes González-Peteiro
- Unidad de Medicina Materno-Fetal, Servicio de Obstetricia, Complejo Hospitalario Universitario de Santiago de Compostela, 15706 A Coruña, Spain
| | - José R González-Juanatey
- Departamento de Medicina, Universidad de Santiago de Compostela; Servicio de Cardiología, Complejo Hospitalario Universitario de Santiago de Compostela and Instituto de Investigación Sanitaria de Santiago (IDIS), 15706 A Coruña, Spain
| | - Ezequiel Álvarez
- Departamento de Medicina, Universidad de Santiago de Compostela; Servicio de Cardiología, Complejo Hospitalario Universitario de Santiago de Compostela and Instituto de Investigación Sanitaria de Santiago (IDIS), 15706 A Coruña, Spain.
| |
Collapse
|
33
|
Chen LC, Liao HR, Chen PY, Kuo WL, Chang TH, Sung PJ, Wen ZH, Chen JJ. Limonoids from the Seeds of Swietenia macrophylla and Their Anti-Inflammatory Activities. Molecules 2015; 20:18551-64. [PMID: 26473818 PMCID: PMC6331795 DOI: 10.3390/molecules201018551] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [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: 08/23/2015] [Revised: 10/02/2015] [Accepted: 10/05/2015] [Indexed: 02/04/2023] Open
Abstract
A new limonoid, swietemacrophin (1), was isolated from the seeds of Swietenia macrophylla, together with five known compounds 2-6. The structure of 1 was determined through extensive 1D/2D-NMR and mass-spectrometric analyses. Swietemacrophin (1), humilinolide F (2), 3,6-O,O-diacetylswietenolide (3), 3-O-tigloylswietenolide (4), and swietemahonin E (5) exhibited inhibition (IC50 values≤45.44 μM) of superoxide anion generation by human neutrophils in response to formyl-L-methionyl-L-leucyl-L-phenylalanine (fMLP). Compounds 1, 4, 5, and swietenine (6) showed potent inhibition with IC50 values≤36.32 μM, against lipopolysaccharide (LPS)-induced nitric oxide (NO) generation.
Collapse
Affiliation(s)
- Li-Chai Chen
- Department of Marine Biotechnology and Resources, Asia-Pacific Ocean Research Center, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
- Department of Pharmacy, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan.
| | - Hsiang-Ruei Liao
- Graduate Institute of Natural Products, School of Traditional Chinese Medicine, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan.
| | - Pei-Yu Chen
- Department of Pharmacy, Zuoying Branch of Kaohsiung Armed Forces General Hospital, Kaohsiung 81342, Taiwan.
| | - Wen-Lung Kuo
- Chung-Jen Junior College of Nursing, Health Sciences and Management, Chiayi 60077, Taiwan.
| | - Tsung-Hsien Chang
- Department of Medical Education and Research, Kaohsiung Veterans General Hospital, Kaohsiung 813, Taiwan.
| | - Ping-Jyun Sung
- National Museum of Marine Biology and Aquarium, Pingtung 944, Taiwan.
| | - Zhi-Hong Wen
- Department of Marine Biotechnology and Resources, Asia-Pacific Ocean Research Center, National Sun Yat-Sen University, Kaohsiung 80424, Taiwan.
| | - Jih-Jung Chen
- Department of Pharmacy, Tajen University, Pingtung 90741, Taiwan.
- Graduate Institute of Pharmaceutical Technology, Tajen University, Pingtung 90741, Taiwan.
| |
Collapse
|
34
|
Lightfoot AP, Sakellariou GK, Nye GA, McArdle F, Jackson MJ, Griffiths RD, McArdle A. SS-31 attenuates TNF-α induced cytokine release from C2C12 myotubes. Redox Biol 2015; 6:253-259. [PMID: 26291279 PMCID: PMC4556772 DOI: 10.1016/j.redox.2015.08.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2015] [Accepted: 08/07/2015] [Indexed: 02/08/2023] Open
Abstract
TNF-α is a key inflammatory mediator and is proposed to induce transcriptional responses via the mitochondrial generation of Reactive Oxygen Species (ROS). The aim of this study was to determine the effect of TNF-α on the production of myokines by skeletal muscle. Significant increases were seen in the release of IL-6, MCP-1/CCL2, RANTES/CCL5 and KC/CXCL1 and this release was inhibited by treatment with Brefeldin A, suggesting a golgi-mediated release of cytokines by muscle cells. An increase was also seen in superoxide in response to treatment with TNF-α, which was localised to the mitochondria and this was also associated with activation of NF-κB. The changes in superoxide, activation of NF-kB and release of myokines were attenuated following pre-treatment with SS-31 peptide indicating that the ability of TNF-α to induce myokine release may be mediated through mitochondrial superoxide, which is, at least in part, associated with activation of the redox sensitive transcription factor NF-kB.
Collapse
Affiliation(s)
- Adam P Lightfoot
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Giorgos K Sakellariou
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Gareth A Nye
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Francis McArdle
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Malcolm J Jackson
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Richard D Griffiths
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom
| | - Anne McArdle
- MRC-Arthritis UK Centre for Integrated Research into Musculoskeletal Ageing, University of Liverpool, United Kingdom.
| |
Collapse
|
35
|
Fang HW, Liao YR, Hwang TL, Shieh PC, Lee KH, Hung HY, Wu TS. Total synthesis of cordatanine, structural reassignment of drymaritin, and anti-inflammatory activity of synthetic precursors. Bioorg Med Chem Lett 2015; 25:3822-4. [PMID: 26248804 DOI: 10.1016/j.bmcl.2015.07.074] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [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: 06/22/2015] [Revised: 07/20/2015] [Accepted: 07/22/2015] [Indexed: 11/30/2022]
Abstract
In this study, cordatanine, with a canthin-6-one skeleton, was totally synthesized in four steps via a Pictet-Spengler reaction using tryptamine and methyl glyoxylate with a total yield of 8%. The NMR spectra of synthesized cordatanine compared well with those of drymaritin isolated by Hsieh et al., confirming the need to revise the original structural assignment. In addition, kumujian A, a synthetic intermediate, showed significant anti-inflammatory effects, inhibiting both superoxide anion generation (IC50 4.87 μg/mL) and elastase release (IC50 6.29 μg/mL).
Collapse
Affiliation(s)
- Hsin Wei Fang
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 1 University Road, Tainan 701, Taiwan
| | - Yu-Ren Liao
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 1 University Road, Tainan 701, Taiwan
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Kweishan 333, Taoyuan, Taiwan
| | - Po-Chuen Shieh
- Department of Pharmacy, Tajen University, Pintung 907, Taiwan
| | - Kuo-Hsiung Lee
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC 27599, USA; Chinese Medicine and Development Center, China Medical University Hospital, Taichung 404, Taiwan
| | - Hsin-Yi Hung
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 1 University Road, Tainan 701, Taiwan.
| | - Tian-Shung Wu
- School of Pharmacy, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, No. 1 University Road, Tainan 701, Taiwan; Department of Pharmacy, Tajen University, Pintung 907, Taiwan.
| |
Collapse
|
36
|
Peng H, Li C, Kadow S, Henry BD, Steinmann J, Becker KA, Riehle A, Beckmann N, Wilker B, Li PL, Pritts T, Edwards MJ, Zhang Y, Gulbins E, Grassmé H. Acid sphingomyelinase inhibition protects mice from lung edema and lethal Staphylococcus aureus sepsis. J Mol Med (Berl) 2015; 93:675-89. [PMID: 25616357 PMCID: PMC4432103 DOI: 10.1007/s00109-014-1246-y] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 12/17/2014] [Indexed: 12/21/2022]
Abstract
UNLABELLED Pulmonary edema associated with increased vascular permeability is a severe complication of Staphylococcus aureus-induced sepsis and an important cause of human pathology and death. We investigated the role of the mammalian acid sphingomyelinase (Asm)/ceramide system in the development of lung edema caused by S. aureus. Our findings demonstrate that genetic deficiency or pharmacologic inhibition of Asm reduced lung edema in mice infected with S. aureus. The Asm/ceramide system triggered the formation of superoxide, resulting in degradation of tight junction proteins followed by lung edema. Treatment of infected mice with amitriptyline, a potent inhibitor of Asm, protected mice from lung edema caused by S. aureus, but did not reduce systemic bacterial numbers. In turn, treatment with antibiotics reduced bacterial numbers but did not protect mice from lung edema. In contrast, only the combination of antibiotics and amitriptyline inhibited both pulmonary edema and bacteremia protecting mice from lethal sepsis and lung dysfunction suggesting the combination of both drugs as novel treatment option for sepsis. KEY MESSAGES Antibiotics are often insufficient to cure S. aureus-induced sepsis. S. aureus induces lung edema via the Asm/ceramide system. Genetic deficiency of Asm inhibits lung dysfunction upon infection with S. aureus. Pharmacologic inhibition of Asm reduces lung edema induced by S. aureus. Antibiotics plus amitriptyline protect mice from lung edema and lethal S. aureus sepsis.
Collapse
Affiliation(s)
- Huiming Peng
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| | - Cao Li
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| | - Stephanie Kadow
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| | - Brian D. Henry
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267 USA
| | - Jörg Steinmann
- Department of Medical Microbiology, University of Duisburg-Essen, Virchowstrasse 179, 45147 Essen, Germany
| | - Katrin Anne Becker
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| | - Andrea Riehle
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| | - Natalie Beckmann
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| | - Barbara Wilker
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| | - Pin-Lan Li
- Department of Pharmacology and Toxicology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298 USA
| | - Timothy Pritts
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267 USA
| | - Michael J. Edwards
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267 USA
| | - Yang Zhang
- Department of Pharmacology and Toxicology, Medical College of Virginia, Virginia Commonwealth University, Richmond, VA 23298 USA
| | - Erich Gulbins
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
- Department of Surgery, University of Cincinnati, Cincinnati, OH 45267 USA
| | - Heike Grassmé
- Department of Molecular Biology, University of Duisburg-Essen, Hufelandstrasse 55, 45122 Essen, Germany
| |
Collapse
|
37
|
Ribeiro TP, Fernandes C, Melo KV, Ferreira SS, Lessa JA, Franco RWA, Schenk G, Pereira MD, Horn A. Iron, copper, and manganese complexes with in vitro superoxide dismutase and/or catalase activities that keep Saccharomyces cerevisiae cells alive under severe oxidative stress. Free Radic Biol Med 2015; 80:67-76. [PMID: 25511255 DOI: 10.1016/j.freeradbiomed.2014.12.005] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Revised: 11/24/2014] [Accepted: 12/01/2014] [Indexed: 12/31/2022]
Abstract
Due to their aerobic lifestyle, eukaryotic organisms have evolved different strategies to overcome oxidative stress. The recruitment of some specific metalloenzymes such as superoxide dismutases (SODs) and catalases (CATs) is of great importance for eliminating harmful reactive oxygen species (hydrogen peroxide and superoxide anion). Using the ligand HPClNOL {1-[bis(pyridin-2-ylmethyl)amino]-3-chloropropan-2-ol}, we have synthesized three coordination compounds containing iron(III), copper(II), and manganese(II) ions, which are also present in the active site of the above-noted metalloenzymes. These compounds were evaluated as SOD and CAT mimetics. The manganese and iron compounds showed both SOD and CAT activities, while copper showed only SOD activity. The copper and manganese in vitro SOD activities are very similar (IC50~0.4 μmol dm(-3)) and about 70-fold higher than those of iron. The manganese compound showed CAT activity higher than that of the iron species. Analyzing their capacity to protect Saccharomyces cerevisiae cells against oxidative stress (H2O2 and the O2(•-) radical), we observed that all compounds act as antioxidants, increasing the resistance of yeast cells mainly due to a reduction of lipid oxidation. Especially for the iron compound, the data indicate complete protection when wild-type cells were exposed to H2O2 or O2(•-) species. Interestingly, these compounds also compensate for both superoxide dismutase and catalase deficiencies; their antioxidant activity is metal ion dependent, in the order iron(III)>copper(II)>manganese(II). The protection mechanism employed by the complexes proved to be independent of the activation of transcription factors (such as Yap1, Hsf1, Msn2/Msn4) and protein synthesis. There is no direct relation between the in vitro and the in vivo antioxidant activities.
Collapse
Affiliation(s)
- Thales P Ribeiro
- Laboratório de Citotoxicidade e Genotoxicidade, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-909, RJ, Brazil
| | - Christiane Fernandes
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro - Campos dos Goytacazes, 28013-602, RJ, Brazil
| | - Karen V Melo
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro - Campos dos Goytacazes, 28013-602, RJ, Brazil
| | - Sarah S Ferreira
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro - Campos dos Goytacazes, 28013-602, RJ, Brazil
| | - Josane A Lessa
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro - Campos dos Goytacazes, 28013-602, RJ, Brazil
| | - Roberto W A Franco
- Laboratório de Ciência Físicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro - Campos dos Goytacazes, 28013-602, RJ, Brazil
| | - Gerhard Schenk
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, 4072, Australia
| | - Marcos D Pereira
- Laboratório de Citotoxicidade e Genotoxicidade, Departamento de Bioquímica, Instituto de Química, Universidade Federal do Rio de Janeiro, Rio de Janeiro, 21941-909, RJ, Brazil.
| | - Adolfo Horn
- Laboratório de Ciências Químicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro - Campos dos Goytacazes, 28013-602, RJ, Brazil.
| |
Collapse
|
38
|
Imaizumi N, Kwang Lee K, Zhang C, Boelsterli UA. Mechanisms of cell death pathway activation following drug-induced inhibition of mitochondrial complex I. Redox Biol 2015; 4:279-88. [PMID: 25625582 PMCID: PMC4315936 DOI: 10.1016/j.redox.2015.01.005] [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] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 01/03/2015] [Accepted: 01/07/2015] [Indexed: 11/02/2022] Open
Abstract
Respiratory complex I inhibition by drugs and other chemicals has been implicated as a frequent mode of mitochondria-mediated cell injury. However, the exact mechanisms leading to the activation of cell death pathways are incompletely understood. This study was designed to explore the relative contributions to cell injury of three distinct consequences of complex I inhibition, i.e., impairment of ATP biosynthesis, increased formation of superoxide and, hence, peroxynitrite, and inhibition of the mitochondrial protein deacetylase, Sirt3, due to imbalance of the NADH/NAD(+) ratio. We used the antiviral drug efavirenz (EFV) to model drug-induced complex I inhibition. Exposure of cultured mouse hepatocytes to EFV resulted in a rapid onset of cell injury, featuring a no-effect level at 30µM EFV and submaximal effects at 50µM EFV. EFV caused a concentration-dependent decrease in cellular ATP levels. Furthermore, EFV resulted in increased formation of peroxynitrite and oxidation of mitochondrial protein thiols, including cyclophilin D (CypD). This was prevented by the superoxide scavenger, Fe-TCP, or the peroxynitrite decomposition catalyst, Fe-TMPyP. Both ferroporphyrins completely protected from EFV-induced cell injury, suggesting that peroxynitrite contributed to the cell injury. Finally, EFV increased the NADH/NAD(+) ratio, inhibited Sirt3 activity, and led to hyperacetylated lysine residues, including those in CypD. However, hepatocytes isolated from Sirt3-null mice were protected against 40µM EFV as compared to their wild-type controls. In conclusion, these data are compatible with the concept that chemical inhibition of complex I activates multiple pathways leading to cell injury; among these, peroxynitrite formation may be the most critical.
Collapse
Affiliation(s)
- Naoki Imaizumi
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA; Laboratory of Molecular Genetics, School of Health Sciences, Faculty of Medicine, University of the Ryukyus, Okinawa 903-0215, Japan.
| | - Kang Kwang Lee
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Carmen Zhang
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| | - Urs A Boelsterli
- Department of Pharmaceutical Sciences, University of Connecticut, Storrs, CT 06269, USA
| |
Collapse
|
39
|
Hosaka H, Haruki R, Yamada K, Böttcher C, Komatsu T. Hemoglobin-albumin cluster incorporating a Pt nanoparticle: artificial O2 carrier with antioxidant activities. PLoS One 2014; 9:e110541. [PMID: 25310133 PMCID: PMC4195732 DOI: 10.1371/journal.pone.0110541] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [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: 07/17/2014] [Accepted: 09/17/2014] [Indexed: 11/19/2022] Open
Abstract
A covalent core-shell structured protein cluster composed of hemoglobin (Hb) at the center and human serum albumins (HSA) at the periphery, Hb-HSAm, is an artificial O2 carrier that can function as a red blood cell substitute. Here we described the preparation of a novel Hb-HSA3 cluster with antioxidant activities and its O2 complex stable in aqueous H2O2 solution. We used an approach of incorporating a Pt nanoparticle (PtNP) into the exterior HSA unit of the cluster. A citrate reduced PtNP (1.8 nm diameter) was bound tightly within the cleft of free HSA with a binding constant (K) of 1.1×10(7) M(-1), generating a stable HSA-PtNP complex. This platinated protein showed high catalytic activities for dismutations of superoxide radical anions (O2•-) and hydrogen peroxide (H2O2), i.e., superoxide dismutase and catalase activities. Also, Hb-HSA3 captured PtNP into the external albumin unit (K = 1.1×10(7) M(-1)), yielding an Hb-HSA3(PtNP) cluster. The association of PtNP caused no alteration of the protein surface net charge and O2 binding affinity. The peripheral HSA-PtNP shell prevents oxidation of the core Hb, which enables the formation of an extremely stable O2 complex, even in H2O2 solution.
Collapse
Affiliation(s)
- Hitomi Hosaka
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University Tokyo, Japan
| | - Risa Haruki
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University Tokyo, Japan
| | - Kana Yamada
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University Tokyo, Japan
| | - Christoph Böttcher
- Research Center of Electron Microscopy, Institute of Chemistry and Biochemistry Freie Universität Berlin, Berlin, Germany
| | - Teruyuki Komatsu
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University Tokyo, Japan
| |
Collapse
|
40
|
Zhu L, Wang W, Shi J, Zhang W, Shen Y, Du H, Wu S. Hydrogen sulfide extends the postharvest life and enhances antioxidant activity of kiwifruit during storage. J Sci Food Agric 2014; 94:2699-2704. [PMID: 25328925 DOI: 10.1002/jsfa.6613] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
BACKGROUND Exogenous hydrogen sulfide (H₂S) treatment can prolong the postharvest life of cut flowers and strawberries. Little work has been done to explore the effects of H₂S on respiratory climacteric fruits such as kiwifruits during storage. Therefore the aim of the present study was to evaluate the effects of H₂S treatment at concentrations of 15–1000 µmol L⁻¹ on the postharvest life of kiwifruit during 25 °C storage and the role of H₂S in regulating the antioxidant defensive system of kiwifruit. RESULTS Treatments with 45 and 90 µmol L⁻¹ H₂S significantly inhibited the increase in soluble sugar content and the decrease in vitamin C (Vit C), chlorophyll content and firmness, inhibited ethylene production and both superoxide production rate (O(·2)⁻) and hydrogen peroxide content. Kiwifruits with 45 and 90 µmol L⁻¹ H₂S exhibited significantly higher activities of superoxide dismutase, catalase and peroxidase. Treatment with 180 µmol L⁻¹ H₂S promoted the ripening of kiwifruits. CONCLUSION Treatments with 45 and 90 µmol L⁻¹ H₂S could delay the maturation and senescence of kiwifruits and maintain higher titratable acid (TA) and Vit C during eating-ripe storage by inhibiting ethylene production, improving protective enzyme activities and decreasing the accumulation of reactive oxygen species to protect the cell membrane during storage.
Collapse
|
41
|
Fu J, Sun Y, Chu X, Xu Y, Hu T. Exogenous 5-aminolevulenic acid promotes seed germination in Elymus nutans against oxidative damage induced by cold stress. PLoS One 2014; 9:e107152. [PMID: 25207651 PMCID: PMC4160216 DOI: 10.1371/journal.pone.0107152] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [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: 05/25/2014] [Accepted: 08/10/2014] [Indexed: 11/18/2022] Open
Abstract
The protective effects of 5-aminolevulenic acid (ALA) on germination of Elymus nutans Griseb. seeds under cold stress were investigated. Seeds of E. nutans (Damxung, DX and Zhengdao, ZD) were pre-soaked with various concentrations (0, 0.1, 0.5, 1, 5, 10 and 25 mg l−1) of ALA for 24 h before germination under cold stress (5°C). Seeds of ZD were more susceptible to cold stress than DX seeds. Both seeds treated with ALA at low concentrations (0.1–1 mg l−1) had higher final germination percentage (FGP) and dry weight at 5°C than non-ALA-treated seeds, whereas exposure to higher ALA concentrations (5–25 mg l−1) brought about a dose dependent decrease. The highest FGP and dry weight of germinating seeds were obtained from seeds pre-soaked with 1 mg l−1 ALA. After 5 d of cold stress, pretreatment with ALA provided significant protection against cold stress in the germinating seeds, significantly enhancing seed respiration rate and ATP synthesis. ALA pre-treatment also increased reduced glutathione (GSH), ascorbic acid (AsA), total glutathione, and total ascorbate concentrations, and the activities of superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and glutathione reductase (GR), whereas decreased the contents of malondialdehyde (MDA) and hydrogen peroxide (H2O2), and superoxide radical (O2•−) release in both germinating seeds under cold stress. In addition, application of ALA increased H+-ATPase activity and endogenous ALA concentration compared with cold stress alone. Results indicate that ALA considered as an endogenous plant growth regulator could effectively protect E. nutans seeds from cold-induced oxidative damage during germination without any adverse effect.
Collapse
Affiliation(s)
- Juanjuan Fu
- Department of Grassland Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi Province, P. R. China
| | - Yongfang Sun
- Department of Grassland Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi Province, P. R. China
| | - Xitong Chu
- Department of Grassland Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi Province, P. R. China
| | - Yuefei Xu
- Department of Grassland Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi Province, P. R. China
- * E-mail: (YX); (TH)
| | - Tianming Hu
- Department of Grassland Science, College of Animal Science and Technology, Northwest A&F University, Yangling, Shaanxi Province, P. R. China
- * E-mail: (YX); (TH)
| |
Collapse
|
42
|
Singh BN, Rawat AKS, Khan W, Naqvi AH, Singh BR. Biosynthesis of stable antioxidant ZnO nanoparticles by Pseudomonas aeruginosa rhamnolipids. PLoS One 2014; 9:e106937. [PMID: 25187953 PMCID: PMC4154833 DOI: 10.1371/journal.pone.0106937] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [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: 03/21/2014] [Accepted: 08/10/2014] [Indexed: 01/24/2023] Open
Abstract
During the last several years, various chemical methods have been used for synthesis of a variety of metal nanoparticles. Most of these methods pose severe environmental problems and biological risks; therefore the present study reports a biological route for synthesis of zinc oxide nanoparticles using Pseudomonas aeruginosa rhamnolipids (RLs) (denoted as RL@ZnO) and their antioxidant property. Formation of stable RL@ZnO nanoparticles gave mostly spherical particles with a particle size ranging from 35 to 80 nm. The RL@ZnO nanoparticles were characterized by UV-visible (UV–vis) spectroscopy, scanning electron microscopy, transmission electron microscopy, dynamic light scattering, Fourier transform infrared spectroscopy, X-ray diffraction (XRD), and thermal gravimetric analysis. The UV–vis spectra presented a characteristic absorbance peak at ∼360 nm for synthesized RL@ZnO nanoparticles. The XRD spectrum showed that RL@ZnO nanoparticles are crystalline in nature and have typical wurtzite type polycrystals. Antioxidant potential of RL@ZnO nanoparticles was assessed through 2,2–diphenyl-1-picrylhydrazyl (DPPH), hydroxyl, and superoxide anion free radicals with varying concentration and time of the storage up to 15 months, while it was found to decline in bare ZnO nanoparticles. Similarly, the inhibitory effects on β-carotene oxidation and lipid peroxidation were also observed. These results elucidate the significance of P. aeruginosa RL as effective stabilizing agents to develop surface protective ZnO nanoparticles, which can be used as promising antioxidants in biological system.
Collapse
Affiliation(s)
- Brahma Nand Singh
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
| | - Ajay Kumar Singh Rawat
- Pharmacognosy and Ethnopharmacology Division, CSIR-National Botanical Research Institute, Lucknow, Uttar Pradesh, India
| | - Wasi Khan
- Centre of Excellence in Materials Science (Nanomaterials), Department of Applied Physics, Z. H. College of Engineering and Technology, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Alim H. Naqvi
- Centre of Excellence in Materials Science (Nanomaterials), Department of Applied Physics, Z. H. College of Engineering and Technology, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
| | - Braj Raj Singh
- Centre of Excellence in Materials Science (Nanomaterials), Department of Applied Physics, Z. H. College of Engineering and Technology, Aligarh Muslim University, Aligarh, Uttar Pradesh, India
- * E-mail:
| |
Collapse
|
43
|
Stinghen AEM, Chillon JM, Massy ZA, Boullier A. Differential effects of indoxyl sulfate and inorganic phosphate in a murine cerebral endothelial cell line (bEnd.3). Toxins (Basel) 2014; 6:1742-60. [PMID: 24902077 PMCID: PMC4073127 DOI: 10.3390/toxins6061742] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Revised: 05/17/2014] [Accepted: 05/26/2014] [Indexed: 12/29/2022] Open
Abstract
Endothelial dysfunction plays a key role in stroke in chronic kidney disease patients. To explore the underlying mechanisms, we evaluated the effects of two uremic toxins on cerebral endothelium function. bEnd.3 cells were exposed to indoxyl sulfate (IS) and inorganic phosphate (Pi). Nitric oxide (NO), reactive oxygen species (ROS) and O2•⁻ were measured using specific fluorophores. Peroxynitrite and eNOS uncoupling were evaluated using ebselen, a peroxide scavenger, and tetrahydrobiopterin (BH₄), respectively. Cell viability decreased after IS or Pi treatment (p < 0.01). Both toxins reduced NO production (IS, p < 0.05; Pi, p < 0.001) and induced ROS production (p < 0.001). IS and 2 mM Pi reduced O2•⁻ production (p < 0.001). Antioxidant pretreatment reduced ROS levels in both IS- and Pi-treated cells, but a more marked reduction of O2•⁻ production was observed in Pi-treated cells (p < 0.001). Ebselen reduced the ROS production induced by the two toxins (p < 0.001); suggesting a role of peroxynitrite in this process. BH₄ addition significantly reduced O2•⁻ and increased NO production in Pi-treated cells (p < 0.001), suggesting eNOS uncoupling, but had no effect in IS-treated cells. This study shows, for the first time, that IS and Pi induce cerebral endothelial dysfunction by decreasing NO levels due to enhanced oxidative stress. However, Pi appears to be more deleterious, as it also induces eNOS uncoupling.
Collapse
Affiliation(s)
- Andréa E M Stinghen
- Inserm U1088, Department of Pharmacy, 1 rue des Louvels, Amiens F-80037 Cédex 1, France.
| | - Jean-Marc Chillon
- Inserm U1088, Department of Pharmacy, 1 rue des Louvels, Amiens F-80037 Cédex 1, France.
| | - Ziad A Massy
- Inserm U1088, Department of Pharmacy, 1 rue des Louvels, Amiens F-80037 Cédex 1, France.
| | - Agnès Boullier
- Inserm U1088, Department of Pharmacy, 1 rue des Louvels, Amiens F-80037 Cédex 1, France.
| |
Collapse
|
44
|
Liang CP, Chang CH, Liang CC, Hung KY, Hsieh CW. In vitro antioxidant activities, free radical scavenging capacity, and tyrosinase inhibitory of flavonoid compounds and ferulic acid from Spiranthes sinensis (Pers.) Ames. Molecules 2014; 19:4681-94. [PMID: 24739930 PMCID: PMC6271946 DOI: 10.3390/molecules19044681] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [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: 01/24/2014] [Revised: 04/02/2014] [Accepted: 04/03/2014] [Indexed: 11/30/2022] Open
Abstract
In this study, ultrasound-assisted extraction (UAE) and other methods of extracting flavonoid compounds and ferulic acid (FA) from S. sinensis were investigated. Five different extraction methods, including water extraction (W), water extraction using UAE (W+U), 75% ethanol extraction (E), 75% ethanol extraction using UAE (E+U), and supercritical CO2 extraction (SFE) were applied in the extraction of bioactive compounds (flavonoids and ferulic acid) in order to compare their efficiency. The highest yield of flavonoids (4.28 mg/g) and ferulic acid (4.13 mg/g) content was detected in the E+U extract. Furthermore, S. sinensis extracts obtained by E+U show high antioxidant activity, and IC50 values of 0.47 mg/mL for DPPH radicals and 0.205 mg/mL for metal chelating activity. The total antioxidant assay shows superoxide radical scavenging capacity and in vitro mushroom tyrosinase inhibition in a dose-dependent manner, suggesting that E+U can be used for extraction of bioactive compounds from S. sinensis.
Collapse
Affiliation(s)
| | - Chia Hao Chang
- Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Changhua 51591, Taiwan.
| | | | - Kuei Yu Hung
- Pemay Biomedical Technology Corp, Taichung 41348, Taiwan.
| | - Chang Wei Hsieh
- Department of Medicinal Botanicals and Health Applications, Da-Yeh University, Changhua 51591, Taiwan.
| |
Collapse
|
45
|
Chen IH, Du YC, Hwang TL, Chen IF, Lan YH, Yen HF, Chang FR, Wu YC. Anti-inflammatory triterpenoids from the stems of Microtropis fokienensis. Molecules 2014; 19:4608-23. [PMID: 24736870 PMCID: PMC6271155 DOI: 10.3390/molecules19044608] [Citation(s) in RCA: 12] [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: 03/03/2014] [Revised: 04/09/2014] [Accepted: 04/09/2014] [Indexed: 11/16/2022] Open
Abstract
Three new ursane- and four new oleanane- type triterpenoids 1-7 were isolated, along with six known compounds 8-13, from the methanolic extract of Microtropis fokienensis. All structures were elucidated by mass and NMR spectroscopic methods. The isolates 4-10 and known compounds 14-17 that were previously isolated from this material were evaluated for anti-inflammatory activity based on effects against superoxide anion generation and elastase release by neutrophils in response to fMLP/CB. 11α,30-Dihydroxy-2,3-seco-olean-12-en-2,3-dioic anhydride (7) was the first triterpene anhydride from the genus of Microtropis to have the ring A expanded to a seven-membered ring; it showed significant anti-inflammatory activity against superoxide anion generation and elastase release. Unexpectedly, 30-hydroxy-2,3-seco-lup-20(29)-ene-2,3-dioic acid (17) showed the best effect against superoxide anion generation and elastase release with IC50 values of 0.06±0.01 and 1.03±0.35 µg/mL, respectively. Compound 17 had a dioic acid function, and compound 7 had an anhydride function modification in ring A; both showed promising activity in the target assays.
Collapse
Affiliation(s)
- I-Hsiao Chen
- School of Chinese Medicine for Post Baccalaureate, College of Medicine, I Shou University, Kaohsiung 82445, Taiwan.
| | - Ying-Chi Du
- Department of Botanicals, Medical and Pharmaceutical Industry Technology and Development Center, New Taipei City 248, Taiwan.
| | - Tsong-Long Hwang
- Graduate Institute of Natural Products, College of Medicine, Chang Gung University, Taoyuan 333, Taiwan.
| | - I-Fen Chen
- Department of Biomedical Engineering, College of Medicine, I Shou University, Kaohsiung 82445, Taiwan.
| | - Yu-Hsuan Lan
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan.
| | - Hsin-Fu Yen
- National Museum of Natural Science, Taichung 404, Taiwan.
| | - Fang-Rong Chang
- Graduate Institute of Natural Products, College of Pharmacy, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yang-Chang Wu
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung 404, Taiwan.
| |
Collapse
|
46
|
Ao GZ, Chu XJ, Ji YY, Wang JW. Antioxidant properties and PC12 cell protective effects of a novel curcumin analogue (2E,6E)-2,6-bis(3,5- dimethoxybenzylidene)cyclohexanone (MCH). Int J Mol Sci 2014; 15:3970-88. [PMID: 24603537 PMCID: PMC3975378 DOI: 10.3390/ijms15033970] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2013] [Revised: 01/16/2014] [Accepted: 01/21/2014] [Indexed: 12/15/2022] Open
Abstract
The antioxidative properties of a novel curcumin analogue (2E,6E)-2,6-bis(3,5-dimethoxybenzylidene)cyclohexanone (MCH) were assessed by several in vitro models, including superoxide anion, hydroxyl radical and 1,1-diphenyl-2-picrylhydrazyl (DPPH) radical scavenging and PC12 cell protection from H2O2 damage. MCH displayed superior O2•- quenching abilities compared to curcumin and vitamin C. In vitro stability of MCH was also improved compared with curcumin. Exposure of PC12 cells to 150 µM H2O2 caused a decrease of antioxidant enzyme activities, glutathione (GSH) loss, an increase in malondialdehyde (MDA) level, and leakage of lactate dehydrogenase (LDH), cell apoptosis and reduction in cell viability. Pretreatment of the cells with MCH at 0.63-5.00 µM before H2O2 exposure significantly attenuated those changes in a dose-dependent manner. MCH enhanced cellular expression of transcription factor NF-E2-related factor 2 (Nrf2) at the transcriptional level. Moreover, MCH could mitigate intracellular accumulation of reactive oxygen species (ROS), the loss of mitochondrial membrane potential (MMP), and the increase of cleaved caspase-3 activity induced by H2O2. These results show that MCH protects PC12 cells from H2O2 injury by modulating endogenous antioxidant enzymes, scavenging ROS, activating the Nrf2 cytoprotective pathway and prevention of apoptosis.
Collapse
Affiliation(s)
- Gui-Zhen Ao
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
| | - Xiao-Jing Chu
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
| | - Yuan-Yuan Ji
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
| | - Jian-Wen Wang
- College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, China.
| |
Collapse
|
47
|
Ren X, He L, Cheng J, Chang J. Optimization of the solid-state fermentation and properties of a polysaccharide from Paecilomyces cicadae (Miquel) Samson and its antioxidant activities in vitro. PLoS One 2014; 9:e87578. [PMID: 24498337 PMCID: PMC3911990 DOI: 10.1371/journal.pone.0087578] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [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: 10/17/2013] [Accepted: 12/23/2013] [Indexed: 11/20/2022] Open
Abstract
The culture conditions for the yield of a polysaccharide (PCPS) produced by Paecilomyces cicadae (Miquel) Samson on solid-state fermentation were investigated using response surface methodology (RSM). Plackett-Burman design (PBD) was applied to screen out significant factors, followed by the paths of steepest ascent to move to the nearest region of maximum response. Then Box-Behnken design (BBD) was conducted to optimize the final levels of the culture conditions. After analyzing the regression equation and the response surface contour plots, relative humidity 56.07%, inoculum 13.51 mL/100 g and temperature 27.09°C were found to be the optimal key parameters for PCPS production. The maximum predicted yield of PCPS was 10.76 mg/g under the optimized conditions. The resulting PCPS (FPCPS) generated at optimal conditions was purified by chromatography column and found to be composed of mannose (43.2%), rhamnose (32.1%), xylose (14.5%) and arabinose (10.2%). Based on the size exclusion chromatography combined with multi-angle laser light scattering (SEC-MALLS) analysis, FPCPS adopted a Gaussian coil conformation in 0.1 M NaNO3 solution with 3.75 × 10(6) g/mol of the weight-average molar mass (Mw) and 41.1 nm of the root-mean square radius (Rg(2))z (1/2). Furthermore, both of the polysaccharides were revealed to have strong antioxidant activities by evaluating in DPPH radical, superoxide radicals and hydroxyl radical assay. These data suggest the polysaccharides of Paecilomyces cicadae (Miquel) Samson produced by solid-state fermentation could be explored as potential natural antioxidants.
Collapse
Affiliation(s)
- Xueyong Ren
- College of Materials Science and Technology, Beijing Forestry University, Beijing, P.R. China
| | - Liang He
- Key Laboratory of Biological and Chemical Utilization of Zhejiang Forest Resources, Institute of Biological Technology, Zhejiang Forestry Academy, Hangzhou, P.R. China
| | - Junwen Cheng
- Key Laboratory of Biological and Chemical Utilization of Zhejiang Forest Resources, Institute of Biological Technology, Zhejiang Forestry Academy, Hangzhou, P.R. China
| | - Jianmin Chang
- College of Materials Science and Technology, Beijing Forestry University, Beijing, P.R. China
| |
Collapse
|
48
|
Russell FD, Hamilton KD. Nutrient deprivation increases vulnerability of endothelial cells to proinflammatory insults. Free Radic Biol Med 2014; 67:408-15. [PMID: 24334251 DOI: 10.1016/j.freeradbiomed.2013.12.007] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 12/05/2013] [Accepted: 12/06/2013] [Indexed: 11/21/2022]
Abstract
Nutrient deprivation is a stimulus for oxidative stress and is an established method for induction of cell autophagy and apoptosis. The aims of this study were to identify conditions that evoke superoxide production in cultured human umbilical vein endothelial cells (HUVECs), determine the mechanism of action for this response, and examine whether the stimulus might facilitate the adhesion of human isolated neutrophils to the HUVECs. HUVECs were incubated in M199 medium under conditions of serum starvation (serum-free M199 medium), low serum (medium containing 2% fetal calf serum), and high serum (medium containing 20% fetal calf serum). HUVECs were also incubated under proinflammatory conditions, in medium supplemented with 50ng/ml tumor necrosis factor-α (TNF-α) or neutrophils preactivated with 10nM phorbol 12-myristate 13-acetate (PMA). Superoxide production was increased fourfold in serum-starved HUVECs compared to cells incubated in 20% medium, and this was reduced by inhibitors of the mitochondrial electron transport chain and mitochondrial Ca(2+) uniporter. Superoxide production was 23.6% higher in HUVECs incubated with TNF-α in 2% medium compared to 2% medium alone, but unchanged with TNF-α in 20% medium. PMA-activated neutrophils adhered to morphologically aberrant HUVECs, which were mainly evident under the low-serum condition. The findings show a role of mitochondrial enzymes in superoxide production in response to nutrient deprivation and suggest that proinflammatory responses in HUVECs become manifest when HUVECs are in an already-compromised state.
Collapse
Affiliation(s)
- Fraser D Russell
- Inflammation and Healing Research Cluster, School of Health and Sport Sciences, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia.
| | - Karina D Hamilton
- Inflammation and Healing Research Cluster, School of Health and Sport Sciences, University of the Sunshine Coast, Maroochydore, QLD 4558, Australia
| |
Collapse
|
49
|
Jiménez-Romero C, Mayer AMS, Rodríguez AD. Dactyloditerpenol acetate, a new prenylbisabolane-type diterpene from Aplysia dactylomela with significant in vitro anti-neuroinflammatory activity. Bioorg Med Chem Lett 2014; 24:344-8. [PMID: 24279991 PMCID: PMC4249741 DOI: 10.1016/j.bmcl.2013.11.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2013] [Revised: 11/02/2013] [Accepted: 11/05/2013] [Indexed: 11/26/2022]
Abstract
A new regular diterpene possessing an unusual 1,6-anti-3-methylcyclohex-2-en-1-ol ring system, dactyloditerpenol acetate (1), has been extracted from the tropical sea hare Aplysia dactylomela and its stereostructure elucidated by spectroscopic methods. The absolute configuration of 1 was determined as 1S, 6S, 7R, 10S, and 11R by application of Kishi's method for the assignment of absolute configuration of alcohols. The new diterpene potently inhibited in vitro thromboxane B2 (TXB2) (IC50 0.4μM) and superoxide anion (O2(-)) (IC50 1μM) generation from Escherichia coli lipopolysaccharide (LPS)-activated rat neonatal microglia, with concomitant low short-term toxicity.
Collapse
Affiliation(s)
- Carlos Jiménez-Romero
- Department of Chemistry, University of Puerto Rico, PO Box 23346, UPR Station, San Juan, PR 00931-3346, United States
| | - Alejandro M S Mayer
- Department of Pharmacology, Chicago College of Osteopathic Medicine, Midwestern University, 555, 31st Street, Downers Grove, IL 60515, United States
| | - Abimael D Rodríguez
- Department of Chemistry, University of Puerto Rico, PO Box 23346, UPR Station, San Juan, PR 00931-3346, United States.
| |
Collapse
|
50
|
Sharipov RR, Kotsiuruba AV, Kop"iak BS, Sahach VF. [Induction of oxidative stress in heart mitochondria in brain focal ischemia-reperfusion and protective effect of ecdysterone]. Fiziol Zh (1994) 2014; 60:11-17. [PMID: 25095666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Based on the fact that the acute phase of ischemic stroke is accompanied by the development of heart damage, manifestations of which are oxidative stress, morphological changes in the myocardium, in the model of brain focal ischemia-reperfusion, we investigated the oxidative stress in rat heart mitochondria and possible mechanisms of cardioprotective effect of ecdysterone. Under the conditions of brain focal ischemia-reperfusion, there is an increase rate of the generation of reactive oxygen species: superoxide (*O2-) and hydroxyl radicals (*OH), pools of stable hydrogen peroxide (H2O2), accumulate products of lipid peroxidation (diene conjugates and malonic dialdehyde), as a result of activation xanthine oxidase (marker uric acid), lipooxygenase (marker leukotriene C4) and cyclooxygenase (marker tromboksane B2) ways of *O2-(generating). In animals that received ecdysterone for 18 days, under conditions of brain focal ischemia-reperfusion, the rate of reactive oxygen species generation and the pools of lipid peroxidation products were decreased, and the survival of animals was increased. The obtained results support the development of oxidative stress in heart mitochondria of rats, powerful antiradical properties ofecdysterone, its cardioprotective effect, in conditions of brain focal ischemia-reperfusion.
Collapse
|