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Bezerra LS, Magnani M, Pimentel TC, de Oliveira JCPL, Freire FMDS, de Almeida AJPO, Rezende MSDA, Gonçalves IGA, de Medeiros IA, Veras RC. Yeast carboxymethyl-glucan improves endothelial function and inhibits platelet aggregation in spontaneously hypertensive rats. Food Funct 2022; 13:5406-5415. [PMID: 35474367 DOI: 10.1039/d1fo03492h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Carboxymethyl-glucan is a semi-synthetic derivative of β-D-glucan, a polysaccharide widely found in several natural sources, such as yeast, fungi, and cereals. This compound has beneficial effects on health and is considered an important immunomodulator. However, studies exploring carboxymethyl-glucan bioactivity in cardiovascular health remain lacking, mainly in hypertension. Thus, this study sought to expand understanding of the effects of carboxymethyl-glucan on vascular and platelet functions in a hypertensive animal model. Spontaneously hypertensive rats and their normotensive Wistar-Kyoto controls were assigned to five groups: control, carboxymethyl-glucan (60 mg kg-1), control spontaneously hypertensive rats, spontaneously hypertensive rats carboxymethyl-glucan (20 mg kg-1), and spontaneously hypertensive rats carboxymethyl-glucan (60 mg kg-1). Animals were treated for four weeks with carboxymethyl-glucan at doses of 20 and 60 mg kg-1 orally, and control rats received saline as a placebo. Vascular reactivity, platelet aggregation, and reactive oxygen species production were evaluated at the end of treatment. The results showed that carboxymethyl-glucan improved vascular function and reduced platelet aggregation, mainly at a 60 mg kg-1 dose. However, despite these effects, there was no reduction in levels of reactive oxygen species. These findings suggested that carboxymethyl-glucan modulates endothelial function. It also acts as a platelet antiaggregant, which is an interesting resource for managing hypertension and its thrombotic complications.
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Affiliation(s)
- Lorena Soares Bezerra
- Post-Graduate Program in Nutritional Sciences, Health Sciences Center, Federal University of Paraíba, Campus I, 58059-900, João Pessoa, Paraíba, Brazil.
| | - Marciane Magnani
- Post-Graduate Program in Nutritional Sciences, Health Sciences Center, Federal University of Paraíba, Campus I, 58059-900, João Pessoa, Paraíba, Brazil. .,Department of Food Engineering, Federal University of Paraíba (UFPB), Brazil
| | | | | | | | - Arthur José Pontes Oliveira de Almeida
- Post-Graduate Program in Development and Technological Innovation in Medicines, Health Sciences Center, Federal University of Paraíba, Campus I, 58059-900, João Pessoa, Paraíba - Brazil
| | - Mathania Silva de Almeida Rezende
- Post-Graduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, Campus I, 58059-900, João Pessoa, Paraíba - Brazil
| | | | - Isac Almeida de Medeiros
- Department of Pharmaceutical Sciences, Health Sciences Center, UFPB, Campus I, 58059-900, João Pessoa, Paraíba - Brazil.,Post-Graduate Program in Bioactive Natural and Synthetic Products, Health Sciences Center, Federal University of Paraíba, Campus I, 58059-900, João Pessoa, Paraíba - Brazil
| | - Robson Cavalcante Veras
- Post-Graduate Program in Nutritional Sciences, Health Sciences Center, Federal University of Paraíba, Campus I, 58059-900, João Pessoa, Paraíba, Brazil. .,Department of Pharmaceutical Sciences, Health Sciences Center, UFPB, Campus I, 58059-900, João Pessoa, Paraíba - Brazil
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Qian D, Tian J, Wang S, Shan X, Zhao P, Chen H, Xu M, Guo W, Zhang C, Lu R. Trans-cinnamaldehyde protects against phenylephrine-induced cardiomyocyte hypertrophy through the CaMKII/ERK pathway. BMC Complement Med Ther 2022; 22:115. [PMID: 35468773 PMCID: PMC9040265 DOI: 10.1186/s12906-022-03594-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 04/14/2022] [Indexed: 01/13/2023] Open
Abstract
BACKGROUND Trans-cinnamaldehyde (TCA) is one of the main pharmaceutical ingredients of Cinnamomum cassia Presl, which has been shown to have therapeutic effects on a variety of cardiovascular diseases. This study was carried out to characterize and reveal the underlying mechanisms of the protective effects of TCA against cardiac hypertrophy. METHODS We used phenylephrine (PE) to induce cardiac hypertrophy and treated with TCA in vivo and in vitro. In neonatal rat cardiomyocytes (NRCMs), RNA sequencing and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analysis were carried out to identify potential pathways of TCA. Then, the phosphorylation and nuclear localization of calcium/calmodulin-dependent protein kinase II (CaMKII) and extracellular signal-related kinase (ERK) were detected. In adult mouse cardiomyocytes (AMCMs), calcium transients, calcium sparks, sarcomere shortening and the phosphorylation of several key proteins for calcium handling were evaluated. For mouse in vivo experiments, cardiac hypertrophy was evaluated by assessing morphological changes, echocardiographic parameters, and the expression of hypertrophic genes and proteins. RESULTS TCA suppressed PE-induced cardiac hypertrophy and the phosphorylation and nuclear localization of CaMKII and ERK in NRCMs. Our data also demonstrate that TCA blocked the hyperphosphorylation of ryanodine receptor type 2 (RyR2) and phospholamban (PLN) and restored Ca2+ handling and sarcomere shortening in AMCMs. Moreover, our data revealed that TCA alleviated PE-induced cardiac hypertrophy in adult mice and downregulated the phosphorylation of CaMKII and ERK. CONCLUSION TCA has a protective effect against PE-induced cardiac hypertrophy that may be associated with the inhibition of the CaMKII/ERK pathway.
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Affiliation(s)
- Dongdong Qian
- School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Jing Tian
- School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
- Department of Endocrinology, Shuguang Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Sining Wang
- Department of Comprehensive Internal Medicine, Tongde Hospital of Zhejiang Province, Hangzhou, 310012, China
| | - Xiaoli Shan
- Public Experiment Platform, School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Pei Zhao
- Public Experiment Platform, School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Huihua Chen
- School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Ming Xu
- Department of Physiology, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Wei Guo
- Department of Pathology, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China
| | - Chen Zhang
- Department of Pathology, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
| | - Rong Lu
- School of Basic Medical Science, Shanghai University of Traditional Chinese Medicine, Shanghai, 201203, China.
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The Effect of Cinnamaldehyde on iNOS Activity and NO-Induced Islet Insulin Secretion in High-Fat-Diet Rats. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:9970678. [PMID: 34335851 PMCID: PMC8292039 DOI: 10.1155/2021/9970678] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/07/2021] [Accepted: 07/03/2021] [Indexed: 10/28/2022]
Abstract
Introduction Obesity and insulin resistance are associated with alterations in nitric oxide level and insulin secretion. Previous studies demonstrated that cinnamaldehyde (CNMA) improved islet insulin secretion and restored nitric oxide (NO) level, but its underlying mechanisms have not been investigated. This study aimed to investigate the effect of CNMA on inducible nitric oxide synthase (iNOS) activity and NO-induced islet insulin secretion in high-fat-diet (HFD) treated rats. Materials and Methods Forty male Wistar rats (12 weeks old) were randomly divided into four equal groups, namely, control, CNMA, HFD, and HFD + CNMA. Control and CNMA groups were treated with standard laboratory animals' diet, while HFD and HDF + CNMA groups were fed with an HFD diet enriched with 25% W/W tail fat for 16 weeks. CNMA was administrated orally (20 mg/kg body weight, daily) during the study period. Islet insulin secretion and the inducible NOS activity in the presence or absence of L-NAME (NO synthase inhibitor, 5 mmol/L) were evaluated. Results L-NAME-suppressed insulin secretion in control, HFD, and HFD + CNMA groups; however, in the CNMA group, it could not exhibit such effect (P < 0.01). Islets of HFD-treated animals showed significantly higher iNOS activity than controls. CNMA treatment significantly suppressed iNOS activities in CNMA and HFD + CNMA groups compared with control and HFD, respectively. Conclusion These results suggest that the beneficial effect of CNMA on insulin secretion might be due to its inhibitory effect on iNOS activity.
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Schepetkin IA, Plotnikov MB, Khlebnikov AI, Plotnikova TM, Quinn MT. Oximes: Novel Therapeutics with Anticancer and Anti-Inflammatory Potential. Biomolecules 2021; 11:biom11060777. [PMID: 34067242 PMCID: PMC8224626 DOI: 10.3390/biom11060777] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 02/07/2023] Open
Abstract
Oximes have been studied for decades because of their significant roles as acetylcholinesterase reactivators. Over the last twenty years, a large number of oximes have been reported with useful pharmaceutical properties, including compounds with antibacterial, anticancer, anti-arthritis, and anti-stroke activities. Many oximes are kinase inhibitors and have been shown to inhibit over 40 different kinases, including AMP-activated protein kinase (AMPK), phosphatidylinositol 3-kinase (PI3K), cyclin-dependent kinase (CDK), serine/threonine kinases glycogen synthase kinase 3 α/β (GSK-3α/β), Aurora A, B-Raf, Chk1, death-associated protein-kinase-related 2 (DRAK2), phosphorylase kinase (PhK), serum and glucocorticoid-regulated kinase (SGK), Janus tyrosine kinase (JAK), and multiple receptor and non-receptor tyrosine kinases. Some oximes are inhibitors of lipoxygenase 5, human neutrophil elastase, and proteinase 3. The oxime group contains two H-bond acceptors (nitrogen and oxygen atoms) and one H-bond donor (OH group), versus only one H-bond acceptor present in carbonyl groups. This feature, together with the high polarity of oxime groups, may lead to a significantly different mode of interaction with receptor binding sites compared to corresponding carbonyl compounds, despite small changes in the total size and shape of the compound. In addition, oximes can generate nitric oxide. This review is focused on oximes as kinase inhibitors with anticancer and anti-inflammatory activities. Oximes with non-kinase targets or mechanisms of anti-inflammatory activity are also discussed.
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Affiliation(s)
- Igor A. Schepetkin
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT 59717, USA;
| | - Mark B. Plotnikov
- Goldberg Research Institute of Pharmacology and Regenerative Medicine, Tomsk National Research Medical Center, Russian Academy of Sciences, 634028 Tomsk, Russia;
| | - Andrei I. Khlebnikov
- Kizhner Research Center, National Research Tomsk Polytechnic University, 634050 Tomsk, Russia;
- Scientific Research Institute of Biological Medicine, Altai State University, 656049 Barnaul, Russia
| | - Tatiana M. Plotnikova
- Department of Pharmacology, Siberian State Medical University, 634050 Tomsk, Russia;
| | - Mark T. Quinn
- Department of Microbiology and Cell Biology, Montana State University, Bozeman, MT 59717, USA;
- Correspondence: ; Tel.: +1-406-994-4707; Fax: +1-406-994-4303
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Gürer B, Kertmen H, Kuru Bektaşoğlu P, Öztürk ÖÇ, Bozkurt H, Karakoç A, Arıkök AT, Çelikoğlu E. The effects of Cinnamaldehyde on early brain injury and cerebral vasospasm following experimental subarachnoid hemorrhage in rabbits. Metab Brain Dis 2019; 34:1737-1746. [PMID: 31444631 DOI: 10.1007/s11011-019-00480-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Accepted: 08/08/2019] [Indexed: 12/26/2022]
Abstract
The neuroprotective and vasodilatory effects of cinnamaldehyde have been widely studied and documented. On the basis of these findings, we hypothesized that cinnamaldehyde exhibits therapeutic effects on subarachnoid hemorrhage-induced early brain injury and cerebral vasospasm. Thirty-two adult male New Zealand white rabbits were randomly divided into four groups of eight rabbits: control, subarachnoid hemorrhage, subarachnoid hemorrhage + vehicle, and subarachnoid hemorrhage + cinnamaldehyde. An intraperitoneal dose of 50 mg/kg cinnamaldehyde was administered 5 min following an intracisternal blood injection, followed by three further daily injections at identical doses. The animals were sacrificed 72 h after subarachnoid hemorrhage was induced. The cross-sectional areas and arterial wall thicknesses of the basilar artery were measured and hippocampal degeneration scores were evaluated. Treatment with cinnamaldehyde was effective in providing neuroprotection and attenuating cerebral vasospasm after subarachnoid hemorrhage in rabbits. It effectively increased the cross-sectional areas of the basilar artery and reduced the arterial wall thickness; in addition, hippocampal degeneration scores were lower in the cinnamaldehyde group. The findings of this study showed, for the first time to our knowledge, that cinnamaldehyde exhibits neuroprotective activity against subarachnoid hemorrhage-induced early brain injury and that it can prevent vasospasm. Potential mechanisms underlying the neuroprotection and vasodilation were discussed. Cinnamaldehyde could play a role in subarachnoid hemorrhage treatment.
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Affiliation(s)
- Bora Gürer
- Fatih Sultan Mehmet Education and Research Hospital, Department of Neurosurgery, University of Health Sciences, Zümrütevler mh. Emek cad. Nish Adalar Sitesi 36. Blok Daire 38, 34852, Maltepe, İstanbul, Turkey.
| | - Hayri Kertmen
- Diskapi Yildirim Beyazit Education and Research Hospital, Department of Neurosurgery, University of Health Sciences, Ankara, Turkey
| | - Pınar Kuru Bektaşoğlu
- Fatih Sultan Mehmet Education and Research Hospital, Department of Neurosurgery, University of Health Sciences, Zümrütevler mh. Emek cad. Nish Adalar Sitesi 36. Blok Daire 38, 34852, Maltepe, İstanbul, Turkey
- Department of Physiology, Marmara University School of Medicine, Istanbul, Turkey
| | - Özden Çağlar Öztürk
- Fatih Sultan Mehmet Education and Research Hospital, Department of Neurosurgery, University of Health Sciences, Zümrütevler mh. Emek cad. Nish Adalar Sitesi 36. Blok Daire 38, 34852, Maltepe, İstanbul, Turkey
| | - Hüseyin Bozkurt
- Department of Neurosurgery, Sivas Cumhuriyet University, Sivas, Turkey
| | | | - Ata Türker Arıkök
- Diskapi Yildirim Beyazit Education and Research Hospital, Department of Pathology, University of Health Sciences, Ankara, Turkey
| | - Erhan Çelikoğlu
- Fatih Sultan Mehmet Education and Research Hospital, Department of Neurosurgery, University of Health Sciences, Zümrütevler mh. Emek cad. Nish Adalar Sitesi 36. Blok Daire 38, 34852, Maltepe, İstanbul, Turkey
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Sahyoun T, Arrault A, Schneider R. Amidoximes and Oximes: Synthesis, Structure, and Their Key Role as NO Donors. Molecules 2019; 24:molecules24132470. [PMID: 31284390 PMCID: PMC6651102 DOI: 10.3390/molecules24132470] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 07/02/2019] [Accepted: 07/02/2019] [Indexed: 01/26/2023] Open
Abstract
Nitric oxide (NO) is naturally synthesized in the human body and presents many beneficial biological effects; in particular on the cardiovascular system. Recently; many researchers tried to develop external sources to increase the NO level in the body; for example by using amidoximes and oximes which can be oxidized in vivo and release NO. In this review; the classical methods and most recent advances for the synthesis of both amidoximes and oximes are presented first. The isomers of amidoximes and oximes and their stabilities will also be described; (Z)-amidoximes and (Z)-oximes being usually the most energetically favorable isomers. This manuscript details also the biomimetic and biological pathways involved in the oxidation of amidoximes and oximes. The key role played by cytochrome P450 or other dihydronicotinamide-adenine dinucleotide phosphate (NADPH)-dependent reductase pathways is demonstrated. Finally, amidoximes and oximes exhibit important effects on the relaxation of both aortic and tracheal rings alongside with other effects as the decrease of the arterial pressure and of the thrombi formation
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Affiliation(s)
- Tanya Sahyoun
- Laboratoire de Chimie Physique Macromoléculaire, Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France
| | - Axelle Arrault
- Laboratoire de Chimie Physique Macromoléculaire, Université de Lorraine, CNRS, LCPM, F-54000 Nancy, France.
| | - Raphaël Schneider
- Laboratoire Réactions et Génie des Procédés, Université de Lorraine, CNRS, LRGP, F-54000 Nancy, France.
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Cinnamaldehyde Ameliorates High-Glucose–Induced Oxidative Stress and Cardiomyocyte Injury Through Transient Receptor Potential Ankyrin 1. J Cardiovasc Pharmacol 2019; 74:30-37. [DOI: 10.1097/fjc.0000000000000679] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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Trans-cinnamaldehyde promotes nitric oxide release via the protein kinase-B/v-Akt murine thymoma viral oncogene -endothelial nitric oxide synthase pathway to alleviate hypertension in SHR. Cg-Leprcp/NDmcr rats. J TRADIT CHIN MED 2018. [DOI: 10.1016/s0254-6272(18)30886-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Veras RC, Silva DF, Bezerra LS, de Assis VL, de Vasconcelos WP, Alustau MDC, de Albuquerque JGF, Furtado FF, Araújo IGDA, de Azevedo FDLAA, Ribeiro TP, Barbosa-Filho JM, Gutierrez SJC, Medeiros IA. N-Salicyloyltryptamine, an N-Benzoyltryptamine Analogue, Induces Vasorelaxation through Activation of the NO/sGC Pathway and Reduction of Calcium Influx. Molecules 2018; 23:molecules23020253. [PMID: 29382081 PMCID: PMC6017111 DOI: 10.3390/molecules23020253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 01/06/2018] [Accepted: 01/12/2018] [Indexed: 11/30/2022] Open
Abstract
Benzoyltryptamine analogues act as neuroprotective and spasmolytic agents on smooth muscles. In this study, we investigated the ability of N-salicyloyltryptamine (STP) to produce vasorelaxation and determined its underlying mechanisms of action. Isolated rat mesenteric arteries with and without functional endothelium were studied in an isometric contraction system in the presence or absence of pharmacological inhibitors. Amperometric experiments were used to measure the nitric oxide (NO) levels in CD31+ cells using flow cytometry. GH3 cells were used to measure Ca2+ currents using the whole cell patch clamp technique. STP caused endothelium-dependent and -independent relaxation in mesenteric rings. The endothelial-dependent relaxations in response to STP were markedly reduced by L-NAME (endothelial NO synthase—eNOS—inhibitor), jHydroxocobalamin (NO scavenger, 30 µM) and ODQ (soluble Guanylyl Cyclase—sGC—inhibitor, 10 µM), but were not affected by the inhibition of the formation of vasoactive prostanoids. These results were reinforced by the increased NO levels observed in the amperometric experiments with freshly dispersed CD31+ cells. The endothelium-independent effect appeared to involve the inhibition of voltage-gated Ca2+ channels, due to the inhibition of the concentration-response Ca2+ curves in depolarizing solution, the increased relaxation in rings that were pre-incubated with high extracellular KCl (80 mM), and the inhibition of macroscopic Ca2+ currents. The present findings show that the activation of the NO/sGC/cGMP pathway and the inhibition of gated-voltage Ca2+ channels are the mechanisms underlying the effect of STP on mesenteric arteries.
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Affiliation(s)
- Robson Cavalcante Veras
- Department of Pharmaceutical Sciences, Federal University of Paraíba (UFPB), João Pessoa 58059-900, Brazil; (I.G.d.A.A.); (J.M.B.-F); (I.A.M.)
- Postgraduate Program of Nutrition Science/CCS/Federal University of Paraíba (UFPB);
- Correspondence: ; Tel.: +55-83-3216-7347
| | - Darizy Flávia Silva
- Department of Biorregulation, Federal University of Bahia (UFBA), Av. Reitor Miguel Calmon, S/N, Vale do Canela, Salvador 40110-902, Brazil;
| | | | - Valéria Lopes de Assis
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Walma Pereira de Vasconcelos
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Maria do Carmo Alustau
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - José George Ferreira de Albuquerque
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Fabíola Fialho Furtado
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | | | - Fátima de Lourdes Assunção Araújo de Azevedo
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Thais Porto Ribeiro
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - José Maria Barbosa-Filho
- Department of Pharmaceutical Sciences, Federal University of Paraíba (UFPB), João Pessoa 58059-900, Brazil; (I.G.d.A.A.); (J.M.B.-F); (I.A.M.)
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Stanley Juan Chavez Gutierrez
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
| | - Isac Almeida Medeiros
- Department of Pharmaceutical Sciences, Federal University of Paraíba (UFPB), João Pessoa 58059-900, Brazil; (I.G.d.A.A.); (J.M.B.-F); (I.A.M.)
- Postgraduate Program of Natural Products and Bioactive Synthetics/CCS/Universidade Federal da Paraíba (UFPB), João Pessoa 58059-900, Brazil; (V.L.d.A.); (W.P.d.V.); (M.d.C.A.); (J.G.F.d.A.); (F.F.F.); (F.d.L.A.A.d.A.); (T.P.R.); (S.J.C.G.)
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Effect of Keishibukuryogan, a Japanese Traditional Kampo Prescription, on Improvement of Microcirculation and Oketsu and Induction of Endothelial Nitric Oxide: A Live Imaging Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 2017:3620130. [PMID: 28785289 PMCID: PMC5530408 DOI: 10.1155/2017/3620130] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Revised: 06/05/2017] [Accepted: 06/12/2017] [Indexed: 01/09/2023]
Abstract
Oketsu is a characteristic condition that plays an important role in Kampo, Japanese traditional medicine, and includes multiple aspects of hemodynamic disorders. This study aims to clarify the microcirculation of Oketsu and the pharmacological effect of Keishibukuryogan, an anti-Oketsu Kampo prescription, using live imaging techniques. Oral administration of Keishibukuryogan induced significant vasodilation of murine subcutaneous arterioles compared to the preadministration level. This vasodilatation peaked 60 min after administration and persisted for 90 min. The blood velocity in the subcutaneous capillary was also increased by Keishibukuryogan in generally the same manner. In rat mesenteric arterioles, Keishibukuryogan administration improved microhemodynamic parameters, including the resolution of erythrocyte congestion and the cell-free layer, which are representative of Oketsu pathology. Live imaging revealed an increase of diaminofluorescein-2 diacetate fluorescence, a nitric oxide (NO) specific reagent, in the arterial endothelium following Keishibukuryogan administration. This fluorescence was most remarkable at vascular bifurcations but was present throughout the mesenteric arterioles. This study demonstrates the successful imaging of Oketsu pathology with respect to microcirculation and the anti-Oketsu effects of Keishibukuryogan, namely, vasodilation of arterioles, increased blood velocity, and resolution of erythrocyte congestion. The anti-Oketsu effect of Keishibukuryogan is related to endothelial NO production.
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Atochin DN, Schepetkin IA, Khlebnikov AI, Seledtsov VI, Swanson H, Quinn MT, Huang PL. A novel dual NO-donating oxime and c-Jun N-terminal kinase inhibitor protects against cerebral ischemia-reperfusion injury in mice. Neurosci Lett 2016; 618:45-49. [PMID: 26923672 DOI: 10.1016/j.neulet.2016.02.033] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Revised: 02/08/2016] [Accepted: 02/17/2016] [Indexed: 10/22/2022]
Abstract
The c-Jun N-terminal kinase (JNK) has been shown to be an important regulator of neuronal cell death. Previously, we synthesized the sodium salt of 11H-indeno[1,2-b]quinoxalin-11-one (IQ-1S) and demonstrated that it was a high-affinity inhibitor of the JNK family. In the present work, we found that IQ-1S could release nitric oxide (NO) during its enzymatic metabolism by liver microsomes. Moreover, serum nitrite/nitrate concentration in mice increased after intraperitoneal injection of IQ-1S. Because of these dual actions as JNK inhibitor and NO-donor, the therapeutic potential of IQ-1S was evaluated in an animal stroke model. We subjected wild-type C57BL6 mice to focal ischemia (30min) with subsequent reperfusion (48h). Mice were treated with IQ-1S (25mg/kg) suspended in 10% solutol or with vehicle alone 30min before and 24h after middle cerebral artery (MCA) occlusion (MCAO). Using laser-Doppler flowmetry, we monitored cerebral blood flow (CBF) above the MCA during 30min of MCAO provoked by a filament and during the first 30min of subsequent reperfusion. In mice treated with IQ-1S, ischemic and reperfusion values of CBF were not different from vehicle-treated mice. However, IQ-1S treated mice demonstrated markedly reduced neurological deficit and infarct volumes as compared with vehicle-treated mice after 48h of reperfusion. Our results indicate that the novel JNK inhibitor releases NO during its oxidoreductive bioconversion and improves stroke outcome in a mouse model of cerebral reperfusion. We conclude that IQ-1S is a promising dual functional agent for the treatment of cerebral ischemia and reperfusion injury.
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Affiliation(s)
- Dmitriy N Atochin
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, 149 East 13th Street, Charlestown, MA 02129, USA; RASA Center in Tomsk, Tomsk Polytechnic University, Tomsk 634050, Russia.
| | - Igor A Schepetkin
- RASA Center in Tomsk, Tomsk Polytechnic University, Tomsk 634050, Russia; Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59715, USA
| | - Andrei I Khlebnikov
- Department of Biotechnology and Organic Chemistry, Tomsk Polytechnic University, Tomsk 634050, Russia; Department of Chemistry, Altai State Technical University, Barnaul 656038, Russia
| | | | - Helen Swanson
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, 149 East 13th Street, Charlestown, MA 02129, USA
| | - Mark T Quinn
- Department of Microbiology and Immunology, Montana State University, Bozeman, MT 59715, USA
| | - Paul L Huang
- Cardiovascular Research Center, Cardiology Division, Massachusetts General Hospital, 149 East 13th Street, Charlestown, MA 02129, USA
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Abstract
Vascular endothelial cells play a major role in maintaining cardiovascular homeostasis. Endothelial dysfunction, characterized by reduced endothelium-dependent relaxations or accompanied by enhanced endothelium-dependent contractions, is a hallmark of and plays a pivotal role in the pathogenesis of hypertension. Endothelial dysfunction in hypertension has been linked to decreases in nitric oxide (NO) bioavailability, reflecting the impaired generation of NO and/or the enhanced inactivation of NO by reactive oxygen species. Many of these conditions can be improved by glucagon-like peptide 1 (GLP-1), a proglucagon-derived hormone secreted by intestinal endocrine L-type cells, which is rapidly inactivated by an enzyme dipeptidyl peptidase 4 in circulation. On one hand, GLP-1 analogues or dipeptidyl peptidase 4 inhibitors upregulate endothelial nitric oxide synthase expression and increase endothelial nitric oxide synthase phosphorylation, resulting in improved production of NO and thus endothelium-dependent relaxations. On the other hand, GLP-1 and related agents attenuate endothelium-dependent contractions by reducing reactive oxygen species generation and cyclooxygenase-2 expression. GLP-1 elevating agents and GLP-1 receptor agonists improve endothelial function in hypertension, suggesting that GLP-1 signaling could be a therapeutic target in hypertension-related vascular events.
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Pauwels B, Boydens C, Brouckaert P, Van de Voorde J. Oximes induce erection and are resistant to oxidative stress. J Sex Med 2015; 12:906-15. [PMID: 25689429 DOI: 10.1111/jsm.12846] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
INTRODUCTION Because of their nitric oxide (NO)-donating capacities, oxime derivatives have shown to offer some therapeutic perspective for the treatment of erectile dysfunction (ED) as well as cardiovascular diseases. However, to date the in vivo effect of these oximes on erectile function remains unknown. In many disease states oxidative stress occurs, impairing NO-mediated relaxations. Hence the influence of oxidative stress on oxime-induced effects is also of interest. AIMS This study aimed to evaluate the in vivo effect of formaldoxime (FAL) and formamidoxime (FAM) on blood pressure and intracavernosal pressure (ICP); and to examine the role of soluble guanylyl cyclase (sGC) and the influence of oxidative stress on the FAL and FAM responses. METHODS Blood pressure and ICP were monitored in vivo after resp. intravenous or intracavernosal injection of FAL and FAM. Moreover isometric tension was measured in vitro on isolated mice corpora cavernosa (CC), thoracic aorta, and femoral artery in organ baths. The role of sGC was investigated using transgenic mice lacking the alpha 1 subunit of sGC. MAIN OUTCOME MEASURES Mean arterial pressure (MAP) and ICP were measured after FAL/FAM injection. In vitro relaxation of CC strips was evaluated in response to addition of FAL/FAM. RESULTS In vivo both FAL and FAM elicit a dose-dependent lowering of blood pressure (maximal ΔMAP: 33.66 ± 4.07 mm Hg [FAL] and 20.43 ± 2.06 mm Hg [FAM] ) as well as an increase of ICP (maximal increase of ICP/MAP: 70.29 ± 2.88% [FAL] and 52.91 ± 8.61% [FAM] ). The FAL/FAM effect is significantly lower in knockout vs. wild-type mice. Oxidative stress has an inhibitory effect on corporal NO-mediated relaxations induced by electrical field stimulation, acetylcholine, and sodium nitroprusside whereas the responses to 8-(4-chlorophenylthio)-guanosine 3',5'-cyclic monophosphate sodium salt, FAL and FAM were not influenced. CONCLUSIONS Oximes induce erection which is mediated by sGC. The oxime-induced relaxations are resistant to oxidative stress, which increases their therapeutic potential for the treatment of ED.
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Affiliation(s)
- Bart Pauwels
- Department of Pharmacology, Ghent University, Ghent, Belgium
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Machado NT, Maciel PM, Alustau MC, Queiroz TM, Furtado FF, Assis VL, Veras RC, Araújo IG, Athayde-Filho PF, Medeiros IA. Nitric oxide as a target for the hypotensive and vasorelaxing effects induced by (Z)-ethyl 12-nitrooxy-octadec-9-enoate in rats. Eur J Pharm Sci 2014; 62:317-25. [DOI: 10.1016/j.ejps.2014.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2014] [Revised: 04/16/2014] [Accepted: 06/13/2014] [Indexed: 10/25/2022]
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Dantas BPV, Ribeiro TP, Assis VL, Furtado FF, Assis KS, Alves JS, Silva TM, Camara CA, França-Silva MS, Veras RC, Medeiros IA, Alencar JL, Braga VA. Vasorelaxation induced by a new naphthoquinone-oxime is mediated by NO-sGC-cGMP pathway. Molecules 2014; 19:9773-85. [PMID: 25006785 PMCID: PMC6270866 DOI: 10.3390/molecules19079773] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 06/21/2014] [Accepted: 06/23/2014] [Indexed: 11/16/2022] Open
Abstract
It has been established that oximes cause endothelium-independent relaxation in blood vessels. In the present study, the cardiovascular effects of the new oxime 3-hydroxy-4–(hydroxyimino)-2-(3-methylbut-2-enylnaphtalen-1(4H)-one (OximeS1) derived from lapachol were evaluated. In normotensive rats, administration of Oxime S1 (10, 15, 20 and 30 mg/Kg, i.v.) produced dose-dependent reduction in blood pressure. In isolated aorta and superior mesenteric artery rings, Oxime S1 induced endothelium-independent and concentration-dependent relaxations (10−8 M to 10−4 M). In addition, Oxime S1-induced vasorelaxations were attenuated by hydroxocobalamin or methylene blue in aorta and by PTIO or ODQ in mesenteric artery rings, suggesting a role for the nitric oxide (NO) pathway. Additionally, Oxime S1 (30 and 100 µM) significantly increased NO concentrations (13.9 ± 1.6 nM and 17.9 ± 4.1 nM, respectively) measured by nitric oxide microsensors. Furthermore, pre-contraction with KCl (80 mM) prevented Oxime S1-derived vasorelaxation in endothelium-denuded aortic rings. Of note, combined treatment with potassium channel inhibitors also reduced Oxime S1-mediated vasorelaxation suggesting a role for potassium channels, more precisely Kir, Kv and KATP channels. We observed the involvement of BKCa channels in Oxime S1-induced relaxation in mesenteric artery rings. In conclusion, these data suggest that the Oxime S1 induces hypotension and vasorelaxation via NO pathway by activating soluble guanylate cyclase (sGC) and K+ channels.
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Affiliation(s)
- Bruna P. V. Dantas
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Thaís P. Ribeiro
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Valéria L. Assis
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Fabíola F. Furtado
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Kívia S. Assis
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Jeziane S. Alves
- Molecular Sciences Department, Federal Rural University of Pernambuco, Recife, PE 52171-900, Brazil; E-Mails: (J.S.A.); (T.M.S.S.); (C.A.C.)
| | - Tania M.S. Silva
- Molecular Sciences Department, Federal Rural University of Pernambuco, Recife, PE 52171-900, Brazil; E-Mails: (J.S.A.); (T.M.S.S.); (C.A.C.)
| | - Celso A. Camara
- Molecular Sciences Department, Federal Rural University of Pernambuco, Recife, PE 52171-900, Brazil; E-Mails: (J.S.A.); (T.M.S.S.); (C.A.C.)
| | - Maria S. França-Silva
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Robson C. Veras
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Isac A. Medeiros
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Jacicarlos L. Alencar
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
| | - Valdir A. Braga
- Biotechnology Center, Federal University of Paraíba, João Pessoa, PB 58.051-900, Brazil; E-Mails: (B.P.V.D.); (T.P.R); (V.L.A.); (F.F.F.); (K.S.A.); (M.S.F.-S.); (R.C.V.); (I.A.M.); (J.L.A.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +55-083-3216-7173; Fax: +55-083-3216-7511
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Pauwels B, Boydens C, Decaluwé K, Van de Voorde J. NO-donating oximes relax corpora cavernosa through mechanisms other than those involved in arterial relaxation. J Sex Med 2014; 11:1664-74. [PMID: 24842569 DOI: 10.1111/jsm.12564] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
INTRODUCTION Erectile dysfunction (ED), as well as many cardiovascular diseases, is associated with impaired nitric oxide (NO) bioavailability. Recently, oxime derivatives have emerged as vasodilators due to their NO-donating capacities. However, whether these oximes offer therapeutic perspectives as an alternative NO delivery strategy for the treatment of ED is unexplored. AIMS This study aims to analyze the influence of formaldoxime (FAL), formamidoxime (FAM), and cinnamaldoxime (CAOx) on corporal tension and to elucidate the underlying molecular mechanisms. METHODS Organ bath studies were carried out measuring isometric tension on isolated mice corpora cavernosa (CC), thoracic aorta, and femoral artery. After contraction with norepinephrine (NOR), cumulative concentration-response curves of FAL, FAM, and CAOx (100 nmol/L-1 mmol/L) were performed. MAIN OUTCOME MEASURES FAL-/FAM-induced relaxations were evaluated in the absence/presence of various inhibitors of different molecular pathways. RESULTS FAL, FAM, and CAOx relax isolated CC as well as aorta and femoral artery from mice. ODQ (soluble guanylyl cyclase-inhibitor), diphenyliodonium chloride (nonselective flavoprotein inhibitor), and 7-ethoxyresorufin (inhibitor of CYP450 1A1 and NADPH-dependent reductases) substantially blocked the FAL-/FAM-induced relaxation in the arteries but not in CC. Only a small inhibition of the FAM response in CC was observed with ODQ. CONCLUSIONS This study shows for the first time that NO-donating oximes relax mice CC. Therefore, oximes are a new group of molecules with potential for the treatment of ED. However, the underlying mechanism(s) of the FAL-/FAM-induced corporal relaxation clearly differ(s) from the one(s) involved in arterial vasorelaxation.
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Affiliation(s)
- Bart Pauwels
- Department of Pharmacology, Ghent University, Ghent, Belgium
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