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He Y, Kim BG, Kim HE, Sun Q, Shi S, Ma G, Kim Y, Kim OS, Kim OJ. The Protective Role of Feruloylserotonin in LPS-Induced HaCaT Cells. Molecules 2019; 24:molecules24173064. [PMID: 31443581 PMCID: PMC6749254 DOI: 10.3390/molecules24173064] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/19/2019] [Accepted: 08/20/2019] [Indexed: 12/20/2022] Open
Abstract
Epidermal inflammation is caused by various bacterial infectious diseases that impair the skin health. Feruloylserotonin (FS) belongs to the hydroxycinnamic acid amides of serotonin, which mainly exists in safflower seeds and has been proven to have anti-inflammatory and antioxidant activities. Human epidermis mainly comprises keratinocytes whose inflammation causes skin problems. This study investigated the protective effects of FS on the keratinocyte with lipopolysaccharides (LPS)-induced human HaCaT cells and elucidated its underlying mechanisms of action. The mechanism was investigated by analyzing cell viability, PGE2 levels, cell apoptosis, nuclear factor erythroid 2-related factor 2 (Nrf2) translocation, and TLR4/NF-κB pathway. The anti-inflammatory effects of FS were assessed by inhibiting the inflammation via down-regulating the TLR4/NF-κB pathway. Additionally, FS promoted Nrf2 translocation to the nucleus, indicating that FS showed anti-oxidative activities. Furthermore, the antioxidative and anti-inflammatory effects of FS were found to benefit each other, but were independent. Thus, FS can be used as a component to manage epidermal inflammation due to its anti-inflammatory and anti-oxidative properties.
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Affiliation(s)
- Yuzhu He
- Department of Oral Pathology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China
| | - Byung-Gook Kim
- Department of Oral Medicine, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Hye-Eun Kim
- Department of Oral Pathology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Department of Orthodontics, School of Dental Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Qiaochu Sun
- Department of Oral Pathology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China
| | - Shuhan Shi
- Department of Oral Pathology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China
| | - Guowu Ma
- Department of Oral and Maxillofacial Surgery, School of Stomatology, Dalian Medical University, Dalian 116044, China
| | - Young Kim
- Department of Oral Pathology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Ok-Su Kim
- Department of Periodontology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea
| | - Ok-Joon Kim
- Department of Oral Pathology, School of Dentistry, Chonnam National University, Gwangju 61186, Korea.
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Nosáí R, DráBiková K, Jančinová V, Mačičková T, Pečivová J, Perečko T, Harmatha J. Pharmacological intervention with oxidative burst in human neutrophils. Interdiscip Toxicol 2018; 10:56-60. [PMID: 30123038 PMCID: PMC6096857 DOI: 10.1515/intox-2017-0009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 08/12/2017] [Indexed: 11/15/2022] Open
Abstract
In this study we investigated the effect of five therapeutically used drugs and four natural polyphenolic compounds on the mechanism of oxidative burst of human neutrophils concerning their participation in the generation of reactive oxygen species (ROS). The compounds investigated decreased the oxidative burst of whole blood in the rank order of potency: N-feruloylserotonin > quercetin > curcumin > arbutin > dithiaden > carvedilol. The generation of intracellular reactive oxygen species in isolated neutrophils decreased in the same rank order, while carvedilol was ineffective. Scavenging of extracellular oxygen radicals followed the rank order of potency: N-feruloylserotonin > curcumin > quercetin > dithiaden. Arbutin and carvedilol had no effect. All compounds tested increased the activity of caspase-3 in cell-free system indicating a positive effect on apoptosis of neutrophils. Activation of protein kinase C was significantly decreased by dithiaden, curcumin, quercetin and N-feruloylserotonin. Carvedilol, dithiaden, quercetin and arbutin reduced activated neutrophil myeloperoxidase release more significantly compared with their less pronounced effect on superoxide generation The presented results are indicative of pharmacological intervention with neutrophils in pathological processes. Of particular interest was the effect of natural compounds. Intracellular inhibition of oxidative burst in isolated neutrophils by the drugs tested and natural antioxidants has to be further analysed since ROS play an important role in immunological responses of neutrophils.
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Affiliation(s)
- Rado Nosáí
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Katarína DráBiková
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Viera Jančinová
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Tatiana Mačičková
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Jana Pečivová
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Tomáš Perečko
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic
| | - Juraj Harmatha
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences Czech Republic, Prague, Czech Republic
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Nosáľ R, Drábiková K, Jančinová V, Mačičková T, Pečivová J, Perečko T, Harmatha J, Šmidrkal J. On the pharmacology of oxidative burst of human neutrophils. Physiol Res 2016; 64:S445-52. [PMID: 26681073 DOI: 10.33549/physiolres.933204] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The effect of three therapeutically used drugs and five polyphenolic compounds on the mechanism of oxidative burst was compared in whole blood and isolated neutrophils at cellular and molecular level. In 10 microM concentration, the compounds investigated decreased the oxidative burst of whole blood in the rank order of potency: N-feruloylserotonin (N-f-5HT) > curcumin (CUR) > quercetin (QUER) > arbutin (ARB) > resveratrol (RES) > dithiaden (DIT) > carvedilol (CARV) > brompheniramine (BPA). The ratio between the percentage inhibition of extracellular versus intracellular chemiluminescence (CL) followed the rank order QUER > N-f-5HT > RES > CUR > DIT and is indicative of the positive effect of the compounds tested against oxidative burst of neutrophils, demonstrating suppression of reactive oxygen species extracellularly with minimal alteration of intracellular reactive oxygen species (ROS). Activation of protein kinase C was significantly decreased by DIT, CUR, QUER and N-f-5HT. CARV, DIT, QUER and ARB reduced activated neutrophil myeloperoxidase release more significantly compared with the effect on superoxide anion generation. All compounds tested increased the activity of caspase-3 in cell-free system. It is suggested that other regulatory mechanisms than protein kinase C might participate in the inhibition of neutrophil activation with the compounds tested. Different mechanisms are concerned in controlling the assembly of NADPH oxidase and the regulatory role of calcium ions is suggested. Compounds decreasing the amount of extracellular ROS generation, yet affecting but minimally intracellular ROS generation, are promising for further investigation in vivo.
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Affiliation(s)
- R Nosáľ
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovakia.
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Effect of N-Feruloylserotonin and Methotrexate on Severity of Experimental Arthritis and on Messenger RNA Expression of Key Proinflammatory Markers in Liver. J Immunol Res 2016; 2016:7509653. [PMID: 27556049 PMCID: PMC4983360 DOI: 10.1155/2016/7509653] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2016] [Revised: 05/31/2016] [Accepted: 06/08/2016] [Indexed: 12/19/2022] Open
Abstract
Rheumatoid arthritis (RA) is a chronic inflammatory disease, leading to progressive destruction of joints and extra-articular tissues, including organs such as liver and spleen. The purpose of this study was to compare the effects of a potential immunomodulator, natural polyphenol N-feruloylserotonin (N-f-5HT), with methotrexate (MTX), the standard in RA therapy, in the chronic phase of adjuvant-induced arthritis (AA) in male Lewis rats. The experiment included healthy controls (CO), arthritic animals (AA), AA given N-f-5HT (AA-N-f-5HT), and AA given MTX (AA-MTX). N-f-5HT did not affect the body weight change and clinical parameters until the 14th experimental day. Its positive effect was rising during the 28-day experiment, indicating a delayed onset of N-f-5HT action. Administration of either N-f-5HT or MTX caused reduction of inflammation measured as the level of CRP in plasma and the activity of LOX in the liver. mRNA transcription of TNF-α and iNOS in the liver was significantly attenuated in both MTX and N-f-5HT treated groups of arthritic rats. Interestingly, in contrast to MTX, N-f-5HT significantly lowered the level of IL-1β in plasma and IL-1β mRNA expression in the liver and spleen of arthritic rats. This speaks for future investigations of N-f-5HT as an agent in the treatment of RA in combination therapy with MTX.
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Jančinová V, Pažoureková S, Lucová M, Perečko T, Mihalová D, Bauerová K, Nosáľ R, Drábiková K. Selective inhibition of extracellular oxidants liberated from human neutrophils—A new mechanism potentially involved in the anti-inflammatory activity of hydroxychloroquine. Int Immunopharmacol 2015; 28:175-81. [DOI: 10.1016/j.intimp.2015.05.048] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2015] [Revised: 05/07/2015] [Accepted: 05/30/2015] [Indexed: 11/27/2022]
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Kuncirova V, Ponist S, Mihalova D, Drafi F, Nosal R, Acquaviva A, Gardi C, Harmatha J, Hradkova I, Bauerova K. N-feruloylserotonin in preventive combination therapy with methotrexate reduced inflammation in adjuvant arthritis. Fundam Clin Pharmacol 2014; 28:616-26. [DOI: 10.1111/fcp.12085] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 05/22/2014] [Accepted: 06/06/2014] [Indexed: 12/31/2022]
Affiliation(s)
- Viera Kuncirova
- Institute of Experimental Pharmacology and Toxicology; Slovak Academy of Sciences; Dubravska cesta 9 SK-841 04 Bratislava Slovak Republic
| | - Silvester Ponist
- Institute of Experimental Pharmacology and Toxicology; Slovak Academy of Sciences; Dubravska cesta 9 SK-841 04 Bratislava Slovak Republic
| | - Danica Mihalova
- Institute of Experimental Pharmacology and Toxicology; Slovak Academy of Sciences; Dubravska cesta 9 SK-841 04 Bratislava Slovak Republic
| | - Frantisek Drafi
- Institute of Experimental Pharmacology and Toxicology; Slovak Academy of Sciences; Dubravska cesta 9 SK-841 04 Bratislava Slovak Republic
| | - Radomir Nosal
- Institute of Experimental Pharmacology and Toxicology; Slovak Academy of Sciences; Dubravska cesta 9 SK-841 04 Bratislava Slovak Republic
| | - Alessandra Acquaviva
- Department of Molecular and Developmental Medicine; University of Siena; via A. Moro - Loc. S. Miniato I-53100 Siena Italy
| | - Concetta Gardi
- Department of Molecular and Developmental Medicine; University of Siena; via A. Moro - Loc. S. Miniato I-53100 Siena Italy
| | - Juraj Harmatha
- Institute of Organic Chemistry and Biochemistry v.v.i.; AS CR; Flemingovo nam. 2 CZ - 166 10 Prague 6 Czech Republic
| | - Iveta Hradkova
- Department of Diary and Fat Technology; Faculty of Food and Biochemical Technology; Institute of Chemical Technology; Technicka 5 CZ - 166 28 Prague Czech Republic
| | - Katarina Bauerova
- Institute of Experimental Pharmacology and Toxicology; Slovak Academy of Sciences; Dubravska cesta 9 SK-841 04 Bratislava Slovak Republic
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On the molecular pharmacology of resveratrol on oxidative burst inhibition in professional phagocytes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2014; 2014:706269. [PMID: 24672638 PMCID: PMC3942095 DOI: 10.1155/2014/706269] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 12/12/2013] [Accepted: 12/17/2013] [Indexed: 01/15/2023]
Abstract
Resveratrol—3,5,4′-trihydroxystilbene—possesses antioxidant activities in vitro. It dose-dependently inhibited the generation of peroxyl, hydroxyl, peroxides, and lipid peroxidation products in cell free systems. Oxidative burst of whole human blood stimulated with PMA, fMLP, OpZ, and A23187 was inhibited in a concentration-dependent way, indicating suppression of both receptor and nonreceptor activated chemiluminescence by resveratrol. Results from isolated human neutrophils revealed that resveratrol was active extracellularly as well as intracellularly in inhibiting the generation of reactive oxygen species. Liberation of ATP and analysis of apoptosis showed that in the concentration of 100 μM, resveratrol did not change the viability and integrity of isolated neutrophils. Western blot analysis documented that resveratrol in concentrations of 10 and 100 μM significantly decreased PMA-induced phosphorylation of PKC α/βII. Dose-dependent inhibition of nitrite production and iNOS protein expression in RAW 264.7 cells indicated possible interference of resveratrol with reactive nitrogen radical generation in professional phagocytes. The results suggest that resveratrol represents an effective naturally occurring substance with potent pharmacological effect on oxidative burst of human neutrophils and nitric oxide production by macrophages. It should be further investigated for its pharmacological activity against oxidative stress in ischaemia reperfusion, inflammation, and other pathological conditions, particularly neoplasia.
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Dushkin M, Khrapova M, Kovshik G, Chasovskikh M, Menshchikova E, Trufakin V, Shurlygina A, Vereschagin E. Effects of rhaponticum carthamoides versus glycyrrhiza glabra and punica granatum extracts on metabolic syndrome signs in rats. Altern Ther Health Med 2014; 14:33. [PMID: 24444255 PMCID: PMC3905158 DOI: 10.1186/1472-6882-14-33] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Accepted: 11/15/2013] [Indexed: 12/31/2022]
Abstract
Background Rhaponticum cathamoides (RC) is an endemic wild Siberian herb with marked medicinal properties that are still poorly understood. The aim of this study is to investigate the therapeutic potential of RC extract (ERC) compared to the effects of Glycyrrhiza glabra (EGG) and Punica granatum extracts (EPG) in a rat model with high-fat diet-(HFD)-induced signs of metabolic syndrome; therefore, this study addresses a significant global public health problem. Methods Six-month-old male Wistar Albino Glaxo rats were subjected to eight weeks of a standard diet (SD), HFD, or HFD in which ERC, EGG, or EPG powders were incorporated at 300 mg/kg/day. The serum lipid profile, corticosterone and cytokine concentrations, glucose tolerance, systolic blood pressure, triacylglycerol accumulation, and PPARα DNA-binding activities in the liver samples were determined. Results In contrast to EGG and EPG, an ERC supplement significantly reduced the weight of epididymal tissue (19.0%, p < 0.01) and basal serum glucose level (19.4%, p < 0.05). ERC improved glucose intolerance as well as dyslipidemia more efficiently than EGG and EPG. EGG but not ERC or EPG supplementation decreased systolic blood pressure by 12.0% (p < 0.05). All of the tested extracts reduced serum IL6 and corticosterone levels induced by HFD. However, the lowering effects of ERC consumption on the serum TNF-α level and its restoring effect on the adrenal corticosterone level significantly exceeded the improvements induced by EGG and EPG. ERC intake also reduced triacylglycerol accumulation and increased the PPARα DNA-binding activity in the liver more significantly than EGG and EPG. Conclusions ERC powder supplementation improved glucose and lipid metabolism more significantly than EGG and EPG in rats fed on HFD, supporting the strategy of R. carthamoides use for safe relief of metabolic syndrome and its related disturbances such as inflammation, stress, and hepatic steatosis.
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Study of possible mechanisms involved in the inhibitory effects of coumarin derivatives on neutrophil activity. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:136570. [PMID: 24349608 PMCID: PMC3855971 DOI: 10.1155/2013/136570] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Revised: 10/17/2013] [Accepted: 10/17/2013] [Indexed: 01/07/2023]
Abstract
To specify the site of action of the synthetic coumarin derivatives 7-hydroxy-3-(4'-hydroxyphenyl) coumarin (HHC) and 7-hydroxy-3-(4'-hydroxyphenyl) dihydrocoumarin (HHDC), we evaluated their effects on extra- and intracellular reactive oxygen species (ROS) formation in phorbol-myristate-13-acetate (PMA) stimulated human neutrophils. We studied also the effects of HHC and HHDC on possible molecular mechanisms which participate in the activation of NADPH oxidase, that is, on PKC activity, on phosphorylation of some PKC isoforms (α, βII, and δ), and on phosphorylation of the NADPH oxidase subunit p40(phox). Without affecting cytotoxicity, both coumarines tested were effective inhibitors/scavengers of ROS produced by neutrophils on extracellular level. HHC markedly diminished oxidant production and also, intracellularly, decreased PKC activity and partly phosphorylation of PKCα, βII. On the other hand, we did not observe any effect of coumarin derivatives on phosphorylation of PKC δ and on phosphorylation of the NADPH oxidase subunit p40(phox), which were suggested to be involved in the PMA-dependent intracellular activation process. In agreement with our previous findings, we assume that the different molecular structures of HHC and HHDC with their different physicochemical and free radical scavenging characteristics are responsible for their diverse effects on the parameters tested.
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The natural stilbenoid piceatannol decreases activity and accelerates apoptosis of human neutrophils: involvement of protein kinase C. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:136539. [PMID: 24288583 PMCID: PMC3833065 DOI: 10.1155/2013/136539] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Accepted: 09/11/2013] [Indexed: 02/01/2023]
Abstract
Neutrophils are able to release cytotoxic substances and inflammatory mediators, which, along with their delayed apoptosis, have a potential to maintain permanent inflammation. Therefore, treatment of diseases associated with chronic inflammation should be focused on neutrophils; formation of reactive oxygen species and apoptosis of these cells represent two promising targets for pharmacological intervention.
Piceatannol, a naturally occurring stilbenoid, has the ability to reduce the toxic action of neutrophils. This substance decreased the amount of oxidants produced by neutrophils both extra- and intracellularly. Radicals formed within neutrophils (fulfilling a regulatory role) were reduced to a lesser extent than extracellular oxidants, potentially dangerous for host tissues. Moreover, piceatannol did not affect the phosphorylation of p40phox—a component of NADPH oxidase, responsible for the assembly of functional oxidase in intracellular (granular) membranes. The stilbenoid tested elevated the percentage of early apoptotic neutrophils, inhibited the activity of protein kinase C (PKC)—the main regulatory enzyme in neutrophils, and reduced phosphorylation of PKC isoforms α, βII, and δ on their catalytic region.
The results indicated that piceatannol may be useful as a complementary medicine in states associated with persisting neutrophil activation and with oxidative damage of tissues.
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Polyphenol derivatives - potential regulators of neutrophil activity. Interdiscip Toxicol 2012; 5:65-70. [PMID: 23118589 PMCID: PMC3485655 DOI: 10.2478/v10102-012-0011-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2012] [Revised: 05/21/2012] [Accepted: 05/23/2012] [Indexed: 01/01/2023] Open
Abstract
The study provides new information on the effect of natural polyphenols (derivatives of stilbene - resveratrol, pterostilbene, pinosylvin and piceatannol and derivatives of ferulic acid - curcumin, N-feruloylserotonin) on the activity of human neutrophils in influencing oxidative burst. All the polyphenols tested were found to reduce markedly the production of reactive oxygen species released by human neutrophils on extra-and intracellular levels as well as in cell free system. Moreover, pinosylvin, curcumin, N-feruloylserotonin and resveratrol decreased protein kinase C activity involved in neutrophil signalling and reactive oxygen species production. Our results suggest that due to their anti-neutrophil activity, the polyphenols tested might be attractive candidates in therapeutic development.
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Decreased activity and accelerated apoptosis of neutrophils in the presence of natural polyphenols. Interdiscip Toxicol 2012; 5:59-64. [PMID: 23118588 PMCID: PMC3485654 DOI: 10.2478/v10102-012-0010-9] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 05/25/2012] [Accepted: 05/26/2012] [Indexed: 11/21/2022] Open
Abstract
Prolonged or excessive formation and liberation of cytotoxic substances from neutrophils intensifies inflammation and the risk of tissue damage. From this perspective, administration of substances which are able to reduce activity of neutrophils and to enhance apoptosis of these cells may improve the therapy of pathological states connected with persistent inflammation. In this short review, neutrophil oxidative burst and apoptosis are presented as potential targets for pharmacological intervention. Effects of natural polyphenols (resveratrol, pterostilbene, pinosylvin, piceatannol, curcumin, N-feruloylserotonin) are summarised, considering the ability of these compounds to affect inflammation and particularly neutrophil activity. The intended neutrophil inhibition is introduced as a part of a new strategy for pharmacological modulation of chronic inflammatory processes, focused on supporting innate anti-inflammatory mechanisms and enhancing resolution of inflammation.
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Jančinová V, Perečko T, Nosáľ R, Harmatha J, Smidrkal J, Drábiková K. The natural stilbenoid pinosylvin and activated neutrophils: effects on oxidative burst, protein kinase C, apoptosis and efficiency in adjuvant arthritis. Acta Pharmacol Sin 2012; 33:1285-92. [PMID: 22842731 PMCID: PMC4002707 DOI: 10.1038/aps.2012.77] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
AIM To investigate the effects of the naturally occurring stilbenoid pinosylvin on neutrophil activity in vitro and in experimental arthritis, and to examine whether protein kinase C (PKC) activation served as an assumed target of pinosylvin action. METHODS Fresh human blood neutrophils were isolated. The oxidative burst of neutrophils was evaluated on the basis of enhanced chemiluminescence. Neutrophil viability was evaluated with flow cytometry, and PKC phosphorylation was assessed by Western blotting analysis. Adjuvant arthritis was induced in Lewis rats with heat-killed Mycobacterium butyricum, and the animals were administered with pinosylvin (30 mg/kg, po) daily for 21 d after arthritis induction. RESULTS In isolated human neutrophils, pinosylvin (10 and 100 μmol/L) significantly decreased the formation of oxidants, both extra- and intracellularly, and effectively inhibited PKC activation stimulated by phorbol myristate acetate (0.05 μmol/L). The inhibition was not due to neutrophil damage or increased apoptosis. In arthritic rats, the number of neutrophils in blood was dramatically increased, and whole blood chemiluminescence (spontaneous and PMA-stimulated) was markedly enhanced. Pinosylvin administration decreased the number of neutrophils (from 69 671 ± 5588/μL to 51 293 ± 3947/μL, P=0.0198) and significantly reduced the amount of reactive oxygen species in blood. CONCLUSION Pinosylvin is an effective inhibitor of neutrophil activity, and is potentially useful as a complementary medicine in states associated with persistent inflammation.
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MESH Headings
- Adult
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/administration & dosage
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Anti-Inflammatory Agents, Non-Steroidal/therapeutic use
- Apoptosis/drug effects
- Arthritis, Experimental/blood
- Arthritis, Experimental/drug therapy
- Arthritis, Experimental/enzymology
- Arthritis, Experimental/immunology
- Blotting, Western
- Cell Survival/drug effects
- Cells, Cultured
- Dose-Response Relationship, Drug
- Flow Cytometry
- Humans
- Leukocyte Count
- Luminescent Measurements
- Male
- Middle Aged
- Neutrophil Activation/drug effects
- Neutrophils/cytology
- Neutrophils/drug effects
- Neutrophils/metabolism
- Pinus sylvestris/chemistry
- Protein Kinase C/metabolism
- Rats
- Rats, Inbred Lew
- Reactive Oxygen Species/metabolism
- Respiratory Burst/drug effects
- Stilbenes/administration & dosage
- Stilbenes/pharmacology
- Stilbenes/therapeutic use
- Young Adult
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Affiliation(s)
- Viera Jančinová
- Institute of Experimental Pharmacology and Toxicology, Slovak Academy of Sciences, Bratislava, Slovak Republic.
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