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Schweikl H, Weissenberger S, Gallorini M, Bolay C, Waha C, Hiller KA, Buchalla W. Influence of HEMA on LPS- and LTA-stimulated IL-6 release from human dental pulp cells. Dent Mater 2022; 38:886-897. [PMID: 35341601 DOI: 10.1016/j.dental.2022.03.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 02/04/2022] [Accepted: 03/15/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVE Dental pulp cells interact with immunogenic components such as LPS (lipopolysaccharide) or LTA (lipoteichoic acid) released from microorganisms in carious lesions. In the present investigation, the formation of the pro-inflammatory cytokines TNFα and IL-6 in LPS- or LTA-stimulated cells from the dental pulp interface and pulp fibroblasts was analyzed in the presence of the resin monomer 2-hydroxyethyl methacrylate (HEMA) under varying cellular redox conditions. METHOD Human pulp fibroblasts (HPC) or cells from the dental pulp interface expressing an odontoblast phenotype (hOD-1) were exposed to LTA, LPS or HEMA for 1 h or 24 h. Redox homeostasis was modified by the prooxidant BSO (L-buthionine sulfoximine) or the antioxidant NAC (N-acetyl cysteine). Formation of TNFα or IL-6 was analyzed by ELISA, and cell survival was determined by a crystal violet assay. Statistical analyses were performed using the Mann-Whitney-U-test. RESULTS Secretion of TNFα was not detected in LPS- or LTA-stimulated HPC or hOD-1, and IL-6 was not found after a short exposure (1 h). After a 24 h exposure, LPS induced a 3-fold increase in IL-6 formation in HPC, while LTA stimulated IL-6 release about 20-fold. Likewise, LTA was more effective than LPS in hOD-1 stimulating IL-6 levels about 50-fold. HEMA inhibited the LPS- and LTA-induced IL-6 release, and this effect was enhanced by BSO but counteracted by NAC in both cell types. IL-6 release was independent of cell survival rates. CONCLUSIONS The protective immune response in odontoblasts and pulp fibroblasts is impaired by monomers such as HEMA through the disturbance of the redox homeostasis.
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Affiliation(s)
- Helmut Schweikl
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, University of Regensburg, D-93042 Regensburg, Germany.
| | - Sarah Weissenberger
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, University of Regensburg, D-93042 Regensburg, Germany
| | - Marialucia Gallorini
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, University of Regensburg, D-93042 Regensburg, Germany; Department of Pharmacy, University "G. d'Annunzio" Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy
| | - Carola Bolay
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, University of Regensburg, D-93042 Regensburg, Germany
| | - Claudia Waha
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, University of Regensburg, D-93042 Regensburg, Germany
| | - Karl-Anton Hiller
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, University of Regensburg, D-93042 Regensburg, Germany
| | - Wolfgang Buchalla
- Department of Conservative Dentistry and Periodontology, University Hospital Regensburg, University of Regensburg, D-93042 Regensburg, Germany
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Camassa LMA, Ervik TK, Zegeye FD, Mdala I, Valen H, Ansteinsson V, Zienolddiny S. Characterization and toxicity evaluation of air-borne particles released by grinding from two dental resin composites in vitro. Dent Mater 2021; 37:1121-1133. [PMID: 33846018 DOI: 10.1016/j.dental.2021.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 03/29/2021] [Accepted: 03/29/2021] [Indexed: 01/02/2023]
Abstract
OBJECTIVE The project aims to evaluate whether inhalation of particles released upon grinding of dental composites may pose a health hazard to dentists. The main objective of the study was to characterize the dust from polymer-based dental composites ground with different grain sized burs and investigate particle uptake and the potential cytotoxic effects in human bronchial cells. METHODS Polymerized blocks of two dental composites, Filtek™ Z250 and Filtek™ Z500 from 3M™ ESPE, were ground with super coarse (black) and fine (red) burs inside a glass chamber. Ultrafine airborne dust concentration and particle size distribution was measured real-time during grinding with a scanning mobility particle sizer (SMPS). Filter-collected airborne particles were characterized with dynamic light scattering (DLS) and scanning electron microscopy (SEM). Human bronchial epithelial cells (HBEC-3KT) were exposed to the dusts in dose-effect experiments. Toxicity was measured with lactate dehydrogenase (LDH) assay and cell counting kit-8 (CCK8). Cellular uptake was observed with transmission electron microscopy (TEM). RESULTS Airborne ultrafine particles showed that most particles were in the size range 15-35 nm (SMPS). SEM analysis proved that more than 80% of the particles have a minimum Feret diameter less than 1 μm. In solution (DLS), the particles have larger diameters and tend to agglomerate. Cell toxicity (LDH, CCK8) is shown after 48 h and 72 h exposure times and at the highest doses. TEM showed presence of the particles within the cell cytoplasm. SIGNIFICANCE Prolonged and frequent exposure through inhalation may have negative health implications for dentists.
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Affiliation(s)
- L M A Camassa
- National Institute of Occupational Health, Oslo, Norway
| | - T K Ervik
- National Institute of Occupational Health, Oslo, Norway
| | - F D Zegeye
- National Institute of Occupational Health, Oslo, Norway
| | - I Mdala
- Institute of Health and Society, University of Oslo, Oslo, Norway; Oral Health Centres of Expertise in Eastern Norway, Oslo, Norway
| | - H Valen
- Nordic Institute of Dental Materials, Oslo, Norway
| | - V Ansteinsson
- Oral Health Centres of Expertise in Eastern Norway, Oslo, Norway
| | - S Zienolddiny
- National Institute of Occupational Health, Oslo, Norway.
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Atalayin Ozkaya C, Tezel H, Armagan G, Tuzcu F, Sahbaz U, Dagci T. The effects of extended polymerization time for different resin composites on reactive oxygen species production and cell viability. J Oral Sci 2020; 63:46-49. [PMID: 33148930 DOI: 10.2334/josnusd.20-0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022]
Abstract
PURPOSE The present study was conducted to determine oxidative stress and cell viability after contact with resin composites polymerized for different times. METHODS Disk-shaped specimens of Admira Fusion, Ceram X One Universal, Solare x and Filtek Z550 (n = 12) were prepared, and two subgroups with polymerization times of 20 and 40 s were employed. The specimens were incubated with mouse fibroblast cells for 48 and 72 h, and changes in reactive oxygen species (ROS) production and cellular viability were determined by an assay with a cell-permeable fluorescent dye, 2',7'-dichlorodihydrofluorescein diacetate (H2DCF-DA), and the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay, respectively. RESULTS At 72 h, ROS production in the presence of Admira Fusion polymerized for 40 s was reduced relative to that in the presence of Admira Fusion polymerized for 20 s (P < 0.05). Cell viability was maximal in the Admira Fusion and Solare x groups and there was no difference relative to the control group at 48 h. Cell viability was higher in the Admira Fusion and Solare x groups polymerized for 40 s than for the same materials polymerized for 20 s at 72 h (P < 0.05). CONCLUSION Extension of the polymerizaton time has a material-specific effect and may be used as a strategy to increase the biocompability of resin composites.
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Affiliation(s)
| | - Huseyin Tezel
- Department of Restorative Dentistry, Ege University School of Dentistry
| | - Guliz Armagan
- Department of Biochemistry, Ege University Faculty of Pharmacy
| | - Fulya Tuzcu
- Department of Physiology, Ege University School of Medicine
| | - Ufuk Sahbaz
- Department of Physiology, Ege University School of Medicine
| | - Taner Dagci
- Department of Physiology, Ege University School of Medicine
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Alizadehgharib S, Östberg AK, Dahlgren U. Triethylene glycol dimethacrylate: adjuvant properties and effect on cytokine production. ACTA BIOMATERIALIA ODONTOLOGICA SCANDINAVICA 2017; 4:1-9. [PMID: 29230430 PMCID: PMC5717717 DOI: 10.1080/23337931.2017.1409075] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2017] [Accepted: 11/20/2017] [Indexed: 11/16/2022]
Abstract
Objective: Leakage of monomers from dental fillings due to incomplete curing is very common. The objective of the present study was to examine the cytokine profile in cells exposed to triethyleneglycol dimethacrylate (TEGDMA) and the adjuvant properties of TEGDMA. Materials and methods: Human peripheral blood mononuclear cells were exposed to TEGDMA (500 and 1000 μM) for 24 h in vitro. Bio-Plex Pro™ assays were used for analysis and detection of cytokines. In vivo, BALB/c mice were immunized subcutaneously in the base of the tail with TEGDMA in combination with ovalbumin (OVA). Results: The cytokine levels of IL-8, IL-18, GRO-α and MCP-1 were significantly increased for both concentrations. IL-1β, IL-6 and TNF-α was only significantly increased in cultures exposed to 500 μM TEGDMA. The concentration of TNF-α was significantly decreased in cultures exposed to 1000 μM TEGDMA. Animals immunized with OVA co-administrated with TEGDMA had a significantly higher IgE and IgG anti-OVA antibody levels in blood than animals immunized with OVA only. Conclusions: TEGDMA affects production of proinflammatory cytokines IL-1β, IL-6, IL-8, IL-18 and TNF-α. This inflammatogenic capacity renders TEGDMAs adjuvant properties, which may interfere with the homeostasis between the immune system and the indigenous microflora in the oral cavity.
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Affiliation(s)
- Sara Alizadehgharib
- Department of Oral Microbiology and Immunology, University of Gothenburg, The Sahlgrenska Academy, Institute of OdontologyGothenburgSweden
| | - Anna-Karin Östberg
- Department of Oral Microbiology and Immunology, University of Gothenburg, The Sahlgrenska Academy, Institute of OdontologyGothenburgSweden
| | - Ulf Dahlgren
- Department of Oral Microbiology and Immunology, University of Gothenburg, The Sahlgrenska Academy, Institute of OdontologyGothenburgSweden
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Flavin-containing enzymes as a source of reactive oxygen species in HEMA-induced apoptosis. Dent Mater 2017; 33:e255-e271. [DOI: 10.1016/j.dental.2017.01.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 01/02/2017] [Accepted: 01/31/2017] [Indexed: 12/18/2022]
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Bolling AK, Solhaug A, Morisbak E, Holme JA, Samuelsen JT. The dental monomer hydroxyethyl methacrylate (HEMA) counteracts lipopolysaccharide-induced IL-1β release-Possible role of glutathione. Toxicol Lett 2017; 270:25-33. [PMID: 28188892 DOI: 10.1016/j.toxlet.2017.02.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Revised: 02/03/2017] [Accepted: 02/06/2017] [Indexed: 10/20/2022]
Abstract
Methacrylate monomers, like 2-hydroxyethyl methacrylate (HEMA), are common components of resin based dental materials. Leakage of unpolymerized monomers after placement and curing leads to human exposure. HEMA is known to inhibit lipopolysaccharide (LPS) induced cytokine release. In this study we explore a possible role of the antioxidant glutathione (GSH) in this effect. In the RAW 264.7 murine macrophage cell line, HEMA (<2mM) did not induce cell death, but reduced cellular GSH levels, increased cellular ROS and decreased the IL-1β release from LPS-stimulated cells. Moreover, the IL-1β mRNA levels were reduced after 3-6h exposure, suggesting transcriptional effects of HEMA. The GSH modulators butylsulfoximine (BSO; inhibitor of GSH synthesis) and 2-oxothiazolidine-4-carboxylate (OTC; Cysteine precursor) caused a decrease and increase in the LPS-induced IL-1β release, respectively, suggesting a role for GSH in negative regulation of LPS-induced IL-1β release. However, the magnitude and dynamics of the effects of HEMA and BSO on LPS-induced IL-1β release and GSH depletion differed considerably. Thus, GSH depletion alone could not explain the strong attenuation of LPS-induced IL-1β release caused by HEMA. Formation of HEMA-protein conjugates due to the thiol reactivity of HEMA emerges as a likely candidate for the molecular mechanism accounting for this effect.
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Affiliation(s)
- Anette Kocbach Bolling
- Nordic Institute of Dental Materials, Sognsveien 70A, N-0855 Oslo, Norway; Norwegian Institute of Public Health, Domain of Infection Control and Environmental Health, P.O. Box 4404, N-0403 Oslo, Norway.
| | - Anita Solhaug
- Norwegian Veterinary Institute, P.O. Box 750 Sentrum, N-0106 Oslo, Norway
| | - Else Morisbak
- Nordic Institute of Dental Materials, Sognsveien 70A, N-0855 Oslo, Norway
| | - Jørn A Holme
- Norwegian Institute of Public Health, Domain of Infection Control and Environmental Health, P.O. Box 4404, N-0403 Oslo, Norway
| | - Jan Tore Samuelsen
- Nordic Institute of Dental Materials, Sognsveien 70A, N-0855 Oslo, Norway
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Critical role of superoxide anions and hydroxyl radicals in HEMA-induced apoptosis. Dent Mater 2017; 33:110-118. [DOI: 10.1016/j.dental.2016.11.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 11/01/2016] [Indexed: 11/18/2022]
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Own brand label restorative materials-A false bargain? J Dent 2016; 56:84-98. [PMID: 27836814 DOI: 10.1016/j.jdent.2016.11.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Revised: 10/25/2016] [Accepted: 11/07/2016] [Indexed: 01/23/2023] Open
Abstract
OBJECTIVES This study aims at evaluating and comparing mechanical, chemical, and cytotoxicological parameters of a commercial brand name composite material against two 'own brand label' (OBL) composites. METHODS Parameters included depth of cure, flexural strength, degree of conversion, polymerization shrinkage, filler particle morphology and elemental analyzes, Vickers hardness, surface roughness parameters after abrasion, monomer elution, and cytotoxicity. RESULTS The conventional composite outperformed the OBLS in terms of depth of cure (p<0.001), degree of cure at the first and last time intervals (p<0.001), hardness (p<0.001), and post-abrasion roughness (p<0.05). The polymerization volumetric shrinkage ranged from 2.86% to 4.13%, with the highest shrinkage seen among the OBLs. Both Monomer elution from the OBLs was statistically significantly higher (p<0.001). Statistically significantly higher cytotoxicity combined with altered morphology and loss of confluence was detected in the cells exposed to extracts from the OBLs. CONCLUSIONS The OBLs were in general outdone by the conventional composite. CLINICAL SIGNIFICANCE OBLs restorative materials have become pervasive in the dental market. Manufacturers often promise equal or better characteristics than existing brand-name composites, but at a lower price. Dentists are highly recommended to reconsider utilization of OBLs lacking sound scientific scrutiny, and our findings underscore this recommendation.
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Mogilski S, Kubacka M, Łażewska D, Więcek M, Głuch-Lutwin M, Tyszka-Czochara M, Bukowska-Strakova K, Filipek B, Kieć-Kononowicz K. Aryl-1,3,5-triazine ligands of histamine H 4 receptor attenuate inflammatory and nociceptive response to carrageen, zymosan and lipopolysaccharide. Inflamm Res 2016; 66:79-95. [PMID: 27766379 PMCID: PMC5209447 DOI: 10.1007/s00011-016-0997-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Revised: 10/06/2016] [Accepted: 10/11/2016] [Indexed: 12/30/2022] Open
Abstract
Objective and design Histamine H4 receptor (H4R) offers a great potential for new therapeutic strategies for the treatment of inflammation-based diseases. The aim of this study is to present the pharmacological profile of two recently synthesized ligands of H4R with particular reference to their anti-inflammatory and analgesic activity. Materials and subjects We used mice and rats in the in vivo tests. We also used murine RAW 264.7 cells and isolated guinea-pig ileum in in vitro test. Treatments In the in vivo tests, animals were pre-treated with the increasing doses of investigated compounds (12.5, 25 and 50 mg/kg) and reference compounds: JNJ7777120 (25 mg/kg), indomethacin (10 mg/kg). Macrophages were pre-treated with two concentrations of tested compounds 100 and 10 µM. Methods We examined anti-inflammatory and analgesic effects of the new H4R antagonists in the in vivo models of inflammation induced by carrageenan or zymosan. We assessed the level of cAMP and release of cytokines, ROS and NO in lipopolysaccharide (LPS)-stimulated RAW 264.7 macrophages. Moreover, we assessed the affinity of the investigated compounds for histamine H1 receptor in functional studies. Results Both investigated compounds reduced paw edema, mechanical and thermal hyperalgesia in the carrageenan-induced acute inflammation. Moreover, administration of the investigated compounds resulted in decreased granulocyte influx and attenuated nociceptive reaction in the zymosan-induced peritonitis model. In the same model of inflammation, the investigated compounds reduced vascular permeability; however, this effect was observed only after the highest applied dose. Furthermore, the test compounds had no impact on cell viability in the experiments on RAW 264.7 macrophages. In these cells, stimulated with LPS, the test compounds decreased reactive oxygen species (ROS) production. They increased the cellular concentration of cAMP and attenuated the production of inflammatory cytokines such as TNFα and IL-1β. All results were comparable to those obtained for the reference compound JNJ7777120 with the exception of the impact on NO production. Nevertheless, this effect was similar to that obtained for the other reference compound rolipram, which is a phosphodiesterase 4 (PDE 4) inhibitor. Further experiments revealed that both of the investigated compounds possessed relatively low affinity for histamine H1 receptor and do not inhibit the activity of the PDE 4B1 enzyme. In addition, all the effects of the investigated compounds in in vivo experiments were observed at doses that did not cause neurologic deficits in rotarod test and did not reduce spontaneous locomotor activity. Conclusions Our results demonstrate the anti-inflammatory and analgesic activity of the new aryl-1,3,5-triazine derivatives, which are primarily H4R–dependent.
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Affiliation(s)
- Szczepan Mogilski
- Departament of Pharmacodynamics, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland.
| | - Monika Kubacka
- Departament of Pharmacodynamics, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Dorota Łażewska
- Department of Technology and Biotechnology of Drugs, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Małgorzata Więcek
- Department of Technology and Biotechnology of Drugs, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Monika Głuch-Lutwin
- Department of Pharmacobiology, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Krakow, Poland
| | - Małgorzata Tyszka-Czochara
- Department of Radioligands, Faculty of Pharmacy, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Karolina Bukowska-Strakova
- Department of Medical Biotechnology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland.,Department of Clinical Immunology and Transplantology, Polish-American Institute of Pediatrics, Medical College, Jagiellonian University, Krakow, Poland
| | - Barbara Filipek
- Departament of Pharmacodynamics, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
| | - Katarzyna Kieć-Kononowicz
- Department of Technology and Biotechnology of Drugs, Jagiellonian University Medical College, Medyczna 9, 30-688, Kraków, Poland
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Longo DL, Paula-Silva FWG, Faccioli LH, Gatón-Hernández PM, Queiroz AMD, Silva LABD. Cytotoxicity and cytokine expression induced by silorane and methacrylate-based composite resins. J Appl Oral Sci 2016; 24:338-43. [PMID: 27556204 PMCID: PMC4990362 DOI: 10.1590/1678-775720150449] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2015] [Accepted: 04/11/2016] [Indexed: 12/31/2022] Open
Abstract
OBJECTIVE The aim of this study was to evaluate cytotoxicity and cytokine production induced by light-cured or non-light-cured methacrylate-based and silorane composite resins in RAW 264.7 macrophages. MATERIAL AND METHODS Cells were stimulated with the extracts from light-cured or non-light-cured composite resins. After incubation for 24 h, cytotoxicity was assessed with the lactate dehydrogenase (LDH) and methyl thiazolyl tetrazolium (MTT) assays, and total protein was quantified using the Lowry method. TNF-α detection was examined with an enzyme-linked immunosorbent assay (ELISA) conducted with cell supernatants after cell stimulation for 6, 12, and 24 h. Data were analyzed using one-way analysis of variance (ANOVA) and Tukey's post hoc test (α=0.05). RESULTS KaloreTM and FiltekTM Silorane were cytotoxic with or without light curing (p<0.05) after 24 h of incubation. KaloreTM stimulated the early production of TNF-α in comparison with control (p<0.05), whereas FiltekTM Silorane did not affect TNF-α levels after 6 and 12 h (p>0.05). However, after 24 h FiltekTM Silorane inhibited the production of TNF-α (p<0.05). CONCLUSIONS KaloreTM and FiltekTM Silorane were cytotoxic regardless of light curing. The extract obtained from KaloreTM after 15 days of incubation stimulated the production of TNF-α, unlike that obtained from FiltekTM Silorane.
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Affiliation(s)
- Daniele Lucca Longo
- - Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, SP, Brasil
| | | | - Lucia Helena Faccioli
- - Universidade de São Paulo, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Departamento de Análises Clínicas, Ribeirão Preto, SP, Brasil
| | - Patrícia Maria Gatón-Hernández
- - Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, SP, Brasil.,- Universitat de Barcelona, Facultat d'Odontologia, Department d'Odontopediatria, Barcelona, España
| | - Alexandra Mussolino de Queiroz
- - Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, SP, Brasil
| | - Léa Assed Bezerra da Silva
- - Universidade de São Paulo, Faculdade de Odontologia de Ribeirão Preto, Departamento de Clínica Infantil, Ribeirão Preto, SP, Brasil
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Mogilski S, Kubacka M, Redzicka A, Kazek G, Dudek M, Malinka W, Filipek B. Antinociceptive, anti-inflammatory and smooth muscle relaxant activities of the pyrrolo[3,4-d]pyridazinone derivatives: Possible mechanisms of action. Pharmacol Biochem Behav 2015; 133:99-110. [PMID: 25847619 DOI: 10.1016/j.pbb.2015.03.019] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2014] [Revised: 03/21/2015] [Accepted: 03/31/2015] [Indexed: 12/18/2022]
Abstract
The aim of this study was to evaluate the analgesic as well as anti-inflammatory activities of the new pyrrolo[3,4-d]pyridazinone derivatives. Moreover, the present study attempted to assess some of the mechanisms involved in the pharmacological activity of these compounds. In the previous studies it was shown that these compounds were highly active in the phenylbenzoquinone-induced 'writhing syndrome' test and had much lower activity in the hot plate, which indicates that mainly peripheral mechanisms of analgesia are involved in their effects. In these extended studies the analgesic activity of two tested compounds (4c, 4f) was confirmed in some animal models of pain. The studied compounds showed a significant and dose-related antinociceptive effect in the models of pain induced by formalin, capsaicin and glutamic acid. Both compounds decreased the edema formation and one of them (4c) attenuated mechanical hyperalgesia in carrageenan-induced paw inflammation in rats. Furthermore, both compounds inhibited cell migration, plasma exudation and nociceptive reaction in zymosan A-induced mouse peritonitis. In the subsequent studies, including experiments on isolated organs (ileum, trachea, aorta), radioligand assays and biochemical tests, it was demonstrated that analgesic and anti-inflammatory effects of the investigated structures are largely due to their competitive antagonism for histamine H1 receptor. The influence on the level of cAMP in inflammatory cells (shown in RAW 264.7 macrophages) and subsequent inhibition of cytokine (TNFα, IL-1β) release can also be one of the important mechanisms of their action. Moreover some additional mechanisms may also be involved in the eventual analgesic effect of tested pyrrolo[3,4-d]pyridazinone derivatives.
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Affiliation(s)
- Szczepan Mogilski
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, 9 Medyczna Str., 30-688 Kraków, Poland.
| | - Monika Kubacka
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, 9 Medyczna Str., 30-688 Kraków, Poland
| | - Aleksandra Redzicka
- Department of Chemistry of Drugs, Wrocław Medical University, 211 Borowska Str., 50-556 Wrocław, Poland
| | - Grzegorz Kazek
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, 9 Medyczna Str., 30-688 Kraków, Poland
| | - Magdalena Dudek
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, 9 Medyczna Str., 30-688 Kraków, Poland
| | - Wiesław Malinka
- Department of Chemistry of Drugs, Wrocław Medical University, 211 Borowska Str., 50-556 Wrocław, Poland
| | - Barbara Filipek
- Department of Pharmacodynamics, Faculty of Pharmacy, Medical College, Jagiellonian University, 9 Medyczna Str., 30-688 Kraków, Poland
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Ferracane JL, Pfeifer CS, Hilton TJ. Microstructural Features of Current Resin Composite Materials. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s40496-014-0029-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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