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Jain P, Satija J, Sudandiradoss C. Discovery of andrographolide hit analog as a potent cyclooxygenase-2 inhibitor through consensus MD-simulation, electrostatic potential energy simulation and ligand efficiency metrics. Sci Rep 2023; 13:8147. [PMID: 37208387 PMCID: PMC10199084 DOI: 10.1038/s41598-023-35192-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2022] [Accepted: 05/14/2023] [Indexed: 05/21/2023] Open
Abstract
Cyclooxygenase-2 (COX-2) is the key enzyme responsible for the conversion of arachidonic acid to prostaglandins that display pro-inflammatory properties and thus, it is a potential target protein to develop anti-inflammatory drugs. In this study, chemical and bio-informatics approaches have been employed to find a novel potent andrographolide (AGP) analog as a COX-2 inhibitor having better pharmacological properties than aspirin and rofecoxib (controls). The full amino acid sequenced human Alpha fold (AF) COX-2 protein (604AA) was selected and validated for its accuracy against the reported COX-2 protein structures (PDB ID: 5F19, 5KIR, 5F1A, 5IKQ and 1V0X) followed by multiple sequence alignment analysis to establish the sequence conservation. The systematic virtual screening of 237 AGP analogs against AF-COX-2 protein yielded 22 lead compounds based on the binding energy score (< - 8.0 kcal/mol). These were further screened out to 7 analogs by molecular docking analysis and investigated further for ADMET prediction, ligand efficiency metrics calculations, quantum mechanical analysis, MD simulation, electrostatic potential energy (EPE) docking simulation, and MM/GBSA. In-depth analysis revealed that AGP analog A3 (3-[2-[(1R,4aR,5R,6R,8aR)-6-hydroxy-5,6,8a-trimethyl-2-methylidene-3,4,4a,5,7,8-hexahydro-1H-naphthalen-1-yl]ethylidene]-4-hydroxyoxolan-2-one) forms the most stable complex with the AF-COX-2 showing the least RMSD value (0.37 ± 0.03 nm), a good number of hydrogen bonds (protein-ligand H-bond = 11, and protein H-bond = 525), minimum EPE score (- 53.81 kcal/mol), and lowest MM-GBSA before and after simulation (- 55.37 and - 56.25 kcal/mol, respectively) value compared to other analogs and controls. Thus, we suggest that the identified A3 AGP analog could be developed as a promising plant-based anti-inflammatory drug by inhibiting COX-2.
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Affiliation(s)
- Priyanka Jain
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - Jitendra Satija
- Centre for Nanobiotechnology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India
| | - C Sudandiradoss
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore, Tamil Nadu, 632014, India.
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2
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Küçükler S, Kandemir FM, Yıldırım S. Protective effect of chrysin on indomethacin induced gastric ulcer in rats: role of multi-pathway regulation. Biotech Histochem 2022; 97:490-503. [PMID: 35026960 DOI: 10.1080/10520295.2021.2014569] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
We investigated the potential gastroprotective effects of chrysin on indomethacin induced gastric ulcers in rats. We used six groups of animals: control; indomethacin (Indo); reference (Ulcuran®); indomethacin + 25 mg/kg chrysin (Indo + CHR25); indomethacin + 50 mg/kg chrysin (Indo + CHR50); indomethacin + 100 mg/kg chrysin (Indo + CHR100). All doses of chrysin were given orally to rats before indomethacin. Gastric lesions were examined macroscopically and microscopically. The effects of treatment with chrysin were assessed versus a single dose of 30 mg/kg Ulcuran® (generic ranitidine) as reference standard. We also investigated gastric mucosal superoxide dismutase (SOD), glutathione (GSH), glutathione peroxidase (GPx), catalase (CAT), malonaldehyde (MDA) and arginase activities, and COX-2, PGE2, iNOS, TNF-α, IL-1β, NFκB, MPO, Bax, caspase-3 and 8-OHdG levels. We assessed caspase-3 and Bax levels using immunohistochemistry. Compared to the control and reference groups, SOD, CAT, GPx and arginase activities and GSH levels decreased, and MDA levels increased in the indomethacin induced gastric ulcer group. iNOS, TNF-α, IL-1β, NFκB, MAPK-14, MPO, Bax and 8-OHdG levels were increased in the indomethacin treated gastric group, while COX-2 activity and PGE2 levels were decreased. The three doses of chrysin co-administered with indomethacin increased COX-2 activity and PGE2 levels in rats with ulcers. Chrysin exhibited gastroprotective effects on indomethacin induced gastric ulcer due to its antioxidant, anti-inflammatory and anti-apoptotic activities.
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Affiliation(s)
- Sefa Küçükler
- Department of Biochemistry, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Fatih Mehmet Kandemir
- Department of Biochemistry, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
| | - Serkan Yıldırım
- Department of Pathology, Faculty of Veterinary Medicine, Atatürk University, Erzurum, Turkey
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3
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Pharmacological and toxicological activities of α-humulene and its isomers: A systematic review. Trends Food Sci Technol 2021. [DOI: 10.1016/j.tifs.2021.06.049] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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4
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Alves LP, da Silva Oliveira K, da Paixão Santos JA, da Silva Leite JM, Rocha BP, de Lucena Nogueira P, de Araújo Rêgo RI, Oshiro-Junior JA, Damasceno BPGDL. A review on developments and prospects of anti-inflammatory in microemulsions. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2020.102008] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Taidi L, Maurady A, Britel MR. Molecular docking study and molecular dynamic simulation of human cyclooxygenase-2 (COX-2) with selected eutypoids. J Biomol Struct Dyn 2020; 40:1189-1204. [PMID: 32990169 DOI: 10.1080/07391102.2020.1823884] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Inflammation is a key factor linked to almost all chronic and degenerative diseases implicit with certain levels of pain. In studies, over the past few years, it has been discovered that prostaglandins are the main cause of this inflammation and therefore could be blocked. Although no steroidal medications can be effective, natural compounds may offer a safer and often an effective alternative treatment for pain relief, especially for long-term use. Hence to find out natural anti-inflammatory compounds, we have highlighted five important butenolides that are eutypoid A, B, C, D and E with structure similar to that of rofecoxib, by ADMET and druglikeness analysis, followed by molecular docking with human COX-2 enzyme. Molecular docking studies revealed the importance of hydrophobic and hydrophilic amino acid residues for the stability of the ligands and that eutypoids C and E are the best candidates for the synthetic drugs with binding energy of -10.39 kcal/mol and -9.87 kcal/mol, respectively. The resulting complexes were then subject to 50 ns molecular dynamics (MD) simulation studies with the GROMACS package to analyze the stability of docked protein-ligand complexes and to assess the fluctuation and conformational changes during protein-ligand interaction. From the RMSD, RMSF, number of hydrogen bonds, SASA, PCA and MM/PBSA binding free energy analysis, we have found that out of five selected compounds eutypoid E showed good binding free energy of -174.45 kJ/mol, which is also good in other structural analyses. This compound displayed excellent pharmacological and structural properties to be drug candidates.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Loubna Taidi
- Laboratory of Innovative Technology, University Abdelmalek Essaadi, Tangier, Morocco
| | - Amal Maurady
- Laboratory of Innovative Technology, University Abdelmalek Essaadi, Tangier, Morocco.,Faculty of Sciences and Technologies of Tangier, University Abdelmalek Essaadi, Tangier, Morocco
| | - Mohammed Reda Britel
- Laboratory of Innovative Technology, University Abdelmalek Essaadi, Tangier, Morocco
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Priya D, Kathiravan MK. Molecular insights into benzene sulphonamide substituted diarylpyrazoles as cyclooxygenase-2 inhibitor and its structural modifications. J Biomol Struct Dyn 2020; 39:5093-5104. [DOI: 10.1080/07391102.2020.1785329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- D. Priya
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRMIST, Kattankulathur, India
| | - M. K. Kathiravan
- Department of Pharmaceutical Chemistry, SRM College of Pharmacy, SRMIST, Kattankulathur, India
- Dr APJ Abdul Kalam Research Lab, SRM College of Pharmacy, SRMIST, Kattankulathur, India
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7
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da Silva JCG, Dallegrave E, Rodrigues GZP, Bigolin C, Neumann TMSDO, Schuster AC, Kayser JM, Staudt LBM, Moraes MF, Farias DG, Schiling G, Raasch JR, Perassolo MS, da Silva LB, Gehlen G, Betti AH. Repeated dose of meloxicam induces genotoxicity and histopathological changes in cardiac tissue of mice. Drug Chem Toxicol 2020; 45:822-833. [PMID: 32552192 DOI: 10.1080/01480545.2020.1778018] [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: 10/24/2022]
Abstract
Meloxicam is the non-steroidal anti-inflammatory drug most used in small animals; however, studies on genotoxicity, oxidative stress, and histopathologic alterations in cardiac tissue are limited, especially at therapeutical doses used in these animals. This study evaluated the toxic effects caused by the treatment involving repeated low at higher doses of meloxicam in mice, by genotoxicity, oxidative stress, and histopathological parameters. Mice (CF1, male) received, by gavage, meloxicam at the therapeutic dose indicated for small animals (0.1 mg/kg) and at higher doses (0.5 and 1 mg/kg) for 28 days. Later, they were euthanized for blood and organ analysis. Oxidative stress was analyzed by the plasma ferric reduction capacity (FRAP) and catalase, and genotoxicity, by the comet assay and the micronucleus test. Heart, liver, lung, and kidney tissues were analyzed by the histology, and stomach and duodenum were analyzed with a magnifying glass. The relative weight of organs did not present significant alterations. However, congestion of duodenum vessels was observed at the three tested doses and caused hyperemia of stomach mucosa at 1 mg/kg. In the heart histology there was a reduction in the number of cardiomyocytes, accompanied by an increase in cell diameter (possible cell hypertrophy) dose-dependent. The highest tested dose of meloxicam also increased the DNA damage index, without alterations in the micronucleus test. Meloxicam did not affect the catalase activity but increased the FRAP (1 mg/kg). Meloxicam at the dose prescribed for small animals could potentially cause cardiac histopathologic alterations and genotoxic effects.
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Affiliation(s)
| | - Eliane Dallegrave
- Toxicology Department, Federal University of Health Sciences of Porto Alegre, Porto Alegre, Rio Grande do Sul, Brazil
| | | | - Cassiana Bigolin
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | | | - Andriéli Carolina Schuster
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Juliana Machado Kayser
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | | | - Melina Floriano Moraes
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Débora Graziela Farias
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Gabriela Schiling
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Juliana Raquel Raasch
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Magda Susana Perassolo
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Luciano Basso da Silva
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Günther Gehlen
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
| | - Andresa Heemann Betti
- Bioanalysis Department, Institute of Health Sciences, Feevale University, Novo Hamburgo, Rio Grande do Sul, Brazil
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NaPier Z, Kanim LEA, Arabi Y, Salehi K, Sears B, Perry M, Kim S, Sheyn D, Bae HW, Glaeser JD. Omega-3 Fatty Acid Supplementation Reduces Intervertebral Disc Degeneration. Med Sci Monit 2019; 25:9531-9537. [PMID: 31836696 PMCID: PMC6929565 DOI: 10.12659/msm.918649] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background Intervertebral disc (IVD) degeneration is a common cause of lower back pain, which carries substantial morbidity and economic cost. Omega-3 fatty acids (n-3 FA) are known to reduce inflammatory processes with a relatively benign side effect profile. This study aimed to investigate the effect of n-3 FA supplementation on IVD degeneration. Material/Methods Two non-contiguous lumbar discs of 12 Sprague Dawley rats were needle-punctured to induce disc degeneration. Post-surgery, rats were randomly assigned to either a daily n-3 FA diet (530 mg/kg/day of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) in a 2: 1 ratio, administered in sucrose solution) or control diet (sucrose solution only), which was given for the duration of the study. After 1 month, blood serum arachidonic acid/eicosapentaenoic acid (AA/EPA) ratios were analyzed. After 2 months, micro-MRI (magnetic resonance imaging) analysis and histological staining of disc explants were performed to analyze the IVD. Results A reduction of blood AA/EPA ratios from 40 to 20 was demonstrated after 1 month of daily supplementation with n-3 FA. Micro-MRI analysis showed an injury-induced reduction of IVD hydration, which was attenuated in rats receiving n-3 FA. Histological evaluation demonstrated the destruction of nucleus pulposus tissue in response to needle puncture injury, which was less severe in the n-3 FA diet group. Conclusions The results of this study suggest that n-3 FA dietary supplementation reduces systemic inflammation by lowering AA/EPA ratios in blood serum and has potential protective effects on the progression of spinal disc degeneration, as demonstrated by reduced needle injury-induced dehydration of intervertebral discs and reduced histological signs of IVD degeneration.
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Affiliation(s)
- Zachary NaPier
- Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopaedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Linda E A Kanim
- Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Cedars-Sinai Spine Center, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Yasaman Arabi
- Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopaedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Khosrowdad Salehi
- Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopaedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Barry Sears
- Inflammation Research Foundation, Peabody, MA, USA
| | - Mary Perry
- Inflammation Research Foundation, Peabody, MA, USA
| | - Sang Kim
- Department of Orthopaedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Dmitriy Sheyn
- Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopaedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Surgery, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Biomedical Sciences, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Hyun W Bae
- Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopaedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Cedars-Sinai Spine Center, Cedars-Sinai Medical Center, Los Angeles, CA, USA
| | - Juliane D Glaeser
- Orthopaedic Stem Cell Research Laboratory, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Department of Orthopaedics, Cedars-Sinai Medical Center, Los Angeles, CA, USA.,Board of Governors Regenerative Medicine Institute, Cedars-Sinai Medical Center, Los Angeles, CA, USA
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9
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Kameda T, Zvick J, Vuk M, Sadowska A, Tam WK, Leung VY, Bölcskei K, Helyes Z, Applegate LA, Hausmann ON, Klasen J, Krupkova O, Wuertz-Kozak K. Expression and Activity of TRPA1 and TRPV1 in the Intervertebral Disc: Association with Inflammation and Matrix Remodeling. Int J Mol Sci 2019; 20:E1767. [PMID: 30974795 PMCID: PMC6480240 DOI: 10.3390/ijms20071767] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 03/28/2019] [Accepted: 03/30/2019] [Indexed: 01/12/2023] Open
Abstract
Transient receptor potential (TRP) channels have emerged as potential sensors and transducers of inflammatory pain. The aims of this study were to investigate (1) the expression of TRP channels in intervertebral disc (IVD) cells in normal and inflammatory conditions and (2) the function of Transient receptor potential ankyrin 1 (TRPA1) and Transient receptor potential vanilloid 1 (TRPV1) in IVD inflammation and matrix homeostasis. RT-qPCR was used to analyze human fetal, healthy, and degenerated IVD tissues for the gene expression of TRPA1 and TRPV1. The primary IVD cell cultures were stimulated with either interleukin-1 beta (IL-1β) or tumor necrosis factor alpha (TNF-α) alone or in combination with TRPA1/V1 agonist allyl isothiocyanate (AITC, 3 and 10 µM), followed by analysis of calcium flux and the expression of inflammation mediators (RT-qPCR/ELISA) and matrix constituents (RT-qPCR). The matrix structure and composition in caudal motion segments from TRPA1 and TRPV1 wild-type (WT) and knock-out (KO) mice was visualized by FAST staining. Gene expression of other TRP channels (A1, C1, C3, C6, V1, V2, V4, V6, M2, M7, M8) was also tested in cytokine-treated cells. TRPA1 was expressed in fetal IVD cells, 20% of degenerated IVDs, but not in healthy mature IVDs. TRPA1 expression was not detectable in untreated cells and it increased upon cytokine treatment, while TRPV1 was expressed and concomitantly reduced. In inflamed IVD cells, 10 µM AITC activated calcium flux, induced gene expression of IL-8, and reduced disintegrin and metalloproteinase with thrombospondin motifs 5 (ADAMTS5) and collagen 1A1, possibly via upregulated TRPA1. TRPA1 KO in mice was associated with signs of degeneration in the nucleus pulposus and the vertebral growth plate, whereas TRPV1 KO did not show profound changes. Cytokine treatment also affected the gene expression of TRPV2 (increase), TRPV4 (increase), and TRPC6 (decrease). TRPA1 might be expressed in developing IVD, downregulated during its maturation, and upregulated again in degenerative disc disease, participating in matrix homeostasis. However, follow-up studies with larger sample sizes are needed to fully elucidate the role of TRPA1 and other TRP channels in degenerative disc disease.
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Affiliation(s)
- Takuya Kameda
- Institute for Biomechanics, ETH Zurich, Hoenggerbergring 64, 8093 Zurich, Switzerland.
- Department of Orthopaedic Surgery, Fukushima Medical University, 1 Hikarigaoka, Fukushima City, Fukushima 960-1295, Japan.
| | - Joel Zvick
- Institute for Biomechanics, ETH Zurich, Hoenggerbergring 64, 8093 Zurich, Switzerland.
| | - Miriam Vuk
- Institute for Biomechanics, ETH Zurich, Hoenggerbergring 64, 8093 Zurich, Switzerland.
| | - Aleksandra Sadowska
- Institute for Biomechanics, ETH Zurich, Hoenggerbergring 64, 8093 Zurich, Switzerland.
| | - Wai Kit Tam
- Department of Orthopaedics and Traumatology, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China.
| | - Victor Y Leung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, 21 Sassoon Road, Pokfulam, Hong Kong SAR, China.
| | - Kata Bölcskei
- Department of Pharmacology and Pharmacotherapy, University of Pécs, H-7624 Pécs, Szigeti út 12., Hungary.
- János Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary.
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, H-7624 Pécs, Szigeti út 12., Hungary.
- János Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Ifjúság útja 20., Hungary.
| | - Lee Ann Applegate
- Department of Musculoskeletal Medicine, Unit of Regenerative Therapy (UTR), University Hospital Lausanne, EPCR/02 Chemin des Croisettes 22, 1066 Epalinges, Switzerland.
| | - Oliver N Hausmann
- Neuro- and Spine Center, St. Anna Hospital, Sankt-Anna-Strasse 32, 6006 Luzern, Switzerland.
| | - Juergen Klasen
- Clinic Prodorso, Walchestrasse 15, 8006 Zurich, Switzerland.
| | - Olga Krupkova
- Institute for Biomechanics, ETH Zurich, Hoenggerbergring 64, 8093 Zurich, Switzerland.
| | - Karin Wuertz-Kozak
- Institute for Biomechanics, ETH Zurich, Hoenggerbergring 64, 8093 Zurich, Switzerland.
- Schön Clinic Munich Harlaching, Spine Center, Academic Teaching Hospital and Spine Research Institute of the Paracelsus Medical University Salzburg (AU), Harlachinger Str. 51, 81547 Munich, Germany.
- Department of Health Sciences, University of Potsdam, Am Neuen Palais 10, 14469 Potsdam, Germany.
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Elucidation of the molecular mechanism underlying the anti-inflammatory activity of an effective and safe bipyrazole-based compound. Inflamm Res 2019; 68:379-386. [PMID: 30874870 DOI: 10.1007/s00011-019-01225-z] [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: 07/06/2018] [Revised: 03/01/2019] [Accepted: 03/06/2019] [Indexed: 10/27/2022] Open
Abstract
INTRODUCTION Since the synthesis of acetylsalicylic acid by Hoffmann in 1897, new classes of NSAIDs have been introduced; however, their side effects have limited their clinical applications. Consequently, our team has recently synthesized a novel bipyrazole compound that showed a satisfactory efficacy and safety profile. The aim of the current study was to elucidate the molecular mechanism of this bipyrazole compound. METHOD The anti-inflammatory efficacy of the compound was assessed using formalin-induced paw edema test. Computer-assisted simulation docking experiments were carried out. Cyclooxygenase-2 (COX-2), inducible nitric oxide synthase (iNOS), neuronal nitric oxide synthase (nNOS), tumor necrosis factor-alpha (TNFα), interleukin-1 (IL1) and interleukin-10 (IL10) gene expression were quantified with real-time polymerase chain reaction (RT-PCR) using SYBR Green technology. The samples were taken from the plantar paw of mice after formalin local injection. RESULTS The efficacy of the bipyrazole compound was similar to that of indomethacin, diclofenac, and celecoxib, as proven by the formalin-induced paw edema. Docking study indicated a superior binding score for the studied compound relative to celecoxib, indomethacin, and diclofenac. RT-PCR assessment revealed a significant decrease in iNOS, COX-2, and TNFα gene expression in the bipyrazole-treated group. Moreover, a reduction in IL1 and nNOS gene expression levels and an increase in IL10 level were detected despite being insignificant compared to the control group. CONCLUSION These findings revealed the superiority of the newly synthesized bipyrazole compound not only on the binding site, but also by inhibiting most of the inflammatory mediators including TNF-α.
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Markovic M, Swanson SA, Stricker BH, Jaddoe VW, Verhulst FC, Tiemeier H, El Marroun H. Prenatal exposure to non‐steroidal anti‐inflammatory drugs (NSAIDs) and neurodevelopmental outcomes in children. Pharmacoepidemiol Drug Saf 2019; 28:452-459. [DOI: 10.1002/pds.4625] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 05/25/2018] [Accepted: 06/25/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Maja Markovic
- The Generation R Study GroupErasmus University Medical Center Rotterdam The Netherlands
- Department of Child and Adolescent PsychiatryErasmus Medical Center Rotterdam The Netherlands
| | - Sonja A. Swanson
- Department of EpidemiologyErasmus Medical Center Rotterdam The Netherlands
| | - Bruno H. Stricker
- Department of EpidemiologyErasmus Medical Center Rotterdam The Netherlands
- Inspectorate of Healthcare The Hague The Netherlands
| | - Vincent W.V. Jaddoe
- The Generation R Study GroupErasmus University Medical Center Rotterdam The Netherlands
- Department of EpidemiologyErasmus Medical Center Rotterdam The Netherlands
- Department of PediatricsErasmus Medical Center Rotterdam The Netherlands
| | - Frank C. Verhulst
- Department of Child and Adolescent PsychiatryErasmus Medical Center Rotterdam The Netherlands
| | - Henning Tiemeier
- Department of EpidemiologyErasmus Medical Center Rotterdam The Netherlands
- Department of Child and Adolescent PsychiatryErasmus Medical Center Rotterdam The Netherlands
- Department of PsychiatryErasmus Medical Center Rotterdam The Netherlands
| | - Hanan El Marroun
- The Generation R Study GroupErasmus University Medical Center Rotterdam The Netherlands
- Department of Child and Adolescent PsychiatryErasmus Medical Center Rotterdam The Netherlands
- Department of PediatricsErasmus Medical Center Rotterdam The Netherlands
- Department of Psychology, Education and Child StudiesErasmus University Rotterdam Rotterdam The Netherlands
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12
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Synthesis of new pyrazoles and pyrozolo [3,4-b] pyridines as anti-inflammatory agents by inhibition of COX-2 enzyme. Bioorg Chem 2019; 83:47-54. [DOI: 10.1016/j.bioorg.2018.10.014] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 10/06/2018] [Accepted: 10/09/2018] [Indexed: 02/07/2023]
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13
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de Macêdo SRB, de Lima LAR, de Torres SM, de Oliveira VVG, de Morais RN, Peixoto CA, Tenorio BM, Junior VADS. Effects of intratesticular injection of zinc-based solution in rats in combination with anti-inflammatory and analgesic drugs during chemical sterilization. Vet World 2018; 11:649-656. [PMID: 29915504 PMCID: PMC5993773 DOI: 10.14202/vetworld.2018.649-656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2018] [Accepted: 04/16/2018] [Indexed: 02/02/2023] Open
Abstract
Aim Chemical sterilization is a non-surgical method of contraception based on compounds injected into the testis to induce infertility. However, these injections can cause discomfort and pain able to impair the recovery of animals after this treatment. The objective of this study was to investigate if anti-inflammatories or pain relievers inhibited the sterilizing effect of zinc gluconate-based solution on the testis. Materials and Methods Adult rats were treated in groups: G1 (control), G2 (dimethyl sulfoxide + dipyrone); G3 (dipyrone/zinc); G4 (dipyrone + celecoxib/zinc); G5 (dipyrone + meloxicam/zinc), and G6 (dipyrone + dexamethasone/zinc) in a single dose per day during 7 days. Animals were analyzed at 7, 15, and 30 days after treatments. Results The zinc-induced a widespread testicular degeneration and decreased testosterone levels even in combination with anti-inflammatories or pain relievers. Testis, epididymis, prostate, and seminal vesicle had a weight reduction. The anti-inflammatory effect of dexamethasone interfered in the desired action of zinc gluconate in the 1st 15 days and celecoxib up to 7 days. Conclusion Meloxicam plus dipyrone did not impair the chemical sterilization based on zinc gluconate, and it can be used to reduce nociceptive effects in animals after chemical sterilization.
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Affiliation(s)
| | | | - Sandra Maria de Torres
- Department of Veterinary Medicine, Federal Rural University of Pernambuco, Recife, Brazil
| | | | | | - Christina Alves Peixoto
- Laboratory of Ultrastructure, Aggeu Magalhães Research Center (CPqAM), Recife, Pernambuco, Brazil
| | - Bruno Mendes Tenorio
- Department of Morphology, Federal University of Paraíba, João Pessoa, Paraíba, Brazil
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Karunakaran R, Ira Thabrew M, Thammitiyagodage GM, Galhena BP, Menuka Arawwawala L. The gastroprotective effect of ethyl acetate fraction of hot water extract of Trichosanthes cucumerina Linn and its underlying mechanisms. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2017; 17:312. [PMID: 28615015 PMCID: PMC5472002 DOI: 10.1186/s12906-017-1796-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Accepted: 05/16/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Antacids, anticholinergic drugs, histamine H2- receptor antagonists and irreversible proton pump inhibitors have been used for the treatment of gastric ulcers. However, prolonged use of these drugs may lead to series of adverse effects such as diarrhea, headache, rash, hypertension, muscular and joint pain. Therefore, there is an urgent need of more effective and safer treatments with fewer side effects. The aim of the present study was to scientifically evaluate the gastroprotective activity of fractions of the hot water extract of Trichosanthes cucumerina Linn (Family: Cucurbitaceae) aerial parts with a view to identifying the fraction with the best gastroprotective activity and the possible mechanism/s by which this fraction exert gastroprotection. METHODS Gastroprotective activity of hexane fraction (HF), ethyl acetate fraction (EF), butanol fraction (BF) and aqueous fraction (AF) were evaluated by the assessment of ability to reduce the ulcer index in ethanol-induced rat model and the mode of action by which the most active fraction mediating gastroprotection. RESULTS EF showed the maximum gastroprotection effect followed by BF and AF. EF (75 mg/kg) exhibited significantly higher gastroprotection compared to the reference drugs. Further investigations with two lower doses of EF confirmed that EF can mediated a significant and dose dependent gastroprotection. The rats treated with the EF showed significant reduction in free acidity (45%), total acidity (by 48%) in the gastric juice, increased the amount of mucus produced by the rat gastro mucosa and potent antihistamine activity (by 25.6%). EF was also rich in phenolic compounds and flavonoids. CONCLUSION Gastroprotective mechanism of EF is possibly involves inhibition of acidity, elevation in mucus content, inhibition of histamine and antioxidant mechanisms.
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Affiliation(s)
- Ramani Karunakaran
- Medical Research Institute, Dr. Danister de Silva Mawatha, Colombo, 08 Sri Lanka
| | - M. Ira Thabrew
- Institute of Biochemistry, Molecular Biology & Biotechnology, No. 90, Cumaratunga Munidasa Mawatha, Colombo, 03 Sri Lanka
| | | | - B. Prasanna Galhena
- Department of Biochemistry & Clinical Chemistry, Faculty of Medicine, University of Kelaniya, Thallagolla Road, Ragama, Sri Lanka
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Efficacy and safety of perioperative parecoxib for acute postoperative pain treatment in children: a meta-analysis. Front Med 2015; 9:496-507. [DOI: 10.1007/s11684-015-0414-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2015] [Accepted: 07/06/2015] [Indexed: 01/23/2023]
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Evaluation of Antinociceptive Activity of Ethanol Extract of Leaves of Adenanthera pavonina. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 2015:412497. [PMID: 26346723 PMCID: PMC4539466 DOI: 10.1155/2015/412497] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Accepted: 07/16/2015] [Indexed: 01/27/2023]
Abstract
Adenanthera pavonina is a deciduous tree commonly used in the traditional medicine to treat inflammation and rheumatism. The aim of this study was to evaluate the antinociceptive activity of ethanol extract of leaves of A. pavonina (EEAP). EEAP was investigated using various nociceptive models induced thermally or chemically in mice including hot plate and tail immersion test, acetic acid-induced writhing, and glutamate- and formalin-induced licking tests at the doses of 50, 100, and 200 mg/kg body weight (p.o.). In addition, to assess the possible mechanisms, involvement of opioid system was verified using naloxone (2 mg/kg) and cyclic guanosine monophosphate (cGMP) signaling pathway by methylene blue (MB; 20 mg/kg). The results have demonstrated that EEAP produced a significant and dose-dependent increment in the hot plate latency and tail withdrawal time. It also reduced the number of abdominal constrictions and paw lickings induced by acetic acid and glutamate respectively. EEAP inhibited the nociceptive responses in both phases of formalin test. Besides, the reversal effects of naloxone indicated the association of opioid receptors on the exertion of EEAP action centrally. Moreover, the enhancement of writhing inhibitory activity by MB suggests the possible involvement of cGMP pathway in EEAP-mediated antinociception. These results prove the antinociceptive activity of the leaves of A. pavonina and support the traditional use of this plant.
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Setia S, Nehru B, Sanyal SN. Celecoxib prevents colitis associated colon carcinogenesis: An upregulation of apoptosis. Pharmacol Rep 2014; 66:1083-91. [DOI: 10.1016/j.pharep.2014.07.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2013] [Revised: 07/17/2014] [Accepted: 07/17/2014] [Indexed: 01/16/2023]
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Zhang Y, Wang X, Qiu Y, Cornish J, Carr AJ, Xia Z. Effect of indomethacin and lactoferrin on human tenocyte proliferation and collagen formation in vitro. Biochem Biophys Res Commun 2014; 454:301-7. [PMID: 25450393 DOI: 10.1016/j.bbrc.2014.10.061] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Accepted: 10/13/2014] [Indexed: 10/24/2022]
Abstract
Non-steroidal anti-inflammatory drugs (NSAIDs) are widely used in patients with injuries and inflammation of tendon and ligament, and as post-surgical analgesics. The aim of this study is to investigate the effect of indomethacin, a classic NSAID and its combinational effect with an anabolic agent of skeletal tissue, lactoferrin, on the proliferation and collagen formation of human tenocytes in vitro. A factorial experimental design was employed to study the dose-dependent effect of the combination of indomethacin and lactoferrin. The results showed that indomethacin at high concentration (100 μM) inhibited human tenocyte proliferation in culture medium with 1-10% fetal bovine serum (FBS) in vitro. Also, high dose of indomethacin inhibited the collagen formation of human tenocytes in 1% FBS culture medium. Lactoferrin at 50-100 μg/ml promoted human tenocyte survival in serum-free culture medium and enhanced proliferation and collagen synthesis of human tenocytes in 1% FBS culture medium. When 50-100 μg/ml lactoferrin was used in combination with 100-200 μM indomethacin, it partially rescued the inhibitory effects of indomethacin on human tenocyte proliferation, viability and collagen formation. To our knowledge, it is the first evidence that lactoferrin is anabolic to human tenocytes in vitro and reverses potential inhibitory effects of NSAIDs on human tenocytes.
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Affiliation(s)
- Yaonan Zhang
- Centre for Nanohealth, College of Medicine, Swansea University, Singleton Park, Swansea, UK SA2 8PP; Department of Orthopaedic, Beijing Hospital of Ministry of Public Health, Beijing, China 100730
| | - Xiao Wang
- Centre for Nanohealth, College of Medicine, Swansea University, Singleton Park, Swansea, UK SA2 8PP
| | - Yiwei Qiu
- Centre for Nanohealth, College of Medicine, Swansea University, Singleton Park, Swansea, UK SA2 8PP
| | - Jillian Cornish
- Department of Medicine, University of Auckland, Private Bag 92019, Auckland, New Zealand
| | - Andrew J Carr
- Centre for Nanohealth, College of Medicine, Swansea University, Singleton Park, Swansea, UK SA2 8PP
| | - Zhidao Xia
- Centre for Nanohealth, College of Medicine, Swansea University, Singleton Park, Swansea, UK SA2 8PP.
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De Luna-Bertos E, Ramos-Torrecillas J, García-Martínez O, Guildford A, Santin M, Ruiz C. Therapeutic doses of nonsteroidal anti-inflammatory drugs inhibit osteosarcoma MG-63 osteoblast-like cells maturation, viability, and biomineralization potential. ScientificWorldJournal 2013; 2013:809891. [PMID: 24170983 PMCID: PMC3793504 DOI: 10.1155/2013/809891] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 08/14/2013] [Indexed: 01/22/2023] Open
Abstract
Nonsteroidal anti-inflammatory drugs (NSAIDs) are frequently used to reduce pain and inflammation. However, their effect on bone metabolisms is not well known, and results in the literature are contradictory. The present study focusses on the effect of dexketoprofen, ketorolac, metamizole, and acetylsalicylic acid, at therapeutic doses, on different biochemical and phenotypic pathways in human osteoblast-like cells. Osteoblasts (MG-63 cell line) were incubated in culture medium with 1-10 μM of dexketoprofen, ketorolac, metamizole, and acetylsalicylic acid. Flow cytometry was used to study antigenic profile and phagocytic activity. The osteoblastic differentiation was evaluated by mineralization and synthesis of collagen fibers by microscopy and alkaline phosphatase activity (ALP) by spectrophotometric assay. Short-term treatment with therapeutic doses of NSAIDs modulated differentiation, antigenic profile, and phagocyte activity of osteoblast-like cells. The treatment reduced ALP synthesis and matrix mineralization. However, nonsignificant differences were observed on collagen syntheses after treatments. The percentage of CD54 expression was increased with all treatments. CD80, CD86, and HLA-DR showed a decreased expression, which depended on NSAID and the dose applied. The treatments also decreased phagocyte activity in this cellular population. The results of this paper provide evidences that NSAIDs inhibit the osteoblast differentiation process thus reducing their ability to produce new bone mineralized extracellular matrix.
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Affiliation(s)
- E. De Luna-Bertos
- Department of Nursing, Faculty of Health Sciences, University of Granada, Avenida Madrid s/n, 18071 Granada, Spain
| | - J. Ramos-Torrecillas
- Department of Nursing, Faculty of Health Sciences, University of Granada, Avenida Madrid s/n, 18071 Granada, Spain
| | - O. García-Martínez
- Department of Nursing, Faculty of Health Sciences, University of Granada, Avenida Madrid s/n, 18071 Granada, Spain
| | - A. Guildford
- School of Pharmacy & Biomolecular Science, University of Brighton, Huxlye Building, Moulsecoomb, Brighton BN2 4G1, UK
| | - M. Santin
- School of Pharmacy & Biomolecular Science, University of Brighton, Huxlye Building, Moulsecoomb, Brighton BN2 4G1, UK
| | - C. Ruiz
- Department of Nursing, Faculty of Health Sciences, University of Granada, Avenida Madrid s/n, 18071 Granada, Spain
- Institute of Neurosciences, Faculty of Medicine, University of Granada, Granada Health-Science Technology Park, 18100 Armilla, Granada, Spain
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Paiva DCC, dos Santos CA, Diniz JC, Viana FA, Thomazzi SM, Falcão DA. Anti-inflammatory and antinociceptive effects of hydroalcoholic extract from Pseudobombax marginatum inner bark from caatinga potiguar. JOURNAL OF ETHNOPHARMACOLOGY 2013; 149:416-421. [PMID: 23871809 DOI: 10.1016/j.jep.2013.06.012] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2013] [Revised: 05/10/2013] [Accepted: 06/01/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The Pseudobombax marginatum (St Hil) Rob., Malvaceae, is mentioned in ethnobotanical studies. It is used as anti-inflammatory, for ulcers and gastritis, and back pain. To evaluate anti-inflammatory and antinociceptive activities a hydroalcoholic extract (HE) from inner bark was prepared. MATERIALS AND METHODS For the anti-inflammatory activity, carrageenan-induced paw edema and peritonitis models, and also myeloperoxidase assay were used. For the antinociceptiva activity acetic acid-induced writhing, hot plate and formalin tests were employed. RESULTS The HE extract exhibited an intense inhibition in carrageenan-induced edema model and also in myeloperoxidase activity at the doses of 100 and 300 mg/kg. The leukocyte migration into the peritoneal cavity was also inhibited at the doses of 30, 100 and 300 mg/kg. A similar profile was observed against acid-induced abdominal contortions and in formalin second phase test at the doses of 30 and 100 mg/kg, but this treatment did not affect the behavior of animals in the hot plate test. CONCLUSIONS The experimental data of the HE from Pseudobombax marginatum show anti-inflammatory and antinociceptiva activities, confirming the indication from traditional medicine; however further studies are required to define and isolate the active anti-inflammatory and antinociceptiva components from this active specie.
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Nadda N, Setia S, Vaish V, Sanyal SN. Role of cytokines in experimentally induced lung cancer and chemoprevention by COX-2 selective inhibitor, etoricoxib. Mol Cell Biochem 2012; 372:101-12. [PMID: 22991065 DOI: 10.1007/s11010-012-1451-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2012] [Accepted: 09/05/2012] [Indexed: 01/03/2023]
Abstract
This study explored the role of pro- and anti-inflammatory cytokines in dimethyl benz(a)anthracene (DMBA)-induced lung cancer and its subsequent correction with a COX-2 inhibitory NSAID, etoricoxib. A single dose of DMBA (20 mg/kg body weight) in 0.9 % NaCl administered intratracheally was used to induce tumors in the rat lungs in 20 weeks. The study of pro-inflammatory cytokines like IL-1β, TNF-α, and IFN-γ revealed their upregulation by DMBA administration and restoration of their levels toward normal by the treatment with etoricoxib, while the anti-inflammatory cytokine IL-2 was found to be down-regulated with carcinogen administration and corrected with etoricoxib treatment. Apoptosis was studied by mitochondrial Bcl-2/Bax ratio and staining with fluorescent dyes acridine orange/ethidium bromide. The results showed a decreased apoptotic level with DMBA which was corrected with etoricoxib. Also, mitochondrial membrane potential was studied using JC-1 and rhodamine-123, which are membrane permeant fluorescent dyes, and generate information about cells at lower and higher mitochondrial membrane potential (∆Ψ(M)). The results showed the presence of maximum number of cells with higher ∆Ψ(M) in the DMBA group and their number was considerably lowered in the other three groups.
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Affiliation(s)
- Neeti Nadda
- Department of Biophysics, Panjab University, Chandigarh 160014, India
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Downregulation of NF-κB and PCNA in the regulatory pathways of apoptosis by cyclooxygenase-2 inhibitors in experimental lung cancer. Mol Cell Biochem 2012; 369:75-86. [PMID: 22752388 DOI: 10.1007/s11010-012-1370-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 06/14/2012] [Indexed: 10/28/2022]
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Nadda N, Vaish V, Setia S, Sanyal SN. Angiostatic role of the selective cyclooxygenase-2 inhibitor etoricoxib (MK0663) in experimental lung cancer. Biomed Pharmacother 2012; 66:474-83. [PMID: 22681911 DOI: 10.1016/j.biopha.2012.04.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2012] [Accepted: 04/15/2012] [Indexed: 10/28/2022] Open
Abstract
Lung cancer was induced in Sprague-Dawley rats by a single intra-tracheal instillation of 9,10-dimethybenz(a)anthracene (DMBA) and evaluated the anti-angiogenic action of etoricoxib, which is a selective cyclooxygenase-2 (COX-2) inhibitor. The animals were divided into four groups. Group 1 (Control) received 0.9% (w/v) normal saline intra-tracheal and 0.5% (w/v) carboxymethyl cellulose per oral daily as the vehicle of the drug, Group 2 received DMBA (20 mg/kg) intra-tracheal once, Group 3 received a daily oral dose of etoricoxib (0.6 mg/kg bw) in addition to the DMBA while Group 4 received etoricoxib alone. Morphological and histological analysis confirmed the presence of lung tumors 20 weeks after the administration of DMBA. Expressions of COX-2, MMP-2, MMP-9, MCP-1, MIP-1β and VEGF were studied by immunofluorescence, Western immunoblot and mRNA studies, which showed a higher expression of these proteins in the DMBA-treated animals but much lower in DMBA+etoricoxib. Gelatin zymography as applied for the detection of the extracellular protein degrading enzymes, matrix metalloproteinases showed more intense activity in DMBA-treated rats as compared to the other groups. Also, the isolated alveolar macrophages were stained with Merocyanine540 (MC540) to study the membrane fluidity and lipid packing effect. DMBA treatment resulted in a significant increase in the number of lung cells exhibiting a high intensity of MC540 staining, which was reduced by the co-administration of etoricoxib. Thus the effects of etoricoxib on the expression of the angiogenic proteins have been observed, which clearly shows an anti-angiogenic mechanism of action of etoricoxib in lung cancer chemoprevention.
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Affiliation(s)
- N Nadda
- Department of Biophysics, Panjab University, Chandigarh 160014, India
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Gonzalez C, Zegpi C, Noriega V, Prieto JC, Miranda HF. Synergism between dexketoprofen and meloxicam in an orofacial formalin test was not modified by opioid antagonists. Pharmacol Rep 2011; 63:433-40. [DOI: 10.1016/s1734-1140(11)70509-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2010] [Revised: 10/19/2010] [Indexed: 12/01/2022]
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Treatment of experimental periodontal disease by a selective inhibitor of cyclooxygenase-2 with scaling and root planing (SRP). Inflammopharmacology 2010; 18:293-301. [DOI: 10.1007/s10787-010-0059-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2009] [Accepted: 09/21/2010] [Indexed: 11/28/2022]
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Thakur P, Sanyal S. Induction of pulmonary carcinogenesis in Wistar rats by a single dose of 9, 10 Dimethylbenz(a)anthracene (DMBA) and the chemopreventive role of Diclofenac. Exp Mol Pathol 2010; 88:394-400. [DOI: 10.1016/j.yexmp.2010.03.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2009] [Revised: 03/04/2010] [Accepted: 03/04/2010] [Indexed: 10/19/2022]
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Schilte MN, Celie JW, ter Wee PM, Beelen RH, van den Born J. Factors Contributing to Peritoneal Tissue Remodeling in Peritoneal Dialysis. Perit Dial Int 2009. [DOI: 10.1177/089686080902900604] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Abstract
Peritoneal dialysis (PD) is associated with functional and structural changes of the peritoneal membrane. In this review we describe factors contributing to peritoneal tissue remodeling, including uremia, peritonitis, volume loading, the presence of a catheter, and the PD fluid itself. These factors initiate recruitment and activation of peritoneal cells such as macrophages and mast cells, as well as activation of peritoneal cells, including mesothelial cells, fibroblasts, and endothelial cells. We provide an overview of cytokines, growth factors, and other mediators involved in PD-associated changes. Activation of downstream pathways of cellular modulators can induce peritoneal tissue remodeling, leading to ultrafiltration loss. Identification of molecular pathways, cells, and cytokines involved in the development of angiogenesis, fibrosis, and membrane failure may lead to innovative therapeutic strategies that can protect the peritoneal membrane from the consequences of long-term PD.
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Affiliation(s)
- Margot N. Schilte
- Departments of Molecular Cell Biology and Immunology VU University Medical Center, Amsterdam, The Netherlands
| | - Johanna W.A.M Celie
- Departments of Molecular Cell Biology and Immunology VU University Medical Center, Amsterdam, The Netherlands
| | - Piet M. ter Wee
- Nephrology, VU University Medical Center, Amsterdam, The Netherlands
| | - Robert H.J. Beelen
- Departments of Molecular Cell Biology and Immunology VU University Medical Center, Amsterdam, The Netherlands
| | - Jacob van den Born
- Departments of Molecular Cell Biology and Immunology VU University Medical Center, Amsterdam, The Netherlands
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Epigenetic side-effects of common pharmaceuticals: A potential new field in medicine and pharmacology. Med Hypotheses 2009; 73:770-80. [DOI: 10.1016/j.mehy.2008.10.039] [Citation(s) in RCA: 158] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2008] [Revised: 09/29/2008] [Accepted: 10/01/2008] [Indexed: 11/22/2022]
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