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Taher MA, Laboni AA, Islam MA, Hasnat H, Hasan MM, Ferdous J, Shompa SA, Khan M. Isolation, characterization and pharmacological potentials of methanol extract of Cassia fistula leaves: Evidenced from mice model along with molecular docking analysis. Heliyon 2024; 10:e28460. [PMID: 38590868 PMCID: PMC10999937 DOI: 10.1016/j.heliyon.2024.e28460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 03/17/2024] [Accepted: 03/19/2024] [Indexed: 04/10/2024] Open
Abstract
The purpose of the current investigation was to conduct a detailed analysis of the chemical components and medicinal properties of the methanolic crude extract derived from the leaves of Cassia fistula. This analysis was carried out using both experimental (in vivo) and computational (in silico) methods. Eleven chemicals were chromatographically isolated using GC-MS/MS, which utilizes a library of NIST and Wiley 2020 versions. FTIR analysis of the extract was performed to identify the functional group of the compounds. The glucose-lowering capacity, analgesic, and anti-diarrheal activities of methanolic crude extract were analyzed utilizing a well-known oral glucose tolerance test, tail immersion method, writhing assay, and castor oil-induced diarrheal mice methods, respectively. After 60 min, 120 min, and 180 min of loading the drugs, a significant reduction of blood glucose levels was examined (p < 0.05) in all the extracts of this plant (200 mg/kg, 400 mg/kg and 600 mg/kg) utilized in this research at a time-dependent manner. Similarly, all the crude extracts showed significant (p < 0.05) effects against pain centrally and peripherally compared to the standard drug morphine (2 mg/kg bw) and diclofenac sodium (50 mg/kg bw). Moreover, the methanol extract (400 mg/kg bw) manifested anti-diarrheal efficacy by inhibiting 72.0 % of the diarrheal episode in mice compared to the standard drug loperamide (inhibition = 80.0%). The results of the computational investigations corroborated existing in-vivo findings. Greater or close to equivalent binding affinity to the active binding sites of kappa opioid receptor, glucose transporter 3 (GLUT 3), and cyclooxygenase 2 was indicative of the potential anti-diarrheal, hypoglycemic, and analgesic characteristics of the isolated compounds (COX-2). Moreover, anticancer and antimicrobial potentiality was also found impressive through evaluation of binding affinity with epidermal growth factor receptor (EGFR) and dihydrofolate reductase (DHFR) receptors. Results from this study indicated that C. fistula might be a beneficial natural resource for treating diarrhea, hyperglycemia, and pain. However, additional research is required to conduct a comprehensive phytochemical screening and establish precise action mechanisms of the crude extract or the plant-derived compounds.
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Affiliation(s)
- Mohammad Abdullah Taher
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Laboratory Road, Dhaka, 1205, Bangladesh
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Dhaka, Bangladesh
| | - Aysha Akter Laboni
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Laboratory Road, Dhaka, 1205, Bangladesh
| | - Md Ashraful Islam
- Department of Pharmacy, State University of Bangladesh, Dhaka, Bangladesh
| | - Hasin Hasnat
- Department of Pharmacy, State University of Bangladesh, Dhaka, Bangladesh
| | | | | | | | - Mala Khan
- Bangladesh Reference Institute for Chemical Measurements (BRiCM), Laboratory Road, Dhaka, 1205, Bangladesh
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Abd-Elmawla MA, Abdelalim E, Ahmed KA, Rizk SM. The neuroprotective effect of pterostilbene on oxaliplatin-induced peripheral neuropathy via its anti-inflammatory, anti-oxidative and anti-apoptotic effects: Comparative study with celecoxib. Life Sci 2023; 315:121364. [PMID: 36610639 DOI: 10.1016/j.lfs.2022.121364] [Citation(s) in RCA: 14] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Revised: 12/22/2022] [Accepted: 12/30/2022] [Indexed: 01/06/2023]
Abstract
BACKGROUND Oxaliplatin is one of the first-line drugs in solid tumors treatment. However, neuropathy is a devastating side effect leading to poor compliance and treatment cessation. AIM The current study explored pterostilbene plausible neuroprotective effects aiming to ascertain the potential mechanisms involved in relieving oxaliplatin-induced peripheral neuropathy (OIPN) and investigating whether pterostilbene and celecoxib combination could show better relief. MAIN METHODS Rats were divided into six groups; control, pterostilbene (40 mg/kg/day, p.o. for 5 weeks), oxaliplatin (4 mg/kg, i.p. twice per week for 4.5 weeks), celecoxib (30 mg/kg/day, p.o. for 5 weeks) and combination of pterostilbene and celecoxib. Behavioral tests and histopathological analysis of sciatic nerves were done. MAPKs, cytokines, COX-2, and PGE2 gene and protein expressions were estimated using qRT-PCR, western, and ELISA techniques. Malondialdehyde (MDA) and total antioxidant capacity (TAC) were assessed by colorimetric assay while apoptotic markers by immunohistochemical analysis and qRT-PCR. KEY FINDINGS The study revealed that pterostilbene and celecoxib averted oxaliplatin-induced behavioral and motor impairments along with restoration of histopathological changes. Moreover, pterostilbene and celecoxib have significantly attenuated sciatic nerve: p38 MAPK, JNK, ERK1/2, NF-κB, COX-2, PGE2, TNF-α, and interleukins levels. Pterostilbene and celecoxib have reduced caspase-3, Bax, and MDA while increasing Bcl-2 level and TAC. SIGNIFICANCE Altogether, Pterostilbene mitigates OIPN by interrupting the vicious cycle of inflammation, oxidation, and apoptosis. Furthermore, pterostilbene and celecoxib show comparable attenuation on MAPKs cascades, inflammatory cytokines, oxidative and apoptotic markers. Likewise, co-administration of pterostilbene and celecoxib shows further relief of neuropathic pain.
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Affiliation(s)
- Mai A Abd-Elmawla
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Eman Abdelalim
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| | - Kawkab A Ahmed
- Department of Pathology, Faculty of Veterinary Medicine, Cairo University, Giza, Egypt
| | - Sherine M Rizk
- Department of Biochemistry, Faculty of Pharmacy, Cairo University, Cairo, Egypt
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Carvalho NS, Lemes JBP, Pagliusi M, Machado ACDS, Malange KF, Pral LP, Fachi JL, Nishijima CM, Dos Santos GG, Tambeli CH, Sartori CR, Vinolo MAR, Parada CA. Neutrophil-Derived COX-2 has a Key Role during Inflammatory Hyperalgesia. Inflammation 2022; 45:2280-2293. [PMID: 35840810 DOI: 10.1007/s10753-022-01690-5] [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] [Received: 04/26/2022] [Accepted: 05/20/2022] [Indexed: 11/28/2022]
Abstract
Inflammation is a vital process for the injured tissue restoration and one of its hallmarks is inflammatory hyperalgesia. The cyclooxygenase (COX) pathway is strongly related to the inflammatory and painful process. Usually, the COX-1 isoform is described as homeostatic, while COX-2 is characterized as inducible in inflammatory conditions. Although it is well known that neutrophil cells are the first to arrive at the inflamed site and the major source of COX-2 is still unknown, the specific role of neutrophil-derived COX-2 in the pain process is. Thus, in the present study, we demonstrate for the first time that neutrophil-derived COX-2 plays a key role in peripheral inflammatory hyperalgesia. Conditional knockout mice for COX-2 in neutrophils (COX-2 fl/fl: Mrp8cre±) exhibited higher pain sensitivity after carrageenan (CG) injection and long-lasting IL-1β-induced hyperalgesia compared with the control group (COX-2 fl/fl). Also, CG-induced inflammation in COX-2 fl/fl: Mrp8cre± mice showed COX-1 overexpression, and increased neutrophil migration and pro-inflammatory cytokines (e.g., IL-1β and CXCL1). These findings revealed that neutrophil COX-2 has an important role in the regulation of inflammatory hyperalgesia.
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Affiliation(s)
- Nathalia Santos Carvalho
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Julia Borges Paes Lemes
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.,Department of Anesthesiology, University of California, San Diego, LA Jolla, CA, USA
| | - Marco Pagliusi
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.,Department of Pharmacology, University of São Paulo, Ribeirão Preto, SP, Brazil
| | - Ana Carolina Dos Santos Machado
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Kauê Franco Malange
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.,Department of Anesthesiology, University of California, San Diego, LA Jolla, CA, USA
| | - Laís Passariello Pral
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology, and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - José Luís Fachi
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology, and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Catarine Massucato Nishijima
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | | | - Claudia Herrera Tambeli
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Cesar Renato Sartori
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil
| | - Marco Aurélio Ramirez Vinolo
- Laboratory of Immunoinflammation, Department of Genetics, Evolution, Microbiology, and Immunology, Institute of Biology, University of Campinas, Campinas, Brazil
| | - Carlos Amilcar Parada
- Laboratory of the Study of Pain, Department of Structural and Functional Biology, University of Campinas, Rua Monteiro Lobato, 255, Campinas, SP, CEP, 13083-862, Brazil.
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Jayesh K, Karishma R, Vysakh A, Gopika P, Latha MS. Terminalia bellirica (Gaertn.) Roxb fruit exerts anti-inflammatory effect via regulating arachidonic acid pathway and pro-inflammatory cytokines in lipopolysaccharide-induced RAW 264.7 macrophages. Inflammopharmacology 2018; 28:10.1007/s10787-018-0513-x. [PMID: 30003465 DOI: 10.1007/s10787-018-0513-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Accepted: 07/03/2018] [Indexed: 12/31/2022]
Abstract
Terminalia bellirica (Gaertn.) Roxb. (Family: Combretaceae), known as Bhibhitaki in Sanskrit and locally known as Behera in India, has been used for centuries in Ayurveda, a universal system of medicine in India. The dried fruit of T. bellirica is used for the treatment of several disorders. The present study aims to explore the anti-inflammatory effects of aqueous acetone extracts isolated from T. bellirica (AATB) in RAW 264.7 cell lines. The AATB was prepared from the fruits of T. bellirica. Different concentrations of AATB (6.25-100 μg/ml) were used for MTT assay. The anti-inflammatory effect of AATB was evaluated by using different assays such as total cyclooxygenase (COX), 5-lipoxygenase (5-LOX) activity, nitrate and reactive oxygen species (ROS) production. The mRNA level expression of COX-2, tumor necrosis factor alpha (TNF-α) and interleukin-6 (IL-6) were studied in LPS stimulated RAW 264.7 cells. AATB treatment significantly diminished the elevated levels of inflammatory markers. Moreover, AATB downregulated the mRNA level expression of TNF-α, IL-6 and COX-2 genes. The result of our study suggest the use of AATB and is able to reduce inflammatory conditions associated with various diseases.
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Affiliation(s)
- Kuriakose Jayesh
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India
| | - Raj Karishma
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India
| | - A Vysakh
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India
| | - Prasad Gopika
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India
| | - M S Latha
- School of Biosciences, Mahatma Gandhi University, Priyadarshini Hills, Kottayam, Kerala, India.
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Should Nonsteroidal Anti-inflammatory Drugs be Contraindicated in the Perioperative Period After Spinal Fusion Surgery? Clin Spine Surg 2018; 31:223-224. [PMID: 29757754 DOI: 10.1097/bsd.0000000000000636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Sisignano M, Baron R, Scholich K, Geisslinger G. Mechanism-based treatment for chemotherapy-induced peripheral neuropathic pain. Nat Rev Neurol 2014; 10:694-707. [DOI: 10.1038/nrneurol.2014.211] [Citation(s) in RCA: 184] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Dawes JM, Antunes-Martins A, Perkins JR, Paterson KJ, Sisignano M, Schmid R, Rust W, Hildebrandt T, Geisslinger G, Orengo C, Bennett DL, McMahon SB. Genome-wide transcriptional profiling of skin and dorsal root ganglia after ultraviolet-B-induced inflammation. PLoS One 2014; 9:e93338. [PMID: 24732968 PMCID: PMC3986071 DOI: 10.1371/journal.pone.0093338] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2013] [Indexed: 11/18/2022] Open
Abstract
Ultraviolet-B (UVB)-induced inflammation produces a dose-dependent mechanical and thermal hyperalgesia in both humans and rats, most likely via inflammatory mediators acting at the site of injury. Previous work has shown that the gene expression of cytokines and chemokines is positively correlated between species and that these factors can contribute to UVB-induced pain. In order to investigate other potential pain mediators in this model we used RNA-seq to perform genome-wide transcriptional profiling in both human and rat skin at the peak of hyperalgesia. In addition we have also measured transcriptional changes in the L4 and L5 DRG of the rat model. Our data show that UVB irradiation produces a large number of transcriptional changes in the skin: 2186 and 3888 genes are significantly dysregulated in human and rat skin, respectively. The most highly up-regulated genes in human skin feature those encoding cytokines (IL6 and IL24), chemokines (CCL3, CCL20, CXCL1, CXCL2, CXCL3 and CXCL5), the prostanoid synthesising enzyme COX-2 and members of the keratin gene family. Overall there was a strong positive and significant correlation in gene expression between the human and rat (R = 0.8022). In contrast to the skin, only 39 genes were significantly dysregulated in the rat L4 and L5 DRGs, the majority of which had small fold change values. Amongst the most up-regulated genes in DRG were REG3B, CCL2 and VGF. Overall, our data shows that numerous genes were up-regulated in UVB irradiated skin at the peak of hyperalgesia in both human and rats. Many of the top up-regulated genes were cytokines and chemokines, highlighting again their potential as pain mediators. However many other genes were also up-regulated and might play a role in UVB-induced hyperalgesia. In addition, the strong gene expression correlation between species re-emphasises the value of the UVB model as translational tool to study inflammatory pain.
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MESH Headings
- Animals
- Antigens, Neoplasm/metabolism
- Biomarkers, Tumor/metabolism
- Chemokine CCL2/metabolism
- Ganglia, Spinal/metabolism
- Ganglia, Spinal/pathology
- Ganglia, Spinal/radiation effects
- Gene Expression Profiling
- Gene Expression Regulation/radiation effects
- Genome/genetics
- Humans
- Inflammation/genetics
- Inflammation/pathology
- Lectins, C-Type/metabolism
- Male
- Models, Biological
- Pancreatitis-Associated Proteins
- Rats, Wistar
- Reference Standards
- Reproducibility of Results
- Sequence Analysis, RNA
- Skin/metabolism
- Skin/pathology
- Skin/radiation effects
- Transcription, Genetic/radiation effects
- Ultraviolet Rays
- Up-Regulation/genetics
- Up-Regulation/radiation effects
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Affiliation(s)
- John M. Dawes
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Ana Antunes-Martins
- Wolfson Centre for Age-Related Disease, King's College London, London, United Kingdom
| | - James R. Perkins
- Department of Structural and Molecular Biology, University College London, London, United Kingdom
| | - Kathryn J. Paterson
- Wolfson Centre for Age-Related Disease, King's College London, London, United Kingdom
| | - Marco Sisignano
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/Zentrum fuer Arzneimittelforschung, -Entwicklung und -Sicherheit (ZAFES), University Hospital, Goethe-University, Frankfurt am Main, Germany
| | - Ramona Schmid
- Boehringer Ingelheim Pharma GmbH & Co. KG, Target Discovery Research Germany, Biberach an der Riß, Germany
| | - Werner Rust
- Boehringer Ingelheim Pharma GmbH & Co. KG, Target Discovery Research Germany, Biberach an der Riß, Germany
| | - Tobias Hildebrandt
- Boehringer Ingelheim Pharma GmbH & Co. KG, Target Discovery Research Germany, Biberach an der Riß, Germany
| | - Gerd Geisslinger
- Institute of Clinical Pharmacology, Pharmazentrum Frankfurt/Zentrum fuer Arzneimittelforschung, -Entwicklung und -Sicherheit (ZAFES), University Hospital, Goethe-University, Frankfurt am Main, Germany
| | - Christine Orengo
- Department of Structural and Molecular Biology, University College London, London, United Kingdom
| | - David L. Bennett
- Nuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, United Kingdom
| | - Stephen B. McMahon
- Wolfson Centre for Age-Related Disease, King's College London, London, United Kingdom
- * E-mail:
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Kiefer W, Dannhardt G. COX-2 inhibition and pain management: a review summary. Expert Rev Clin Immunol 2014; 1:431-42. [DOI: 10.1586/1744666x.1.3.431] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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P2X7 Cell Death Receptor Activation and Mitochondrial Impairment in Oxaliplatin-Induced Apoptosis and Neuronal Injury: Cellular Mechanisms and In Vivo Approach. PLoS One 2013; 8:e66830. [PMID: 23826152 PMCID: PMC3695015 DOI: 10.1371/journal.pone.0066830] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2012] [Accepted: 05/10/2013] [Indexed: 12/25/2022] Open
Abstract
Limited information is available regarding the cellular mechanisms of oxaliplatin-induced painful neuropathy during exposure of patients to this drug. We therefore determined oxidative stress in cultured cells and evaluated its occurrence in C57BL/6 mice. Using both cultured neuroblastoma (SH-SY5Y) and macrophage (RAW 264.7) cell lines and also brain tissues of oxaliplatin-treated mice, we investigated whether oxaliplatin (OXA) induces oxidative stress and apoptosis. Cultured cells were treated with 2–200 µM OXA for 24 h. The effects of pharmacological inhibitors of oxidative stress or inflammation (N-acetyl cysteine, ibuprofen, acetaminophen) were also tested. Inhibitors were added 30 min before OXA treatment and then in combination with OXA for 24 h. In SH-SY5Y cells, OXA caused a significant dose-dependent decrease in viability, a large increase in ROS and NO production, lipid peroxidation and mitochondrial impairment as assessed by a drop in mitochondrial membrane potential, which are deleterious for the cell. An increase in levels of negatively charged phospholipids such as cardiolipin but also phosphatidylserine and phosphatidylinositol, was also observed. Additionally, OXA caused concentration-dependent P2X7 receptor activation, increased chromatin condensation and caspase-3 activation associated with TNF-α and IL-6 release. The majority of these toxic effects were equally observed in Raw 264.7 which also presented high levels of PGE2. Pretreatment of SH-SY5Y cells with pharmacological inhibitors significantly reduced or blocked all the neurotoxic OXA effects. In OXA-treated mice (28 mg/kg cumulated dose) significant cold hyperalgesia and oxidative stress in the tested brain areas were shown. Our study suggests that targeting P2X7 receptor activation and mitochondrial impairment might be a potential therapeutic strategy against OXA-induced neuropathic pain.
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Cui JH, Ju J, Yoon MH. Pharmacology of Cannabinoid Receptor Agonists and a Cyclooxygenase-2 Inhibitor in Rat Bone Tumor Pain. Pharmacology 2013; 92:150-7. [DOI: 10.1159/000354296] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Accepted: 07/11/2013] [Indexed: 11/19/2022]
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The effect of β-adrenergic blockade and COX-2 inhibition on healing of colon, muscle, and skin in rats undergoing colonic anastomosis. Int J Clin Pharmacol Ther 2011; 49:545-54. [PMID: 21888867 PMCID: PMC4350152 DOI: 10.5414/cp201550] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Abstract. Objective: COX inhibitors and b-adrenergic blockers were recently shown to reduce cancer progression in animal models through various mechanisms. These include the prevention of immune suppression during the critical perioperative period, and the preclusion of direct promoting effects of catecholamines and prostaglandins on malignant tissue growth. To assess the safety of such pharmacological treatments in the context of oncologic surgery, the current study evaluates wound healing efficacy in the skin, muscle, and colon tissues in rats undergoing colonic anastomosis. Methods: F344 rats were treated daily with a COX-2 inhibitor (etodolac), a b-adrenergic blocker (propranolol), both drugs or vehicles. All rats underwent skin punch biopsy, and half were also subjected to laparotomy and colonic anastomosis. Tensile strength of the abdominal wall and colonic bursting pressure were assessed on Days 3, 7, and 30 postoperatively, and skin biopsy site healing was scored on Days 2, 4, and 6 postoperatively. Results: None of the drug treatments produced any deleterious effects along the expected course of tissue healing. On Day 30, colon bursting pressure showed an abnormal strengthening in animals undergoing anastomosis compared to non-operated animals, across all drug treatments. This abnormal strengthening was attenuated by etodolac. In the skin, surgery reduced healing rate, irrespective of drug treatments. Conclusions: Effective doses of etodolac and propranolol caused no negative effects on wound healing processes in rats. The apparent safety of such treatments, together with their potential clinical benefits, suggests the incorporation of these treatments in oncologic patients undergoing curative tumor resection.
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Utvåg SE, Fuskevåg OM, Shegarfi H, Reikerås O. Short-Term Treatment with COX-2 Inhibitors Does Not Impair Fracture Healing. J INVEST SURG 2010; 23:257-61. [DOI: 10.3109/08941939.2010.481009] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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13
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Jones RL, Giembycz MA, Woodward DF. Prostanoid receptor antagonists: development strategies and therapeutic applications. Br J Pharmacol 2009; 158:104-45. [PMID: 19624532 PMCID: PMC2795261 DOI: 10.1111/j.1476-5381.2009.00317.x] [Citation(s) in RCA: 128] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2009] [Accepted: 04/07/2009] [Indexed: 01/17/2023] Open
Abstract
Identification of the primary products of cyclo-oxygenase (COX)/prostaglandin synthase(s), which occurred between 1958 and 1976, was followed by a classification system for prostanoid receptors (DP, EP(1), EP(2) ...) based mainly on the pharmacological actions of natural and synthetic agonists and a few antagonists. The design of potent selective antagonists was rapid for certain prostanoid receptors (EP(1), TP), slow for others (FP, IP) and has yet to be achieved in certain cases (EP(2)). While some antagonists are structurally related to the natural agonist, most recent compounds are 'non-prostanoid' (often acyl-sulphonamides) and have emerged from high-throughput screening of compound libraries, made possible by the development of (functional) assays involving single recombinant prostanoid receptors. Selective antagonists have been crucial to defining the roles of PGD(2) (acting on DP(1) and DP(2) receptors) and PGE(2) (on EP(1) and EP(4) receptors) in various inflammatory conditions; there are clear opportunities for therapeutic intervention. The vast endeavour on TP (thromboxane) antagonists is considered in relation to their limited pharmaceutical success in the cardiovascular area. Correspondingly, the clinical utility of IP (prostacyclin) antagonists is assessed in relation to the cloud hanging over the long-term safety of selective COX-2 inhibitors. Aspirin apart, COX inhibitors broadly suppress all prostanoid pathways, while high selectivity has been a major goal in receptor antagonist development; more targeted therapy may require an intermediate position with defined antagonist selectivity profiles. This review is intended to provide overviews of each antagonist class (including prostamide antagonists), covering major development strategies and current and potential clinical usage.
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Affiliation(s)
- R L Jones
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, Glasgow, UK.
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14
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Abstract
The sexual differentiation of reproductive physiology and behavior in the rodent brain is largely determined by estradiol aromatized from testicular androgens. The cellular mechanisms by which estradiol masculinizes the brain are beginning to emerge and revealing novel features of brain development that are highly region-specific. In the preoptic area, the major site controlling male sexual behavior, estradiol increases the level of the COX-2 enzyme and its product, prostaglandin E2 which promotes dendritic spine synaptogenesis. In the ventromedial nucleus of the hypothalamus, the major site controlling female reproductive behavior, estradiol promotes glutamate release from synaptic terminals, activating NMDA receptors and the MAP kinase pathway. In the arcuate nucleus, a major regulator of anterior pituitary function, estradiol increases GABA synthesis, altering the morphology of neighboring astrocytes and reducing formation of dendritic spines synapses. Glutamate, GABA and the importance of neuronal-astrocytic cross-talk are emerging as common aspects of masculinization. Advances are also being made in the mechanistic basis of female brain development, although the challenges are far greater.
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Affiliation(s)
- Jaclyn M Schwarz
- Department of Physiology and Program in Neuroscience, University of Maryland Baltimore, 655 W. Baltimore Street, Baltimore, MD 21230, USA
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Hall A, Bit RA, Brown SH, Chowdhury A, Giblin GM, Hurst DN, Kilford IR, Lewell X, Naylor A, Scoccitti T. Novel methylene-linked heterocyclic EP1 receptor antagonists. Bioorg Med Chem Lett 2008; 18:1592-7. [DOI: 10.1016/j.bmcl.2008.01.071] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2008] [Revised: 01/15/2008] [Accepted: 01/16/2008] [Indexed: 11/17/2022]
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16
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Abstract
Estradiol is the most potent and ubiquitous member of a class of steroid hormones called estrogens. Fetuses and newborns are exposed to estradiol derived from their mother, their own gonads, and synthesized locally in their brains. Receptors for estradiol are nuclear transcription factors that regulate gene expression but also have actions at the membrane, including activation of signal transduction pathways. The developing brain expresses high levels of receptors for estradiol. The actions of estradiol on developing brain are generally permanent and range from establishment of sex differences to pervasive trophic and neuroprotective effects. Cellular end points mediated by estradiol include the following: 1) apoptosis, with estradiol preventing it in some regions but promoting it in others; 2) synaptogenesis, again estradiol promotes in some regions and inhibits in others; and 3) morphometry of neurons and astrocytes. Estradiol also impacts cellular physiology by modulating calcium handling, immediate-early-gene expression, and kinase activity. The specific mechanisms of estradiol action permanently impacting the brain are regionally specific and often involve neuronal/glial cross-talk. The introduction of endocrine disrupting compounds into the environment that mimic or alter the actions of estradiol has generated considerable concern, and the developing brain is a particularly sensitive target. Prostaglandins, glutamate, GABA, granulin, and focal adhesion kinase are among the signaling molecules co-opted by estradiol to differentiate male from female brains, but much remains to be learned. Only by understanding completely the mechanisms and impact of estradiol action on the developing brain can we also understand when these processes go awry.
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Affiliation(s)
- Margaret M McCarthy
- Department of Physiology, University of Maryland Baltimore School of Medicine, Baltimore, Maryland 21201, USA.
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17
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Antoniou K, Malamas M, Drosos AA. Clinical pharmacology of celecoxib, a COX-2 selective inhibitor. Expert Opin Pharmacother 2007; 8:1719-32. [PMID: 17685888 DOI: 10.1517/14656566.8.11.1719] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
NSAIDs are extensively used worldwide; nonetheless, they are associated with adverse gastrointestinal (GI) effects. COX-2 inhibitors (coxibs) have been developed to reduce pain and inflammation without associated GI and bleeding risks. Celecoxib was the first COX-2 inhibitor introduced on the market, and it still remains so, whereas rofecoxib and valdecoxib were withdrawn due to excess cardiovascular (CV) risk. There is consequently a concern that CV toxicity reflects a class effect of all COX-2 inhibitors. Celecoxib possesses anti-inflammatory and analgesic properties, and the evidence for CV risk is rather small and comparable to that of other traditional NSAIDs in short-term treatments (of < 4 weeks). It could be suggested that the use of low doses of celecoxib (100 mg b.i.d.) in short-treatment, especially in patients with previous experience of GI events and the recommendation of avoiding use of celecoxib in patients with CV history or risk, contribute in the decision-making process of prescribing COX-2 or NSAIDs.
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Affiliation(s)
- Katerina Antoniou
- University of Ioannina, Department of Pharmacology, Medical school, Ioannina, Greece
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18
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Giblin GMP, Bit RA, Brown SH, Chaignot HM, Chowdhury A, Chessell IP, Clayton NM, Coleman T, Hall A, Hammond B, Hurst DN, Michel AD, Naylor A, Novelli R, Scoccitti T, Spalding D, Tang SP, Wilson AW, Wilson R. The discovery of 6-[2-(5-chloro-2-{[(2,4-difluorophenyl)methyl]oxy}phenyl)-1-cyclopenten-1-yl]-2-pyridinecarboxylic acid, GW848687X, a potent and selective prostaglandin EP1 receptor antagonist for the treatment of inflammatory pain. Bioorg Med Chem Lett 2007; 17:385-9. [PMID: 17084082 DOI: 10.1016/j.bmcl.2006.10.041] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2006] [Revised: 10/13/2006] [Accepted: 10/16/2006] [Indexed: 10/24/2022]
Abstract
The discovery of a series of selective EP1 receptor antagonists based on a 1,2-diarylcyclopentene template is described. After defining the structural requirements for EP1 potency and selectivity, heterocyclic rings were incorporated to reduce logD and improve in vitro pharmacokinetic properties. The 2,6-substituted pyridines and pyridazines gave an appropriate balance of potency, in vivo pharmacokinetic properties and a low potential for inhibiting a range of CYP450 enzymes. From this series, GW848687X was shown to have an excellent profile in models of inflammatory pain and was selected as a development candidate.
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Affiliation(s)
- Gerard M P Giblin
- Department of Medicinal Chemistry and DMPK, New Frontiers Science Park, Third Avenue, Harlow, Essex CM19 5AW, UK.
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19
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Aragona P, Di Pietro R. Is it safe to use topical NSAIDs for corneal sensitivity in Sjögren’s syndrome patients? Expert Opin Drug Saf 2006; 6:33-43. [PMID: 17181450 DOI: 10.1517/14740338.6.1.33] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Sjögren's syndrome dry eye is an inflammatory disease accompanied by an impairment of the autonomous nervous system of the ocular surface. The therapy for this condition is shifting from the mere tear replacement to a more complex approach including an anti-inflammatory treatment. Clinical trials have evidenced that the use of NSAIDs is followed by a reduction of the ocular discomfort symptoms in dry-eye patients. However, sporadic case reports of corneal melting in dry-eye subjects who underwent surgical procedures has brought attention to the possible effect that NSAIDs may have on corneal sensitivity. Therefore, the effect of NSAID treatment on corneal sensitivity in normal subjects and in patients with dry eye was studied. The results of these trials seem to demonstrate that some NSAIDs, diclofenac in particular, have the effect of reducing corneal sensitivity both in normal subjects and in patients with dry eye. Therefore, NSAIDs should be used with caution in Sjögren's syndrome patients.
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Affiliation(s)
- Pasquale Aragona
- University of Messina, Department of Surgical Specialties, Section of Ophthalmology, Ocular Surface Diseases Unit, Policlinico G. Martino, Via Consolare Valeria 1, I-98125 Messina, Italy.
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20
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Blikslager AT, Yin C, Cochran AM, Wooten JG, Pettigrew A, Belknap JK. Cyclooxygenase Expression in the Early Stages of Equine Laminitis: A Cytologic Study. J Vet Intern Med 2006. [DOI: 10.1111/j.1939-1676.2006.tb00721.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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21
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Hall A, Bit RA, Brown SH, Chaignot HM, Chessell IP, Coleman T, Giblin GMP, Hurst DN, Kilford IR, Lewell XQ, Michel AD, Mohamed S, Naylor A, Novelli R, Skinner L, Spalding DJ, Tang SP, Wilson RJ. Discovery of novel biaryl heterocyclic EP1 receptor antagonists. Bioorg Med Chem Lett 2006; 16:2666-71. [PMID: 16503138 DOI: 10.1016/j.bmcl.2006.02.014] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2006] [Revised: 02/08/2006] [Accepted: 02/09/2006] [Indexed: 11/17/2022]
Abstract
We describe the generation of novel EP(1) receptor antagonists by investigation of thiophene isosteres. In addition, we disclose preliminary in vitro and in vivo DMPK for selected compounds.
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Affiliation(s)
- Adrian Hall
- Neurology and Gastrointestinal Centre of Excellence for Drug Discovery, GlaxoSmithKline, New Frontiers Science Park, Third Avenue, Harlow, Essex CM19 5AW, UK.
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22
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de Hingh IHJT, van Goor H, de Man BM, Lomme RMLM, Bleichrodt RP, Hendriks T. Selective cyclo-oxygenase 2 inhibition affects ileal but not colonic anastomotic healing in the early postoperative period. Br J Surg 2006; 93:489-97. [PMID: 16521174 DOI: 10.1002/bjs.5288] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Selective cyclo-oxygenase 2 (COX-2) inhibitors are increasingly prescribed in the perioperative period. Recent recognition of a possible role for COX-2 in wound healing has raised concerns about the safety of their use in surgical practice. Therefore, the influence of celecoxib, a selective COX-2 inhibitor, on early anastomotic healing was investigated. METHODS Celecoxib, in doses of 15, 50 or 200 mg per kg per day, was given daily from the day before operation onwards to male Wistar rats that received both ileal and colonic anastomoses. Anastomotic strength was assessed by measuring the breaking strength and bursting pressure on the third day after operation. A second group received a dose of 50 mg per kg per day and a colonic anastomosis only, and healing was assessed on the third and fifth day after surgery. RESULTS Expression of COX-2 protein was upregulated in the anastomotic area. Administration of celecoxib, at all doses tested, resulted in a significantly higher ileal dehiscence rate than in control rats (P = 0.002). In contrast, colonic anastomoses healed normally within the same animals. The latter was confirmed in rats with colonic anastomoses only. CONCLUSION In this model, administration of the COX-2 inhibitor celecoxib affected ileal but not colonic anastomotic healing in the early postoperative period.
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Affiliation(s)
- I H J T de Hingh
- Department of Surgery, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, The Netherlands
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23
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Lionberger DR, Noble PC. Celecoxib does not affect osteointegration of cementless total hip stems. J Arthroplasty 2005; 20:115-22. [PMID: 16214012 DOI: 10.1016/j.arth.2005.05.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2005] [Accepted: 05/20/2005] [Indexed: 02/01/2023] Open
Abstract
Celecoxib's effect on prosthetic osteointegration in patients undergoing total hip arthroplasty was studied. In a prospective, placebo-controlled, double-blind study of 49 patients, 24 were randomized to celecoxib (200 mg/d) and 25 to placebo over 6 weeks. Bone markers, N-teleopeptide, and bone-specific alkaline phosphatase were obtained postoperatively, and at 6 and 12 weeks. No radiographic prosthetic subsidence occurred. There were no significant differences from baseline in periprosthetic bone mineral density between the celecoxib and placebo groups at 3 and 6 months. There were no significant differences in baseline BSAlkP values between the 2 groups. At 6 and 12 weeks, average BSAlkP values increased. Urinary NTx concentrations followed a skewed distribution. Normalized NTx concentrations were statistically significantly greater in the celecoxib group than the placebo group at 6 weeks but not at 12 weeks.
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Affiliation(s)
- David R Lionberger
- Orthopedic Surgery Department, Baylor College of Medicine, Houston, Texas 77030, USA
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24
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Abstract
Cyclooxygenase (COX)-2 inhibitors are as efficacious as nonselective nonsteroidal anti-inflammatory drugs for the treatment of postoperative pain but have the advantages of a better gastrointestinal side-effect profile as well as a lack of antiplatelet effects. There have been recent concerns regarding the cardiovascular side effects of COX-2 inhibitors. Nonetheless, they remain a valuable option for postoperative pain management. The pharmacology of these agents and available studies are reviewed.
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Affiliation(s)
- Noor M Gajraj
- Baylor Center for Pain Management, Baylor University Medical Center, 5575 Warren Parkway # 220, Frisco, TX 75034, USA.
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25
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Hantler C, Despotis GJ, Sinha R, Chelly JE. Guidelines and alternatives for neuraxial anesthesia and venous thromboembolism prophylaxis in major orthopedic surgery. J Arthroplasty 2004; 19:1004-16. [PMID: 15586337 DOI: 10.1016/j.arth.2004.04.018] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Neuraxial anesthesia during major orthopedic surgery, combined with venous thromboembolism prophylaxis, is generally safe and well tolerated, with potential benefits over general anesthesia. The risk of spinal/epidural hematoma, a rare but very serious complication, can be minimized by careful patient selection and attention to anesthetic technique. This risk is further reduced with the use of peripheral nerve blocks in place of neuraxial anesthesia.
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Affiliation(s)
- Charles Hantler
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri, USA
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