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Chaaban I, Hafez H, Hazzaa A, Domiati S, Abd El Galil KH, Hdeib F, Belal ASF, Ragab H. Experimental investigation and molecular simulations of quinone related compounds as COX/LOX inhibitors. Inflammopharmacology 2024:10.1007/s10787-024-01501-3. [PMID: 38858336 DOI: 10.1007/s10787-024-01501-3] [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: 12/08/2023] [Accepted: 05/29/2024] [Indexed: 06/12/2024]
Abstract
Quinone-containing compounds have risen as promising anti-inflammatory targets; however, very little research has been directed to investigate their potentials. Accordingly, the current study aimed to design and synthesize group of quinones bearing different substituents to investigate the effect of these functionalities on the anti-inflammatory activities of this important scaffold. The choice of these substituents was carefully done, varying from a directly attached heterocyclic ring to different aromatic moieties linked through a nitrogen spacer. Both in vitro and in vivo anti-inflammatory activities of the synthesized compounds were assessed relative to the positive standards: celecoxib and indomethacin. The in vitro enzymatic and transcription inhibitory actions of all the synthesized compounds were tested against cyclooxygenase-2 (COX-2), cyclooxygenase-1 (COX-1), and 5-lipoxygenase (LOX) and the in vivo gene expression of Interleukin-1, interleukin 10, and Tumor Necrosis Factor-α (TNF-α) were determined. The IC50 against COX-1 and COX-2 enzymes obtained by the immunoassay test revealed promising activities of sixteen compounds with selectivity indices higher than 100-fold COX-2 selectivity. Out of those, four compounds revealed selectivity indices comparable to celecoxib as a reference drug. Furthermore, all the tested compounds inhibited LOX with an IC50 in the range of 1.59-3.11 µM superior to that of the reference drug used; zileuton (IC50 = 3.50 µM). Consequently, these results highlight the promising LOX inhibitory activity of the tested compounds. The obtained in vivo paw edema results showed high inhibitory percentage for the compounds 9a, 9b, and 11a with the significant lower TNF-α relative mRNA expression for compounds 5a, 5d, 9a, 9b, 12d, and 12e. Finally, in silico docking of the most active compounds (5b, 5d, 9a, 9b) against COX2 enzymes presented an acceptable justification of the obtained in vitro inhibitory activities. As a conclusion, Compounds 5b, 5d, 9a, 9b, and 11b showed promising results and thus deserves further investigation.
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Affiliation(s)
- Ibrahim Chaaban
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
| | - Haidy Hafez
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
| | - Aly Hazzaa
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
| | - Souraya Domiati
- Department of Pharmacology and Therapeutics, Faculty of Pharmacy, Beirut Arab University, Tarik El Jadida, Riad El Solh, Beirut Campus, P.o box 11-5020, Beirut, 11072809, Lebanon.
| | - Khaled H Abd El Galil
- Department of Pharmaceutical Sciences, Faculty of Pharmacy, Beirut Arab University, Beirut, Lebanon
- Department of Microbiology and Immunology, Faculty of Pharmacy, Mansoura University, Alexandria, Egypt
| | - Fadi Hdeib
- Department of Biomedical Science, School of Pharmacy, Lebanese International University, Beirut, Lebanon
| | - Ahmed S F Belal
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
| | - Hanan Ragab
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Alexandria University, Alexandria, 21521, Egypt
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Olival A, Vieira SF, Gonçalves VMF, Cunha C, Tiritan ME, Carvalho A, Reis RL, Ferreira H, Neves NM. Erythrocyte-derived liposomes for the treatment of inflammatory diseases. J Drug Target 2022; 30:873-883. [PMID: 35414285 DOI: 10.1080/1061186x.2022.2066107] [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: 10/18/2022]
Abstract
Effective and safe therapies to counteract persistent inflammation are necessary. We developed erythrocyte-derived liposomes (EDLs) with intrinsic anti-inflammatory activity. The EDLs were prepared using lipids extracted from erythrocyte membranes, which are rich in omega-3 fatty acids with several health benefits. Diclofenac, a widely used anti-inflammatory drug, was incorporated into EDLs in relevant therapeutic concentrations. The EDLs were also functionalized with folic acid to allow their active targeting of M1 macrophages, which are key players in inflammatory processes. In the presence of lipopolysaccharide (LPS)-stimulated macrophages, empty EDLs and EDLs incorporating diclofenac were able to reduce the levels of important pro-inflammatory cytokines, namely interleukin-6 (IL-6; ≈85% and 77%, respectively) and tumor necrosis factor-alpha (TNF-α; ≈64% and 72%, respectively). Strikingly, cytocompatible concentrations of EDLs presented similar effects to dexamethasone, a potent anti-inflammatory drug, in reducing IL-6 and TNF-α concentrations, demonstrating the EDLs potential to be used as bioactive carriers in the treatment of inflammatory diseases.
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Affiliation(s)
- A Olival
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - S F Vieira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - V M F Gonçalves
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra, 1317, 4585-116 Gandra PRD, Paredes, Portugal
| | - C Cunha
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Life and Health Sciences Research Institute, School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - M E Tiritan
- CESPU, Instituto de Investigação e Formação Avançada em Ciências e Tecnologias da Saúde, Rua Central de Gandra, 1317, 4585-116 Gandra PRD, Paredes, Portugal.,Laboratório de Química Orgânica e Farmacêutica, Departamento de Ciências Químicas, Faculdade de Farmácia, Universidade do Porto, Rua Jorge Viterbo Ferreira, 228, 4050-313 Porto, Portugal.,Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR), Universidade do Porto, Rua dos Bragas 289, 4050-123 Porto, Portugal
| | - A Carvalho
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.,Life and Health Sciences Research Institute, School of Health Sciences, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - H Ferreira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - N M Neves
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, 4805-017 Barco, Guimarães, Portugal.,ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
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Xiao A, Wu C, Kuang L, Lu W, Zhao X, Kuang Z, Hao N. Effect of Zhongyi paste on inflammatory pain in mice by regulation of the extracellular regulated protein kinases 1/2-cyclooxygenase-2-prostaglandin E 2 pathway. Korean J Pain 2020; 33:335-343. [PMID: 32989198 PMCID: PMC7532292 DOI: 10.3344/kjp.2020.33.4.335] [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: 06/25/2020] [Revised: 08/19/2020] [Accepted: 08/19/2020] [Indexed: 12/01/2022] Open
Abstract
Background Zhongyi paste is a traditional Chinese medicine herbal paste that is externally applied to reduce inflammation and relieve pain. Methods An acute foot swelling inflammation model in C57BL/6J mice was established by carrageenan-induced pathogenesis. Zhongyi paste raised the pain threshold and also reduced the degree of swelling in mice with carrageenan-induced foot swelling. Results Analysis indicated that serum tumor necrosis factor-alpha, interleukin-1 beta, and prostaglandin E2 (PGE2) cytokine levels and PGE2 levels in the paw tissue of the mice were decreased by Zhongyi paste treatment. The quantitative polymerase chain reaction and western blot results showed that Zhongyi paste downregulated the mRNA and protein expression of extracellular signal-regulated kinase 1/2 (ERK1/2), and cyclooxygenase-2 (COX-2), and also downregulated the mRNA expression of PGE2. At the same time, the Zhongyi paste exerted a stronger effect as an external drug than that of indomethacin, which is an oral drug, and voltaren, which is an externally applied drug. Conclusions Our results indicated that Zhongyi paste is a very effective drug to reduce inflammatory swelling of the foot, and its mechanism of action is related to regulation of the ERK1/2–COX-2–PGE2 pathway.
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Affiliation(s)
- Ailan Xiao
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Chuncao Wu
- Office of Academic Research, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Lei Kuang
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Weizhong Lu
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Xin Zhao
- Chongqing Collaborative Innovation Center for Functional Food, Chongqing University of Education, Chongqing, China
| | - Zhiping Kuang
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
| | - Na Hao
- The First Department of Orthopaedic Surgery, Chongqing Traditional Chinese Medicine Hospital, Chongqing, China
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Zhang L, Haddouti EM, Welle K, Burger C, Wirtz DC, Schildberg FA, Kabir K. The Effects of Biomaterial Implant Wear Debris on Osteoblasts. Front Cell Dev Biol 2020; 8:352. [PMID: 32582688 PMCID: PMC7283386 DOI: 10.3389/fcell.2020.00352] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 04/21/2020] [Indexed: 12/14/2022] Open
Abstract
Aseptic loosening subsequent to periprosthetic osteolysis is the leading cause for the revision of arthroplasty failure. The biological response of macrophages to wear debris has been well established, however, the equilibrium of bone remodeling is not only dictated by osteoclastic bone resorption but also by osteoblast-mediated bone formation. Increasing evidence shows that wear debris significantly impair osteoblastic physiology and subsequent bone formation. In the present review, we update the current state of knowledge regarding the effect of biomaterial implant wear debris on osteoblasts. The interaction of osteoblasts with osteoclasts and macrophages under wear debris challenge, and potential treatment options targeting osteoblasts are also presented.
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Affiliation(s)
- Li Zhang
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
| | - El-Mustapha Haddouti
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
| | - Kristian Welle
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
| | - Christof Burger
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
| | - Dieter C Wirtz
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
| | - Frank A Schildberg
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
| | - Koroush Kabir
- Clinic for Orthopedics and Trauma Surgery, University Hospital Bonn, Bonn, Germany
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Local Biological Reactions and Pseudotumor-Like Tissue Formation in relation to Metal Wear in a Murine In Vivo Model. BIOMED RESEARCH INTERNATIONAL 2019; 2019:3649838. [PMID: 31781613 PMCID: PMC6855077 DOI: 10.1155/2019/3649838] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 05/18/2019] [Accepted: 09/17/2019] [Indexed: 12/12/2022]
Abstract
Metal wear debris and released ions (CoCrMo), which are widely generated in metal-on-metal bearings of hip implants, are also found in patients with metal-on-polyethylene bearings due to the mechanically assisted crevice corrosion of modular taper junctions, including head-neck and neck-stem taper interfaces. The resulting adverse reactions to metal debris and metal ions frequently lead to early arthroplasty revision surgery. National guidelines have since been published where the blood metal ion concentration of patients must consistently be monitored after joint replacement to prevent serious complications from developing after surgery. However, to date, the effect of metal particles and metal ions on local biological reactions is complex and still not understood in detail; the present study sought to elucidate the complex mechanism of metal wear-associated inflammation reactions. The knee joints in 4 groups each consisting of 10 female BALB/c mice received injections with cobalt chrome ions, cobalt chrome particles, and ultra-high-molecular-weight polyethylene (UHMWPE) particles or PBS (control). Seven days after injection, the synovial microcirculation and knee joint diameter were assessed via intravital fluorescence microscopy followed by histological evaluation of the synovial layer. Enlarged knee diameter, enhanced leukocyte to endothelial cell interactions, and an increase in functional capillary density within cobalt chrome particle-treated animals were significantly greater than those in the other treatment groups. Subsequently, pseudotumor-like tissue formations were observed only in the synovial tissue layer of the cobalt chrome particle-treated animals. Therefore, these findings strongly suggest that the cobalt chrome particles and not metal ions are the cause for in vivo postsurgery implantation inflammation.
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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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Vallés G, García-Cimbrelo E, Vilaboa N. Involvement of extracellular Hsp72 in wear particle-mediated osteolysis. Acta Biomater 2012; 8:1146-55. [PMID: 22198139 DOI: 10.1016/j.actbio.2011.12.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 12/02/2011] [Accepted: 12/05/2011] [Indexed: 02/07/2023]
Abstract
Wear particle-mediated osteolysis is one of the major problems affecting long-term survival of orthopaedic prostheses, frequently progressing to failure of fixation and revision surgery. Upon challenging with wear particles, macrophages and various other types of cells release soluble factors that stimulate the resorptive activity of osteoclasts and impair the function and activity of osteoblasts. Extracellular Hsp72 has been reported to activate macrophages and up-regulate pro-inflammatory cytokine production, although its role in osteolysis has not been established yet. The purpose of our study was to evaluate the involvement of this protein in the inflammatory response to wear particles that leads to periprosthetic osteolysis. To this end, we used interfacial tissues and blood samples from patients undergoing revision surgery due to aseptic loosening of cementless acetabular cups. Confocal microscopy indicated that Hsp72 co-localises with CD14(+) cells of interfacial tissues. Levels of Hsp72 in the culture media from periprosthetic membranes cultured ex vivo decreased along culture time and Hsp72 levels in sera from patients were lower and under the assay detection limit compared with those from age-matched control subjects. This suggests that interfacial tissues are not actively producing the protein but likely recruit it from peripheral circulation. Incubation of human macrophages with titanium (Ti) particles decreased the release of Hsp72 into culture media. Treatment with recombinant human Hsp72 enhanced considerably IL-6 levels in culture media which were not modified after macrophage co-stimulation with Ti particles, while pre-incubation with Hsp72 increased the Ti particle-induced TNF-α and IL-1β production. Altogether, these data indicate that extracellular Hsp72 amplifies the inflammatory response to wear debris by interacting with resident macrophages in periprosthetic tissues.
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Affiliation(s)
- Gema Vallés
- Unidad de Investigación, Hospital Universitario La Paz-IdiPAZ, Paseo de la Castellana 261, 28046 Madrid, Spain
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Guggulipid and Nimesulide Differentially Regulated Inflammatory Genes mRNA Expressions via Inhibition of NF-kB and CHOP Activation in LPS-Stimulated Rat Astrocytoma Cells, C6. Cell Mol Neurobiol 2011; 31:755-64. [DOI: 10.1007/s10571-011-9684-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2010] [Accepted: 02/21/2011] [Indexed: 10/18/2022]
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Zervantonakis IK, Kothapalli CR, Chung S, Sudo R, Kamm RD. Microfluidic devices for studying heterotypic cell-cell interactions and tissue specimen cultures under controlled microenvironments. BIOMICROFLUIDICS 2011; 5:13406. [PMID: 21522496 PMCID: PMC3082343 DOI: 10.1063/1.3553237] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2010] [Accepted: 01/11/2011] [Indexed: 05/04/2023]
Abstract
Microfluidic devices allow for precise control of the cellular and noncellular microenvironment at physiologically relevant length- and time-scales. These devices have been shown to mimic the complex in vivo microenvironment better than conventional in vitro assays, and allow real-time monitoring of homotypic or heterotypic cellular interactions. Microfluidic culture platforms enable new assay designs for culturing multiple different cell populations and∕or tissue specimens under controlled user-defined conditions. Applications include fundamental studies of cell population behaviors, high-throughput drug screening, and tissue engineering. In this review, we summarize recent developments in this field along with studies of heterotypic cell-cell interactions and tissue specimen culture in microfluidic devices from our own laboratory.
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Elkhouli AM. The efficacy of host response modulation therapy (omega-3 plus low-dose aspirin) as an adjunctive treatment of chronic periodontitis (clinical and biochemical study). J Periodontal Res 2011; 46:261-8. [PMID: 21261621 DOI: 10.1111/j.1600-0765.2010.01336.x] [Citation(s) in RCA: 69] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Regeneration of lost periodontal tissues is considered to be one of the most challenging aspects of periodontal therapy. Our current understanding of the role of the host immuno-inflammatory response in periodontal diseases forms the basis of new therapeutic approaches. The aim of this study was to evaluate the efficacy of systemic administration of omega-3 polyunsaturated fatty acids plus low-dose aspirin as an adjunctive treatment to regenerative therapy of furcation defects. MATERIAL AND METHODS Forty patients displaying at least a single grade II furcation defect were enrolled in the study. They were randomly allocated into two groups: an experimental group receiving decalcified freeze-dried bone allograft (DFDBA) + omega-3 polyunsaturated fatty acids combined with low-dose aspirin; and a control group receiving DFDBA + placebo. Clinical parameters were monitored at baseline, and at 3 and 6 mo following therapy, and included plaque index, gingival index, gingival bleeding index, probing pocket depth and clinical attachment level. The biochemical markers assessed in gingival crevicular fluid samples were interleukin-1β and interleukin-10. RESULTS The experimental intervention resulted in a greater mean probing pocket depth reduction (P < 0.001) and gain in clinical attachment (P < 0.05) compared with the control at 6 mo. Furthermore, the experimental protocol was able to achieve a significant modulatory effect on the levels of interleukin-1β and interleukin-10 compared with control therapy. CONCLUSION The findings suggest that the combination therapy demonstrated successful reduction of gingival inflammation, reduction of pocket depth and attachment level gain, accompanied by a trend for modulation of the cytokines profile in gingival crevicular fluid.
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Affiliation(s)
- A M Elkhouli
- Oral Medicine and Periodontology Department, Faculty of Dentistry, October 6 University, Cairo, Egypt.
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Hoenders CSM, Harmsen MC, van Luyn MJA. The local inflammatory environment and microorganisms in “aseptic” loosening of hip prostheses. J Biomed Mater Res B Appl Biomater 2008; 86:291-301. [DOI: 10.1002/jbm.b.30992] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Maxis K, Delalandre A, Martel-Pelletier J, Pelletier JP, Duval N, Lajeunesse D. The shunt from the cyclooxygenase to lipoxygenase pathway in human osteoarthritic subchondral osteoblasts is linked with a variable expression of the 5-lipoxygenase-activating protein. Arthritis Res Ther 2007; 8:R181. [PMID: 17156456 PMCID: PMC1794527 DOI: 10.1186/ar2092] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2006] [Revised: 11/24/2006] [Accepted: 12/08/2006] [Indexed: 12/11/2022] Open
Abstract
Osteoarthritis (OA) is characterized by articular cartilage degradation and hypertrophic bone changes with osteophyte formation and abnormal bone remodeling. Two groups of OA patients were identified via the production of variable and opposite levels of prostaglandin E2 (PGE2) or leukotriene B4 (LTB4) by subchondral osteoblasts, PGE2 levels discriminating between low and high subgroups. We studied whether the expression of 5-lipoxygenase (5-LO) or 5-LO-activating protein (FLAP) is responsible for the shunt from prostaglandins to leukotrienes. FLAP mRNA levels varied in low and high OA groups compared with normal, whereas mRNA levels of 5-LO were similar in all osteoblasts. Selective inhibition of cyclooxygenase-2 (COX-2) with NS-398-stimulated FLAP expression in the high OA osteoblasts subgroup, whereas it was without effect in the low OA osteoblasts subgroup. The addition of PGE2 to the low OA osteoblasts subgroup decreased FLAP expression but failed to affect it in the high OA osteoblasts subgroup. LTB4 levels in OA osteoblasts were stimulated about twofold by 1,25-dihydroxyvitamin D3 (1,25(OH)2D3) plus transforming growth factor-β (TGF-β), a situation corresponding to their effect on FLAP mRNA levels. Treatments with 1,25(OH)2D3 and TGF-β also modulated PGE2 production. TGF-β stimulated PGE2 production in both OA osteoblast groups, whereas 1,25(OH)2D3 alone had a limited effect but decreased the effect of TGF-β in the low OA osteoblasts subgroup. This modulation of PGE2 production was mirrored by the synthesis of COX-2. IL-18 levels were only slightly increased in a subgroup of OA osteoblasts compared with normal; however, no relationship was observed overall between IL-18 and PGE2 levels in normal and OA osteoblasts. These results suggest that the shunt from the production of PGE2 to LTB4 is through regulation of the expression of FLAP, not 5-LO, in OA osteoblasts. The expression of FLAP in OA osteoblasts is also modulated differently by 1,25(OH)2D3 and TGF-β depending on their endogenous low and high PGE2 levels.
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Affiliation(s)
- Kelitha Maxis
- Unité de recherche en Arthrose, Centre de recherche du Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame, 1560 rue Sherbrooke Est, Montréal, Québec, Canada, H2L 4M1
| | - Aline Delalandre
- Unité de recherche en Arthrose, Centre de recherche du Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame, 1560 rue Sherbrooke Est, Montréal, Québec, Canada, H2L 4M1
| | - Johanne Martel-Pelletier
- Unité de recherche en Arthrose, Centre de recherche du Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame, 1560 rue Sherbrooke Est, Montréal, Québec, Canada, H2L 4M1
| | - Jean-Pierre Pelletier
- Unité de recherche en Arthrose, Centre de recherche du Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame, 1560 rue Sherbrooke Est, Montréal, Québec, Canada, H2L 4M1
| | - Nicolas Duval
- Unité de recherche en Arthrose, Centre de recherche du Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame, 1560 rue Sherbrooke Est, Montréal, Québec, Canada, H2L 4M1
| | - Daniel Lajeunesse
- Unité de recherche en Arthrose, Centre de recherche du Centre Hospitalier de l'Université de Montréal, Hôpital Notre-Dame, 1560 rue Sherbrooke Est, Montréal, Québec, Canada, H2L 4M1
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Massicotte F, Fernandes JC, Martel-Pelletier J, Pelletier JP, Lajeunesse D. Modulation of insulin-like growth factor 1 levels in human osteoarthritic subchondral bone osteoblasts. Bone 2006; 38:333-41. [PMID: 16257278 DOI: 10.1016/j.bone.2005.09.007] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2005] [Revised: 08/18/2005] [Accepted: 09/02/2005] [Indexed: 11/21/2022]
Abstract
Human osteoarthritis (OA) is characterized by cartilage loss, bone sclerosis, osteophyte formation and inflammation of the synovial membrane. We previously reported that OA osteoblasts (Ob) show abnormal phenotypic characteristics possibly responsible for bone sclerosis and that two subgroups of OA patients can be identified by low or high endogenous production of prostaglandin E2 (PGE2) by OA Ob. Here, we determined that the elevated PGE2 levels in the high OA subgroup were linked with enhanced cyclooxygenase-2 (COX-2) protein levels compared to normal and low OA Ob. A linear relationship was observed between endogenous PGE2 levels and insulin-like growth factor 1 (IGF-1) levels in OA Ob. As parathyroid hormone (PTH) and PGE2 are known stimulators of IGF-1 production in Ob, we next evaluated their effect in OA Ob. Both subgroups increased their IGF-1 production similarly in response to PGE2, while the high OA subgroup showed a blunted response to PTH compared to the low OA group. Conversely, only the high OA group showed a significant inhibition of IGF-1 production when PGE2 synthesis was reduced with Naproxen, a non-steroidal antiinflammatory drug (NSAID) that inhibits cyclooxygenases (COX). The PGE2-dependent stimulation of IGF-1 synthesis was due in part to the cAMP/protein kinase A pathway since both the direct inhibition of this pathway with H-89 and the inhibition of EP2 or EP4 receptors, linked to cAMP production, reduced IGF-1 synthesis. The production of the most abundant IGF-1 binding proteins (IGFBPs) in bone tissue, IGFBP-3, -4, and -5, was lower in OA compared to normal Ob independently of the OA group. Under basal condition, OA Ob expressed similar IGF-1 mRNA to normal Ob; however, PGE2 stimulated IGF-1 mRNA expression more in OA than normal Ob. These data suggest that increased IGF-1 levels correlate with elevated endogenous PGE2 levels in OA Ob and that higher IGF-1 levels in OA Ob could be important for bone sclerosis in OA.
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Affiliation(s)
- Frédéric Massicotte
- Unité de recherche en arthrose, Centre de recherche du centre hospitalier de l'Université de Montréal, Hôpital Notre-Dame, Montréal, Québec, Canada H2L 4M1
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Wei CW, Cheng JY, Young TH. Elucidating in vitro cell-cell interaction using a microfluidic coculture system. Biomed Microdevices 2006; 8:65-71. [PMID: 16491333 DOI: 10.1007/s10544-006-6384-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This work presents a novel microfluidic coculture system that improves the accuracy of evaluating the interaction between cocultured cell types. A microfluidic coculture chip, fabricated by CO(2) laser direct-writing on polymethyl methacrylate (PMMA), was designed to separate two cell types using a microchannel, while permitting transfer of cellular media. The system has two up-stream wells and five down-stream wells. As an example, released inflammatory cytokines (e.g., interleukin-1 beta (IL-1 beta) and tumor necrosis factor-alpha (TNF-alpha)), activated in up-stream macrophages, flow through a microfluidic mixing system, generating linear concentration gradients in down-stream wells and inducing down-stream osteoblasts to release prostaglandin E2 (PGE2), a well-known bone resorption marker. Osteoblast viability was assessed by 3-[4, 5-dimethylthiazol-2-yl]-2, 5-diphenyltetrazolium bromide (MTT) assay. This novel coculture system can be applied to evaluate cell-cell interaction while physically separating interacting cells.
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Affiliation(s)
- Cheng-Wey Wei
- Research Center for Applied Sciences, Academia Sinica, Taiwan
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Fini M, Giavaresi G, Setti S, Martini L, Torricelli P, Giardino R. Current trends in the enhancement of biomaterial osteointegration: biophysical stimulation. Int J Artif Organs 2005; 27:681-90. [PMID: 15478539 DOI: 10.1177/039139880402700806] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
To enhance bone implant osteointegration, many strategies for improving biomaterial properties have been developed which include optimization of implant material, implant design, surface morphology and osteogenetic coatings. Other methods that have been attempted to enhance endogenous bone healing around biomaterials are different forms of biophysical stimulations such as pulsed electromagnetic fields (PEMFs) and low intensity pulsed ultrasounds (LIPUS), which were initially developed to accelerate fracture healing. To aid in the use of adjuvant biophysical therapies in the management of bone-implant osteointegration, the present authors reviewed experimental and clinical studies published in the literature over the last 20 years on the combined use of biomaterials and PEMFs or LIPUS, and summarized the methodology, and the possible mechanism of action and effectiveness of the different biophysical stimulations for the enhancement of bone healing processes around bone implanted biomaterials.
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Affiliation(s)
- M Fini
- Department of Experimental Surgery, Research Institute Codivilla-Putti, Rizzoli Orthopedic Institute, Bologna, Italy
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Abstract
We aimed to test the hypothesis that COX(cyclooxygenase)-2 inhibitors suppress periprosthetic osteolysis in a rabbit model. Porous coated titanium bar was inserted into distal femur of 24 skeletally mature New Zealand white rabbits. The rabbits were randomized into 3 groups. Group I (8 rabbits) was the control group. In Group II (8 rabbits), 5mg of ultrahigh molecular weight polyethylene particles was inserted along with prosthesis. In Group III (8 rabbits), the same procedure as in Group II was done and a COX-2 inhibitor (celecoxib, Pharmacia: 10mg/day) was administered for 7 weeks. Rabbits were sacrificed after 8 weeks of implantation. Gross, radiological, histological, and immunohistochemical assessments were done. Gross examination showed that one implant in Group II was loose. In radiological evaluation, focal osteolysis was found in 2 rabbits of Group II and 1 rabbit of Group III. Linear osteolysis was found in 2 rabbits of Group II and 1 rabbit of Group III. On histological examination, focal area of granulation tissue laden with macrophages was observed in 6 rabbits of Group II and 6 rabbits of Group III. The mean number of osteoclasts as demonstrated by tartarate positive acid phosphatase staining was 0.5+/-0.5 in Group I, 6.5+/-2.7 in Group II, 3.6+/-2.6 in Group III (p<0.05). Immunohistochemical staining for inducible nitric acid synthase and COX-2 did not show significant difference between Groups II and III. The overall results of this study suggest that COX-2 inhibitors in the therapeutic dose may have a place in suppressing the process of periprosthetic osteolysis.
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Affiliation(s)
- Gun-Il Im
- Department of Orthopaedics, Hallym University Hospital, 896 Pyongchon-Dong, Anyang 431-070, South Korea.
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