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Menéndez López-Mateos C, Menéndez López-Mateos ML, Aguilar-Salvatierra A, Gómez-Moreno G, Carreño JC, Khaldy H, Menéndez-Núñez M. Salivary Markers of Oxidative Stress in Patients Undergoing Orthodontic Treatment with Clear Aligners versus Self-Ligating Brackets: A Non-Randomized Clinical Trial. J Clin Med 2022; 11:jcm11123531. [PMID: 35743601 PMCID: PMC9225360 DOI: 10.3390/jcm11123531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/09/2022] [Accepted: 06/15/2022] [Indexed: 01/04/2023] Open
Abstract
The aim of this work was to determine advanced the oxidative protein products (AOPPs), total antioxidant capacity (TAC), and myeloperoxidase activity (MPO) in the saliva of patients undergoing orthodontic treatment with clear removable aligners in comparison with another group in treatment with fixed passive self-ligating brackets applying light forces, before treatment, after 30 days, and after 90 days of treatment. This non-randomized clinical trial recruited patients consecutively, all of which were over 18 years of age and due to undergo orthodontic treatment. They were divided into two groups according to treatment type: Group A, 48 patients treated with clear aligners (Invisalign®); and Group B, 19 patients treated with Damon System® 0.22″ self-ligating brackets applying light forces. Saliva samples were collected by a single clinician following the same protocol and underwent three analyses—AOPPs, TAC, and MPO levels–at baseline before placing the apparatus, after 30 days, and after 90 days treatment. Orthodontic treatment, whether with clear aligners or fixed self-ligating brackets and light forces, increased AOPPs after the first 30 days of treatment. During the initial phases of orthodontic treatment, neither clear aligners nor fixed self-ligating brackets applying light forces showed changes in TAC and MPO. Orthodontic treatment with both clear aligners and fixed apparatus self-ligating brackets applying light forces increases oxidative stress (AOPPs) after the first 30 days of treatment. There are no differences in AOPP levels between treatment with clear aligners and self-ligating brackets during the first 90 days of treatment. The antioxidative capacity of saliva during the initial phases of orthodontic treatment, whether with self-ligating brackets or clear aligners, does not undergo significant changes. With either orthodontic technique, the patients’ salivary antioxidant capacity is similar.
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Affiliation(s)
- Cristina Menéndez López-Mateos
- Department of Stomatology IV, Faculty of Odontology, Complutense University, Plaza de Ramón y Cajal s/n, 28040 Madrid, Spain;
| | - María Luisa Menéndez López-Mateos
- Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.L.M.L.-M.); (A.A.-S.); (G.G.-M.)
| | - Antonio Aguilar-Salvatierra
- Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.L.M.L.-M.); (A.A.-S.); (G.G.-M.)
| | - Gerardo Gómez-Moreno
- Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.L.M.L.-M.); (A.A.-S.); (G.G.-M.)
| | | | - Hoda Khaldy
- Scientific Instrumentation Center, University of Granada, Paseo Professor Juan Osorio s/n, 18071 Granada, Spain;
| | - Mario Menéndez-Núñez
- Faculty of Dentistry, University of Granada, Colegio Máximo de Cartuja s/n, 18071 Granada, Spain; (M.L.M.L.-M.); (A.A.-S.); (G.G.-M.)
- Correspondence:
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Csikós E, Csekő K, Kemény Á, Draskóczi L, Kereskai L, Kocsis B, Böszörményi A, Helyes Z, Horváth G. Pinus sylvestris L. and Syzygium aromaticum (L.) Merr. & L. M. Perry Essential Oils Inhibit Endotoxin-Induced Airway Hyperreactivity despite Aggravated Inflammatory Mechanisms in Mice. Molecules 2022; 27:molecules27123868. [PMID: 35744988 PMCID: PMC9229653 DOI: 10.3390/molecules27123868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 06/10/2022] [Accepted: 06/11/2022] [Indexed: 11/16/2022]
Abstract
Scots pine (SO) and clove (CO) essential oils (EOs) are commonly used by inhalation, and their main components are shown to reduce inflammatory mediator production. The aim of our research was to investigate the chemical composition of commercially available SO and CO by gas chromatography–mass spectrometry and study their effects on airway functions and inflammation in an acute pneumonitis mouse model. Inflammation was evoked by intratracheal endotoxin and EOs were inhaled three times during the 24 h experimental period. Respiratory function was analyzed by unrestrained whole-body plethysmography, lung inflammation by semiquantitative histopathological scoring, myeloperoxidase (MPO) activity and cytokine measurements. α-Pinene (39.4%) was the main component in SO, and eugenol (88.6%) in CO. Both SO and CO significantly reduced airway hyperresponsiveness, and prevented peak expiratory flow, tidal volume increases and perivascular edema formation. Meanwhile, inflammatory cell infiltration was not remarkably affected. In contrast, MPO activity and several inflammatory cytokines (IL-1β, KC, MCP-1, MIP-2, TNF-α) were aggravated by both EOs. This is the first evidence that SO and CO inhalation improve airway function, but enhance certain inflammatory parameters. These results suggest that these EOs should be used with caution in cases of inflammation-associated respiratory diseases.
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Affiliation(s)
- Eszter Csikós
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pecs, H-7624 Pecs, Hungary;
| | - Kata Csekő
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pecs, H-7624 Pecs, Hungary; (K.C.); (Á.K.); (L.D.); (Z.H.)
- Szentágothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
| | - Ágnes Kemény
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pecs, H-7624 Pecs, Hungary; (K.C.); (Á.K.); (L.D.); (Z.H.)
- Szentágothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
- Department of Medical Biology and Central Electron Microscope Laboratory, Medical School, University of Pecs, H-7624 Pecs, Hungary
| | - Lilla Draskóczi
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pecs, H-7624 Pecs, Hungary; (K.C.); (Á.K.); (L.D.); (Z.H.)
- Szentágothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
| | - László Kereskai
- Department of Pathology, Medical School, University of Pecs, H-7624 Pecs, Hungary;
| | - Béla Kocsis
- Department of Medical Microbiology and Immunology, Medical School, University of Pecs, H-7624 Pecs, Hungary;
| | - Andrea Böszörményi
- Institute of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, H-1085 Budapest, Hungary;
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pecs, H-7624 Pecs, Hungary; (K.C.); (Á.K.); (L.D.); (Z.H.)
- Szentágothai Research Centre, University of Pecs, H-7624 Pecs, Hungary
- PharmInVivo Ltd., H-7629 Pecs, Hungary
| | - Györgyi Horváth
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pecs, H-7624 Pecs, Hungary;
- Correspondence: ; Tel.: +36-72-503650-28823
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Franck T, Ceusters J, Graide H, Mouithys-Mickalad A, Serteyn D. Muscle Derived Mesenchymal Stem Cells Inhibit the Activity of the Free and the Neutrophil Extracellular Trap (NET)-Bond Myeloperoxidase. Cells 2021; 10:cells10123486. [PMID: 34943996 PMCID: PMC8700239 DOI: 10.3390/cells10123486] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/21/2021] [Accepted: 12/07/2021] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are known to migrate to tissue injury sites to participate in immune modulation, tissue remodelling and wound healing, reducing tissue damage. Upon neutrophil activation, there is a release of myeloperoxidase (MPO), an oxidant enzyme. But little is known about the direct role of MSCs on MPO activity. The aim of this study was to investigate the effect of equine mesenchymal stem cells derived from muscle microinvasive biopsy (mdMSC) on the oxidant response of neutrophils and particularly on the activity of the myeloperoxidase released by stimulated equine neutrophils. After specific treatment (trypsin and washings in phosphate buffer saline), the mdMSCs were exposed to isolated neutrophils. The effect of the suspended mdMSCs was studied on the ROS production and the release of total and active MPO by stimulated neutrophils and specifically on the activity of MPO in a neutrophil-free model. Additionally, we developed a model combining adherent mdMSCs with neutrophils to study total and active MPO from the neutrophil extracellular trap (NET). Our results show that mdMSCs inhibited the ROS production, the activity of MPO released by stimulated neutrophils and the activity of MPO bound to the NET. Moreover, the co-incubation of mdMSCs directly with MPO results in a strong inhibition of the peroxidase activity of MPO, probably by affecting the active site of the enzyme. We confirm the strong potential of mdMSCs to lower the oxidant response of neutrophils. The novelty of our study is an evident inhibition of the activity of MPO by MSCs. The results indicated a new potential therapeutic approach of mdMSCs in the inhibition of MPO, which is considered as a pro-oxidant actor in numerous chronic and acute inflammatory pathologies.
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Affiliation(s)
- Thierry Franck
- Centre of Oxygen Research and Development (CORD), University of Liege, 4000 Liege, Belgium; (J.C.); (H.G.); (A.M.-M.); (D.S.)
- Research Unit FARAH, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liege, 4000 Liege, Belgium
- Correspondence:
| | - Justine Ceusters
- Centre of Oxygen Research and Development (CORD), University of Liege, 4000 Liege, Belgium; (J.C.); (H.G.); (A.M.-M.); (D.S.)
- Research Unit FARAH, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liege, 4000 Liege, Belgium
| | - Hélène Graide
- Centre of Oxygen Research and Development (CORD), University of Liege, 4000 Liege, Belgium; (J.C.); (H.G.); (A.M.-M.); (D.S.)
| | - Ange Mouithys-Mickalad
- Centre of Oxygen Research and Development (CORD), University of Liege, 4000 Liege, Belgium; (J.C.); (H.G.); (A.M.-M.); (D.S.)
| | - Didier Serteyn
- Centre of Oxygen Research and Development (CORD), University of Liege, 4000 Liege, Belgium; (J.C.); (H.G.); (A.M.-M.); (D.S.)
- Research Unit FARAH, Department of Clinical Sciences, Faculty of Veterinary Medicine, University of Liege, 4000 Liege, Belgium
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Csikós E, Csekő K, Ashraf AR, Kemény Á, Kereskai L, Kocsis B, Böszörményi A, Helyes Z, Horváth G. Effects of Thymus vulgaris L., Cinnamomum verum J.Presl and Cymbopogon nardus (L.) Rendle Essential Oils in the Endotoxin-induced Acute Airway Inflammation Mouse Model. Molecules 2020; 25:molecules25153553. [PMID: 32759721 PMCID: PMC7436258 DOI: 10.3390/molecules25153553] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 01/02/2023] Open
Abstract
Thyme (TO), cinnamon (CO), and Ceylon type lemongrass (LO) essential oils (EOs) are commonly used for inhalation. However, their effects and mechanisms on inflammatory processes are not well-documented, and the number of in vivo data that would be important to determine their potential benefits or risks is low. Therefore, we analyzed the chemical composition and investigated the activity of TO, CO, and LO on airway functions and inflammatory parameters in an acute pneumonitis mouse model. The components of commercially available EOs were measured by gas chromatography-mass spectrometry. Airway inflammation was induced by intratracheal endotoxin administration in mice. EOs were inhaled during the experiments. Airway function and hyperresponsiveness were determined by unrestrained whole-body plethysmography on conscious animals. Myeloperoxidase (MPO) activity was measured by spectrophotometry from lung tissue homogenates, from which semiquantitative histopathological scores were assessed. The main components of TO, CO, and LO were thymol, cinnamaldehyde, and citronellal, respectively. We provide here the first evidence that TO and CO reduce inflammatory airway hyperresponsiveness and certain cellular inflammatory parameters, so they can potentially be considered as adjuvant treatments in respiratory inflammatory conditions. In contrast, Ceylon type LO inhalation might have an irritant effect (e.g., increased airway hyperresponsiveness and MPO activity) on the inflamed airways, and therefore should be avoided.
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Affiliation(s)
- Eszter Csikós
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (A.R.A.)
| | - Kata Csekő
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, H-7624 Pécs, Hungary; (K.C.); (Á.K.); (Z.H.)
- Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
| | - Amir Reza Ashraf
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (A.R.A.)
| | - Ágnes Kemény
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, H-7624 Pécs, Hungary; (K.C.); (Á.K.); (Z.H.)
- Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- Department of Medical Biology and Central Electron Microscope Laboratory, Medical School, University of Pécs, H-7624 Pécs, Hungary
| | - László Kereskai
- Department of Pathology, Medical School, University of Pécs, H-7624 Pécs, Hungary;
| | - Béla Kocsis
- Department of Medical Microbiology and Immunology, Medical School, University of Pécs, H-7624 Pécs, Hungary;
| | - Andrea Böszörményi
- Department of Pharmacognosy, Faculty of Pharmacy, Semmelweis University, H-1085 Budapest, Hungary;
| | - Zsuzsanna Helyes
- Department of Pharmacology and Pharmacotherapy, Medical School, University of Pécs, H-7624 Pécs, Hungary; (K.C.); (Á.K.); (Z.H.)
- Szentágothai Research Centre, University of Pécs, H-7624 Pécs, Hungary
- PharmInVivo Ltd., H-7629 Pécs, Hungary
| | - Györgyi Horváth
- Department of Pharmacognosy, Faculty of Pharmacy, University of Pécs, H-7624 Pécs, Hungary; (E.C.); (A.R.A.)
- Correspondence: ; Tel.: +36-72-503650-28823
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Calassara LL, Pinto SC, Condack CPM, Leite BF, Nery LCDES, Tinoco LW, Aguiar FA, Leal ICR, Martins SM, Silva LLD, Raimundo JM, Muzitano MF. Isolation and characterization of flavonoids from Tapirira guianensis leaves with vasodilatory and myeloperoxidase-inhibitory activities. Nat Prod Res 2020; 35:5480-5483. [PMID: 32586127 DOI: 10.1080/14786419.2020.1784170] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The aim of this study was to perform the isolation and characterization of vasodilatory flavonoids from Tapirira guianensis Aubl. (Annacardiaceae) leaves. In this context, ethyl acetate fraction (EA fraction) was obtained and subjected to fractionation batches by HSCCC affording: myricetin 3-O-α-L-rhamnopyranoside (myricitrin, 1); quercetin 3-O-(6"-O-galloyl)-β-D-galactopyranoside (2); quercetin 3-O-α-L-arabinofuranoside (avicularin, 3); and quercetin 3-O-α-L-rhamnopyranoside (quercitrin, 4). Myricitrin (1) induced a relaxation of 56.07 ± 13.04% at 300 μM (P < 0.05; n = 5), indicating that this flavonoid contributes to the vasodilatory activity of EA fraction. In addition, all EA fraction flavonoids were evaluated for their capacity of inhibiting myeloperoxidase activity and flavonoid (2) (IC50 1.0 ± 0.3 µM) was the strongest peroxidase inhibitor. In conclusion, it was possible to verify that myricitrin together with quercetin are mainly responsible for vasodilatory potential, besides flavonoid 2 for myeloperoxidase inhibition. Together these flavonoids seem to be responsible for Tapirira guianensis cardiovascular effects.
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Affiliation(s)
- Laura L Calassara
- Laboratório de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Shaft C Pinto
- Laboratório de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Cecília P M Condack
- Grupo de Pesquisa em Farmacologia de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Beatriz F Leite
- Grupo de Pesquisa em Farmacologia de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Ludmilla C do E S Nery
- Grupo de Pesquisa em Farmacologia de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Luzineide W Tinoco
- Instituto de Pesquisa de Produtos Naturais Walter Mors, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, RJ, Brazil
| | - Fernando A Aguiar
- Laboratório de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil.,Departamento de Física e Química, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Núcleo de Pesquisa em Produtos Naturais e Sintéticos, Universidade de São Paulo, Ribeirão Preto, SP, Brazil
| | - Ivana C R Leal
- Laboratório de Produtos Naturais e Ensaios Biológicos, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Centro de Ciências da Saúde, Rio de Janeiro, RJ, Brazil
| | - Samantha M Martins
- Laboratório de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Leandro L da Silva
- Grupo de Pesquisa em Farmacologia de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Juliana M Raimundo
- Grupo de Pesquisa em Farmacologia de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
| | - Michelle F Muzitano
- Laboratório de Produtos Bioativos, Universidade Federal do Rio de Janeiro, Campus Macaé, Macaé, RJ, Brazil
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Quidim AV, Bruno TC, Lacerda Leocádio PC, Dos Reis Menta PL, Alvarez-Leite JI, Santos IS, Lotufo PA, Benseñor IM, Goulart AC. Myeloperoxidase activity and acute coronary syndrome survival: long-term evaluation in the ERICO study. Biomark Med 2018; 12:1219-1229. [PMID: 30456985 DOI: 10.2217/bmm-2018-0110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM We aimed to analyze the influence of myeloperoxidase (MPO) activity on mortality in the Acute Coronary Syndrome Registry Strategy (ERICO) study. METHODS MPO activity levels were evaluated in 342 patients. We performed survival analyses using Kaplan-Meier curves and Cox regression with respective hazard ratios, 95% CI, according to MPO tertiles distribution up to 7 years of follow-up. RESULTS Higher MPO activity levels were seen in men, smokers, diabetics and those who were taking aspirin. MPO activity levels were neither significant in relation to mortality nor to survival rates up to seven years. CONCLUSION We found no relationship between elevated levels of MPO activity post-acute coronary syndrome and mortality up to 7-years of follow-up in the ERICO study.
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Affiliation(s)
- Alessandra Vl Quidim
- Center for Clinical & Epidemiological Research, Internal Medicine Department, Hospital Universitário, Universidade de Sao Paulo, Brazil
| | - Tatiana C Bruno
- Center for Clinical & Epidemiological Research, Internal Medicine Department, Hospital Universitário, Universidade de Sao Paulo, Brazil
| | | | | | | | - Itamar S Santos
- Center for Clinical & Epidemiological Research, Internal Medicine Department, Hospital Universitário, Universidade de Sao Paulo, Brazil.,Internal Medicine Department, School of Medicine, Universidade de Sao Paulo, Brazil
| | - Paulo A Lotufo
- Center for Clinical & Epidemiological Research, Internal Medicine Department, Hospital Universitário, Universidade de Sao Paulo, Brazil.,Internal Medicine Department, School of Medicine, Universidade de Sao Paulo, Brazil
| | - Isabela M Benseñor
- Center for Clinical & Epidemiological Research, Internal Medicine Department, Hospital Universitário, Universidade de Sao Paulo, Brazil.,Internal Medicine Department, School of Medicine, Universidade de Sao Paulo, Brazil
| | - Alessandra C Goulart
- Center for Clinical & Epidemiological Research, Internal Medicine Department, Hospital Universitário, Universidade de Sao Paulo, Brazil
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Piekielna-Ciesielska J, Mollica A, Pieretti S, Fichna J, Szymaszkiewicz A, Zielińska M, Kordek R, Janecka A. Antinociceptive potency of a fluorinated cyclopeptide Dmt-c[D-Lys-Phe-p-CF 3-Phe-Asp]NH 2. J Enzyme Inhib Med Chem 2018. [PMID: 29513114 PMCID: PMC6010070 DOI: 10.1080/14756366.2018.1441839] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Opioid peptides and opiate drugs such as morphine, mediate their analgesic effects, but also undesired side effects, mostly through activation of the mu opioid receptor. However, delta- and kappa-opioid receptors can also contribute to the analgesic effects of opioids. Recent findings showed that simultaneous activation of multiple opioid receptors may result in additional analgesia with fewer side effects. Here, we evaluated the pharmacological profile of our formerly developed mixed mu/kappa-opioid receptor ligands, Dmt-c[D-Lys-Phe-Phe-Asp]NH2 (C-36) and Dmt-c[D-Lys-Phe-p-CF3-Phe-Asp]NH2 (F-81). The ability of these peptides to cross the blood–brain barrier was tested in the parallel artificial membrane permeability (PAMPA) assay. On the basis of the hot-plate test in mice after central and peripheral administration, analog F-81 was selected for the anti-nociceptive and anti-inflammatory activity assessment after peripheral administration.
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Affiliation(s)
| | - Adriano Mollica
- b Department of Pharmacy , University "'G. d'Annunzio"' of Chieti-Pescara , Chieti , Italy
| | - Stefano Pieretti
- c Istituto Superiore di Sanità , National Center for Drug Research and Evaluation , Rome , Italy
| | - Jakub Fichna
- d Department of Biochemistry, Faculty of Medicine , Medical University of Lodz , Poland
| | - Agata Szymaszkiewicz
- d Department of Biochemistry, Faculty of Medicine , Medical University of Lodz , Poland
| | - Marta Zielińska
- d Department of Biochemistry, Faculty of Medicine , Medical University of Lodz , Poland
| | - Radzisław Kordek
- e Department of Pathology, Faculty of Medicine , Medical University of Lodz , Lodz , Poland
| | - Anna Janecka
- a Department of Biomolecular Chemistry, Faculty of Medicine , Medical University of Lodz , Lodz , Poland
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Rodriguez-Palacios A, Harding A, Menghini P, Himmelman C, Retuerto M, Nickerson KP, Lam M, Croniger CM, McLean MH, Durum SK, Pizarro TT, Ghannoum MA, Ilic S, McDonald C, Cominelli F. The Artificial Sweetener Splenda Promotes Gut Proteobacteria, Dysbiosis, and Myeloperoxidase Reactivity in Crohn's Disease-Like Ileitis. Inflamm Bowel Dis 2018; 24:1005-1020. [PMID: 29554272 PMCID: PMC5950546 DOI: 10.1093/ibd/izy060] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Indexed: 12/16/2022]
Abstract
Background Epidemiological studies indicate that the use of artificial sweeteners doubles the risk for Crohn's disease (CD). Herein, we experimentally quantified the impact of 6-week supplementation with a commercial sweetener (Splenda; ingredients sucralose maltodextrin, 1:99, w/w) on both the severity of CD-like ileitis and the intestinal microbiome alterations using SAMP1/YitFc (SAMP) mice. Methods Metagenomic shotgun DNA sequencing was first used to characterize the microbiome of ileitis-prone SAMP mice. Then, 16S rRNA microbiome sequencing, quantitative polymerase chain reaction, fluorescent in situ hybridization (FISH), bacterial culture, stereomicroscopy, histology, and myeloperoxidase (MPO) activity analyses were then implemented to compare the microbiome and ileitis phenotype in SAMP with that of control ileitis-free AKR/J mice after Splenda supplementation. Results Metagenomics indicated that SAMP mice have a gut microbial phenotype rich in Bacteroidetes, and experiments showed that Helicobacteraceae did not have an exacerbating effect on ileitis. Splenda did not increase the severity of (stereomicroscopic/histological) ileitis; however, biochemically, ileal MPO activity was increased in SAMP treated with Splenda compared with nonsupplemented mice (P < 0.022) and healthy AKR mice. Splenda promoted dysbiosis with expansion of Proteobacteria in all mice, and E. coli overgrowth with increased bacterial infiltration into the ileal lamina propria of SAMP mice. FISH showed increase malX gene-carrying bacterial clusters in the ilea of supplemented SAMP (but not AKR) mice. Conclusions Splenda promoted gut Proteobacteria, dysbiosis, and biochemical MPO reactivity in a spontaneous model of (Bacteroidetes-rich) ileal CD. Our results indicate that although Splenda may promote parallel microbiome alterations in CD-prone and healthy hosts, this did not result in elevated MPO levels in healthy mice, only CD-prone mice. The consumption of sucralose/maltodextrin-containing foods might exacerbate MPO intestinal reactivity only in individuals with a pro-inflammatory predisposition, such as CD.
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Affiliation(s)
| | - Andrew Harding
- Division of Gastroenterology and Liver Disease, Department of Medicine, School of Medicine, Cleveland, Ohio
| | - Paola Menghini
- Division of Gastroenterology and Liver Disease, Department of Medicine, School of Medicine, Cleveland, Ohio
| | - Catherine Himmelman
- Division of Gastroenterology and Liver Disease, Department of Medicine, School of Medicine, Cleveland, Ohio
| | - Mauricio Retuerto
- Center for Medical Mycology, Department of Dermatology, School of Medicine, Cleveland, Ohio
| | - Kourtney P Nickerson
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Minh Lam
- Division of Gastroenterology and Liver Disease, Department of Medicine, School of Medicine, Cleveland, Ohio
| | | | - Mairi H McLean
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland
- School of Medicine, Medical Sciences and Nutrition, University of Aberdeen, Scotland, UK
| | - Scott K Durum
- Cancer and Inflammation Program, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, Maryland
| | - Theresa T Pizarro
- Department of Pathology, Case Western Reserve University, School of Medicine, Cleveland, Ohio
| | - Mahmoud A Ghannoum
- Center for Medical Mycology, Department of Dermatology, School of Medicine, Cleveland, Ohio
| | - Sanja Ilic
- Department of Human Sciences and Human Nutrition, The Ohio State University, Columbus, Ohio
| | - Christine McDonald
- Department of Molecular Medicine, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio
| | - Fabio Cominelli
- Division of Gastroenterology and Liver Disease, Department of Medicine, School of Medicine, Cleveland, Ohio
- Digestive Health Institute, University Hospitals Cleveland Medical Center, Cleveland, Ohio
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9
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Helyes Z, Kemény Á, Csekő K, Szőke É, Elekes K, Mester M, Sándor K, Perkecz A, Kereskai L, Márk L, Bona Á, Benkő A, Pintér E, Szolcsányi J, Ledent C, Sperlágh B, Molnár TF. Marijuana smoke induces severe pulmonary hyperresponsiveness, inflammation, and emphysema in a predictive mouse model not via CB1 receptor activation. Am J Physiol Lung Cell Mol Physiol 2017; 313:L267-L277. [PMID: 28495855 DOI: 10.1152/ajplung.00354.2016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Revised: 05/01/2017] [Accepted: 05/01/2017] [Indexed: 01/28/2023] Open
Abstract
Sporadic clinical reports suggested that marijuana smoking induces spontaneous pneumothorax, but no animal models were available to validate these observations and to study the underlying mechanisms. Therefore, we performed a systematic study in CD1 mice as a predictive animal model and assessed the pathophysiological alterations in response to 4-mo-long whole body marijuana smoke with integrative methodologies in comparison with tobacco smoke. Bronchial responsiveness was measured with unrestrained whole body plethysmography, cell profile in the bronchoalveolar lavage fluid with flow cytometry, myeloperoxidase activity with spectrophotometry, inflammatory cytokines with ELISA, and histopathological alterations with light microscopy. Daily marijuana inhalation evoked severe bronchial hyperreactivity after a week. Characteristic perivascular/peribronchial edema, atelectasis, apical emphysema, and neutrophil and macrophage infiltration developed after 1 mo of marijuana smoking; lymphocyte accumulation after 2 mo; macrophage-like giant cells, irregular or destroyed bronchial mucosa, goblet cell hyperplasia after 3 mo; and severe atelectasis, emphysema, obstructed or damaged bronchioles, and endothelial proliferation at 4 mo. Myeloperoxidase activity, inflammatory cell, and cytokine profile correlated with these changes. Airway hyperresponsiveness and inflammation were not altered in mice lacking the CB1 cannabinoid receptor. In comparison, tobacco smoke induced hyperresponsiveness after 2 mo and significantly later caused inflammatory cell infiltration/activation with only mild emphysema. We provide the first systematic and comparative experimental evidence that marijuana causes severe airway hyperresponsiveness, inflammation, tissue destruction, and emphysema, which are not mediated by the CB1 receptor.
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Affiliation(s)
- Z Helyes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
- János Szentágothai Research Center, University of Pécs, Pécs, Hungary
- University of Pécs-Hungarian Brain Research Program B Chronic Pain Research Group, University of Pécs, Pécs, Hungary
| | - Á Kemény
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
- János Szentágothai Research Center, University of Pécs, Pécs, Hungary
- Department of Medical Biology, University of Pécs, Pécs, Hungary
| | - K Csekő
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
- University of Pécs-Hungarian Brain Research Program B Chronic Pain Research Group, University of Pécs, Pécs, Hungary
| | - É Szőke
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary;
- János Szentágothai Research Center, University of Pécs, Pécs, Hungary
- University of Pécs-Hungarian Brain Research Program B Chronic Pain Research Group, University of Pécs, Pécs, Hungary
| | - K Elekes
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
| | - M Mester
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
| | - K Sándor
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
| | - A Perkecz
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
| | - L Kereskai
- Department of Pathology, University of Pécs, Pécs, Hungary
| | - L Márk
- Department of Medical Chemistry and Biochemistry; University of Pécs, Pécs, Hungary
| | - Á Bona
- Department of Medical Chemistry and Biochemistry; University of Pécs, Pécs, Hungary
| | - A Benkő
- Department of Medical Chemistry and Biochemistry; University of Pécs, Pécs, Hungary
| | - E Pintér
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
- János Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - J Szolcsányi
- Department of Pharmacology and Pharmacotherapy, University of Pécs, Pécs, Hungary
- János Szentágothai Research Center, University of Pécs, Pécs, Hungary
| | - C Ledent
- Institute of Interdisciplinary research in human and molecular biology, Université Libre de Bruxelles, Brussels, Belgium
| | - B Sperlágh
- Laboratory of Molecular Pharmacology, Institute of Experimental Medicine, Hungarian Academy of Sciences, Budapest, Hungary
| | - T F Molnár
- Department of Operational Medicine, Faculty of Medicine, University of Pécs, Pécs, Hungary
- Department of Surgery, Thoracic Surgery Unit, Petz Aladár County Hospital Györ, Györ, Hungary; and
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10
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Özyurt H, Özden AS, Çevik Ö, Özgen Z, Cadirci S, Elmas MA, Ercan F, Şener G, Gören MZ. Investigation into the role of the cholinergic system in radiation-induced damage in the rat liver and ileum. J Radiat Res 2014; 55:866-75. [PMID: 24914105 PMCID: PMC4202297 DOI: 10.1093/jrr/rru039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
It has been previously shown that acetylcholine (ACh) may affect pro-inflammatory and anti-inflammatory cytokines. The role of the cholinergic system in radiation-induced inflammatory responses and tissue damage remains unclear. Therefore, the present study was designed to determine the radio-protective properties of the cholinergic system in the ileum and the liver of rats. Rats were exposed to 8-Gy single-fraction whole-abdominal irradiation and were then decapitated at either 36 h or 10 d post-irradiation. The rats were treated either with intraperitoneal physiological saline (1 ml/kg), physostigmine (80 µg/kg) or atropine (50 μg/kg) twice daily for 36 h or 10 d. Cardiac blood samples and liver and ileal tissues were obtained in which TNF-α, IL-1β and IL-10 levels were assayed using ELISA. In the liver and ileal homogenates, caspase-3 immunoblots were performed and myeloperoxidase (MPO) activity was analyzed. Plasma levels of IL-1β and TNF-α increased significantly following radiation (P < 0.01 and P < 0.001, respectively) as compared with non-irradiated controls, and physostigmine treatment prevented the increase in the pro-inflammatory cytokines (P < 0.01 and P < 0.001, respectively). Plasma IL-10 levels were not found to be significantly changed following radiation, whereas physostigmine augmented IL-10 levels during the late phase (P < 0.01). In the liver and ileum homogenates, IL-1β and TNF-α levels were also elevated following radiation, and this effect was inhibited by physostigmine treatment but not by atropine. Similarly, physostigmine also reversed the changes in MPO activity and in the caspase-3 levels in the liver and ileum. Histological examination revealed related changes. Physostigmine experiments suggested that ACh has a radio-protective effect not involving the muscarinic receptors.
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Affiliation(s)
- Hazan Özyurt
- Dr Lutfi Kirdar Kartal Training and Research Hospital, Radiation Oncology, 34865 Istanbul, Turkey
| | - A Sevgi Özden
- Dr Lutfi Kirdar Kartal Training and Research Hospital, Radiation Oncology, 34865 Istanbul, Turkey
| | - Özge Çevik
- Cumhuriyet University School of Pharmacy, Department of Biochemistry, 58140 Sivas, Turkey
| | - Zerrin Özgen
- Marmara University Pendik Training and Research Hospital, Radiation Oncology, Üst Kaynarca, Istanbul, Turkey
| | - Selin Cadirci
- Marmara University School of Pharmacy, Pharmacology, 34668 Istanbul, Turkey
| | - Merve Açıkel Elmas
- Marmara University School of Medicine, Department of Histology and Embryology, Başıbüyük Health Campus, Basic Medical Sciences Building, Başıbüyük, Maltepe, 34854 Istanbul, Turkey
| | - Feriha Ercan
- Marmara University School of Medicine, Department of Histology and Embryology, Başıbüyük Health Campus, Basic Medical Sciences Building, Başıbüyük, Maltepe, 34854 Istanbul, Turkey
| | - Göksel Şener
- Marmara University School of Pharmacy, Pharmacology, 34668 Istanbul, Turkey
| | - M Z Gören
- Marmara University School of Medicine, Department of Medical Pharmacology, Başıbüyük Health Campus, Basic Medical Sciences Building, Başıbüyük, Maltepe, 34854 Istanbul, Turkey
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11
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Delporte C, Boudjeltia KZ, Noyon C, Furtmüller PG, Nuyens V, Slomianny MC, Madhoun P, Desmet JM, Raynal P, Dufour D, Koyani CN, Reyé F, Rousseau A, Vanhaeverbeek M, Ducobu J, Michalski JC, Nève J, Vanhamme L, Obinger C, Malle E, Van Antwerpen P. Impact of myeloperoxidase-LDL interactions on enzyme activity and subsequent posttranslational oxidative modifications of apoB-100. J Lipid Res 2014; 55:747-57. [PMID: 24534704 DOI: 10.1194/jlr.m047449] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Oxidation of LDL by the myeloperoxidase (MPO)-H2O2-chloride system is a key event in the development of atherosclerosis. The present study aimed at investigating the interaction of MPO with native and modified LDL and at revealing posttranslational modifications on apoB-100 (the unique apolipoprotein of LDL) in vitro and in vivo. Using amperometry, we demonstrate that MPO activity increases up to 90% when it is adsorbed at the surface of LDL. This phenomenon is apparently reflected by local structural changes in MPO observed by circular dichroism. Using MS, we further analyzed in vitro modifications of apoB-100 by hypochlorous acid (HOCl) generated by the MPO-H2O2-chloride system or added as a reagent. A total of 97 peptides containing modified residues could be identified. Furthermore, differences were observed between LDL oxidized by reagent HOCl or HOCl generated by the MPO-H2O2-chloride system. Finally, LDL was isolated from patients with high cardiovascular risk to confirm that our in vitro findings are also relevant in vivo. We show that several HOCl-mediated modifications of apoB-100 identified in vitro were also present on LDL isolated from patients who have increased levels of plasma MPO and MPO-modified LDL. In conclusion, these data emphasize the specificity of MPO to oxidize LDL.
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Affiliation(s)
- Cédric Delporte
- Laboratory of Pharmaceutical Chemistry Faculty of Pharmacy, Université Libre de Bruxelles, Brussels, Belgium
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12
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Ram HNA, Sriwastava NK, Makhija IK, Shreedhara CS. Anti-inflammatory activity of Ajmodadi Churna extract against acute inflammation in rats. J Ayurveda Integr Med 2012; 3:33-7. [PMID: 22529678 PMCID: PMC3326793 DOI: 10.4103/0975-9476.93946] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Revised: 08/02/2011] [Accepted: 08/22/2011] [Indexed: 11/29/2022] Open
Abstract
Background: Ayurvedic polyherbal formulations are widely prescribed for a wide range of inflammatory conditions, yet, despite widespread use, there has been no systematic documentation of their safety and efficacy. Objective: The present study was undertaken to evaluate the anti-inflammatory activity of aqueous extracts of Ajmodadi churna (AJM) in rats. Materials and Methods: Carrageenan-induced hind paw edema and air pouch inflammation models were used for the study. Results: The extracts showed significant antiinflammatory activity, reducing paw edema volume by 0.417 ± 0.097 and 0.379 ± 0.049, respectively. In the carrageenan-induced air pouch model, AJM reduced total leukocyte count by 73.09 ± 7.13 and 62.17 ± 10.53, granulocyte count by 69.48 ± 5.44 and 63.33 ± 4.13, and myeloperoxidase activity by 14.84 ± 0.91 and 18.44 ± 3.18, respectively, compared to controls. Discussion and Conclusion: AJM significantly reduced paw edema, during the second phase of edema development. In the carrageenan-induced air pouch model, AJM inhibited cellular infiltration into the air pouch fluid. We conclude that AJM is an effective candidate for prevention or treatment of acute inflammation
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Affiliation(s)
- H N Aswatha Ram
- Department of Pharmacognosy, Manipal College of Pharmaceutical Sciences, Manipal University, Manipal, Karnataka, India
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13
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Salvolini E, Orciani M, Vignini A, Di Primio R, Mazzanti L. The effects of disodium pamidronate on human polymorphonuclear leukocytes and platelets: an in vitro study. Cell Mol Biol Lett 2009; 14:457-65. [PMID: 19238333 PMCID: PMC6275572 DOI: 10.2478/s11658-009-0012-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2008] [Accepted: 02/16/2009] [Indexed: 11/21/2022] Open
Abstract
Recent reports have indicated that, as well as having antiresorptive effects, bisphosphonates could have an application as anti-inflammatory drugs. Our aim was to investigate whether this anti-inflammatory action could be mediated by the nitric oxide (NO) released by the leukocytes migrating to the site of inflammation. In particular, we investigated in vitro the intracellular calcium concentration ([Ca2+](i)), the level of NO released by PMN and platelets, and the PMN myeloperoxidase activity after incubation with disodium pamidronate, since there was a postulated modulatory effect of this aminosubstituted bisphosphonate on leukocytes both in vitro and in vivo. Our data shows that the pamidronate treatment provoked a significant increase in the [Ca2+](i) parallel to the enhancement in NO release, suggesting a possible activation of constitutive nitric oxide synthase, while the myeloperoxidase activity was significantly reduced. In conclusion, we hypothesized that treatment with pamidronate could stimulate NO-production by cells present near the bone compartment, thus constituting a protective mechanism against bone resorption occurring during inflammation. In addition, PMN- and platelet-derived NO could act as a negative feed-back signal to restrict the inflammatory processes.
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Affiliation(s)
- Eleonora Salvolini
- Department of Molecular Pathology and Innovative Therapies - Histology, Polytechnic University of Marche, Via Tronto 10/A, 60020, Ancona, Italy.
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14
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Garg P, Vijay-Kumar M, Wang L, Gewirtz AT, Merlin D, Sitaraman SV. Matrix metalloproteinase-9-mediated tissue injury overrides the protective effect of matrix metalloproteinase-2 during colitis. Am J Physiol Gastrointest Liver Physiol 2009; 296:G175-84. [PMID: 19171847 PMCID: PMC2643910 DOI: 10.1152/ajpgi.90454.2008] [Citation(s) in RCA: 123] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Matrix metalloproteinases (MMP) play an important role in pathogenesis of inflammatory bowel disease (IBD). Two known gelatinases, MMP-2 and MMP-9, are upregulated during IBD. Epithelial-derived MMP-9 is an important mediator of tissue injury in colitis, whereas MMP-2 protects against tissue damage and maintains gut barrier function. It has been suggested that developing strategies to block MMP-9 activity in the gut might be of benefit to IBD. However, given that MMP-2 and MMP-9 are structurally similar, such approaches would also likely inhibit MMP-2. Thus, to gain insight into outcome of inhibiting both MMP-2 and MMP-9, MMP-2(-/-)/MMP-9(-/-) double knockout mice (dKO) lacking both MMP-2 and MMP-9 were used in this study. Three models of murine colitis were used: dextran sodium sulfate (DSS), Salmonella typhimurium (S.T.), and trinitrobenzene sulfonic acid (TNBS). Our data demonstrate that MMP-2 and MMP-9 activities were highly upregulated in wild-type (WT) mice treated with DSS, S.T., or TNBS whereas dKO mice were resistant to the development of colitis. WT mice had extensive inflammation and tissue damage compared with dKO mice as suggested by histological assessment and myeloperoxidase activity. In conclusion, these results suggest an overriding role of MMP-9 in mediating tissue injury compared with the protective role of MMP-2 in development of colitis. Thus inhibition of MMP-9 may be beneficial in treatment of colitis even if resulting in inhibition of MMP-2.
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Affiliation(s)
- Pallavi Garg
- Division of Digestive Diseases, Department of Pathology, Emory University, Atlanta, Georgia
| | - Matam Vijay-Kumar
- Division of Digestive Diseases, Department of Pathology, Emory University, Atlanta, Georgia
| | - Lixin Wang
- Division of Digestive Diseases, Department of Pathology, Emory University, Atlanta, Georgia
| | - Andrew T. Gewirtz
- Division of Digestive Diseases, Department of Pathology, Emory University, Atlanta, Georgia
| | - Didier Merlin
- Division of Digestive Diseases, Department of Pathology, Emory University, Atlanta, Georgia
| | - Shanthi V. Sitaraman
- Division of Digestive Diseases, Department of Pathology, Emory University, Atlanta, Georgia
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15
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Fernandes ES, Passos GF, Campos MM, Araújo JGVC, Pesquero JL, Avelllar MC, Teixeira MM, Calixto JB. Mechanisms underlying the modulatory action of platelet activating factor (PAF) on the upregulation of kinin B1 receptors in the rat paw. Br J Pharmacol 2003; 139:973-81. [PMID: 12839871 PMCID: PMC1573912 DOI: 10.1038/sj.bjp.0705314] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
1. The present study evaluated the ability of the administration of platelet activating factor (PAF) to induce the upregulation of B(1) receptors in the rat paw. 2. Local treatment with PAF resulted in a time-dependent increase of oedema formation induced by the B(1) receptor agonist des-Arg(9)-BK (des-Arg(9)-bradykinin), but not by the B(2) receptor agonist tyrosine(8)-bradykinin. Functional upregulation of B(1) receptors was accompanied by a prominent increase of B(1) receptor mRNA expression in the rat paw. 3. In PAF-treated paws, des-Arg(9)-BK-induced oedema formation was significantly inhibited by the B(1) receptor antagonists des-Arg(9)-[Leu(8)]-BK and R-715. The effects of PAF pretreatment were receptor operated, as assessed by the effects of the PAF receptor antagonist WEB2086 or by desensitisation of PAF receptors. 4. The protein synthesis inhibitor cycloheximide, the anti-inflammatory steroid dexamethasone or the nuclear factor (NF-kappaB) blockers pyrrolidine-dithiocarbamate (PDTC) and Nalpha-tosyl-L-chloromethylketone significantly blocked the functional upregulation of B(1) receptors. 5. The selectin inhibitor fucoidin, an anti-CD18 antibody or an anti-rat neutrophil antiserum, also significantly prevented des-Arg(9)-BK-induced paw oedema in rats pretreated with PAF. 6. Intradermal injection of PAF induced a 25-fold increase of myeloperoxidase activity in the rat paw, a response that was significantly inhibited by fucoidin, anti-CD-18, anti-rat neutrophil antiserum or PDTC. 7. Local treatment with PAF also resulted in a marked increase of NF-kappaB activation, an effect largely prevented by PDTC or by the anti-rat neutrophil antiserum. 8. Collectively, the present results indicate that the induction of B(1) receptors following treatment with the chemotatic mediator PAF is dependent on the recruitment of neutrophils, an event that is under the control of adhesion molecules, protein synthesis and NF-kappaB activation. These findings provide new insights into the role played by cell migration and chemotatic factors on B(1) receptor upregulation in vivo.
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Affiliation(s)
- Elizabeth S Fernandes
- Department of Pharmacology, Centre of Biological Sciences, Universidade Federal de Santa Catarina, Rua Ferreira Lima, 82, Florianópolis, SC 88015-420, Brazil
| | - Giselle F Passos
- Department of Pharmacology, Centre of Biological Sciences, Universidade Federal de Santa Catarina, Rua Ferreira Lima, 82, Florianópolis, SC 88015-420, Brazil
| | - Maria M Campos
- Department of Pharmacology, Centre of Biological Sciences, Universidade Federal de Santa Catarina, Rua Ferreira Lima, 82, Florianópolis, SC 88015-420, Brazil
| | - José G V C Araújo
- Department of Physiology and Biophysics, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Jorge L Pesquero
- Department of Physiology and Biophysics, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maria C Avelllar
- Section of Experimental Endocrinology, Department of Pharmacology, Universidade Federal de São Paulo – Escola Paulista de Medicina, São Paulo, 04044-020, Brazil
| | - Mauro M Teixeira
- Department of Biochemistry and Immunology, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - João B Calixto
- Department of Pharmacology, Centre of Biological Sciences, Universidade Federal de Santa Catarina, Rua Ferreira Lima, 82, Florianópolis, SC 88015-420, Brazil
- Author for correspondence:
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16
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Abe K, Arai T, Mori M, Kida H, Goya S, Matsuoka H, Osaki T, Tachibana I, Hayashi S. Effects of in vivo soluble selectin gene introduction of lps-induced leukocyte accumulation in the murine lung. Inflammation 1999; 23:523-34. [PMID: 10565566 PMCID: PMC7102382 DOI: 10.1023/a:1020238422788] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The selectin family adhesion molecules exert a crucial role in accumulation of leukocytes at the site of inflammation. To test the biological effects of soluble selectin on lung inflammation, we introduced an expression plasmid vector of soluble selectin gene via HVJ-liposome into a murine model of LPS-induced lung injury. The myeloperoxidase activity in LPS-injected mice was suppressed by the in vivo injection of soluble P-selectin gene relative to control mice. On the contrary, soluble E- or L-selectin genes did not exert suppressive effects. Our observations suggest that P-selectin plays a crucial role in the initial steps of lung inflammation, and exogenous introduction of soluble P-selectin by in vivo gene transfer method may be a useful strategy for regulating inflammation of the lung.
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Affiliation(s)
- K Abe
- Department of Molecular Medicine, Osaka University Medical School, Suita-city, Japan
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