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George C, Smith C, Isaacs AW, Huisamen B. Chronic Prosopis glandulosa treatment blunts neutrophil infiltration and enhances muscle repair after contusion injury. Nutrients 2015; 7:815-30. [PMID: 25625816 PMCID: PMC4344562 DOI: 10.3390/nu7020815] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Accepted: 01/09/2015] [Indexed: 12/31/2022] Open
Abstract
The current treatment options for soft tissue injuries remain suboptimal and often result in delayed/incomplete recovery of damaged muscle. The current study aimed to evaluate the effects of oral Prosopis glandulosa treatment on inflammation and regeneration in skeletal muscle after contusion injury, in comparison to a conventional treatment. The gastrocnemius muscle of rats was subjected to mass-drop injury and muscle samples collected after 1-, 3 h, 1- and 7 days post-injury. Rats were treated with P. glandulosa (100 mg/kg/day) either for 8 weeks prior to injury (up until day 7 post-injury), only post-injury, or with topically applied diclofenac post-injury (0.57 mg/kg). Neutrophil (His48-positive) and macrophage (F4/80-positive) infiltration was assessed by means of immunohistochemistry. Indicators of muscle satellite cell proliferation (ADAM12) and regeneration (desmin) were used to evaluate muscle repair. Chronic P. glandulosa and diclofenac treatment (p < 0.0001) was associated with suppression of the neutrophil response to contusion injury, however only chronic P. glandulosa treatment facilitated more effective muscle recovery (increased ADAM12 (p < 0.05) and desmin (p < 0.001) expression), while diclofenac treatment had inhibitory effects on repair, despite effective inhibition of neutrophil response. Data indicates that P. glandulosa treatment results in more effective muscle repair after contusion.
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Affiliation(s)
- Cindy George
- Department of Biomedical Sciences, Faculty of Health Science, Stellenbosch University, Tygerberg 7505, South Africa.
| | - Carine Smith
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch 7600, South Africa.
| | - Ashwin W Isaacs
- Department of Physiological Sciences, Faculty of Science, Stellenbosch University, Stellenbosch 7600, South Africa.
| | - Barbara Huisamen
- Department of Biomedical Sciences, Faculty of Health Science, Stellenbosch University, Tygerberg 7505, South Africa.
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Abstract
As central regulators of the adaptive immune response, dendritic cells (DCs) are found in virtually all lymphatic and non-lymphatic organs. A compact network of DCs also spans the kidneys. DCs play a central role in maintenance of organ homeostasis as well as in induction of immune responses against invading pathogens. They can mediate protective or destructive functions in a context-dependent manner.We recently identified CX(3)CR1 as a kidney-specific "homing receptor" for DCs. There was a strong reduction of DCs in the kidneys of CX(3)CR1-deficient mice compared to controls. This reduction was not observed in other organs except the small intestine. As a possible underlying reason we found a strong expression of the CX(3)CR1 ligand fractalkine in the kidneys. Due to this CX(3)CR1-dependent reduction of DCs, especially in the renal cortex, a glomerulonephritis (GN) model was ameliorated in CX(3)CR1-deficient mice. In contrast, the immune defense against the most common renal infection, bacterial pyelonephritis (PN), was not significantly influenced by CX(3)CR1-deficiency. This was explained by the much smaller CX(3)CR1-dependency of medullary DCs, which recruit effector cells into the kidney during PN. Additionally, once neutrophils had been recruited by mechanisms distinct from CX(3)CR1, they carried out some of the functions of DCs.Taken together, we suggest CX(3)CR1 as a therapeutic target for GN treatment, as the absence of CX(3)CR1 selectively influences DCs in the kidney without rendering mice more susceptible towards bacterial kidney infections.
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Affiliation(s)
- Katharina Hochheiser
- Institute of Experimental Immunology(IMMEI), Rheinische Friedrich-Wilhelms University, 53105, Bonn, Germany,
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153
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Shin IS, Shin NR, Park JW, Jeon CM, Hong JM, Kwon OK, Kim JS, Lee IC, Kim JC, Oh SR, Ahn KS. Melatonin attenuates neutrophil inflammation and mucus secretion in cigarette smoke-induced chronic obstructive pulmonary diseases via the suppression of Erk-Sp1 signaling. J Pineal Res 2015; 58:50-60. [PMID: 25388990 DOI: 10.1111/jpi.12192] [Citation(s) in RCA: 88] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 11/07/2014] [Indexed: 01/13/2023]
Abstract
The incidence of chronic obstructive pulmonary disease (COPD) has substantially increased in recent decade. Cigarette smoke (CS) is the most important risk factor in the development of COPD. In this study, we investigated the effects of melatonin on the development of COPD using a CS and lipopolysaccharide (LPS)-induced COPD model and cigarette smoke condensate (CSC)-stimulated NCI-H292 cells, a human mucoepidermoid carcinoma cell. On day 4, the mice were treated intranasally with LPS. The mice were exposed to CS for 1 hr per day (8 cigarettes per day) from day 1 to day 7. Melatonin (10 or 20 mg/kg) was injected intraperitoneally 1 hr before CS exposure. Melatonin markedly decreased the neutrophil count in the BALF, with reduction in the proinflammatory mediators and MUC5AC. Melatonin inhibited Erk phosphorylation and Sp1 expression induced by CS and LPS treatment. Additionally, melatonin decreased airway inflammation with a reduction in myeloperoxidase expression in lung tissue. In in vitro experiments, melatonin suppressed the elevated expression of proinflammatory mediators induced by CSC treatment. Melatonin reduced Erk phosphorylation and Sp1 expression in CSC-stimulated H292 cells. In addition, cotreatment of melatonin and Erk inhibitors significantly limited the proinflammatory mediators with greater reductions in Erk phosphorylation and Sp1 expression than that observed in H292 cells treated with Erk inhibitor alone. Taken together, melatonin effectively inhibited the neutrophil airway inflammation induced by CS and LPS treatment, which was closely related to downregulation of Erk phosphorylation. These findings suggest that melatonin has a therapeutic potential for the treatment of COPD.
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Affiliation(s)
- In-Sik Shin
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Chungbuk, Korea; College of Veterinary Medicine, Chonnam National University, Gwangju, Korea
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154
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Werawatganon D, Rakananurak N, Sallapant S, Prueksapanich P, Somanawat K, Klaikeaw N, Rerknimitr R. Aloe vera attenuated gastric injury on indomethacin-induced gastropathy in rats. World J Gastroenterol 2014; 20:18330-18337. [PMID: 25561799 PMCID: PMC4277969 DOI: 10.3748/wjg.v20.i48.18330] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/04/2014] [Revised: 08/06/2014] [Accepted: 09/05/2014] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate the protective effects of Aloe vera on gastric injury in rats with indomethacin (IMN)-induced gastropathy.
METHODS: Male Sprague-Dawley rats were randomly divided into three groups. Group 1 (control, n = 6) was given distilled water (DW) orally. Group 2 (IMN, n = 6) was given oral IMN (150 mg/kg) dissolved in 5% sodium bicarbonate (NaHCO3-) at time 0 and 4 h. Group 3 (Aloe vera-treated, n = 6) was given oral Aloe vera (150 mg/kg) dissolved in DW and IMN at time 0 and 4 h. Eight hours later, the stomach was removed to determine gastric malondialdehyde (MDA), the number of interleukin (IL)-18 positive stained cells (%) by immunohistochemistry, and for histopathological examination. Then, the serum was collected to determine tumor necrosis factor (TNF)-α and cytokine-induced neutrophil chemoattractant (CINC)-1 by sandwich enzyme linked immunosorbent assay method.
RESULTS: In the IMN group, serum TNF-α, CINC-1 and gastric MDA were significantly increased when compared to the control group (27.78 ± 1.52 pg/mL vs 85.07 ± 49.11 pg/mL, P = 0.009; 104.55 ± 45.80 pg/mL vs 1054.70 ± 20.38 pg/mL, and 1.74 ± 0.21 nmol/mg vs 9.36 ± 1.07 nmol/mg protein, P = 0.000, respectively). The mean level of TNF-α, CINC-1 and gastric MDA in the Aloe vera-treated group were improved as compared with the IMN group (85.07 ± 49.11 pg/mL vs 35.19 ± 1.61 pg/mL, P = 0.021; 1054.70 ± 20.38 pg/mL vs 813.56 ± 239.04 pg/mL, P = 0.025; and 9.36 ± 1.07 nmol/mg vs 2.67 ± 0.64 nmol/mg protein, P = 0.000, respectively). The number of IL-18 positive stained cells (%) in the gastric epithelial cells of the IMN group was significantly higher than the control group (5.01% ± 3.73% vs 30.67% ± 2.03%, P = 0.000, respectively). In contrast, Aloe vera treatment decreased the number of IL-18 positive stained cells (%) significantly when compared with the IMN group (30.67% ± 2.03% vs 13.21% ± 1.10%, P = 0.000, respectively). Most rats in the IMN group developed moderate to severe gastric inflammation and erosions. The gastric erosions and neutrophil infiltration scores were significantly reduced in the Aloe vera-treated group.
CONCLUSION: Aloe vera attenuated IMN-induced gastropathy in rats by the reduction of oxidative stress, inflammation, and improvement of gastric histopathology.
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155
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Wigenstam E, Koch B, Bucht A, Jonasson S. N-acetyl cysteine improves the effects of corticosteroids in a mouse model of chlorine-induced acute lung injury. Toxicology 2014; 328:40-7. [PMID: 25497111 DOI: 10.1016/j.tox.2014.12.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [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: 10/24/2014] [Revised: 12/09/2014] [Accepted: 12/09/2014] [Indexed: 01/08/2023]
Abstract
Chlorine (Cl2) causes tissue damage and a neutrophilic inflammatory response in the airways manifested by pronounced airway hyperreactivity (AHR). The importance of early anti-inflammatory treatment has previously been addressed. In the previous study, both high-dose and low-dose of dexamethasone (DEX) decreased the risk of developing delayed effects, such as persistent lung injuries, while only high-dose treatment could significantly counteract acute-phase effects. One aim of this study was to evaluate whether a low-dose of DEX in combination with the antioxidant N-acetyl cysteine (NAC) and if different treatments (Triptolide, Reparixin and Rolipram) administered 1h after Cl2-exposure could improve protection against acute lung injury in Cl2-exposed mice. BALB/c mice were exposed to 300 ppm Cl2 during 15 min. Assessment of AHR and inflammatory cells in bronchoalveolar lavage was analyzed 24h post exposure. Neither of DEX nor NAC reduced the AHR and displayed only minor effects on inflammatory cell influx when given as separate treatments. When given in combination, a protective effect on AHR and a significant reduction in inflammatory cells (neutrophils) was observed. Neither of triptolide, Reparixin nor Rolipram had an effect on AHR but Triptolide had major effect on the inflammatory cell influx. Treatments did not reduce the concentration of either fibrinogen or plasminogen activator inhibitor-1 in serum, thereby supporting the theory that the inflammatory response is not solely limited to the lung. These results provide a foundation for future studies aimed at identifying new concepts for treatment of chemical-induced lung injury. Studies addressing combination of anti-inflammatory and antioxidant treatment are highly motivated.
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Affiliation(s)
- Elisabeth Wigenstam
- Swedish Defence Research Agency, Division of CBRN Defence and Security, Umeå, Sweden
| | - Bo Koch
- Swedish Defence Research Agency, Division of CBRN Defence and Security, Umeå, Sweden
| | - Anders Bucht
- Swedish Defence Research Agency, Division of CBRN Defence and Security, Umeå, Sweden; Department of Public Health and Clinical Medicine, Division of Respiratory Medicine, Umeå University, Sweden
| | - Sofia Jonasson
- Swedish Defence Research Agency, Division of CBRN Defence and Security, Umeå, Sweden.
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156
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Nordgren TM, Friemel TD, Heires AJ, Poole JA, Wyatt TA, Romberger DJ. The omega-3 fatty acid docosahexaenoic acid attenuates organic dust-induced airway inflammation. Nutrients 2014; 6:5434-52. [PMID: 25436433 PMCID: PMC4276977 DOI: 10.3390/nu6125434] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Revised: 11/03/2014] [Accepted: 11/13/2014] [Indexed: 12/31/2022] Open
Abstract
Workers exposed to organic dusts from concentrated animal feeding operations (CAFOs) are at risk for developing airway inflammatory diseases. Available preventative and therapeutic measures for alleviating dust-induced lung disease are inadequate. Because omega-3 fatty acids can mitigate inflammatory processes, we aimed to determine whether nutritional supplementation with the omega-3 fatty acid docosahexaenoic acid (DHA) could reduce the airway inflammatory consequences of exposures to organic dust. Aqueous extracts of organic dusts from swine CAFOs (ODE) were utilized. In DHA-pretreated human bronchial epithelial cells, lung fibroblasts, monocyte cell cultures, and precision-cut murine lung slices, we found that DHA pretreatment dose-dependently decreased ODE-induced inflammatory cytokine production. To determine the in vivo significance of DHA, C57BL/6 mice were orally administered DHA for seven days prior to treatment with intranasal ODE or saline inhalations. Animals treated with 2 mg DHA demonstrated significant reductions in ODE-induced bronchial alveolar lavage neutrophil influx and pro-inflammatory cytokine/chemokine production compared to mice exposed to ODE alone. Collectively, these data demonstrate that DHA affects several lung cells to reduce the airway inflammatory response to organic dust exposures. Dietary supplementation with DHA may be an effective therapeutic strategy to reduce the airway inflammatory consequences in individuals exposed to agriculture dust environments.
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Affiliation(s)
- Tara M Nordgren
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Taylor D Friemel
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Art J Heires
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Jill A Poole
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Todd A Wyatt
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Debra J Romberger
- Pulmonary, Critical Care, Sleep and Allergy Division, University of Nebraska Medical Center, Omaha, NE 68198, USA.
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157
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Kataoka H, Yang K, Rock KL. The xanthine oxidase inhibitor Febuxostat reduces tissue uric acid content and inhibits injury-induced inflammation in the liver and lung. Eur J Pharmacol 2014; 746:174-9. [PMID: 25449036 DOI: 10.1016/j.ejphar.2014.11.013] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 11/11/2014] [Accepted: 11/11/2014] [Indexed: 11/20/2022]
Abstract
Necrotic cell death in vivo induces a robust neutrophilic inflammatory response and the resulting inflammation can cause further tissue damage and disease. Dying cells induce this inflammation by releasing pro-inflammatory intracellular components, one of which is uric acid. Cells contain high levels of intracellular uric acid, which is produced when purines are oxidized by the enzyme xanthine oxidase. Here we test whether a non-nucleoside xanthine oxidase inhibitor, Febuxostat (FBX), can reduce intracellular uric acid levels and inhibit cell death-induced inflammation in two different murine tissue injury models; acid-induced acute lung injury and acetaminophen liver injury. Infiltration of inflammatory cells induced by acid injection into lungs or peritoneal administration of acetaminophen was evaluated by quantification with flow cytometry and tissue myeloperoxidase activity in the presence or absence of FBX treatment. Uric acid levels in serum and tissue were measured before giving the stimuli and during inflammation. The impact of FBX treatment on the peritoneal inflammation caused by the microbial stimulus, zymosan, was also analyzed to see whether FBX had a broad anti-inflammatory effect. We found that FBX reduced uric acid levels in acid-injured lung tissue and inhibited acute pulmonary inflammation triggered by lung injury. Similarly, FBX reduced uric acid levels in the liver and inhibited inflammation in response to acetaminophen-induced hepatic injury. In contrast, FBX did not reduce inflammation to zymosan, and therefore is not acting as a general anti-inflammatory agent. These results point to the potential of using agents like FBX to treat cell death-induced inflammation.
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Affiliation(s)
- Hiroshi Kataoka
- Department of Pathology, UMass Medical School, Worcester, MA 01605, USA
| | - Ke Yang
- Department of Pathology, UMass Medical School, Worcester, MA 01605, USA
| | - Kenneth L Rock
- Department of Pathology, UMass Medical School, Worcester, MA 01605, USA.
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158
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Uchiyama R, Ishii N, Arakura F, Kiniwa Y, Nakazawa K, Uhara H, Hashimoto T, Okuyama R. IgA/IgG pemphigus with infiltration of neutrophils and eosinophils in an ulcerative colitis patient. Acta Derm Venereol 2014; 94:737-8. [PMID: 24604005 DOI: 10.2340/00015555-1836] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Ryuhei Uchiyama
- Department of Dermatology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto, Nagano 390-8621, Japan
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159
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Panagos CG, Thomson DS, Moss C, Hughes AD, Kelly MS, Liu Y, Chai W, Venkatasamy R, Spina D, Page CP, Hogwood J, Woods RJ, Mulloy B, Bavington CD, Uhrín D. Fucosylated chondroitin sulfates from the body wall of the sea cucumber Holothuria forskali: conformation, selectin binding, and biological activity. J Biol Chem 2014; 289:28284-98. [PMID: 25147180 PMCID: PMC4192483 DOI: 10.1074/jbc.m114.572297] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [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] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 08/09/2014] [Indexed: 11/06/2022] Open
Abstract
Fucosylated chondroitin sulfate (fCS) extracted from the sea cucumber Holothuria forskali is composed of the following repeating trisaccharide unit: → 3)GalNAcβ4,6S(1 → 4) [FucαX(1 → 3)]GlcAβ(1 →, where X stands for different sulfation patterns of fucose (X = 3,4S (46%), 2,4S (39%), and 4S (15%)). As revealed by NMR and molecular dynamics simulations, the fCS repeating unit adopts a conformation similar to that of the Le(x) blood group determinant, bringing several sulfate groups into close proximity and creating large negative patches distributed along the helical skeleton of the CS backbone. This may explain the high affinity of fCS oligosaccharides for L- and P-selectins as determined by microarray binding of fCS oligosaccharides prepared by Cu(2+)-catalyzed Fenton-type and photochemical depolymerization. No binding to E-selectin was observed. fCS poly- and oligosaccharides display low cytotoxicity in vitro, inhibit human neutrophil elastase activity, and inhibit the migration of neutrophils through an endothelial cell layer in vitro. Although the polysaccharide showed some anti-coagulant activity, small oligosaccharide fCS fragments had much reduced anticoagulant properties, with activity mainly via heparin cofactor II. The fCS polysaccharides showed prekallikrein activation comparable with dextran sulfate, whereas the fCS oligosaccharides caused almost no effect. The H. forskali fCS oligosaccharides were also tested in a mouse peritoneal inflammation model, where they caused a reduction in neutrophil infiltration. Overall, the data presented support the action of fCS as an inhibitor of selectin interactions, which play vital roles in inflammation and metastasis progression. Future studies of fCS-selectin interaction using fCS fragments or their mimetics may open new avenues for therapeutic intervention.
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Affiliation(s)
- Charalampos G Panagos
- From the EaStCHEM School of Chemistry, Joseph Black Building, The King's Buildings, University of Edinburgh, Edinburgh EH9 3JJ, United Kingdom
| | - Derek S Thomson
- GlycoMar Ltd., European Centre for Marine Biotechnology, Dunstaffnage Marine Laboratory, Oban, Argyll PA37 1QA, United Kingdom
| | - Claire Moss
- GlycoMar Ltd., European Centre for Marine Biotechnology, Dunstaffnage Marine Laboratory, Oban, Argyll PA37 1QA, United Kingdom
| | - Adam D Hughes
- the Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll PA37 1QA, United Kingdom
| | - Maeve S Kelly
- the Scottish Association for Marine Science, Scottish Marine Institute, Oban, Argyll PA37 1QA, United Kingdom
| | - Yan Liu
- the Glycosciences Laboratory, Hammersmith Campus, Imperial College London, London W12 0NN, United Kingdom
| | - Wengang Chai
- the Glycosciences Laboratory, Hammersmith Campus, Imperial College London, London W12 0NN, United Kingdom
| | - Radhakrishnan Venkatasamy
- the Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| | - Domenico Spina
- the Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| | - Clive P Page
- the Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| | - John Hogwood
- the National Institute of Biological Standards and Controls, South Mimms, Potters Bar, Hertfordshire EN6 3QG, United Kingdom
| | - Robert J Woods
- the Complex Carbohydrate Research Center, the University of Georgia, Athens, Georgia 30602, and the School of Chemistry, National University of Ireland Galway, University Road, Galway, Ireland
| | - Barbara Mulloy
- the Glycosciences Laboratory, Hammersmith Campus, Imperial College London, London W12 0NN, United Kingdom, the Sackler Institute of Pulmonary Pharmacology, Institute of Pharmaceutical Science, King's College London, London SE1 9NH, United Kingdom
| | - Charlie D Bavington
- GlycoMar Ltd., European Centre for Marine Biotechnology, Dunstaffnage Marine Laboratory, Oban, Argyll PA37 1QA, United Kingdom
| | - Dušan Uhrín
- From the EaStCHEM School of Chemistry, Joseph Black Building, The King's Buildings, University of Edinburgh, Edinburgh EH9 3JJ, United Kingdom,
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160
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Tsao CM, Jhang JG, Chen SJ, Ka SM, Wu TC, Liaw WJ, Huang HC, Wu CC. Adjuvant potential of selegiline in attenuating organ dysfunction in septic rats with peritonitis. PLoS One 2014; 9:e108455. [PMID: 25268350 PMCID: PMC4182482 DOI: 10.1371/journal.pone.0108455] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 08/29/2014] [Indexed: 12/18/2022] Open
Abstract
Selegiline, an anti-Parkinson drug, has antioxidant and anti-apoptotic effects. To explore the effect of selegiline on sepsis, we used a clinically relevant animal model of polymicrobial sepsis. Cecal ligation and puncture (CLP) or sham operation was performed in male rats under anesthesia. Three hours after surgery, animals were randomized to receive intravenously selegiline (3 mg/kg) or an equivalent volume of saline. The administration of CLP rats with selegiline (i) increased arterial blood pressure and vascular responsiveness to norepinephrine, (ii) reduced plasma liver and kidney dysfunction, (iii) attenuated metabolic acidosis, (iv) decreased neutrophil infiltration in liver and lung, and (v) improved survival rate (from 44% to 65%), compared to those in the CLP alone rats. The CLP-induced increases of plasma interleukin-6, organ superoxide levels, and liver inducible nitric oxide synthase and caspase-3 expressions were ameliorated by selegiline treatment. In addition, the histological changes in liver and lung were significantly attenuated in the selegiline -treated CLP group compared to those in the CLP group. The improvement of organ dysfunction and survival through reducing inflammation, oxidative stress and apoptosis in peritonitis-induced sepsis by selegiline has potential as an adjuvant agent for critical ill.
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Affiliation(s)
- Cheng-Ming Tsao
- Department of Anesthesiology, Taipei Veterans General Hospital, and National Yang-Ming University, Taipei, Taiwan, R.O.C.
- Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Jhih-Gang Jhang
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Shiu-Jen Chen
- Department of Nursing, Kang-Ning Junior College of Medical Care and Management, Taipei, Taiwan, R.O.C.
- Department of Physiology, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Shuk-Man Ka
- Graduate Institute of Aerospace and Undersea Medicine, National Defense Medical Center, Taipei, Taiwan, R.O.C.
| | - Tao-Cheng Wu
- Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan, R.O.C.
- Cardiovascular Research Center, National Yang-Ming University, Taipei, Taiwan, R.O.C.
| | - Wen-Jinn Liaw
- Department of Anesthesiology, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, R.O.C.
- Department of Anesthesiology, Tungs' Taichung MetroHarbor Hospital, Taichung, Taiwan, R.O.C.
| | - Hsieh-Chou Huang
- Department of Anesthesiology, Cheng-Hsin General Hospital, Taipei, Taiwan, R.O.C.
- * E-mail: (HCH); (CCW)
| | - Chin-Chen Wu
- Department of Pharmacology, National Defense Medical Center, Taipei, Taiwan, R.O.C.
- Department of Pharmacology, Taipei Medical University, Taipei, Taiwan, R.O.C.
- * E-mail: (HCH); (CCW)
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161
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Yang M, Chen J, Zhao J, Meng M. Etanercept attenuates myocardial ischemia/reperfusion injury by decreasing inflammation and oxidative stress. PLoS One 2014; 9:e108024. [PMID: 25260027 PMCID: PMC4178063 DOI: 10.1371/journal.pone.0108024] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 08/18/2014] [Indexed: 11/19/2022] Open
Abstract
The protective role of etanercept in myocardial ischemia/reperfusion is not well understood. The aim of this study was to investigate whether etanercept modulates neutrophil accumulation, TNF-α induction and oxidative stress in an ischemia/reperfusion injured rat heart model. Rats were randomly exposed to sham operation, myocardial ischemia/reperfusion (MI/R) alone, MI/R+ etanercept. The results demonstrated that compared to MI/R, etanercept reduced myocardial infarction area, myocardial myeloperoxidase (MPO) levels, serum creatinine kinase (CK) and lactate dehydrogenase (LDH) levels, and both serum and myocardial TNF-α production. Etanercept also markedly enhanced the activities of antioxidant enzymes superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX), and reduced the level of malondialdehyde (MDA) in MI/R rats. In summary, our data suggested that etanercept has protective effects against MI/R injury in rats, which may be attributed to attenuating inflammation and oxidative stress.
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Affiliation(s)
- Mei Yang
- Department of Critical Care Medicine, the Third Hospital of Jinan, Jinan, People’s Republic of China
- * E-mail:
| | - Jianchang Chen
- Department of Emergency, Shandong Provincial Hospital, Jinan, People’s Republic of China
| | - Jing Zhao
- Department of Cardiology, Qilu Hospital of Shandong University, Jinan, People’s Republic of China
| | - Mei Meng
- Department of Critical Care Medicine, Shandong Provincial Hospital, Jinan, People’s Republic of China
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162
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Shi Z, Lian A, Zhang F. Nuclear factor-κB activation inhibitor attenuates ischemia reperfusion injury and inhibits Hmgb1 expression. Inflamm Res 2014; 63:919-25. [PMID: 25209109 DOI: 10.1007/s00011-014-0765-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2013] [Revised: 06/08/2014] [Accepted: 07/26/2014] [Indexed: 01/12/2023] Open
Abstract
OBJECTIVE AND DESIGN To investigate the effects of nuclear factor-κB activation inhibitor dehydroxymethylepoxyquinomicin (DHMEQ) on cardiac ischemia reperfusion injury in a transplantation model. METHODS Hearts of C57BL/6 mice were flushed and stored in cold Bretschneider solution for 8 h and then transplanted into syngeneic recipient. Some mice were administrated intraperitoneally with DHMEQ (8 mg/kg) 1 h before reperfusion. For inhibition of Hmgb1, mice were treated with glycyrrhizin at 250 mg/kg prior to reperfusion. RESULTS DHMEQ decreased cardiomyocyte apoptosis and recruitment of neutrophils and macrophages. Troponin T (TnT) production on 24 h after myocardial IR injury was reduced by DHMEQ treatment. Cardiac output at 60 mmHg of afterload pressure was significantly increased in hearts with DHMEQ treatment (IR+DHMEQ: 58.6 ± 5.75 ml/min; IR: 25.9 ± 4.1 ml/min; P < 0.05). Furthermore, DHMEQ suppressed high mobility group protein (Hmgb1) expression. And the Caspase 3 activity, the number of TUNEL-positive cardiomyocytes and infiltrated neutrophil in cardiac allograft were markedly decreased with Hmgb1 inhibitor treatment. CONCLUSIONS Nuclear factor-κB activation inhibitor DHMEQ attenuates ischemia reperfusion injury in a cardiac transplantation model and it may be a suitable agent for the protection of the cardiac against ischemia reperfusion injury.
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Affiliation(s)
- Zhiyong Shi
- Department of Cardiothoracic Surgery, China Pingmei Shenma Medical Group General Hospital, Pingdingshan Kuanggong Road 1#, Henan, China,
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163
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Liu T, Schneider RA, Lee NY, Hoyt DG. Peptidylprolyl cis/trans isomerase, NIMA-interacting 1 (PIN1) regulates pulmonary effects of endotoxin and tumor necrosis factor-α in mice. Biochem Biophys Res Commun 2014; 452:468-72. [PMID: 25159840 DOI: 10.1016/j.bbrc.2014.08.089] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [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] [Received: 08/07/2014] [Accepted: 08/19/2014] [Indexed: 01/13/2023]
Abstract
Peptidylprolyl cis/trans isomerase, NIMA-interacting 1 (PIN1) modulates phospho-signaling by catalyzing rotation of the bond between a phosphorylated serine or threonine before proline in proteins. As depletion of PIN1 increased inflammatory protein expression in cultured endothelial cells treated with bacterial endotoxin (lipopolysaccharide, LPS) and interferon-γ, we hypothesized that PIN1 knockout would increase sensitivity to LPS-induced lung inflammation in mice. Mortality due to a high dose of LPS (30mg/kg) was greater in knockout than wildtype mice. Lung myeloperoxidase activity, reflecting neutrophils, was increased to a 35% higher level in PIN1 knockout mouse lung, as compared with wildtype, after treatment with a sublethal dose of 3mgLPS/kg, ip. Unexpectedly, plasma tumor necrosis factor-α (TNF) was approximately 50% less than in wildtype mice. Knockout mice, however, were more sensitive than wildtype to TNF-induced neutrophil accumulation. The neutrophil adhesion molecule, E-selectin, was also elevated in lungs of knockout mice treated with TNF, suggesting that PIN1 depletion increases endothelial sensitivity to TNF. Indeed, TNF induced more reactive oxygen species in cultured endothelial cells depleted of PIN1 with short hairpin RNA than in control cells. Collectively, the results indicate that while PIN1 normally facilitates TNF production in LPS-treated mice, it suppresses pulmonary and endothelial reactions to the cytokine. Tissue or cell-specific effects of PIN1 may affect the overall inflammatory response to LPS and other stimuli.
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Affiliation(s)
- Tongzheng Liu
- Division of Oncology Research, Department of Oncology, Mayo Clinic, Rochester, MN 55905, USA.
| | - Ryan A Schneider
- College of Pharmacy, The University of Findlay, Findlay, OH 45840, USA.
| | - Nam Y Lee
- Division of Pharmacology, The Ohio State University College of Pharmacy and The Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH 43210, USA.
| | - Dale G Hoyt
- Division of Pharmacology, The Ohio State University College of Pharmacy and The Dorothy M. Davis Heart and Lung Research Institute, Columbus, OH 43210, USA.
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Gomides LF, Lima OCO, Matos NA, Freitas KM, Francischi JN, Tavares JC, Klein A. Blockade of proteinase-activated receptor 4 inhibits neutrophil recruitment in experimental inflammation in mice. Inflamm Res 2014; 63:935-41. [PMID: 25118784 DOI: 10.1007/s00011-014-0767-8] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2014] [Revised: 07/14/2014] [Accepted: 08/05/2014] [Indexed: 01/22/2023] Open
Abstract
OBJECTIVE AND DESIGN The activation of proteinase-activated receptors (PARs) has been implicated in the development of important hallmarks of inflammation, including in vivo leukocyte recruitment; however, its role in the regulation of leukocyte migration in response to inflammatory stimuli has not been elucidated until now. Here, we examined the effects of the PAR4 antagonist YPGKF-NH 2 (tcY-NH2) on neutrophil recruitment in experimentally induced inflammation. METHODS BALB/c mice were intrapleurally injected with tcY-NH2 (40 ng/kg) prior to intrapleural injection of carrageenan (Cg) or neutrophil chemoattractant CXCL8; the number of infiltrating neutrophils was evaluated after 4 h, and KC production was assessed at different times after Cg injection. Neutrophil adhesion and rolling cells were studied using a brain circulation preparation 4 h after the Cg or CXCL8 challenge in tcY-NH2-treated mice. RESULTS PAR4 blockade inhibited CXCL8- and Cg-induced neutrophil migration into the pleural cavity of BALB/c mice and reduced neutrophil rolling and adherence. Surprisingly, PAR4 blockade increased the level of KC in response to carrageenan. CONCLUSION These results demonstrated that PAR4 blockade impairs neutrophil migration in vivo, suggesting that PAR4 plays an important role in the regulation of inflammation, at least in part because of its ability to inhibit the actions of the neutrophil chemoattractant CXCL8.
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Affiliation(s)
- Lindisley F Gomides
- Departamento de Farmacologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Av. Antônio Carlos 6627 Pampulha, 31270-901, Belo Horizonte, MG, Brazil
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165
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Li S, Pettersson US, Hoorelbeke B, Kolaczkowska E, Schelfhout K, Martens E, Kubes P, Van Damme J, Phillipson M, Opdenakker G. Interference with glycosaminoglycan-chemokine interactions with a probe to alter leukocyte recruitment and inflammation in vivo. PLoS One 2014; 9:e104107. [PMID: 25093679 PMCID: PMC4122422 DOI: 10.1371/journal.pone.0104107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Accepted: 07/08/2014] [Indexed: 12/02/2022] Open
Abstract
In vivo leukocyte recruitment is not fully understood and may result from interactions of chemokines with glycosaminoglycans/GAGs. We previously showed that chlorite-oxidized oxyamylose/COAM binds the neutrophil chemokine GCP-2/CXCL6. Here, mouse chemokine binding by COAM was studied systematically and binding affinities of chemokines to COAM versus GAGs were compared. COAM and heparan sulphate bound the mouse CXC chemokines KC/CXCL1, MIP-2/CXCL2, IP-10/CXCL10 and I-TAC/CXCL11 and the CC chemokine RANTES/CCL5 with affinities in the nanomolar range, whereas no binding interactions were observed for mouse MCP-1/CCL2, MIP-1α/CCL3 and MIP-1β/CCL4. The affinities of COAM-interacting chemokines were similar to or higher than those observed for heparan sulphate. Although COAM did not display chemotactic activity by itself, its co-administration with mouse GCP-2/CXCL6 and MIP-2/CXCL2 or its binding of endogenous chemokines resulted in fast and cooperative peritoneal neutrophil recruitment and in extravasation into the cremaster muscle invivo. These local GAG mimetic features by COAM within tissues superseded systemic effects and were sufficient and applicable to reduce LPS-induced liver-specific neutrophil recruitment and activation. COAM mimics glycosaminoglycans and is a nontoxic probe for the study of leukocyte recruitment and inflammation invivo.
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Affiliation(s)
- Sandra Li
- Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | | | - Bart Hoorelbeke
- Laboratory of Virology and Chemotherapy, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Elzbieta Kolaczkowska
- Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
- Jagiellonian University, Krakow, Poland
- Snyder Institute for Chronic Diseases, and Department of Physiology and Pharmacology, University of Calgary, Calgary, Canada
| | - Katrien Schelfhout
- Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Erik Martens
- Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Paul Kubes
- Snyder Institute for Chronic Diseases, and Department of Physiology and Pharmacology, University of Calgary, Calgary, Canada
| | - Jo Van Damme
- Laboratory of Molecular Immunology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
| | - Mia Phillipson
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Ghislain Opdenakker
- Laboratory of Immunobiology, Rega Institute for Medical Research, KU Leuven, Leuven, Belgium
- * E-mail:
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Sato H, Nakayama Y, Yamashita C, Uno H. Anti-Inflammatory Effects of Tacalcitol (1,24(R)(OH)2D3, TV-02) in the Skin of TPA-Treated Hairless Mice. J Dermatol 2014; 31:200-17. [PMID: 15187340 DOI: 10.1111/j.1346-8138.2004.tb00657.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2003] [Accepted: 11/11/2003] [Indexed: 11/30/2022]
Abstract
Tacalcitol (1,24(R)(OH)2D3, TV-02) inhibited the TPA-induced inflammatory cell infiltration (largely neutrophils) histopathologically and myeloperoxidase (MPO) activity dose-dependently. Tacalcitol inhibited the mRNA expression and protein production of TPA-induced macrophage inflammatory protein-2 (MIP-2) and KC, the functional analogue of human interleukin (IL)-8, in the skin. Immunohistochemical staining of the TPA-applied skin revealed that mast cells expressed MIP-2, whereas KC was observed in keratinocytes, fibroblasts and outer root sheath of hair follicles. Furthermore, tacalcitol inhibited TPA-induced mast cell degranulation 24 hr after application without influence on the total number of mast cells. In this study, tacalcitol was found to have an inhibitory effect on cutaneous inflammation such as inhibition of neutrophil infiltration, MIP-2 and KC production, and mast cell degranulation in TPA-treated hairless mice. These results suggest that tacalcitol modulates cutaneous inflammation as well as keratinocyte proliferation and differentiation, and the inhibitory effect of tacalcitol on cutaneous inflammation may contribute to clinical the effectiveness in the treatment of psoriasis.
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Affiliation(s)
- Hiroaki Sato
- Pharmacological Research Department, Pharmaceuticals Development Research Laboratories, Teijin Institute for Bio-Medical Research, Hino, Tokyo, Japan
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Arciniegas A, González K, Pérez-Castorena AL, Nieto-Camacho A, Villaseñor JL, Romo de Vivar A. Sesquiterpenoids from Pittocaulon filare. J Nat Prod 2014; 77:1304-1310. [PMID: 24842703 DOI: 10.1021/np401033h] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The phytochemical study of Pittocaulon filare afforded three oplopanes (1-3), a eudesmane (6), and three oplopane glucosides (7-9), one of them reported as its acetyl derivative (7a), together with several known compounds. The structures of the compounds were elucidated by spectroscopic analysis and chemical reactions. The anti-inflammatory activity of compounds 1-5 was determined using the 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced ear edema model, and the effect of compounds 1-4 on the recruitment of neutrophils was evaluated using the myeloperoxidase test. Compounds 1 and 2 were the more active anti-inflammatory agents, with lower ID50 values (0.17 and 0.18 μmol/ear, respectively) than indomethacin (0.24 μmol/ear), but they had a lesser effect on the inhibition of neutrophil infiltration than both indomethacin and compound 3, indicating that the tested compounds do not have the same ability to inhibit edema and to prevent cell infiltration.
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Affiliation(s)
- Amira Arciniegas
- Instituto de Química, Universidad Nacional Autónoma de México , Circuito Exterior, Ciudad Universitaria, Coyoacán 04510, D.F., México
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168
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Lima CKF, Silva RM, Lacerda RB, Santos BLR, Silva RV, Amaral LS, Quintas LEM, Fraga CAM, Barreiro EJ, Guimaraes MZP, Miranda ALP. LASSBio-1135: a dual TRPV1 antagonist and anti-TNF-alpha compound orally effective in models of inflammatory and neuropathic pain. PLoS One 2014; 9:e99510. [PMID: 24941071 PMCID: PMC4062389 DOI: 10.1371/journal.pone.0099510] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2013] [Accepted: 05/15/2014] [Indexed: 01/09/2023] Open
Abstract
LASSBio-1135 is an imidazo[1,2-a]pyridine derivative with high efficacy in screening models of nociception and inflammation, presumed as a weak COX-2 inhibitor. In order to tease out its mechanism of action, we investigated others possible target for LASSBio-1135, such as TNF-α and TRPV1, to better characterize it as a multitarget compound useful in the treatment of chronic pain. TRPV1 modulation was assessed in TRPV1-expressing Xenopus oocytes against capsaicin and low pH-induced current. Modulation of TNF-α production was evaluated in culture of macrophages stimulated with LPS. In vivo efficacy of LASSBio-1135 was investigated in carrageenan and partial sciatic ligation-induced thermal hyperalgesia and mechanical allodynia. Corroborating its previous demonstration of efficacy in a model of capsaicin-induced hyperalgesia, LASSBio-1135 blocks capsaicin-elicited currents in a non-competitive way with an IC50 of 580 nM as well as low pH-induced current at 50 µM. As an additional action, LASSBio-1135 inhibited TNF-α release in these cells stimulated by LPS with an IC50 of 546 nM by reducing p38 MAPK phosphorilation. Oral administration of 100 µmol.Kg−1 LASSBio-1135 markedly reduced thermal hyperalgesia induced by carrageenan, however at 10 µmol.Kg−1 only a partial reduction was observed at the 4th h. Neutrophil recruitment and TNF-α production after carrageenan stimulus was also inhibited by the treatment with LASSBio-1135. Modulating TRPV1 and TNF-α production, two key therapeutic targets of neuropathic pain, 100 µmol.Kg−1 LASSBio-1135 was orally efficacious in reversing thermal hyperalgesia and mechanical allodynia produced by partial sciatic ligation 7–11 days after surgery without provoking hyperthermia, a common side effect of TRPV1 antagonists. In conclusion LASSBio-1135, besides being a weak COX-2 inhibitor, is a non-competitive TRPV1 antagonist and a TNF-α inhibitor. As a multitarget compound, LASSBio-1135 is orally efficacious in a model of neuropathic pain without presenting hyperthermia.
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Affiliation(s)
- Cleverton K. F. Lima
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Rafael M. Silva
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Renata B. Lacerda
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Bruna L. R. Santos
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Rafaela V. Silva
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Luciana S. Amaral
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Luís E. M. Quintas
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Carlos A. M. Fraga
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Eliezer J. Barreiro
- Laboratório de Avaliação e Síntese de Substâncias Bioativas (LASSBio), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Marília Z. P. Guimaraes
- Instituto de Ciências Biomédicas, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Ana L. P. Miranda
- Laboratório de Estudos em Farmacologia Experimental (LEFEx), Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
- * E-mail:
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Watari K, Shibata T, Kawahara A, Sata KI, Nabeshima H, Shinoda A, Abe H, Azuma K, Murakami Y, Izumi H, Takahashi T, Kage M, Kuwano M, Ono M. Tumor-derived interleukin-1 promotes lymphangiogenesis and lymph node metastasis through M2-type macrophages. PLoS One 2014; 9:e99568. [PMID: 24924428 PMCID: PMC4055709 DOI: 10.1371/journal.pone.0099568] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2013] [Accepted: 05/16/2014] [Indexed: 02/06/2023] Open
Abstract
Tumors formed by a highly metastatic human lung cancer cell line are characterized by activated signaling via vascular endothelial growth factor (VEGF)-C through its receptor (VEGFR-3) and aggressive lymph node metastasis. In this study, we examined how these highly metastatic cancers acquired aggressive lymph node metastasis. Compared with their lower metastatic counterparts, the highly metastatic tumors formed by this cell line expressed higher amounts of interleukin (IL)-1α, with similarly augmented expression of IL-1α and IL-1β by tumor stromal cells and of VEGF-A and VEGF-C by tumor-associated macrophages. These tumor-associated macrophages were mainly of the M2 type. Administration of a macrophage-targeting drug suppressed the production of these potent angiogenic and lymphangiogenic factors, resulting in decreased tumor growth, angiogenesis, lymphangiogenesis, and lymph node metastasis. In Matrigel plug assays, the highly metastatic cells formed tumors that were extensively infiltrated by M2-type macrophages and exhibited enhanced angiogenesis and lymphangiogenesis. All of these responses were suppressed by the IL-1 receptor (IL-1R) antagonist anakinra. Thus, the IL-1α-driven inflammatory activation of angiogenesis and lymphangiogenesis seems to provide a highly metastatic tumor microenvironment favorable for lymph node metastasis through cross-talk with macrophages. Accordingly, the IL-1R/M2-type macrophage axis may be a good therapeutic target for patients with this form of lung cancer.
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Affiliation(s)
- Kosuke Watari
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Tomohiro Shibata
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Akihiko Kawahara
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Ken-ichi Sata
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Hiroshi Nabeshima
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Ai Shinoda
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Hideyuki Abe
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Koichi Azuma
- Department of Internal Medicine, Division of Respirology, Neurology, and Rheumatology, Kurume University School of Medicine, Kurume, Japan
| | - Yuichi Murakami
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
- St. Mary's Hospital, Kurume, Japan
| | - Hiroto Izumi
- Department of Occupational Pneumology, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Takashi Takahashi
- Division of Molecular Carcinogenesis, Center for Neurological Diseases and Cancer, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Masayoshi Kage
- Department of Diagnostic Pathology, Kurume University Hospital, Kurume, Japan
| | - Michihiko Kuwano
- Laboratory of Molecular Cancer Biology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
| | - Mayumi Ono
- Department of Pharmaceutical Oncology, Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka, Japan
- * E-mail:
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Skurikhin EG, Khmelevskaya ES, Ermakova NN, Pershina OV, Reztsova AM, Krupin VA, Stepanova IE, Reztsova VM, Reikhart DV, Dygai AM. Effect of spiperone on mesenchymal multipotent stromal and hemopoietic stem cells under conditions of pulmonary fibrosis. Bull Exp Biol Med 2014; 157:132-7. [PMID: 24913578 DOI: 10.1007/s10517-014-2508-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Indexed: 11/25/2022]
Abstract
The antifibrotic properties of spiperone and its effect on stem and progenitor cells were studied on the model of reversible bleomycin-induced pulmonary fibrosis in C57Bl/6 mice. Spiperone reduced infiltration of the alveolar interstitium and alveolar ducts with inflammatory cells and prevented the growth of the connective tissue in the parenchyma of bleomycin lungs. Apart from anti-inflammatory effect, spiperone suppressed bone marrow hemopoietic cells (CD3, CD45R (B220), Ly6C, Ly6G (Gr1), CD11b (Mac1), TER-119)-, Sca-1+, c-Kit+, CD34- and progenitor hemopoietic cells (granulocyte-erythroid-macrophage-megakaryocytic and granulocyte CFU). Spiperone-induced disturbances of fi brogenesis were paralleled by restoration of endothelial cells in the lung parenchyma, reduction of the number of circulating bone marrow cells and lung mesenchymopoietic cells (mesenchymal multipotent stromal cells (CD31-, CD34-, CD45-, CD44+, CD73+, CD90+, CD106+) and progenitor fi broblast cells), and suppression of multilineage differentiation of multipotent mesenchymal stromal cells (including fi broblast-lineage cells).
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Affiliation(s)
- E G Skurikhin
- Research Institute of Pharmacology, Siberian Division of the Russian Academy of Medical Sciences, Tomsk, Russia
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Abstract
Influenza A virus pandemics and emerging antiviral resistance highlight the urgent need for novel generic pharmacological strategies that reduce both viral replication and inflammation of the lung. We have previously investigated the therapeutic efficacy of recombinant human catalase (rhCAT) against viral pneumonia in mice, but the protection mechanisms involved were not explored. In the present study, we have performed a more in-depth analysis covering survival, lung inflammation, immune cell responses, production of cytokines, and inflammation signaling pathways in mice. Male imprinting control region mice were infected intranasally with high pathogenicity (H1N1) influenza A virus followed by treatment with recombinant human catalase. The administration of rhCAT resulted in a significant reduction in inflammatory cell infiltration (e.g., macrophages and neutrophils), inflammatory cytokine levels (e.g., IL-2, IL-6, TNF-α, IFN-γ), the level of the intercellular adhesion molecule 1 chemokine and the mRNA levels of toll-like receptors TLR-4, TLR-7, and NF-κB, as well as partially maintaining the activity of the antioxidant enzymes system. These findings indicated that rhCAT might play a key protective role in viral pneumonia of mice via suppression of inflammatory immune responses.
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Affiliation(s)
- Xunlong Shi
- Department of Drug Biosynthesis, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai, 201203 China
| | - Zhihui Shi
- Department of Drug Biosynthesis, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai, 201203 China
| | - Hai Huang
- Department of Drug Biosynthesis, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai, 201203 China
| | - Hongguang Zhu
- Department of Drug Biosynthesis, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai, 201203 China
| | - Pei Zhou
- Department of Drug Biosynthesis, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai, 201203 China
| | - Haiyan Zhu
- Department of Drug Biosynthesis, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai, 201203 China
| | - Dianwen Ju
- Department of Drug Biosynthesis, School of Pharmacy, Fudan University, 826 Zhang Heng Road, Shanghai, 201203 China
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172
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Cary TL, Ortiz-Santaliestra ME, Karasov WH. Immunomodulation in post-metamorphic northern leopard frogs, Lithobates pipiens, following larval exposure to polybrominated diphenyl ether. Environ Sci Technol 2014; 48:5910-5919. [PMID: 24735054 DOI: 10.1021/es405776m] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Pollutants and disease are factors implicated in amphibian population declines, and it is hypothesized that these factors exert a synergistic adverse effect, which is mediated by pollutant-induced immunosuppression. Polybrominated diphenyl ethers (PBDEs) are ubiquitous pollutants that can exert immunotoxicity, making them of interest to test effects on amphibian immune function. We orally exposed Lithobates (Rana) pipiens tadpoles to environmentally realistic levels (0-634 ng/g wet diet) of a pentabromodiphenyl ether mixture (DE-71) from as soon as they became free-swimming through metamorphic climax. To assess adaptive immune response in juvenile frogs, we used an enzyme-linked immunosorbent assay to measure specific IgY production following immunization with keyhole limpet hemocyanin (KLH). Specific KLH antibody response was significantly decreased in juvenile frogs that had been exposed to PBDEs as tadpoles. When assessing innate immune responses, we found significantly different neutrophil counts among treatments; however, phagocytic activity of neutrophils was not significantly different. Secretion of antimicrobial skin peptides (AMPs) nonsignificantly decreased with increasing PBDE concentrations, and no significant effect of PBDE treatment was observed on efficacy of AMPs to inhibit chytrid fungus (Batrachochytrium dendrobatidis) growth. Our findings demonstrate that environmentally realistic concentrations of PBDEs are able to alter immune function in frogs; however, further research is needed to determine how these alterations impact disease susceptibility in L. pipiens.
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Affiliation(s)
- Tawnya L Cary
- Department of Zoology and ‡Department of Forest & Wildlife Ecology, University of Wisconsin , Madison, Wisconsin 53706, United States
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Abstract
Due to their unique properties, nano-sized carbon materials are predicted to have numerous applications in industry, but significant evidence exists to suggest their potential to cause toxicity. To determine if pre-exposure to side-stream cigarette smoke (SSCS) influences their toxicity, we examined the pulmonary response of smoke-exposed mice to multi-walled carbon nanotubes (MWCNT). Female A/J mice were exposed to SSCS in a whole body exposure chamber at approximately 40 mg/m(3) for 4 weeks (6 h/d, 5 d/wk) and challenged with a single dose of MWCNT (40 µg) by the pharyngeal aspiration technique. A total of four groups were compared: air/phosphate buffered saline (PBS)-control, SSCS/PBS, air/MWCNT, and SSCS/MWCNT. At days 1 and 3 post-MWCNT treatment, lung tissues and bronchoalveolar lavage fluid (BALF) were collected and analyzed. In comparison with controls, significantly higher levels of total BAL cells were obtained from mice exposed to SSCS and MWCNT alone or combination. Influx of polymorphonuclear leukocytes (PMN) into BALF greatly increased in MWCNT alone and SSCS/MWCNT groups at both days 1 and 3 compared with controls. However, pre-exposure to SSCS significantly suppressed PMN response to MWCNT on day 1 but not day 3. Total BALF protein, lactate dehydrogenase, and mucin were significantly elevated in MWCNT and SSCS/MWCNT groups but not in the SSCS group, except mucin at day 3, when compared with controls. These results demonstrate that MWCNT markedly increases pulmonary toxicity in mice and SSCS pre-exposure plays a minor role in modulating MWCNT-induced lung toxicity at the concentrations and time points selected in the present study.
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Affiliation(s)
- Sung Gu Han
- Toxicology and Food Biomedical Science Laboratory, Department of Food Science and Biotechnology of Animal Resources, College of Animal Bioscience and Technology, Konkuk University , Seoul , Republic of Korea
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174
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Chen H, Assmann JC, Krenz A, Rahman M, Grimm M, Karsten CM, Köhl J, Offermanns S, Wettschureck N, Schwaninger M. Hydroxycarboxylic acid receptor 2 mediates dimethyl fumarate's protective effect in EAE. J Clin Invest 2014; 124:2188-92. [PMID: 24691444 DOI: 10.1172/jci72151] [Citation(s) in RCA: 221] [Impact Index Per Article: 22.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2013] [Accepted: 01/30/2014] [Indexed: 01/09/2023] Open
Abstract
Taken orally, the drug dimethyl fumarate (DMF) has been shown to improve functional outcomes for patients with MS; however, it is unclear how DMF mediates a protective effect. DMF and, more so, its active metabolite, monomethyl fumarate, are known agonists of the hydroxycarboxylic acid receptor 2 (HCA₂), a G protein-coupled membrane receptor. Here, we evaluated the contribution of HCA₂ in mediating the protective effect afforded by DMF in EAE, a mouse model of MS. DMF treatment reduced neurological deficit, immune cell infiltration, and demyelination of the spinal cords in wild-type mice, but not in Hca2⁻/⁻ mice, indicating that HCA₂ is required for the therapeutic effect of DMF. In particular, DMF decreased the number of infiltrating neutrophils in a HCA₂-dependent manner, likely by interfering with neutrophil adhesion to endothelial cells and chemotaxis. Together, our data indicate that HCA₂ mediates the therapeutic effects of DMF in EAE. Furthermore, identification of HCA₂ as a molecular target may help to optimize MS therapy.
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MESH Headings
- Animals
- Cell Adhesion/drug effects
- Cell Adhesion/genetics
- Dimethyl Fumarate
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/genetics
- Encephalomyelitis, Autoimmune, Experimental/metabolism
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Female
- Fumarates/pharmacology
- Humans
- Immunosuppressive Agents/pharmacology
- Mice
- Mice, Knockout
- Multiple Sclerosis/drug therapy
- Multiple Sclerosis/genetics
- Multiple Sclerosis/metabolism
- Multiple Sclerosis/pathology
- Neutrophil Infiltration/drug effects
- Neutrophils/metabolism
- Neutrophils/pathology
- Receptors, G-Protein-Coupled/genetics
- Receptors, G-Protein-Coupled/metabolism
- Receptors, Nicotinic/genetics
- Receptors, Nicotinic/metabolism
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175
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Kim J, Woo J, Lyu JH, Song HH, Jeong HS, Ha KT, Choi JY, Han CW, Ahn KS, Oh SR, Sadikot RT, Kim KH, Joo M. Carthami Flos suppresses neutrophilic lung inflammation in mice, for which nuclear factor-erythroid 2-related factor-1 is required. Phytomedicine 2014; 21:470-478. [PMID: 24252335 DOI: 10.1016/j.phymed.2013.10.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2013] [Revised: 09/03/2013] [Accepted: 10/06/2013] [Indexed: 06/02/2023]
Abstract
Carthami Flos (CF) is used in traditional Asian medicine to treat blood stagnation and its associated diseases in patients. While the underlying mechanism for this effect remains unknown, CF has been reported to activate Nrf2, a transcription factor that is critical in protecting from various inflammatory lung diseases including acute lung injury (ALI). Here, we examined whether CF has a therapeutic effect on lung inflammation and assessed the impact of Nrf2 on the effect of CF using an ALI mouse model. Treatment of bone marrow derived macrophages with standardized aqueous extract of CF (AECF) activated Nrf2, resulting in the expression of Nrf2 dependent genes including GCLC, NQO-1 and HO-1. While intranasal LPS treatment of wild type mice resulted in neutrophilic infiltration and a concomitant expression of pro-inflammatory cytokine genes in the lung, the hallmarks of ALI, an intratracheal spraying of AECF to the lung 2h after LPS treatment suppressed the inflammatory response. By contrast, similar treatment in nrf2(-/-) mice with AECF failed to attenuate the inflammatory response. Thus, our results show that AECF attenuated neutrophilic lung inflammation in mice, which required Nrf2. Since AECF administration abrogates lung inflammation after LPS treatment, we propose CF as a potential therapeutics in the management of ALI.
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Affiliation(s)
- Jeehye Kim
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Juyoun Woo
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Ji Hyo Lyu
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Hyuk-Hwan Song
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Chung-buk 33-883, Republic of Korea
| | - Han-Sol Jeong
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Ki-Tae Ha
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Jun-Yong Choi
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea; Korean Medicine Hospital, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Chang Woo Han
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea; Korean Medicine Hospital, Pusan National University, Yangsan 626-870, Republic of Korea
| | - Kyung-Seop Ahn
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Chung-buk 33-883, Republic of Korea
| | - Sei-Ryang Oh
- Natural Medicine Research Center, Korea Research Institute of Bioscience and Biotechnology, Ochang, Chung-buk 33-883, Republic of Korea
| | - Ruxana T Sadikot
- Division of Allergy, Pulmonary, Critical Care and Sleep Medicine, College of Medicine, University of Florida, United States; Malcom Randall VAMC, Gainesville, FL 32610, United States
| | - Kyun Ha Kim
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea; Institute of Korean Medical Sciences, Pusan National University, Yangsan 626-870, Republic of Korea.
| | - Myungsoo Joo
- School of Korean Medicine, Pusan National University, Yangsan 626-870, Republic of Korea.
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176
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Wu C, Chen Q, Fang Y, Wu J, Han Y, Wang Y, Yang Y, Chu M, Feng Y, Tan L, Guo X, Hu W, Wang Z. Schistosoma japonicum egg specific protein SjE16.7 recruits neutrophils and induces inflammatory hepatic granuloma initiation. PLoS Negl Trop Dis 2014; 8:e2703. [PMID: 24551263 PMCID: PMC3923719 DOI: 10.1371/journal.pntd.0002703] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2013] [Accepted: 01/06/2014] [Indexed: 11/19/2022] Open
Abstract
Neutrophils are known to play a major role in the egg granulomatous lesions caused by Schistosoma japonicum, but the precise mechanism by which eggs recruit or active neutrophil is unknown. Here we report S. japonicum egg specific EF-hand protein-SjE16.7 is a potent neutrophil recruiter and initiates the egg associated inflammatory granuloma in schistosomiasis. We show that the expression of SjE16.7 at level of both mRNA and protein is restricted to the egg stage. It locates in the miracidium and subshell area of the egg and can be secreted by the egg. The antigenic properties of SjE16.7 strongly suggest a role for SjE16.7 as an egg-derived molecule involved in host-parasite interactions. To study SjE16.7 functions in vivo, we challenged murine air pouch with recombinant SjE16.7. The results showed SjE16.7 trigged more inflammatory cell infiltration than vehicle or control protein. Using peritoneal exudate neutrophils from mice, we found that SjE16.7 significantly induced neutrophil chemotaxis in vitro, and the observed phenotypes were associated with enhanced Rac GTPase activation in SjE16.7 treated cells. Finally, in vivo hepatic granuloma formation model showed SjE16.7 coupled beads recruited more inflammatory cell infiltration than control beads. Our findings suggest SjE16.7 is an important pathogenic factor derived from egg. By recruiting neutrophils and inducing local inflammation, SjE16.7 facilitates eggs to be excreted through gut tissues and also initiates pathology in the liver; therefore SjE16.7 is a possible target for the prevention and treatment of schistosomiasis. As a neglected disease, schistosomiasis continues to be a significant cause of parasitic morbidity and mortality worldwide. Schistosoma japonicum is one of the major causative agents of human schistosomiasis. Trapped in the liver or intestinal tissue, S. japonicum eggs are the main cause of pathology following infection. They induce vigorous immune responses from the host, which facilitate the passage of the eggs from the tissue to the gut lumen and cause the pathology in liver. In this paper, we described, for the first time, S. japonicum egg specific EF-hand protein-SjE16.7 is a potent neutrophil recruiter and initiates the egg associated inflammatory granuloma in schistosomiasis. This study presents a precise mechanism by which eggs recruit neutrophil and induce inflammatory response. It furthers our understanding of the immunopathogenesis of human schistosomiasis. In addition, it provides a potential target for the prevention and treatment of this globally important parasite.
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Affiliation(s)
- Chenyun Wu
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Qing Chen
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Fang
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jianhua Wu
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yanyan Han
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences of Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ying Wang
- Institute of Health Sciences, Shanghai Institutes for Biological Sciences of Chinese Academy of Sciences/Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yang Yang
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min Chu
- The Ninth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yan Feng
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Linping Tan
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiaokui Guo
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Wei Hu
- Department of Microbiology and Microbial Engineering, School of Life Science, Fudan University, Shanghai, China
| | - Zhaojun Wang
- Department of Microbiology and Parasitology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- * E-mail:
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177
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Sereti I, Estes JD, Thompson WL, Morcock DR, Fischl MA, Croughs T, Beq S, Lafaye de Micheaux S, Yao MD, Ober A, Wilson EMP, Natarajan V, Imamichi H, Boulassel MR, Lederman MM, Routy JP. Decreases in colonic and systemic inflammation in chronic HIV infection after IL-7 administration. PLoS Pathog 2014; 10:e1003890. [PMID: 24497828 PMCID: PMC3907377 DOI: 10.1371/journal.ppat.1003890] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2013] [Accepted: 12/04/2013] [Indexed: 12/12/2022] Open
Abstract
Despite antiretroviral therapy (ART), some HIV-infected persons maintain lower than normal CD4+ T-cell counts in peripheral blood and in the gut mucosa. This incomplete immune restoration is associated with higher levels of immune activation manifested by high systemic levels of biomarkers, including sCD14 and D-dimer, that are independent predictors of morbidity and mortality in HIV infection. In this 12-week, single-arm, open-label study, we tested the efficacy of IL-7 adjunctive therapy on T-cell reconstitution in peripheral blood and gut mucosa in 23 ART suppressed HIV-infected patients with incomplete CD4+ T-cell recovery, using one cycle (consisting of three subcutaneous injections) of recombinant human IL-7 (r-hIL-7) at 20 µg/kg. IL-7 administration led to increases of both CD4+ and CD8+ T-cells in peripheral blood, and importantly an expansion of T-cells expressing the gut homing integrin α4β7. Participants who underwent rectosigmoid biopsies at study baseline and after treatment had T-cell increases in the gut mucosa measured by both flow cytometry and immunohistochemistry. IL-7 therapy also resulted in apparent improvement in gut barrier integrity as measured by decreased neutrophil infiltration in the rectosigmoid lamina propria 12 weeks after IL-7 administration. This was also accompanied by decreased TNF and increased FOXP3 expression in the lamina propria. Plasma levels of sCD14 and D-dimer, indicative of systemic inflammation, decreased after r-hIL-7. Increases of colonic mucosal T-cells correlated strongly with the decreased systemic levels of sCD14, the LPS coreceptor - a marker of monocyte activation. Furthermore, the proportion of inflammatory monocytes expressing CCR2 was decreased, as was the basal IL-1β production of peripheral blood monocytes. These data suggest that administration of r-hIL-7 improves the gut mucosal abnormalities of chronic HIV infection and attenuates the systemic inflammatory and coagulation abnormalities that have been linked to it. HIV infected people who receive antiretroviral therapy (ART) remain at higher risk of non-infectious complications such as cardiovascular disease. This risk is linked to persistent inflammation and immune activation and is higher in those with lower circulating CD4+ T-cell counts. IL-7 therapy can increase CD4+ and CD8+ T-cell counts in peripheral blood, but its effects on gut mucosal T cell restoration was unknown. We gave 3 doses of interleukin (IL)-7 to HIV+ persons receiving ART and performed gut biopsies before and after therapy. IL-7 therapy increased T-cell numbers in the periphery including T-cells that express the α4β7 integrin, a molecule that promotes trafficking to the gut. Gut mucosa studies showed significant increases of T-cells and significant decreases in local inflammation as reflected by expression of myeloperoxidase and tumor necrosis factor. In addition, plasma levels of inflammatory markers that are linked to mortality in HIV infection decreased significantly as did some inflammatory monocyte markers. We conclude that IL-7 administration can improve gut mucosal abnormalities in chronic treated HIV infection and as a result, also may decrease both gut and systemic inflammation.
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Affiliation(s)
- Irini Sereti
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
- * E-mail:
| | - Jacob D. Estes
- Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc, Frederick, Maryland, United States of America
| | - William L. Thompson
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - David R. Morcock
- Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc, Frederick, Maryland, United States of America
| | - Margaret A. Fischl
- University of Miami School of Medicine, Miami, Florida, United States of America
| | | | | | | | - Michael D. Yao
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Alexander Ober
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Eleanor M. P. Wilson
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
| | - Ven Natarajan
- Frederick National Laboratory for Cancer Research, Leidos Biomedical Research, Inc, Frederick, Maryland, United States of America
| | - Hiromi Imamichi
- National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, Maryland, United States of America
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178
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Sargent LM, Porter DW, Staska LM, Hubbs AF, Lowry DT, Battelli L, Siegrist KJ, Kashon ML, Mercer RR, Bauer AK, Chen BT, Salisbury JL, Frazer D, McKinney W, Andrew M, Tsuruoka S, Endo M, Fluharty KL, Castranova V, Reynolds SH. Promotion of lung adenocarcinoma following inhalation exposure to multi-walled carbon nanotubes. Part Fibre Toxicol 2014; 11:3. [PMID: 24405760 PMCID: PMC3895742 DOI: 10.1186/1743-8977-11-3] [Citation(s) in RCA: 172] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 11/06/2013] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND Engineered carbon nanotubes are currently used in many consumer and industrial products such as paints, sunscreens, cosmetics, toiletries, electronic processes and industrial lubricants. Carbon nanotubes are among the more widely used nanoparticles and come in two major commercial forms, single-walled carbon nanotubes (SWCNT) and the more rigid, multi-walled carbon nanotubes (MWCNT). The low density and small size of these particles makes respiratory exposures likely. Many of the potential health hazards have not been investigated, including their potential for carcinogenicity. We, therefore, utilized a two stage initiation/promotion protocol to determine whether inhaled MWCNT act as a complete carcinogen and/or promote the growth of cells with existing DNA damage. Six week old, male, B6C3F1 mice received a single intraperitoneal (ip) injection of either the initiator methylcholanthrene(MCA, 10 μg/g BW, i.p.), or vehicle (corn oil). One week after i.p. injections, mice were exposed by inhalation to MWCNT (5 mg/m³, 5 hours/day, 5 days/week) or filtered air (controls) for a total of 15 days. At 17 months post-exposure, mice were euthanized and examined for lung tumor formation. RESULTS Twenty-three percent of the filtered air controls, 26.5% of the MWCNT-exposed, and 51.9% of the MCA-exposed mice, had lung bronchiolo-alveolar adenomas and lung adenocarcinomas. The average number of tumors per mouse was 0.25, 0.81 and 0.38 respectively. By contrast, 90.5% of the mice which received MCA followed by MWCNT had bronchiolo-alveolar adenomas and adenocarcinomas with an average of 2.9 tumors per mouse 17 months after exposure. Indeed, 62% of the mice exposed to MCA followed by MWCNT had bronchiolo-alveolar adenocarcinomas compared to 13% of the mice that received filtered air, 22% of the MCA-exposed, or 14% of the MWCNT-exposed. Mice with early morbidity resulting in euthanasia had the highest rate of metastatic disease. Three mice exposed to both MCA and MWCNT that were euthanized early had lung adenocarcinoma with evidence of metastasis (5.5%). Five mice (9%) exposed to MCA and MWCNT and 1 (1.6%) exposed to MCA developed serosal tumors morphologically consistent with sarcomatous mesotheliomas, whereas mice administered MWCNT or air alone did not develop similar neoplasms. CONCLUSIONS These data demonstrate that some MWCNT exposures promote the growth and neoplastic progression of initiated lung cells in B6C3F1 mice. In this study, the mouse MWCNT lung burden of 31.2 μg/mouse approximates feasible human occupational exposures. Therefore, the results of this study indicate that caution should be used to limit human exposures to MWCNT.
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Affiliation(s)
- Linda M Sargent
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Dale W Porter
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | - Ann F Hubbs
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - David T Lowry
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Lori Battelli
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Katelyn J Siegrist
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Michael L Kashon
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Robert R Mercer
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | - Bean T Chen
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | - David Frazer
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Walter McKinney
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Michael Andrew
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | | | | | - Kara L Fluharty
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Vince Castranova
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
| | - Steven H Reynolds
- National Institute for Occupational Safety and Health, 1095 Willowdale Road, Mailstop L-3014, Morgantown, WV 26505, USA
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179
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Artemova LV, Kuz'mina LP, Sorkina NS, Komarova SG, Petrykina MV, Pomykanova IS. [Topical aspects of contemporary forms of occupational bronchial asthma]. Med Tr Prom Ekol 2014:19-24. [PMID: 25282797] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Occupational bronchial asthma is a variable, heterogenious disease. Occupational factors are triggers and inductors of the pathologic process, cause formation of various clinical phenotypes of asthma, on background of genetic predisposition, changed metabolic adaptation, energetic systems, neuro-humoral regulation, immune state.
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180
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Dolganova OM, Rudina MI, Khrapova MV, Dushkin MI. [Influence of cholesterol on macrophage foam cells formation at zymosan-induced inflammation of mice]. Tsitologiia 2014; 56:132-141. [PMID: 25509153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
It has been shown recently that significant number (to 40% from total population) of macrophage foam cells (MFC) is formed during early time (24 h) of zymosan-induced peritonitis resolution and agonists of peroxisome proliferation activated receptors-α, -γ (PPAR-α, -γ) exert anti-inflammatory action, protecting their formation (Dushkin et al., 2007). The work is devoted to investigate of the influence of cholesterol-containing liposomes (CHL) on dinamic of zimozan-induced peritonitis in C57Bl/6 mice. The accumulation of cholesterol, the change of cytokine production, PPAR-γ activity and cholesterol efflux in macrophages of C57Bl/6 mice has been investigated. The infiltration of neutrophils, amounts of mononuclear cells and MFC formation were significantly increased in peritonel cavity of zymosan-induced mice that led to in expansion of the period of inflammatory resolution and of the period of MFC resolution. If macrophages obtained after zymosan injection mainly accumulated triglycerides (TG) and at high speed incorporated [1-14C]oleate into TG, the injection of CHL after zymosan-indused inflammation lead to dramatic promotion MFC containing primarily free cholesterol and Ch ethers and been aggravation of [1-14C]oleate incorporation into cholesterol ethers in macrophages (mainly for 2 days). It has to shown that CHL against a background of inflammation promoted reduction of fluorescent NBD-cholesterol efflux from macrophages throughout the studied period (5 days) whereas zymosan inhibited cholesterol efflux at the early stages of inflammation (1 and 2 days), then, on 3ed day, the cholesterol efflux was recovered and increased on day 5. At the same time CHL stimulated the production of TNFα and TGFβ and inhibited the production of IL-10 and DNA-binding activity of PPAR-γ macrophages obtained at early as well as late stages of zymosan-induced peritonitis (compared with injection zymosan only). Thus, accumulation of cholesterol in inflammatory macrophages and promotion of MFC formation prolog timely resoluti- on of acute inflammation inducing alteration of pro- and anti-inflammatory cytokine balance and evoking the repression of macrophage DNA-binding activity of PPAR-γ and cholesterol efflux.
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181
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Ciobanu L, Taulescu M, Prundus R, Diaconu B, Andreica V, Catoi C, Pascu O, Tantau M. Effects of rifaximin on indomethacin-induced intestinal damage in guinea-pigs. Eur Rev Med Pharmacol Sci 2014; 18:344-351. [PMID: 24563433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
AIM Enterobacterial translocation into the gut mucosa is the first step required for activation of neutrophils and inducible nitric oxide synthase (iNOS), involved in the pathogenesis of indomethacin-induced intestinal lesions. Rifaximin may limit NSAID-associated intestinal damage by decreasing the bacterial load. We aimed to study the effect of rifaximin on indomethacin-induced intestinal damage in guinea-pigs. MATERIALS AND METHODS Twenty-four guinea pigs, equally divided in four interventional groups (A-D), received indomethacin, given orally once daily (30 mg/kg) for three consecutive days. In groups B, C, D different doses of rifaximin (50 mg/kg, 100 mg/kg and 200 mg/kg) were given orally two hours before indometachin administration. Semi-quantitative grades were measure for gross findings, degenerative lesions, neutrophils and eosinophils infiltrates and iNOS immunopositivity. Statistical comparisons used Mann Whitney Test, with a Bonferroni correction for alpha (p ≤ 0.016). RESULTS Statistical analysis of graded gross findings, microscopic degenerative lesions, endothelium damage and iNOS immunopositivity found no difference between A and B groups. Significant fewer gross findings (U = 3, p = 0.015), microscopic degenerative lesions (U = 2, p = 0.008) and lower grades for iNOS immunopositivity (U = 0, p = 0.002) were found in group C compared with group A. In group D, significant lower grades for iNOS immunopositivity were obtained (U = 0, p = 0.002) compared with group A and fewer degenerative lesions without reaching statistical significance (U = 4, p = 0.026). CONCLUSIONS 100 mg/kg of rifaximin proved efficient in preventing gut degenerative lesions induced by indomethacin in a guinea pig model, the iNOS activity being significantly decreased.
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Affiliation(s)
- L Ciobanu
- Regional Institute of Gastroenterology and Hepatology, University of Medicine and Pharmacy Iuliu Hatieganu, Cluj-Napoca, Romania.
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182
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Chen HY, Li L, Fu ZJ. Histone deacetylase inhibitors trichostatin A and suberoylanilide hydroxamic acid attenuate ventilator-induced lung injury. Pharmazie 2014; 69:55-59. [PMID: 24601225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The pathophysiology of ventilator-induced lung injury (VILI) involves multiple mechanisms including inflammation. Histone deacetylase inhibitors have been shown to exert anti-inflammation activity. The purpose of this study was to examine the protecting roles and mechanisms of the histone deacetylase inhibitors trichostatin A (TSA) and suberoylanilide hydroxamic acid (SAHA) in ventilator-induced lung injury in normal rat lung. Male Sprague-Dawley rats were divided into four groups: lung-protective ventilation (LV), injurious ventilation (HV), HV+TSA and HV+ SAHA groups. Mechanical ventilation (MV) settings were 7 ml/kg VT and 3cm H2O positive end-expiratorypressure [PEEP], 40 breaths/min for LV group and 42 ml/kg VT, zero end-expiratoryvolume [ZEEP], 40 breaths/min for the HV, HV+TSA and HV+ SAHA groups. After 2 h of MV, acute lung injury (ALI) score, wet-to-dry (W/D) weight ratio and the activity of myeloperoxidase (MPO) were determined. The concentration of tumor necrosis factor-alpha (TNF-alpha), interleukin-1beta (IL-1beta) and interleukin-10 (IL-6) in the homogenized lung were measured by ELISA. The expression ICAM-1 was measured by both realtime PCR and Western blot assays. In addition, survival of each group was also assessed. Our results indicated that administration of TSA or SAHA alleviated ventilator-induced lung injury. This was accompanied by reduced neutrophil infiltration, reduced MPO activity, decreased intercellular adhesion molecule-1 (ICAM-1) expression in lung tissue, and lower TNF-alpha, IL-1beta and IL-6 levels. In addition, treatment with HDAC inhibitors significantly prolonged the survival time of ventilator-induced lung injury rats. Our data suggested that TSA and SAHA could significantly alleviate ventilator-induced rat lung injury and prolong the survival time of those rats by attenuate intrapulmonary inflammatory response.
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Affiliation(s)
- Hua-Yong Chen
- Department of Pain Management, Shandong Provincial Hospital, Shandong University, Ji'nan, P.R. China.
| | - Li Li
- Department of Anesthesiology, Qingzhou People's Hospital, Qingzhou, P.R. China
| | - Zhi-Jian Fu
- Department of Pain Management, Shandong Provincial Hospital, Shandong University, Ji'nan, P.R. China
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Fakhari S, Abdolmohammadi K, Panahi Y, Nikkhoo B, Peirmohammadi H, Rahmani MR, Moghadam AS, Jalili A. Glycyrrhizin attenuates tissue injury and reduces neutrophil accumulation in experimental acute pancreatitis. Int J Clin Exp Pathol 2013; 7:101-109. [PMID: 24427330 PMCID: PMC3885464] [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] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 11/19/2013] [Indexed: 06/03/2023]
Abstract
Leukocyte infiltration and acinar cell injury are characteristic features of acute pancreatitis (AP). However, the signaling pathways regulating inflammation and accumulation of leukocytes into pancreas tissue remains poorly elucidated. In the current study, we investigated the effects of Glycyrrhizin (GZ) on cerulein-induced AP in mice. AP was induced in male C57BL/6 by intraperitoneal injection of 50 μg/kg cerulein hourly, with a total of 7 times. 1 hour after the last injection of cerulean, mice were treated with either 35 or 70 mg/kg of GZ. Serum amylases and lipases were measured using automated chromogenic assay, MCP-1 and MIP-2 concentrations were measured in the serum by ELISA, and the number of infiltrated inflammatory cells in the pancreas were evaluated by flow cytometry. We found that GZ treatment resulted in reduction (i) both amylase and lipase activities, (ii) the serum levels of both MCP-1 and MIP-2; and (iii) markedly attenuated cerulein-induced histopathological alternations and water contents. Furthermore, we observed that GZ significantly decreased the number of infiltrated monocytes and neutrophils into the pancreas tissue. In conclusion, we demonstrate that GZ attenuates AP signs and inhibits inflammatory cell recruitments into pancreas.
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Affiliation(s)
- Shohreh Fakhari
- Kurdistan Cellular & Molecular Research Center, Kurdistan University of Medical SciencesSanandaj, Iran
| | - Kamal Abdolmohammadi
- Department of Immunology & Hematology, Faculty of Medicine, Kurdistan University of Medical SciencesSanandaj, Iran
| | - Yaser Panahi
- Department of Immunology & Hematology, Faculty of Medicine, Kurdistan University of Medical SciencesSanandaj, Iran
| | - Bahram Nikkhoo
- Kurdistan Cellular & Molecular Research Center, Kurdistan University of Medical SciencesSanandaj, Iran
| | - Hossein Peirmohammadi
- Kurdistan Cellular & Molecular Research Center, Kurdistan University of Medical SciencesSanandaj, Iran
| | - Mohammad Reza Rahmani
- Department of Immunology & Hematology, Faculty of Medicine, Kurdistan University of Medical SciencesSanandaj, Iran
| | | | - Ali Jalili
- Kurdistan Cellular & Molecular Research Center, Kurdistan University of Medical SciencesSanandaj, Iran
- Department of Immunology & Hematology, Faculty of Medicine, Kurdistan University of Medical SciencesSanandaj, Iran
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Bindu S, Mazumder S, Dey S, Pal C, Goyal M, Alam A, Iqbal MS, Sarkar S, Azhar Siddiqui A, Banerjee C, Bandyopadhyay U. Nonsteroidal anti-inflammatory drug induces proinflammatory damage in gastric mucosa through NF-κB activation and neutrophil infiltration: anti-inflammatory role of heme oxygenase-1 against nonsteroidal anti-inflammatory drug. Free Radic Biol Med 2013; 65:456-467. [PMID: 23892052 DOI: 10.1016/j.freeradbiomed.2013.07.027] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2013] [Revised: 06/26/2013] [Accepted: 07/19/2013] [Indexed: 12/24/2022]
Abstract
Nonsteroidal anti-inflammatory drug (NSAID)-induced mitochondrial oxidative stress (MOS) is an important prostaglandin (PG)-independent pathway of the induction of gastric mucosal injury. However, the molecular mechanism behind MOS-mediated gastric pathology is still obscure. In various pathological conditions of tissue injury oxidative stress is often linked with inflammation. Here we report that MOS induced by indomethacin (an NSAID) induces gastric mucosal inflammation leading to proinflammatory damage. Indomethacin, time dependently stimulated the expression of proinflammatory molecules such as intercellular adhesion molecule 1(ICAM-1), vascular cell adhesion molecule 1(VCAM-1), interleukin1β (IL-1β), and monocyte chemotactic protein-1 (MCP-1) in gastric mucosa in parallel with the increase of neutrophil infiltration and injury of gastric mucosa in rat. Western immunoblotting and confocal microscopic studies revealed that indomethacin induced nuclear translocation of nuclear factor kappa-B (NF-κB) in gastric mucosal cells, which resulted in proinflammatory signaling. The prevention of MOS by antioxidant tryptamine-gallic acid hybrid (SEGA) inhibited indomethacin-induced expression of ICAM-1, VCAM-1, IL-1β, and MCP-1. SEGA also prevented indomethacin-induced NF-κB activation and neutrophil infiltration as documented by chromatin immunoprecipitation studies and neutrophil migration assay, respectively. Heme oxygenase-1 (HO-1), a cytoprotective enzyme associated with tissue repair mechanisms is stimulated in response to oxidative stress. We have investigated the role of HO-1 against MOS and MOS-mediated inflammation in recovering from gastropathy. Indomethacin stimulated the expression of HO-1 and indomethacin-stimulated HO-1 expression was reduced by SEGA, an antioxidant, which could prevent MOS. Thus, the data suggested that the induction of HO-1 was a protective response against MOS developed by indomethacin. Moreover, the induction of HO-1 by cobalt protoporphyrin inhibited inflammation and chemical silencing of HO-1 by zinc protoporphyrin aggravated the inflammation by indomethacin. Thus, NSAID by promoting MOS-induced proinflammatory response damaged gastric mucosa and HO-1 protected NSAID-induced gastric mucosal damage by preventing NF-κB activation and proinflammatory activity.
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Affiliation(s)
- Samik Bindu
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Somnath Mazumder
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Sumanta Dey
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Chinmay Pal
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Manish Goyal
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Athar Alam
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Mohd Shameel Iqbal
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Souvik Sarkar
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Asim Azhar Siddiqui
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Chinmoy Banerjee
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India
| | - Uday Bandyopadhyay
- Department of Infectious Diseases and Immunology, CSIR-Indian Institute of Chemical Biology, 4 Raja S. C. Mullick Road, Jadavpur, Kolkata 700032, West Bengal, India.
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Pachel C, Mathes D, Bayer B, Dienesch C, Wangorsch G, Heitzmann W, Lang I, Ardehali H, Ertl G, Dandekar T, Wajant H, Frantz S. Exogenous administration of a recombinant variant of TWEAK impairs healing after myocardial infarction by aggravation of inflammation. PLoS One 2013; 8:e78938. [PMID: 24244389 PMCID: PMC3823964 DOI: 10.1371/journal.pone.0078938] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Accepted: 09/25/2013] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND Tumor necrosis factor-like weak inducer of apoptosis (TWEAK) and its receptor fibroblast growth factor-inducible 14 (Fn14) are upregulated after myocardial infarction (MI) in both humans and mice. They modulate inflammation and the extracellular matrix, and could therefore be important for healing and remodeling after MI. However, the function of TWEAK after MI remains poorly defined. METHODS AND RESULTS Following ligation of the left coronary artery, mice were injected twice per week with a recombinant human serum albumin conjugated variant of TWEAK (HSA-Flag-TWEAK), mimicking the activity of soluble TWEAK. Treatment with HSA-Flag-TWEAK resulted in significantly increased mortality in comparison to the placebo group due to myocardial rupture. Infarct size, extracellular matrix remodeling, and apoptosis rates were not different after MI. However, HSA-Flag-TWEAK treatment increased infiltration of proinflammatory cells into the myocardium. Accordingly, depletion of neutrophils prevented cardiac ruptures without modulating all-cause mortality. CONCLUSION Treatment of mice with HSA-Flag-TWEAK induces myocardial healing defects after experimental MI. This is mediated by an exaggerated neutrophil infiltration into the myocardium.
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Affiliation(s)
- Christina Pachel
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
| | - Denise Mathes
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
| | - Barbara Bayer
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
| | - Charlotte Dienesch
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
| | - Gaby Wangorsch
- Department of Bioinformatics, Biocenter, University of Würzburg, Würzburg, Germany
| | - Wolfram Heitzmann
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
| | - Isabell Lang
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Hossein Ardehali
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, Illinois, United States of America
| | - Georg Ertl
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
| | - Thomas Dandekar
- Department of Bioinformatics, Biocenter, University of Würzburg, Würzburg, Germany
| | - Harald Wajant
- Division of Molecular Internal Medicine, Department of Internal Medicine II, University Hospital Würzburg, Würzburg, Germany
| | - Stefan Frantz
- Department of Internal Medicine I, University Hospital Würzburg, Würzburg, Germany
- Comprehensive Heart Failure Center, University of Würzburg, Würzburg, Germany
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Zhao Q, Hu X, Shao L, Wu G, Du J, Xia J. LipoxinA4 attenuates myocardial ischemia reperfusion injury via a mechanism related to downregulation of GRP-78 and caspase-12 in rats. Heart Vessels 2013; 29:667-78. [PMID: 24129401 PMCID: PMC4160563 DOI: 10.1007/s00380-013-0418-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Accepted: 09/27/2013] [Indexed: 01/21/2023]
Abstract
This study aims to determine the effect of Lipoxin (LX)A4 on myocardial ischemia reperfusion injury (MIRI) in rats and the related molecular mechanisms. Male SD rats were divided into six groups. The sham operation groups (groups C1, C2) were injected with 2 ml/kg normal saline before and after coronary artery threading, respectively. The MIRI group (groups I/R1, I/R2) were injected with normal saline before and after MIRI, respectively. The LXA4 groups (groups LX1, LX2) were injected with LXA4 before and after MIRI treatment, respectively. The hematoxylin–eosin staining and ultrastructural changes of cardiac muscle were observed. The serum levels of interleukin (IL)-1β, IL-6, IL-10, tumor necrosis factor (TNF) α and cardiac troponin I (cTnI) were measured before open-chest operation and at the end of the experiment. The mRNA and protein levels of GRP-78 and caspase-12 were determined in each group. The myocardial cell apoptosis, myeloperoxidase (MPO), superoxide dismutase (SOD), and malondialdehyde (MDA) contents were detected. The mRNA and protein levels of GRP-78 and caspase-12, the apoptosis, the serum IL-1β, IL-6, IL-10, TNF-α, and cTnI concentrations, MPO, SOD, MDA contents were significantly increased in groups I/R1, I/R2, LX1, and LX2 compared with those in groups C1 and C2 (P < 0.05). The mRNA and protein expression levels of GRP-78 and caspase-12 in groups LX1 and LX2 were lower than those in groups I/R1 and I/R2. Compared with group I/R1 and I/R2, the myocardial neutrophil infiltration and ultrastructure damage were significantly less in groups LX1 and LX2. GRP-78 and IL-10 are expressed both extracellularly and intracellularly, but are mainly expressed in the cytoplasms. In the absence of MIRI, LXA4 has no detectable effect on GRP-78 and caspase-12 expression. Before and after MIRI, application of LXA4 significantly inhibits neutrophil activation, and attenuates myocardial inflammatory injury and oxidative stress. LXA4 downregulates the mRNA and protein expression of GRP-78 and caspase-12. LXA4 could play a role in myocardial protection via a mechanism related to downregulation of GRP-78 and caspase-12, and inhibition of apoptosis.
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Affiliation(s)
- Qifeng Zhao
- Department of Cardiovascular and Thoracic Surgery, The 2nd Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, 109 College Western Road, Wenzhou, 325027, People's Republic of China,
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187
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Santin JR, Daufenback Machado I, Rodrigues SFP, Teixeira S, Muscará MN, Lins Galdino S, da Rocha Pitta I, Farsky SHP. Role of an indole-thiazolidine molecule PPAR pan-agonist and COX inhibitor on inflammation and microcirculatory damage in acute gastric lesions. PLoS One 2013; 8:e76894. [PMID: 24124600 PMCID: PMC3790743 DOI: 10.1371/journal.pone.0076894] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2013] [Accepted: 08/27/2013] [Indexed: 01/26/2023] Open
Abstract
The present study aimed to show the in vivo mechanisms of action of an indole-thiazolidine molecule peroxisome-proliferator activated receptor pan-agonist (PPAR pan) and cyclooxygenase (COX) inhibitor, LYSO-7, in an ethanol/HCl-induced (Et/HCl) gastric lesion model. Swiss male mice were treated with vehicle, LYSO-7 or Bezafibrate (p.o.) 1 hour before oral administration of Et/HCl (60%/0.03M). In another set of assays, animals were injected i.p. with an anti-granulocyte antibody, GW9962 or L-NG-nitroarginine methyl ester (L-NAME) before treatment. One hour after Et/HCl administration, neutrophils were quantified in the blood and bone marrow and the gastric microcirculatory network was studied in situ. The gastric tissue was used to quantify the percentage of damaged area, as well as myeloperoxidase (MPO), inducible nitric oxide synthase (iNOS), endothelial nitric oxide synthase (eNOS) protein and PPARγ protein and gene expression. Acid secretion was evaluated by the pylorus ligation model. LYSO-7 or Bezafibrate treatment reduced the necrotic area. LYSO-7 treatment enhanced PPARγ gene and protein expression in the stomach, and impaired local neutrophil influx and stasis of the microcirculatory network caused by Et/HCl administration. The effect seemed to be due to PPARγ agonist activity, as the LYSO-7 effect was abolished in GW9962 pre-treated mice. The reversal of microcirculatory stasis, but not neutrophil influx, was mediated by nitric oxide (NO), as L-NAME pre-treatment abolished the LYSO-7-mediated reestablishment of microcirculatory blood flow. This effect may depend on enhanced eNOS protein expression in injured gastric tissue. The pH and concentration of H+ in the stomach were not modified by LYSO-7 treatment. In addition, LYSO-7 may induce less toxicity, as 28 days of oral treatment did not induce weight loss, as detected in pioglitazone treated mice. Thus, we show that LYSO-7 may be an effective treatment for gastric lesions by controlling neutrophil influx and microcirculatory blood flow mediated by NO.
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Affiliation(s)
- José Roberto Santin
- Laboratory of Experimental Toxicology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Isabel Daufenback Machado
- Laboratory of Experimental Toxicology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Stephen F. P. Rodrigues
- Laboratory of Experimental Toxicology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
| | - Simone Teixeira
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Marcelo N. Muscará
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
| | - Suely Lins Galdino
- Department of Chemistry, Federal University of Pernambuco, Pernabumbuco, Recife, Brazil
| | - Ivan da Rocha Pitta
- Department of Chemistry, Federal University of Pernambuco, Pernabumbuco, Recife, Brazil
| | - Sandra H. P. Farsky
- Laboratory of Experimental Toxicology, Department of Clinical and Toxicological Analyses, School of Pharmaceutical Sciences, University of Sao Paulo, Sao Paulo, Brazil
- * E-mail:
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Martinez RM, Zarpelon AC, Cardoso RDR, Vicentini FTMC, Georgetti SR, Baracat MM, Andrei CC, Moreira IC, Verri WA, Casagrande R. Tephrosia sinapou ethyl acetate extract inhibits inflammatory pain in mice: opioid receptor dependent inhibition of TNFα and IL-1β production. Pharm Biol 2013; 51:1262-1271. [PMID: 23855752 DOI: 10.3109/13880209.2013.786099] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
UNLABELLED CONTEXT. Tephrosia toxicaria is currently known as Tephrosia sinapou (Buc'hoz) A. Chev. (Fabaceae) and is a source of compounds such as flavonoids that inhibit inflammatory pain. OBJECTIVE To investigate the analgesic effect and mechanisms of the ethyl acetate extract of T. sinapou in inflammatory pain in mice. MATERIALS AND METHODS Behavioral responses were evaluated using mechanical (1-24 h) and thermal hyperalgesia (0.5-5 h), writhing response (20 min) and rota-rod (1-5 h) tests. Neutrophil recruitment (myeloperoxidase activity), cytokines (tumor necrosis factor [TNF]α and interleukin [IL]-1β), aspartate aminotransferase (AST) and alanine aminotransferase (ALT) serum levels were determined by colorimetric assays. Pharmacological treatments were opioid receptor antagonist (naloxone, 0.1-1 mg/kg) and control opioid (morphine, 5 mg/kg). Inflammatory stimuli were carrageenin (100 µg/paw), complete Freund's adjuvant (CFA, 10 µl/paw), prostaglandin E2 (PGE2, 100 ng/paw) and acetic acid (0.8%). RESULTS The intraperitoneal pre-treatment with extract inhibited in a dose-dependent (30-300 mg/kg) dependent manner the mechanical hyperalgesia induced by carrageenin (up to 93% inhibition). The post-treatment (100 mg/kg) inhibited CFA-induced hyperalgesia (up to 63% inhibition). Naloxone (1 mg/kg) prevented the inhibitory effect of the extract over carrageenin-induced mechanical (100%) and thermal (100%) hyperalgesia, neutrophil recruitment (52%) and TNFα (63%) and IL-1β (98%) production, thermal threshold in naïve mice (99%), PGE2-induced mechanical hyperalgesia (88%) and acetic acid-induced writhing response (49%). There was no significant alteration in the rota-rod test, and AST and ALT serum levels by extract treatment. Discussion and conclusion. Tephrosia sinapou ethyl acetate extract reduces inflammatory pain by activating an opioid receptor-dependent mechanism.
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Affiliation(s)
- Renata M Martinez
- Department of Pharmaceutical Sciences, University Hospital (Health Science Centre), Londrina State University, Parana, Brazil
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Verhein KC, Salituro FG, Ledeboer MW, Fryer AD, Jacoby DB. Dual p38/JNK mitogen activated protein kinase inhibitors prevent ozone-induced airway hyperreactivity in guinea pigs. PLoS One 2013; 8:e75351. [PMID: 24058677 PMCID: PMC3776780 DOI: 10.1371/journal.pone.0075351] [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] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2012] [Accepted: 08/16/2013] [Indexed: 12/28/2022] Open
Abstract
Ozone exposure causes airway hyperreactivity and increases hospitalizations resulting from pulmonary complications. Ozone reacts with the epithelial lining fluid and airway epithelium to produce reactive oxygen species and lipid peroxidation products, which then activate cell signaling pathways, including the mitogen activated protein kinase (MAPK) pathway. Both p38 and c-Jun NH2 terminal kinase (JNK) are MAPK family members that are activated by cellular stress and inflammation. To test the contribution of both p38 and JNK MAPK to ozone-induced airway hyperreactivity, guinea pigs were pretreated with dual p38 and JNK MAPK inhibitors (30 mg/kg, ip) 60 minutes before exposure to 2 ppm ozone or filtered air for 4 hours. One day later airway reactivity was measured in anesthetized animals. Ozone caused airway hyperreactivity one day post-exposure, and blocking p38 and JNK MAPK completely prevented ozone-induced airway hyperreactivity. Blocking p38 and JNK MAPK also suppressed parasympathetic nerve activity in air exposed animals, suggesting p38 and JNK MAPK contribute to acetylcholine release by airway parasympathetic nerves. Ozone inhibited neuronal M2 muscarinic receptors and blocking both p38 and JNK prevented M2 receptor dysfunction. Neutrophil influx into bronchoalveolar lavage was not affected by MAPK inhibitors. Thus p38 and JNK MAPK mediate ozone-induced airway hyperreactivity through multiple mechanisms including prevention of neuronal M2 receptor dysfunction.
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Affiliation(s)
- Kirsten C. Verhein
- Department of Physiology and Pharmacology, Oregon Health and Science University, Portland, Oregon, United States of America
- * E-mail:
| | | | - Mark W. Ledeboer
- Vertex Pharmaceuticals, Inc., Cambridge, Massachusetts, United States of America
| | - Allison D. Fryer
- Division of Pulmonary and Critical Care Medicine, Oregon Health and Science University, Portland, Oregon, United States of America
| | - David B. Jacoby
- Division of Pulmonary and Critical Care Medicine, Oregon Health and Science University, Portland, Oregon, United States of America
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Theobaldo MC, Llimona F, Petroni RC, Rios ECS, Velasco IT, Soriano FG. Hypertonic saline solution drives neutrophil from bystander organ to infectious site in polymicrobial sepsis: a cecal ligation and puncture model. PLoS One 2013; 8:e74369. [PMID: 24069301 PMCID: PMC3775765 DOI: 10.1371/journal.pone.0074369] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2012] [Accepted: 08/04/2013] [Indexed: 12/18/2022] Open
Abstract
The effects of hypertonic saline solution (HSS) have been shown in several animal models of ischemia and shock. Literature has shown potential benefits of HSS modulating inflammatory response after sepsis in an animal model. We studied the HSS effects in sepsis through cecal ligation and puncture (CLP) in Balb-C mice. Groups studied: 1- CLP without treatment (CLP-C); 2- CLP treated with normal saline solution NaCl 0.9% – 34 ml/Kg (CLP-S); 3- CLP treated with HSS NaCl 7.5% – 4 ml/Kg (CLP-H); and 4- group (Basal) without no CLP or treatment. Volume infusion was always applied 30 min after CLP. Lung and peritoneal lavage were harvested after 6h and 24h of CLP to analyze cytokines amount, oxide nitric, lipid peroxidation and neutrophil infiltration. Neutrophil infiltration, ICAM-1, CXCR-2, and CXCL-1 in lung were reduced by HSS (CLP-H) compared to CLP-C or CLP-S. Neutrophil in peritoneal lavage was increased in 24h with HSS (CLP-H) compared to CLP and CLP-S. Peritoneal CXCR-2 was increased in CLP-C and CLP-S but presented a lower increase with HSS (CLP-H) after 6 hours. GRK-2 presented difference among the groups at 24 h, showing a profile similar to neutrophil infiltration. Pro-inflammatory cytokines (TNF-α and IL-6) were reduced by HSS treatment; CLP-S increased TNF-α. IL-10 was increased in lung tissue by the HSS treatment. The oxidative stress (TBARS and nitric oxide biochemistry markers) was reduced with HSS. Animal survival was 33.3% in CLP-C group, 46.6% in CLP-S group and 60% in the CLP-H group after the sixth day. The HSS protects the animal against sepsis. Our results suggest that the volume replacement modulate pro and anti-inflammatory mediators of an inflammatory response, but HSS presented a more effective and potent effect.
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Affiliation(s)
| | - Flavia Llimona
- Emergency of Medicine Division-Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Ricardo Costa Petroni
- Emergency of Medicine Division-Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | | | - Irineu Tadeu Velasco
- Emergency of Medicine Division-Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Francisco Garcia Soriano
- Emergency of Medicine Division-Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- * E-mail:
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Martínez Gómez JM, Chen L, Schwarz H, Karrasch T. CD137 facilitates the resolution of acute DSS-induced colonic inflammation in mice. PLoS One 2013; 8:e73277. [PMID: 24023849 PMCID: PMC3762711 DOI: 10.1371/journal.pone.0073277] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Accepted: 07/18/2013] [Indexed: 12/27/2022] Open
Abstract
Background CD137 and its ligand (CD137L) are potent immunoregulatory molecules that influence activation, proliferation, differentiation and cell death of leukocytes. Expression of CD137 is upregulated in the lamina propria cells of Crohn’s disease patients. Here, the role of CD137 in acute Dextran-Sodium-Sulfate (DSS)-induced colitis in mice was examined. Methods We induced acute large bowel inflammation (colitis) via DSS administration in CD137−/− and wild-type (WT) mice. Colitis severity was evaluated by clinical parameters (weight loss), cytokine secretion in colon segment cultures, and scoring of histological inflammatory parameters. Additionally, populations of lamina propria mononuclear cells (LPMNC) and intraepithelial lymphocytes (IEL) were characterized by flow cytometry. In a subset of mice, resolution of intestinal inflammation was evaluated 3 and 7 days after withdrawal of DSS. Results We found that both CD137−/− and WT mice demonstrated a similar degree of inflammation after 5 days of DSS exposure. However, the resolution of colonic inflammation was impaired in the absence of CD137. This was accompanied by a higher histological score of inflammation, and increased release of the pro-inflammatory mediators granulocyte macrophage colony-stimulating factor (GM-CSF), CXCL1, IL-17 and IFN-γ. Further, there were significantly more neutrophils among the LPMNC of CD137−/− mice, and reduced numbers of macrophages among the IEL. Conclusion We conclude that CD137 plays an essential role in the resolution of acute DSS-induced intestinal inflammation in mice.
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Affiliation(s)
- Julia M. Martínez Gómez
- Department of Microbiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Lieping Chen
- Department of Immunobiology, Yale University School of Medicine, New Haven, Connecticut, United States of America
| | - Herbert Schwarz
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
- * E-mail: (HS); (TK)
| | - Thomas Karrasch
- Department of Internal Medicine I, University of Regensburg, Regensburg, Germany
- * E-mail: (HS); (TK)
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192
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Zygmunt M, Dudek M, Bilska-Wilkosz A, Bednarski M, Mogilski S, Knutelska J, Sapa J. Anti-inflammatory activity of lipoic acid in mice peritonitis model. Acta Pol Pharm 2013; 70:899-904. [PMID: 24147369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
This work aimed to investigate the effect of lipoic acid (LA) on sulfane sulfur (S*) level, infiltration of neutrophils and vascular permeability in a model of zymosan-induced peritonitis. The study showed that lipoic acid increased the sulfane sulfur level. Also, it decreased count of neutrophils and inhibition of intensity of early vascular permeability compared to the control group. These studies indicated that LA exhibits antiinflammatory activity. LA serves as a sulfane sulfur acceptor and releases sulfane sulfur in the form of hydrogen sulfide (H2S), which is probably responsible for its anti-inflammatory activity.
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Affiliation(s)
- Małgorzata Zygmunt
- Department of Pharmacological Screening, Jagiellonian University Medical College, Medyczna 9 St., 30-688 Kraków, Poland.
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193
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Paulus P, Holfeld J, Urbschat A, Mutlak H, Ockelmann PA, Tacke S, Zacharowski K, Reissig C, Stay D, Scheller B. Prednisolone as preservation additive prevents from ischemia reperfusion injury in a rat model of orthotopic lung transplantation. PLoS One 2013; 8:e73298. [PMID: 24009745 PMCID: PMC3756949 DOI: 10.1371/journal.pone.0073298] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 07/18/2013] [Indexed: 12/31/2022] Open
Abstract
The lung is, more than other solid organs, susceptible for ischemia reperfusion injury after orthotopic transplantation. Corticosteroids are known to potently suppress pro-inflammatory processes when given in the post-operative setting or during rejection episodes. Whereas their use has been approved for these clinical indications, there is no study investigating its potential as a preservation additive in preventing vascular damage already in the phase of ischemia. To investigate these effects we performed orthotopic lung transplantations (LTX) in the rat. Prednisolone was either added to the perfusion solution for lung preservation or omitted and rats were followed for 48 hours after LTX. Prednisolone preconditioning significantly increased survival and diminished reperfusion edema. Hypoxia induced vasoactive cytokines such as VEGF were reduced. Markers of leukocyte invasiveness like matrix metalloprotease (MMP)-2, or common pro-inflammatory molecules like the CXCR4 receptor or the chemokine (C-C motif) ligand (CCL)-2 were downregulated by prednisolone. Neutrophil recruitment to the grafts was only increased in Perfadex treated lungs. Together with this, prednisolone treated animals displayed significantly reduced lung protein levels of neutrophil chemoattractants like CINC-1, CINC-2α/β and LIX and upregulated tissue inhibitor of matrix metalloproteinase (TIMP)-1. Interestingly, lung macrophage invasion was increased in both, Perfadex and prednisolone treated grafts, as measured by MMP-12 or RM4. Markers of anti-inflammatory macrophage transdifferentiation like MRC-1, IL-13, IL-4 and CD163, significantly correlated with prednisolone treatment. These observations lead to the conclusion that prednisolone as an additive to the perfusion solution protects from hypoxia triggered danger signals already in the phase of ischemia and thus reduces graft edema in the phase of reperfusion. Additionally, prednisolone preconditioning might also lead to macrophage polarization as a beneficial long-term effect.
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Affiliation(s)
- Patrick Paulus
- Clinic of Anesthesiology, Intensive Care Medicine and Pain Therapy, Goethe-University Hospital Frankfurt, Frankfurt am Main, Germany.
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194
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Wan LM, Tan L, Wang ZR, Liu SX, Wang YL, Liang SY, Zhong JB, Lin HS. Preventive and therapeutic effects of Danhong injection on lipopolysaccharide induced acute lung injury in mice. J Ethnopharmacol 2013; 149:352-359. [PMID: 23850708 DOI: 10.1016/j.jep.2013.06.048] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2013] [Revised: 05/10/2013] [Accepted: 06/24/2013] [Indexed: 06/02/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Danhong injection (DHI), a Chinese Materia Medica standardized product extracted from Radix et Rhizoma Salviae Miltiorrhizae (Salvia miltiorrhiza Bge., Labiatae, Danshen in Chinese) and Flos Carthami (Carthamus tinctorius L., Compositae, Honghua in Chinese), has been reported to have anti-inflammatory, anti-oxidative and anti-fibrinolytic properties, which is used extensively for the treatment of cardiovascular diseases in clinic. AIM OF THIS STUDY The present study aimed to investigate the preventive and therapeutic effects of DHI on lipopolysaccharide (LPS) induced acute lung injury (ALI) in mice. MATERIALS AND METHODS Lung injury was induced by intranasal instillation with 10 μg LPS. Mice were randomly divided into four groups: Control group; LPS group; LPS+5 ml/kg DHI group and LPS+10 ml/kg DHI group. The effects of DHI on LPS-induced neutrophils influx, inflammatory cytokines release, protein leakage, myeloperoxidase (MPO) and superoxide dismutase (SOD) activities, malondialdehyde (MDA) level were examined. In addition, the NF-κB activation in lung tissues was detected by Western blot. RESULTS In LPS challenged mice, DHI significantly reduced the infiltration of activated neutrophils and decreased the levels of TNF-α and IL-6 in bronchoalveolar lavage fluid (BALF). DHI also inhibited protein extravasation in BALF, attenuated edema and the pathological changes in the lung. In addition, DHI markedly prevented LPS-induced elevation of MDA and MPO levels, as well as reduction of SOD activity. Further study demonstrated that DHI effectively inhibited the NF-κB activation in lung tissues. CONCLUSION DHI has been demonstrated to protect mice from LPS induced acute lung injury by its anti-inflammatory and anti-oxidant activities.
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Affiliation(s)
- Li-Mei Wan
- Department of Respiratory Medicine, Zengcheng people's hospital (Boji-affiliated hospital of Sun Yat-Sen university), Guangzhou 511300, China
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195
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Mao YF, Yu QH, Zheng XF, Liu K, Liang WQ, Wang YW, Deng XM, Jiang L. Pre-treatment with Cobra venom factor alleviates acute lung injury induced by intestinal ischemia-reperfusion in rats. Eur Rev Med Pharmacol Sci 2013; 17:2207-2217. [PMID: 23893188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Previous studies have shown that complement activation is required for intestinal ischemia-reperfusion (IIR)-induced tissue damage. Cobra venom factor (CVF), a structural and functional homolog to the activated form of C3 (the central component of the complement system), can cause exhaustive activation of the alternative pathway and deplete the complement components. AIM This study aims to investigate the effect of CVF pretreatment on acute lung injury induced by IIR in rats. MATERIALS AND METHODS Lung injury was induced by clamping superior mesenteric artery (SMA) for 60 min followed by 4 h of reperfusion. CVF was given via the tail vein 24 h before the operation. RESULTS Histological results as well as lung edema determination and permeability assay showed the severe damages were induced in the lungs of rats in the IIR group, accompanying with the increases in the levels of pulmonary malondialdehyde (MDA), myeloperoxidase (MPO) activity, intercellular adhesion molecule-1 (ICAM-1), interleukin (IL)-8. Remarkably, CVF pretreatment significantly attenuated the morphological lung injury, lung edema and lung permeability, reduced the increase of the levels of MDA, MPO, ICAM-1 and IL-8 induced by IIR. In addition, the severe damage of intestinal and elevation of plasma diamine oxidase activity in the IIR rats were significantly alleviated by CVF pretreatment. CONCLUSIONS CVF pretreatment could significantly reduce the acute lung injury induced by IIR. The mechanism might include, at least in part, the inhibition of oxidant generation, infiltration of neutrophils, ICAM-1 expression and IL-8 release. CVF might be an efficient reagent for preventing the IIR injuries in clinical condition.
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Affiliation(s)
- Y F Mao
- Department of Anesthesiology and Surgical Intensive Care Unit, Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, PR China.
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196
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Silveira KD, Coelho FM, Vieira AT, Barroso LC, Queiroz-Junior CM, Costa VV, Sousa LFC, Oliveira ML, Bader M, Silva TA, Santos RAS, Silva ACSE, Teixeira MM. Mechanisms of the anti-inflammatory actions of the angiotensin type 1 receptor antagonist losartan in experimental models of arthritis. Peptides 2013; 46:53-63. [PMID: 23727291 DOI: 10.1016/j.peptides.2013.05.012] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 05/14/2013] [Accepted: 05/14/2013] [Indexed: 12/28/2022]
Abstract
Angiotensin (Ang) II and its AT1 receptors have been implicated in the pathogenesis of rheumatoid arthritis. Activation of the counter-regulatory Ang-(1-7)-Mas receptor axis may contribute to some of the effects of AT₁ receptor blockers (ARBs). In this study, we have used losartan, an ARB, to investigate the role of and the mechanisms by which AT₁ receptors participated in two experimental models of arthritis: antigen-induced arthritis (AIA) in mice and adjuvant-induced arthritis (AdIA) in rats. Treatment with losartan decreased neutrophil recruitment, hypernociception and the production of TNF-α, IL-1β and chemokine (C-X-C motif) ligand 1 in mice subjected to AIA. Histopathological analysis showed significant reduction of tissue injury and inflammation and decreased proteoglycan loss. In addition to decreasing cytokine production, losartan directly reduced leukocyte rolling and adhesion. Anti-inflammatory effects of losartan were not associated to Mas receptor activation and/or Ang-(1-7) production. Anti-inflammatory effects were reproduced in rats subjected to AdIA. This study shows that ARBs have potent anti-inflammatory effects in animal models of arthritis. Mechanistically, reduction of leukocyte accumulation and of joint damage was associated with local inhibition of cytokine production and direct inhibition of leukocyte-endothelium interactions. The anti-inflammatory actions of losartan were accompanied by functional improvement of the joint, as seen by reduced joint hypernociception. These findings support the use of ARBs for the treatment of human arthritis and provide potential mechanisms for the anti-inflammatory actions of these compounds.
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MESH Headings
- Angiotensin I/biosynthesis
- Angiotensin II Type 1 Receptor Blockers/pharmacology
- Animals
- Anti-Inflammatory Agents, Non-Steroidal/pharmacology
- Arthritis, Experimental/drug therapy
- Arthritis, Rheumatoid/drug therapy
- Cell Adhesion/drug effects
- Chemokine CXCL1/biosynthesis
- Disease Models, Animal
- Female
- Hyperalgesia/drug therapy
- Inflammation/drug therapy
- Interleukin-1beta/biosynthesis
- Leukocyte Rolling/drug effects
- Losartan/pharmacology
- Male
- Mice
- Mice, Inbred C57BL
- Neutrophil Infiltration/drug effects
- Peptide Fragments/biosynthesis
- Proto-Oncogene Mas
- Proto-Oncogene Proteins/metabolism
- Rats
- Rats, Sprague-Dawley
- Receptor, Angiotensin, Type 1/drug effects
- Receptor, Angiotensin, Type 1/metabolism
- Receptors, G-Protein-Coupled/metabolism
- Tumor Necrosis Factor-alpha/biosynthesis
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Affiliation(s)
- Kátia D Silveira
- Immunopharmacology, Department of Biochemistry and Immunology, Institute of Biological Sciences, Brazil
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197
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Zindl CL, Lai JF, Lee YK, Maynard CL, Harbour SN, Ouyang W, Chaplin DD, Weaver CT. IL-22-producing neutrophils contribute to antimicrobial defense and restitution of colonic epithelial integrity during colitis. Proc Natl Acad Sci U S A 2013; 110:12768-73. [PMID: 23781104 PMCID: PMC3732935 DOI: 10.1073/pnas.1300318110] [Citation(s) in RCA: 261] [Impact Index Per Article: 23.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
IL-22 plays an important role in mucosal epithelial cell homeostasis. Using a dextran sodium sulfate-induced mouse model of acute colitis, we observed an IL-23-dependent up-regulation of IL-22 in the middle and distal colon at the onset of epithelial cell damage. This heightened IL-22 correlated with an influx of innate immune cells, suggesting an important role in colonic epithelial protection. Freshly isolated colon-infiltrating neutrophils produced IL-22 contingent upon IL-23 signaling, and IL-22 production was augmented by TNF-α. Importantly, the depletion of neutrophils resulted in diminished IL-22 levels in the colon, and the transfer of IL-22-competent neutrophils to Il22a-deficient mice protected the colonic epithelium from dextran sodium sulfate-induced damage. In addition, IL-22-producing neutrophils targeted colonic epithelial cells to up-regulate the antimicrobial peptides, RegIIIβ and S100A8. This study establishes a role for neutrophils in providing IL-22-dependent mucosal epithelial support that contributes to the resolution of colitis.
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Affiliation(s)
- Carlene L. Zindl
- Departments of Pathology and
- Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Jen-Feng Lai
- Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Yun Kyung Lee
- Departments of Pathology and
- Division of Biology, California Institute of Technology, Pasadena, CA 91125; and
| | | | | | - Wenjun Ouyang
- Department of Immunology, Genentech, South San Francisco, CA 94080
| | - David D. Chaplin
- Microbiology, University of Alabama at Birmingham, Birmingham, AL 35294
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198
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Berger EA, McClellan SA, Vistisen KS, Hazlett LD. HIF-1α is essential for effective PMN bacterial killing, antimicrobial peptide production and apoptosis in Pseudomonas aeruginosa keratitis. PLoS Pathog 2013; 9:e1003457. [PMID: 23874197 PMCID: PMC3715414 DOI: 10.1371/journal.ppat.1003457] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 05/08/2013] [Indexed: 12/28/2022] Open
Abstract
Hypoxia-inducible factor (HIF)-1α, is a transcription factor that controls energy metabolism and angiogenesis under hypoxic conditions, and a potent regulator of innate immunity. The studies described herein examined the role of HIF-1α in disease resolution in BALB/c (resistant, cornea heals) mice after ocular infection with Pseudomonas (P.) aeruginosa. Furthermore, the current studies focused on the neutrophil (PMN), the predominant cell infiltrate in keratitis. Using both siRNA and an antagonist (17-DMAG), the role of HIF-1α was assessed in P. aeruginosa-infected BALB/c mice. Clinical score and slit lamp photography indicated HIF-1α inhibition exacerbated disease and corneal destruction. Real time RT-PCR, immunohistochemistry, ELISA, Greiss and MPO assays, bacterial load, intracellular killing, phagocytosis and apoptosis assays further tested the regulatory role of HIF-1α. Despite increased pro-inflammatory cytokine expression and increased MPO levels after knocking down HIF-1α expression, in vivo studies revealed a decrease in NO production and higher bacterial load. In vitro studies using PMN provided evidence that although inhibition of HIF-1α did not affect phagocytosis, both bacterial killing and apoptosis were significantly affected, as was production of antimicrobial peptides. Overall, data provide evidence that inhibition of HIF-1α converts a normally resistant disease response to susceptible (corneal thinning and perforation) after induction of bacterial keratitis. Although this inhibition does not appear to affect PMN transmigration or phagocytosis, both in vivo and in vitro approaches indicate that the transcriptional factor is essential for effective bacterial killing, apoptosis and antimicrobial peptide production.
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Affiliation(s)
- Elizabeth A. Berger
- Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Sharon A. McClellan
- Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Kerry S. Vistisen
- Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, Michigan, United States of America
| | - Linda D. Hazlett
- Department of Anatomy and Cell Biology, Wayne State University School of Medicine, Detroit, Michigan, United States of America
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199
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Liang X, Wang RS, Wang F, Liu S, Guo F, Sun L, Wang YJ, Sun YX, Chen XL. Sodium butyrate protects against severe burn-induced remote acute lung injury in rats. PLoS One 2013; 8:e68786. [PMID: 23874764 PMCID: PMC3708909 DOI: 10.1371/journal.pone.0068786] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2013] [Accepted: 06/01/2013] [Indexed: 12/14/2022] Open
Abstract
High-mobility group box 1 protein (HMGB1), a ubiquitous nuclear protein, drives proinflammatory responses when released extracellularly. It plays a key role as a distal mediator in the development of acute lung injury (ALI). Sodium butyrate, an inhibitor of histone deacetylase, has been demonstrated to inhibit HMGB1 expression. This study investigates the effect of sodium butyrate on burn-induced lung injury. Sprague-Dawley rats were divided into three groups: 1) sham group, sham burn treatment; 2) burn group, third-degree burns over 30% total body surface area (TBSA) with lactated Ringer's solution for resuscitation; 3) burn plus sodium butyrate group, third-degree burns over 30% TBSA with lactated Ringer's solution containing sodium butyrate for resuscitation. The burned animals were sacrificed at 12, 24, and 48 h after burn injury. Lung injury was assessed in terms of histologic changes and wet weight to dry weight (W/D) ratio. Tumor necrosis factor (TNF)-α and interleukin (IL)-8 protein concentrations in bronchoalveolar lavage fluid (BALF) and serum were measured by enzyme-linked immunosorbent assay, and HMGB1 expression in the lung was determined by Western blot analysis. Pulmonary myeloperoxidase (MPO) activity and malondialdehyde (MDA) concentration were measured to reflect neutrophil infiltration and oxidative stress in the lung, respectively. As a result, sodium butyrate significantly inhibited the HMGB1 expressions in the lungs, reduced the lung W/D ratio, and improved the pulmonary histologic changes induced by burn trauma. Furthermore, sodium butyrate administration decreased the TNF-α and IL-8 concentrations in BALF and serum, suppressed MPO activity, and reduced the MDA content in the lungs after severe burn. These results suggest that sodium butyrate attenuates inflammatory responses, neutrophil infiltration, and oxidative stress in the lungs, and protects against remote ALI induced by severe burn, which is associated with inhibiting HMGB1 expression.
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Affiliation(s)
- Xun Liang
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Ren-Su Wang
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Fei Wang
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Sheng Liu
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Feng Guo
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Li Sun
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Yong-Jie Wang
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Ye-Xiang Sun
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
| | - Xu-Lin Chen
- Department of Burns, the First Affiliated Hospital of Anhui Medical University, Hefei, Anhui, PR China
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200
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Hernandez ML, Wagner JG, Kala A, Mills K, Wells HB, Alexis NE, Lay JC, Jiang Q, Zhang H, Zhou H, Peden DB. Vitamin E, γ-tocopherol, reduces airway neutrophil recruitment after inhaled endotoxin challenge in rats and in healthy volunteers. Free Radic Biol Med 2013; 60:56-62. [PMID: 23402870 PMCID: PMC3654053 DOI: 10.1016/j.freeradbiomed.2013.02.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Revised: 02/01/2013] [Accepted: 02/05/2013] [Indexed: 01/11/2023]
Abstract
Epidemiologic studies suggest that dietary vitamin E is an important candidate intervention for asthma. Our group has shown that daily consumption of vitamin E (γ-tocopherol, γT) has anti-inflammatory actions in both rodent and human phase I studies. The objective of this study was to test whether γT supplementation could mitigate a model of neutrophilic airway inflammation in rats and in healthy human volunteers. F344/N rats were randomized to oral gavage with γT versus placebo, followed by intranasal LPS (20μg) challenge. Bronchoalveolar lavage fluid and lung histology were used to assess airway neutrophil recruitment. In a phase IIa clinical study, 13 nonasthmatic subjects completed a double-blinded, placebo-controlled crossover study in which they consumed either a γT-enriched capsule or a sunflower oil placebo capsule. After 7 days of daily supplementation, they underwent an inhaled LPS challenge. Induced sputum was assessed for neutrophils 6 h after inhaled LPS. The effect of γT compared to placebo on airway neutrophils post-LPS was compared using a repeated-measures analysis of variance. In rats, oral γT supplementation significantly reduced tissue infiltration (p<0.05) and accumulation of airway neutrophils (p<0.05) that are elicited by intranasal LPS challenge compared to control rats. In human volunteers, γT treatment significantly decreased induced sputum neutrophils (p=0.03) compared to placebo. Oral supplementation with γT reduced airway neutrophil recruitment in both rat and human models of inhaled LPS challenge. These results suggest that γT is a potential therapeutic candidate for prevention or treatment of neutrophilic airway inflammation in diseased populations.
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Affiliation(s)
- Michelle L Hernandez
- Center for Environmental Medicine, Asthma, & Lung Biology, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27516, USA.
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