1
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Man JJ, Lu Q, Moss ME, Carvajal B, Baur W, Garza AE, Freeman R, Anastasiou M, Ngwenyama N, Adler GK, Alcaide P, Jaffe IZ. Myeloid Mineralocorticoid Receptor Transcriptionally Regulates P-Selectin Glycoprotein Ligand-1 and Promotes Monocyte Trafficking and Atherosclerosis. Arterioscler Thromb Vasc Biol 2021; 41:2740-2755. [PMID: 34615372 PMCID: PMC8601161 DOI: 10.1161/atvbaha.121.316929] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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] [Received: 05/10/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022]
Abstract
Objective MR (mineralocorticoid receptor) activation associates with increased risk of cardiovascular ischemia while MR inhibition reduces cardiovascular-related mortality and plaque inflammation in mouse atherosclerosis. MR in myeloid cells (My-MR) promotes inflammatory cell infiltration into injured tissues and atherosclerotic plaque inflammation by unclear mechanisms. Here, we examined the role of My-MR in leukocyte trafficking and the impact of sex. Approach and Results We confirm in vivo that My-MR deletion (My-MR-KO) in ApoE-KO mice decreased plaque size. Flow cytometry revealed fewer plaque macrophages with My-MR-KO. By intravital microscopy, My-MR-KO significantly attenuated monocyte slow-rolling and adhesion to mesenteric vessels and decreased peritoneal infiltration of myeloid cells in response to inflammatory stimuli in male but not female mice. My-MR-KO mice had significantly less PSGL1 (P-selectin glycoprotein ligand 1) mRNA in peritoneal macrophages and surface PSGL1 protein on circulating monocytes in males. In vitro, MR activation with aldosterone significantly increased PSGL1 mRNA only in monocytes from MR-intact males. Similarly, aldosterone induced, and MR antagonist spironolactone inhibited, PSGL1 expression in human U937 monocytes. Mechanistically, aldosterone stimulated MR binding to a predicted MR response element in intron-1 of the PSGL1 gene by ChIP-qPCR. Reporter assays demonstrated that this PSGL1 MR response element is necessary and sufficient for aldosterone-activated, MR-dependent transcriptional activity. Conclusions These data identify PSGL1 as a My-MR target gene that drives leukocyte trafficking to enhance atherosclerotic plaque inflammation. These novel and sexually dimorphic findings provide insight into increased ischemia risk with MR activation, cardiovascular protection in women, and the role of MR in atherosclerosis and tissue inflammation.
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MESH Headings
- Adult
- Animals
- Aorta, Thoracic/metabolism
- Aorta, Thoracic/pathology
- Aortic Diseases/genetics
- Aortic Diseases/metabolism
- Aortic Diseases/pathology
- Aortic Diseases/prevention & control
- Atherosclerosis/genetics
- Atherosclerosis/metabolism
- Atherosclerosis/pathology
- Atherosclerosis/prevention & control
- Cell Adhesion/drug effects
- Disease Models, Animal
- Female
- HEK293 Cells
- Humans
- Hypoglycemia/drug therapy
- Hypoglycemia/genetics
- Hypoglycemia/metabolism
- Leukocyte Rolling/drug effects
- Macrophages, Peritoneal/metabolism
- Macrophages, Peritoneal/pathology
- Male
- Membrane Glycoproteins/genetics
- Membrane Glycoproteins/metabolism
- Mice, Inbred C57BL
- Mice, Knockout, ApoE
- Middle Aged
- Mineralocorticoid Receptor Antagonists/therapeutic use
- Monocytes/drug effects
- Monocytes/metabolism
- Monocytes/pathology
- Randomized Controlled Trials as Topic
- Receptors, Mineralocorticoid/drug effects
- Receptors, Mineralocorticoid/genetics
- Receptors, Mineralocorticoid/metabolism
- Sex Factors
- Signal Transduction
- Spironolactone/therapeutic use
- Transcription, Genetic
- Transendothelial and Transepithelial Migration
- Treatment Outcome
- U937 Cells
- Young Adult
- Mice
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Affiliation(s)
- Joshua J Man
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA
- Graduate School of Biomedical Sciences, Tufts University School of Medicine, Boston, MA
| | - Qing Lu
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA
| | - M. Elizabeth Moss
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA
- Graduate School of Biomedical Sciences, Tufts University School of Medicine, Boston, MA
| | - Brigett Carvajal
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA
| | - Wendy Baur
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA
| | - Amanda E Garza
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Roy Freeman
- Department of Neurology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Marina Anastasiou
- Department of Immunology, Tufts University School of Medicine, Boston, MA
- Department of Internal Medicine, University of Crete Medical School, Crete, Greece
| | - Njabulo Ngwenyama
- Department of Immunology, Tufts University School of Medicine, Boston, MA
| | - Gail K Adler
- Division of Endocrinology, Diabetes and Hypertension, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA
| | - Pilar Alcaide
- Department of Immunology, Tufts University School of Medicine, Boston, MA
| | - Iris Z Jaffe
- Molecular Cardiology Research Institute, Tufts Medical Center, Boston, MA
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2
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Xiao W, Oldham WM, Priolo C, Pandey AK, Loscalzo J. Immunometabolic Endothelial Phenotypes: Integrating Inflammation and Glucose Metabolism. Circ Res 2021; 129:9-29. [PMID: 33890812 PMCID: PMC8221540 DOI: 10.1161/circresaha.120.318805] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 04/16/2021] [Accepted: 04/22/2021] [Indexed: 12/20/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Wusheng Xiao
- Division of Cardiovascular Medicine (W.X., A.K.P., J.L.), Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - William M. Oldham
- Division of Pulmonary and Critical Care Medicine, Department of Medicine (W.M.O., C.P.), Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Carmen Priolo
- Division of Pulmonary and Critical Care Medicine, Department of Medicine (W.M.O., C.P.), Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Arvind K. Pandey
- Division of Cardiovascular Medicine (W.X., A.K.P., J.L.), Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
| | - Joseph Loscalzo
- Division of Cardiovascular Medicine (W.X., A.K.P., J.L.), Brigham and Women’s Hospital and Harvard Medical School, Boston, MA
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3
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Dos Santos E, Leitão MM, Aguero Ito CN, Silva-Filho SE, Arena AC, Silva-Comar FMDS, Nakamura Cuman RK, Oliveira RJ, Nazari Formagio AS, Leite Kassuya CA. Analgesic and anti-inflammatory articular effects of essential oil and camphor isolated from Ocimum kilimandscharicum Gürke leaves. J Ethnopharmacol 2021; 269:113697. [PMID: 33316364 DOI: 10.1016/j.jep.2020.113697] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [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: 09/30/2020] [Revised: 12/06/2020] [Accepted: 12/09/2020] [Indexed: 05/12/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Leaves from Ocimum kilimandscharicum Gürke (Lamiaceae) are popularly used against articular pain. AIM OF STUDY The aim of this study was to test the anti-inflammatory and anti-hyperalgesic (analgesic) properties of the essential oil and camphor isolated from O. Kilimandscharicum leaves (EOOK) in 4 models including zymosan induced-articular inflammation model in mice. MATERIAL AND METHODS For in vivo models, EOOK was tested in carrageenan-induced paw edema model with oral doses of 30, 100, and 300 mg/kg (oral administration = p.o.) and in zymosan-induced articular inflammation (including knee edema, leukocyte infiltration, mechanical hyperalgesia and nitric oxide), EOOK (100 mg/kg, p. o.) and camphor (30 mg/kg, p. o.) were tested. EOOK (100 mg/kg, p. o.) was tested in the rolling and also in the adhesion of leukocytes to the mesenteric microcirculation in situ model of carrageenan induced inflammation and EOOK (1, 3, 10, 30, and 60 μg/mL) was tested in vitro against neutrophils chemotaxis induced by N-formyl methionyl leucyl phenylalanine (fMLP). RESULTS The treatment with EOOK significantly inhibited the carrageenan-induced edema, mechanical and cold hyperalgesia. Both, EOOK and camphor inhibited all articular parameters induced by zymosan. In situ intravitral microscopy analysis, EOOK significantly inhibited carrageenan-induced leukocyte rolling and adhesion. In vitro neutrophils chemotaxis, EOOK inhibited the leukocyte chemotaxis induced by fMLP. CONCLUSIONS The present study showed that EOOK inhibited pain and inflammatory parameters contributing, at least in part, to explain the popular use of this plant as analgesic natural agent. This study also demonstrates that camphor and some known anti-inflammatory compounds present in EOOK could contribute for analgesic and anti-inflammatory articular properties.
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Affiliation(s)
- Elisangela Dos Santos
- School of Health Sciences, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul State, Brazil.
| | - Maicon Matos Leitão
- School of Health Sciences, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul State, Brazil; School of Health Sciences, University Center of Grande Dourados (UNIGRAN), Campo Grande, MS, Brazil.
| | - Caren Naomi Aguero Ito
- School of Health Sciences, Federal University of Grande Dourados, Dourados, Mato Grosso do Sul State, Brazil.
| | - Saulo Euclides Silva-Filho
- Pharmaceutical Sciences, Food and Nutrition College, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul State, Brazil.
| | - Arielle Cristina Arena
- Department of Structural and Functional Biology, Institute of Biosciences of Botucatu, Universidade Estadual Paulista (UNESP), Botucatu, São Paulo State, Brazil.
| | | | | | - Rodrigo Juliano Oliveira
- School of Medicine, Federal University of Mato Grosso do Sul, Campo Grande, Mato Grosso do Sul State, Brazil.
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Calvier L, Xian X, Lee R, Sacharidou A, Mineo C, Shaul PW, Kounnas MZ, Tsai S, Herz J. Reelin Depletion Protects Against Atherosclerosis by Decreasing Vascular Adhesion of Leukocytes. Arterioscler Thromb Vasc Biol 2021; 41:1309-1318. [PMID: 33626909 PMCID: PMC7990715 DOI: 10.1161/atvbaha.121.316000] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [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] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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MESH Headings
- Animals
- Antibodies, Neutralizing/pharmacology
- Atherosclerosis/genetics
- Atherosclerosis/immunology
- Atherosclerosis/metabolism
- Atherosclerosis/prevention & control
- CX3C Chemokine Receptor 1/genetics
- Cell Adhesion/drug effects
- Cell Adhesion Molecules, Neuronal/antagonists & inhibitors
- Cell Adhesion Molecules, Neuronal/deficiency
- Cell Adhesion Molecules, Neuronal/genetics
- Coculture Techniques
- Disease Models, Animal
- Endothelial Cells/drug effects
- Endothelial Cells/immunology
- Endothelial Cells/metabolism
- Extracellular Matrix Proteins/antagonists & inhibitors
- Extracellular Matrix Proteins/deficiency
- Extracellular Matrix Proteins/genetics
- Female
- Green Fluorescent Proteins/genetics
- Green Fluorescent Proteins/metabolism
- Humans
- LDL-Receptor Related Proteins/metabolism
- Leukocyte Rolling/drug effects
- Leukocytes/drug effects
- Leukocytes/immunology
- Leukocytes/metabolism
- Male
- Mice, Transgenic
- Nerve Tissue Proteins/antagonists & inhibitors
- Nerve Tissue Proteins/deficiency
- Nerve Tissue Proteins/genetics
- Oligonucleotides, Antisense/pharmacology
- Plaque, Atherosclerotic
- Receptors, LDL/deficiency
- Receptors, LDL/genetics
- Reelin Protein
- Serine Endopeptidases/deficiency
- Serine Endopeptidases/genetics
- Signal Transduction
- U937 Cells
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Affiliation(s)
- Laurent Calvier
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas TX, USA
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas TX, USA
| | - Xunde Xian
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas TX, USA
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas TX, USA
| | - Richard Lee
- Ionis Pharmaceuticals, Inc. San Diego CA, USA
| | - Anastasia Sacharidou
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas TX, USA
| | - Chieko Mineo
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas TX, USA
| | - Philip W. Shaul
- Center for Pulmonary and Vascular Biology, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas TX, USA
| | | | - Shirling Tsai
- Department of Surgery, UT Southwestern Medical Center, Dallas TX, USA
- Dallas VA Medical Center, Dallas TX, USA
| | - Joachim Herz
- Department of Molecular Genetics, University of Texas (UT) Southwestern Medical Center, Dallas TX, USA
- Center for Translational Neurodegeneration Research, UT Southwestern Medical Center, Dallas TX, USA
- Department of Neuroscience, UT Southwestern Medical Center, Dallas TX, USA
- Department of Neurology and Neurotherapeutics, UT Southwestern Medical Center, Dallas TX, USA
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5
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Uhl B, Braun C, Dominik J, Luft J, Canis M, Reichel CA. A Novel Experimental Approach for In Vivo Analyses of the Salivary Gland Microvasculature. Front Immunol 2021; 11:604470. [PMID: 33679695 PMCID: PMC7925411 DOI: 10.3389/fimmu.2020.604470] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Accepted: 12/21/2020] [Indexed: 12/28/2022] Open
Abstract
Microvascular dysfunction plays a fundamental role in the pathogenesis of salivary gland disorders. Restoring and preserving microvascular integrity might therefore represent a promising strategy for the treatment of these pathologies. The mechanisms underlying microvascular dysfunction in salivary glands, however, are still obscure, partly due to the unavailability of adequate in vivo models. Here, we present a novel experimental approach that allows comprehensive in vivo analyses of the salivary gland microvasculature in mice. For this purpose, we employed different microscopy techniques including multi-photon in vivo microscopy to quantitatively analyze interactions of distinct immune cell subsets in the submandibular gland microvasculature required for their infiltration into the surrounding parenchyma and their effects on microvascular function. Confocal microscopy and multi-channel flow cytometry in tissue sections/homogenates complemented these real-time analyses by determining the molecular phenotype of the participating cells. To this end, we identified key adhesion and signaling molecules that regulate the subset- and tissue-specific trafficking of leukocytes into inflamed glands and control the associated microvascular leakage. Hence, we established an experimental approach that allows in vivo analyses of microvascular processes in healthy and diseased salivary glands. This enables us to delineate distinct pathogenetic factors as novel therapeutic targets in salivary gland diseases.
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Affiliation(s)
- Bernd Uhl
- Department of Otorhinolaryngology—Head and Neck Surgery, Ludwig-Maximilians-Universität München, Munich, Germany
- Walter Brendel Centre for Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Constanze Braun
- Walter Brendel Centre for Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Julian Dominik
- Walter Brendel Centre for Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Joshua Luft
- Walter Brendel Centre for Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Martin Canis
- Department of Otorhinolaryngology—Head and Neck Surgery, Ludwig-Maximilians-Universität München, Munich, Germany
| | - Christoph A. Reichel
- Department of Otorhinolaryngology—Head and Neck Surgery, Ludwig-Maximilians-Universität München, Munich, Germany
- Walter Brendel Centre for Experimental Medicine, Ludwig-Maximilians-Universität München, Munich, Germany
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6
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ElSaadani M, Ahmed SM, Jacovides C, Lopez A, Johnson VE, Kaplan LJ, Schwab CW, Smith DH, Pascual JL. Antithrombin III ameliorates post-traumatic brain injury cerebral leukocyte mobilization enhancing recovery of blood brain barrier integrity. J Trauma Acute Care Surg 2021; 90:274-280. [PMID: 33093292 PMCID: PMC8878290 DOI: 10.1097/ta.0000000000003000] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [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] [Indexed: 11/26/2022]
Abstract
BACKGROUND Acute traumatic coagulopathy often accompanies traumatic brain injury (TBI) and may impair cognitive recovery. Antithrombin III (AT-III) reduces the hypercoagulability of TBI. Antithrombin III and heparinoids such as enoxaparin (ENX) demonstrate potent anti-inflammatory activity, reducing organ injury and modulating leukocyte (LEU) activation, independent of their anticoagulant effect. It is unknown what impact AT-III exerts on cerebral LEU activation and blood-brain barrier (BBB) permeability after TBI. We hypothesized that AT-III reduces live microcirculatory LEU-endothelial cell (EC) interactions and leakage at the BBB following TBI. METHODS CD1 mice (n = 71) underwent either severe TBI (controlled cortical impact (CCI), 6-m/s velocity, 1-mm depth, and 4-mm diameter) or sham craniotomy and then received either AT-III (250 IU/kg), ENX (1.5 mg/kg), or vehicle (saline) every 24 hours. Forty-eight hours post-TBI, cerebral intravital microscopy visualized in vivo penumbral microvascular LEU-EC interactions and microvascular leakage to assess BBB inflammation/permeability. Body weight loss and the Garcia neurological test (motor, sensory, reflex, balance) served as surrogates of clinical recovery. RESULTS Both AT-III and ENX similarly reduced in vivo penumbral LEU rolling and adhesion (p < 0.05). Antithrombin III also reduced live BBB leakage (p < 0.05). Antithrombin III animals demonstrated the least 48-hour body weight loss (8.4 ± 1%) versus controlled cortical impact and vehicle (11.4 ± 0.5%, p < 0.01). Garcia neurological test scores were similar among groups. CONCLUSION Antithrombin III reduces post-TBI penumbral LEU-EC interactions in the BBB leading to reduced neuromicrovascular permeability. Antithrombin III further reduced body weight loss compared with no therapy. Further study is needed to determine if these AT-III effects on neuroinflammation affect longer-term neurocognitive recovery after TBI.
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Affiliation(s)
- Mohamed ElSaadani
- From the Division of Traumatology, Surgical Critical Care and Emergency Surgery (M.E., S.M.A., C.J., A.L., L.J.K., C.W.S., J.L.P.), and Department of Neurosurgery, Center for Brain Injury and Repair (V.E.J., D.H.S., J.L.P.), Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
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7
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da Silva Pantoja P, Assreuy AMS, Silva RO, Damasceno SRB, Mendonça VA, Mendes TS, Morais JAV, de Almeida SL, Teixeira AÉEA, de Souza MHLP, Pereira MG, Soares PMG. The polysaccharide-rich tea of Ximenia americana barks prevents indomethacin-induced gastrointestinal damage via neutrophil inhibition. J Ethnopharmacol 2018; 224:195-201. [PMID: 29859304 DOI: 10.1016/j.jep.2018.05.041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 02/08/2018] [Revised: 05/18/2018] [Accepted: 05/29/2018] [Indexed: 06/08/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Barks of Ximenia americana are used by the population to treat gastrointestinal inflammatory disorders. Indomethacin is a non-selective non-steroidal anti-inflammatory drug that induces marked gastrointestinal damage. AIMS OF THE STUDIES To evaluate the gastroprotective activity of total polysaccharides contained in the extract (TPL-Xa) or tea (Tea-Xa) of Ximenia americana barks in the mice gastric damage induced by indomethacin. MATERIALS AND METHODS TPL-Xa was obtained by a combination of NaOH extraction and ethanol precipitation. Tea-Xa was prepared in distilled water boiled during 5 min. Animals received p.o. 0.9% NaCl (saline - control group), TPL-Xa (1-90 mg/kg) or Tea-Xa 1 h before gastritis induction by indomethacin (20 mg/kg). Mice were sacrificed 7 h after gastritis induction and analyzed for the following parameters: stomach lesions measurement; histological evaluation; myeloperoxidase (MPO) activity; nitrate/nitrite and cytokine levels; leukocyte adhesion and rolling by intravital microscopy. RESULTS TPL-Xa reduced macroscopic and microscopic damage, MPO activity (59%), leukocyte rolling (86%) and adhesion (84%), nitrite/nitrate ratio (100%) and IL-8 (69%), but increased IL-4 (50%). Tea-Xa (12.8 yield; 39.3% carbohydrate, including 25.8% uronic acid; 4% protein) reduced macroscopic damage (62%) and MPO activity (50%). CONCLUSION TPL and Tea of Ximenia americana barks ameliorate the gastric injury induced by indomethacin in mice, an effect that was dependent on the reduction of neutrophil infiltration.
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Affiliation(s)
- Patrícia da Silva Pantoja
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil
| | - Ana Maria Sampaio Assreuy
- Instituto Superior de Ciências Biomédicas, Universidade Estadual do Ceará, Av. Dr. Silas Munguba 1700, 60740-000 Fortaleza CE, Brazil
| | - Renan Oliveira Silva
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil
| | - Samara Rodrigues Bonfim Damasceno
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil
| | - Vanessa Azevedo Mendonça
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil
| | - Tiago Santos Mendes
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil
| | - Jose Athayde Vasconcelos Morais
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil
| | - Samira Lopes de Almeida
- Faculdade de Educação, Ciências e Letras do Sertão Central, Universidade Estadual do Ceará, Rua José de Queirós Pessoa, 2554, 63900-000 Quixadá, Ceará, Brazil
| | - Antônio Éder Enzo Albuquerque Teixeira
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil
| | | | - Maria Gonçalves Pereira
- Faculdade de Educação, Ciências e Letras do Sertão Central, Universidade Estadual do Ceará, Rua José de Queirós Pessoa, 2554, 63900-000 Quixadá, Ceará, Brazil
| | - Pedro Marcos Gomes Soares
- LEFFAG - Laboratório de Estudos da Fisio-Farmacologia Gastrintestinal, Centro de Biomedicina, Rua Coronel Nunes de Melo, 1315, 60430-270 Fortaleza, CE, Brazil; Departamento de Morfologia, Universidade Federal do Ceará, Rua Delmiro de Farias s/n, 60430-170, Fortaleza, CE, Brazil.
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8
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Mandler WK, Nurkiewicz TR, Porter DW, Kelley EE, Olfert IM. Microvascular Dysfunction Following Multiwalled Carbon Nanotube Exposure Is Mediated by Thrombospondin-1 Receptor CD47. Toxicol Sci 2018; 165:90-99. [PMID: 29788500 PMCID: PMC6111784 DOI: 10.1093/toxsci/kfy120] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [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: 12/12/2022] Open
Abstract
Pulmonary exposure to multiwalled carbon nanotubes (MWCNTs) disrupts peripheral microvascular function. Thrombospondin-1 (TSP-1) is highly expressed during lung injury and has been shown to alter microvascular reactivity. It is unclear exactly how TSP-1 exerts effects on vascular function, but we hypothesized that the TSP-1 receptor CD47 may mediate changes in vasodilation. Wildtype (WT) or CD47 knockout (CD47 KO) C57B6/J-background animals were exposed to 50 µg of MWCNT or saline control via pharyngeal aspiration. Twenty-four hours postexposure, intravital microscopy was performed to assess arteriolar dilation and venular leukocyte adhesion and rolling. To assess tissue redox status, electron paramagnetic resonance and NOx measurements were performed, while inflammatory biomarkers were measured via multiplex assay.Vasodilation was impaired in the WT + MWCNT group compared with control (57 ± 9 vs 90 ± 2% relaxation), while CD47 KO animals showed no impairment (108 ± 8% relaxation). Venular leukocyte adhesion and rolling increased by >2-fold, while the CD47 KO group showed no change. Application of the antioxidant apocynin rescued normal leukocyte activity in the WT + MWCNT group. Lung and plasma NOx were reduced in the WT + MWCNT group by 47% and 32%, respectively, while the CD47 KO groups were unchanged from control. Some inflammatory cytokines were increased in the CD47 + MWCNT group only. In conclusion, TSP-1 is an important ligand mediating MWCNT-induced microvascular dysfunction, and CD47 is a component of this dysregulation. CD47 activation likely disrupts nitric oxide (•NO) signaling and promotes leukocyte-endothelial interactions. Impaired •NO production, signaling, and bioavailability is linked to a variety of cardiovascular diseases in which TSP-1/CD47 may play an important role.
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Affiliation(s)
- William Kyle Mandler
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506
- Toxicology Working Group, West Virginia University School of Medicine, Morgantown, WV 26506
| | - Timothy R Nurkiewicz
- Toxicology Working Group, West Virginia University School of Medicine, Morgantown, WV 26506
- Department of Physiology, Pharmacology and Neuroscience, West Virginia University School of Medicine, Morgantown, WV 26506
- West Virginia Clinical and Translational Science Institute, Robert C. Byrd Health Sciences Center, Morgantown, WV 26506
| | - Dale W Porter
- Toxicology Working Group, West Virginia University School of Medicine, Morgantown, WV 26506
- National Institute for Occupational Safety and Health, Morgantown, WV 26505
| | - Eric E Kelley
- Toxicology Working Group, West Virginia University School of Medicine, Morgantown, WV 26506
- Department of Physiology, Pharmacology and Neuroscience, West Virginia University School of Medicine, Morgantown, WV 26506
- West Virginia Clinical and Translational Science Institute, Robert C. Byrd Health Sciences Center, Morgantown, WV 26506
| | - Ivan Mark Olfert
- Division of Exercise Physiology, West Virginia University School of Medicine, Morgantown, WV 26506
- Toxicology Working Group, West Virginia University School of Medicine, Morgantown, WV 26506
- Department of Physiology, Pharmacology and Neuroscience, West Virginia University School of Medicine, Morgantown, WV 26506
- West Virginia Clinical and Translational Science Institute, Robert C. Byrd Health Sciences Center, Morgantown, WV 26506
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Oroszi M, Szabó A, Fehér ÁM, Deák G, Bajory Z. Microcirculatory effects of sildenafil in experimental testicular torsion in rats. World J Urol 2018; 36:2081-2087. [PMID: 29785490 DOI: 10.1007/s00345-018-2340-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Accepted: 05/14/2018] [Indexed: 11/27/2022] Open
Abstract
PURPOSE Investigate the short-term effect of sildenafil on microcirculation, especially the velocity, the pattern of the flow and the recruitment of the leukocyte in postcapillaries. METHODS In male Sprague-Dawley rats, the microcirculatory consequences of 60 min experimental testicular torsion, followed by 240 min of reperfusion, were examined. Using fluorescence intravital microscopy, changes in red blood cell velocity in post-capillary venules and rolling as well as adhesion of leukocytes in the postcapillary venules were examined before the torsion and every hour during the reperfusion period. Sildenafil was given 10 min prior to reperfusion (iv 0.7 mg/kg, n = 6), while control animals received saline vehicle (n = 5). RESULTS The characteristic flow motion disappeared in the affected testicular during the torsion. Red blood cell velocity values were dramatically decreased (by > 50%) and both rolling and adhesion of leukocytes increased during the reperfusion phase. Sildenafil treatment resulted in significantly higher red blood cell velocity values during the entire reperfusion period, but exerted only a temporary positive effect on the plost-ischaemic leukocyte-endothelial interactions. CONCLUSIONS Intraoperative administration of sildenafil during surgical detorsion may provide marked testicular microperfusion benefits, but failed to influence the overall leukocyte-driven microcirculatory inflammatory reactions.
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Affiliation(s)
- Márton Oroszi
- Department of Urology, Szent-Györgyi Albert Medical and Pharmaceutical Center, University of Szeged, Kálvária sgt. 57, Szeged, 6725, Hungary.
| | - Andrea Szabó
- Institute of Surgical Research, Szent-Györgyi Albert Medical and Pharmaceutical Center, University of Szeged, Szőkefalvi-Nagy Béla street 6., Szeged, 6720, Hungary
| | - Ádám Miklós Fehér
- Department of Urology, Szent-Györgyi Albert Medical and Pharmaceutical Center, University of Szeged, Kálvária sgt. 57, Szeged, 6725, Hungary
| | - Gábor Deák
- Department of Urology, Szent-Györgyi Albert Medical and Pharmaceutical Center, University of Szeged, Kálvária sgt. 57, Szeged, 6725, Hungary
| | - Zoltán Bajory
- Department of Urology, Szent-Györgyi Albert Medical and Pharmaceutical Center, University of Szeged, Kálvária sgt. 57, Szeged, 6725, Hungary
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10
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Estevão-Silva CF, Ames FQ, Silva-Comar FMDS, Kummer R, Tronco RP, Cuman RKN, Bersani-Amado CA. Fish Oil and Adjuvant-Induced Arthritis: Inhibitory Effect on Leukocyte Recruitment. Inflammation 2016; 39:320-326. [PMID: 26378008 DOI: 10.1007/s10753-015-0252-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Fish oil, a rich source of n-3 fatty acids, has been studied for its beneficial effects in many diseases. Recent studies have shown the robust anti-inflammatory activity of fish oil (FO), when administered orally to rats, in models of acute inflammation. Herein, we investigated if treatment with fish oil preparation (FOP) could interfere with the recruitment of leukocytes into the joint cavity of arthritic rats. We also evaluated the effect of treatment on rolling behavior and leukocyte adhesion in vivo and on leukocyte chemotaxis in vitro. Treatment with FOP (75, 150, and 300 mg/kg) initiated on the day of induction of arthritis (day 0) and maintained for 21 days reduced the total number of leukocytes recruited into the joint cavity, the number of rolling and adhered leukocytes in arthritic rats, and leukocyte migration in response to stimulation with N-formyl-methionyl-leucyl-phenylalanine (fMLP) and leukotriene B4 (LTB4). Together, our data provide evidence that FOP plays an important inhibitory role in the recruitment of leukocytes into the joint cavity of arthritic rats.
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Affiliation(s)
| | - Franciele Queiroz Ames
- Department of Pharmacology and Therapeutics, State University of Maringá, Maringá, PR, Brazil
| | | | - Raquel Kummer
- Department of Pharmacology and Therapeutics, State University of Maringá, Maringá, PR, Brazil
| | - Rafael Prizon Tronco
- Department of Pharmacology and Therapeutics, State University of Maringá, Maringá, PR, Brazil
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Ni X, Geller EB, Eppihimer MJ, Eisenstein TK, Adler MW, Tuma RF. Win 55212-2, a cannabinoid receptor agonist, attenuates leukocyte/endothelial interactions in an experimental autoimmune encephalomyelitis model. Mult Scler 2016; 10:158-64. [PMID: 15124761 DOI: 10.1191/1352458504ms1009oa] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Multiple sclerosis (MS) is the most common of the immune demyelinating disorders of the central nervous system (C NS). Leukocyte/endothelial interactions are important steps in the progression of the disease and substances that interfere with these activities have been evaluated as potential therapeutic agents. C annabinoid receptor agonists have been shown to downregulate immune responses and there is preliminary evidence that they may slow the progress of MS. The purpo se of this investigation was to determine how cannabinoid recepto r agonists interfere with leukocyte rolling and adhesion. This was investigated in an experimental autoimmune encephalo myelitis (EAE) model using six to eight week old C 57BL/6 mice. Mouse myelin oligodendrocyte protein and pertussis toxin were used to induce EAE. WIN 55212-2, C B1 and C B2 antagonist were given. By use of in vivo intravital microscopy, leukocyte/endothelial interactio ns were evaluated via a cranial window implanted two days before. The results demonstrated that EAE increases leukocyte rolling and firm adhesion in the brain, and that this increased leukocyte/endothelial interactio n can be attenuated by administration of WIN 55212-2. Furthermore, use of the selective antagonists for the C B1 recepto r (SR 141716A) and the C B2 receptor (SR144528) in this study demonstrated that the cannabinoid’s inhibitory effects on leukocyte/endothelial interactions can be mediated by activating C B2 receptor.
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MESH Headings
- Animals
- Benzoxazines
- Calcium Channel Blockers/pharmacology
- Cell Adhesion/drug effects
- Cell Adhesion/immunology
- Cell Communication/drug effects
- Disease Models, Animal
- Encephalomyelitis, Autoimmune, Experimental/drug therapy
- Encephalomyelitis, Autoimmune, Experimental/immunology
- Encephalomyelitis, Autoimmune, Experimental/pathology
- Endothelium, Vascular/cytology
- Female
- Leukocyte Rolling/drug effects
- Leukocytes/cytology
- Mice
- Mice, Inbred C57BL
- Morpholines/pharmacology
- Multiple Sclerosis/drug therapy
- Multiple Sclerosis/immunology
- Naphthalenes/pharmacology
- Paralysis/drug therapy
- Paralysis/immunology
- Paralysis/pathology
- Receptor, Cannabinoid, CB1/agonists
- Receptor, Cannabinoid, CB2/agonists
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Affiliation(s)
- Xiang Ni
- Department of Physiology, Temple University, 3420 N. Broad Street, Philadelphia, PA 19140, USA
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12
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Vaz ER, Fujimura PT, Araujo GR, da Silva CAT, Silva RL, Cunha TM, Lopes-Ferreira M, Lima C, Ferreira MJ, Cunha-Junior JP, Taketomi EA, Goulart LR, Ueira-Vieira C. A Short Peptide That Mimics the Binding Domain of TGF-β1 Presents Potent Anti-Inflammatory Activity. PLoS One 2015; 10:e0136116. [PMID: 26312490 PMCID: PMC4552549 DOI: 10.1371/journal.pone.0136116] [Citation(s) in RCA: 10] [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: 05/15/2015] [Accepted: 07/29/2015] [Indexed: 12/30/2022] Open
Abstract
The transforming growth factor beta 1 (TGF-β1) is a pleiotropic cytokine with multiple roles in development, wound healing, and immune regulation. TGF-β1-mediated immune dysfunction may lead to pathological conditions, such as inflammation. Chronic inflammatory process is characterized by a continuous release of pro-inflammatory cytokines, and the inhibition or the blockage of these cytokines signaling pathways are considered a target treatment. In this context, despite the high numbers of TGF-β-targeted pathways, the inducible regulatory T cells (iTreg) to control inflammation seems to be a promising approach. Our aim was to develop novel peptides through phage display (PhD) technology that could mimic TGF-β1 function with higher potency. Specific mimetic peptides were obtained through a PhD subtraction strategy from whole cell binding using TGF-β1 recombinant as a competitor during elution step. We have selected a peptide that seems to play an important role on cellular differentiation and modulation of TNF-α and IL-10 cytokines. The synthetic pm26TGF-β1 peptide tested in PBMC significantly down-modulated TNF-α and up-regulated IL-10 responses, leading to regulatory T cells (Treg) phenotype differentiation. Furthermore, the synthetic peptide was able to decrease leukocytes rolling in BALB/C mice and neutrophils migration during inflammatory process in C57BL/6 mice. These data suggest that this peptide may be useful for the treatment of inflammatory diseases, especially because it displays potent anti-inflammatory properties and do not exhibit neutrophils’ chemoattraction.
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Affiliation(s)
- Emília R. Vaz
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- * E-mail:
| | - Patrícia T. Fujimura
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Galber R. Araujo
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Carlos A. T. da Silva
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Rangel L. Silva
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Thiago M. Cunha
- Department of Pharmacology, School of Medicine of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Mônica Lopes-Ferreira
- Immunoregulation Unit, Special Laboratory of Applied Toxicology (CEPID/FAPESP), Butantan Institute, São Paulo, São Paulo State, Brazil
| | - Carla Lima
- Immunoregulation Unit, Special Laboratory of Applied Toxicology (CEPID/FAPESP), Butantan Institute, São Paulo, São Paulo State, Brazil
| | - Márcio J. Ferreira
- Immunoregulation Unit, Special Laboratory of Applied Toxicology (CEPID/FAPESP), Butantan Institute, São Paulo, São Paulo State, Brazil
| | - Jair P. Cunha-Junior
- Laboratory of Immunotechnology and Immunochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Ernesto A. Taketomi
- Laboratory of Immunotechnology and Immunochemistry, Institute of Biomedical Sciences, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
| | - Luiz R. Goulart
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
- Department of Medical Microbiology and Immunology, University of California Davis, Davis, CA, United States of America
| | - Carlos Ueira-Vieira
- Laboratory of Nanobiotechnology Institute of Genetics and Biochemistry, Federal University of Uberlândia, Uberlândia, Minas Gerais, Brazil
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13
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Belcher JD, Chen C, Nguyen J, Abdulla F, Nguyen P, Nguyen M, Okeley NM, Benjamin DR, Senter PD, Vercellotti GM. The fucosylation inhibitor, 2-fluorofucose, inhibits vaso-occlusion, leukocyte-endothelium interactions and NF-ĸB activation in transgenic sickle mice. PLoS One 2015; 10:e0117772. [PMID: 25706118 PMCID: PMC4338063 DOI: 10.1371/journal.pone.0117772] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [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: 08/12/2014] [Accepted: 12/30/2014] [Indexed: 02/02/2023] Open
Abstract
2-Fluorofucose (2FF) blocks the fucosylation and the tethering of sialyl-Lewisx tetrasaccharide and structural variants on leukocytes and red blood cells to P- and E-selectins on activated endothelial cell surfaces. Because P- and E-selectin are required for vaso-occlusion in murine sickle cell disease (SCD), we investigated whether 2FF would inhibit vaso-occlusion in SCD mice. Microvascular stasis was measured in subcutaneous venules in NY1DD and HbSS-Townes SCD mice with dorsal skin-fold chambers after infusion of hemoglobin or exposure to hypoxia/reoxygenation. 2FF in drinking water or administered by gavage inhibited stasis in sickle mice in a dose-responsive manner. Significant inhibitory effects on stasis were seen 1 day post-treatment. 2FF treatment of SCD mice also significantly reduced leukocyte rolling and adhesion along the vessel walls of SCD mice and the static adhesion of neutrophils and sickle red blood cells isolated from 2FF-treated SCD mice to resting and activated endothelial cells. Total white blood cell counts increased in response to 2FF. NF-ĸB activation and VCAM-1 and E-selectin expression were inhibited in the livers of SCD mice consistent with an overall decrease in vascular inflammation and ischemia-reperfusion physiology. Pretreatment with 2FF completely eliminated heme-induced lethality in HbSS-Townes mice, consistent with the observed anti-inflammatory and anti-adhesive properties of 2FF in SCD mice. These data suggest that 2FF may be beneficial for preventing or treating vaso-occlusive crises in SCD patients.
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Affiliation(s)
- John D. Belcher
- Department of Medicine, Vascular Biology Center, Division of Hematology, Oncology and Transplantation, Minneapolis, Minnesota, United States of America
- * E-mail:
| | - Chunsheng Chen
- Department of Medicine, Vascular Biology Center, Division of Hematology, Oncology and Transplantation, Minneapolis, Minnesota, United States of America
| | - Julia Nguyen
- Department of Medicine, Vascular Biology Center, Division of Hematology, Oncology and Transplantation, Minneapolis, Minnesota, United States of America
| | - Fuad Abdulla
- Department of Medicine, Vascular Biology Center, Division of Hematology, Oncology and Transplantation, Minneapolis, Minnesota, United States of America
| | - Phong Nguyen
- Department of Medicine, Vascular Biology Center, Division of Hematology, Oncology and Transplantation, Minneapolis, Minnesota, United States of America
| | - Minh Nguyen
- Department of Medicine, Vascular Biology Center, Division of Hematology, Oncology and Transplantation, Minneapolis, Minnesota, United States of America
| | - Nicole M. Okeley
- Seattle Genetics, Inc., Bothell, Washington, United States of America
| | | | - Peter D. Senter
- Seattle Genetics, Inc., Bothell, Washington, United States of America
| | - Gregory M. Vercellotti
- Department of Medicine, Vascular Biology Center, Division of Hematology, Oncology and Transplantation, Minneapolis, Minnesota, United States of America
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14
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Pircher J, Czermak T, Merkle M, Mannell H, Krötz F, Ribeiro A, Vielhauer V, Nadjiri J, Gaitzsch E, Niemeyer M, Porubsky S, Gröne HJ, Wörnle M. Hepatitis C virus induced endothelial inflammatory response depends on the functional expression of TNFα receptor subtype 2. PLoS One 2014; 9:e113351. [PMID: 25419735 PMCID: PMC4242623 DOI: 10.1371/journal.pone.0113351] [Citation(s) in RCA: 15] [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: 08/14/2014] [Accepted: 10/22/2014] [Indexed: 12/20/2022] Open
Abstract
In hepatitis C virus (HCV) infection, morbidity and mortality often result from extrahepatic disease manifestations. We provide evidence for a role of receptors of the innate immune system in virally induced inflammation of the endothelium in vitro and in vivo. Corresponding to the in vitro finding of an HCV-dependent induction of proinflammatory mediators in endothelial cells, mice treated with poly (I:C) exhibit a significant reduction in leukocyte rolling velocity, an increase in leukocyte adhesion to the vessel wall and an increased extravasation of leukocytes. HCV directly promotes activation, adhesion and infiltration of inflammatory cells into the vessel wall by activation of endothelial viral receptors. Poly (I:C) induces the expression of TLR3 in vivo and hereby allows for amplification of all of the aforementioned responses upon viral infection. Proinflammatory effects of viral RNA are specifically mediated by TLR3 and significantly enhanced by tumor necrosis factor alpha (TNFα). HCV-RNA induces the endothelial expression of TNFα and TNFα receptor subtype 2 and we provide evidence that leucocyte adhesion and transmigration in response to activation of viral RNA receptors seem to depend on expression of functional TNFR2. Our results demonstrate that endothelial cells actively participate in immune mediated vascular inflammation caused by viral infections.
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Affiliation(s)
- Joachim Pircher
- Medizinische Klinik und Poliklinik I, Klinikum der Universität München, München, Germany
- Walter Brendel Centre of Experimental Medicine and Munich Heart Alliance, Ludwig Maximilians University München, München, Germany
| | - Thomas Czermak
- Walter Brendel Centre of Experimental Medicine and Munich Heart Alliance, Ludwig Maximilians University München, München, Germany
- Medizinische Klinik und Poliklinik IV, Innenstadt, Klinikum der Universität München, München, Germany
| | - Monika Merkle
- Medizinische Klinik und Poliklinik IV, Innenstadt, Klinikum der Universität München, München, Germany
| | - Hanna Mannell
- Walter Brendel Centre of Experimental Medicine and Munich Heart Alliance, Ludwig Maximilians University München, München, Germany
| | - Florian Krötz
- Walter Brendel Centre of Experimental Medicine and Munich Heart Alliance, Ludwig Maximilians University München, München, Germany
| | - Andrea Ribeiro
- Medizinische Klinik und Poliklinik IV, Innenstadt, Klinikum der Universität München, München, Germany
| | - Volker Vielhauer
- Medizinische Klinik und Poliklinik IV, Innenstadt, Klinikum der Universität München, München, Germany
| | - Jonathan Nadjiri
- Medizinische Klinik und Poliklinik IV, Innenstadt, Klinikum der Universität München, München, Germany
| | - Erik Gaitzsch
- Walter Brendel Centre of Experimental Medicine and Munich Heart Alliance, Ludwig Maximilians University München, München, Germany
- Medizinische Klinik und Poliklinik IV, Innenstadt, Klinikum der Universität München, München, Germany
| | - Markus Niemeyer
- Department of Gynecology, Klinikum rechts der Isar, Technische Universität München, München, Germany
| | | | | | - Markus Wörnle
- Medizinische Klinik und Poliklinik IV, Innenstadt, Klinikum der Universität München, München, Germany
- * E-mail:
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15
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Brookes ZLS, Stedman EN, Brown NJ, Hebbes CP, Guerrini R, Calo G, Reilly CS, Lambert DG. The nociceptin/orphanin FQ receptor antagonist UFP-101 reduces microvascular inflammation to lipopolysaccharide in vivo. PLoS One 2013; 8:e74943. [PMID: 24086402 PMCID: PMC3781147 DOI: 10.1371/journal.pone.0074943] [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: 05/14/2013] [Accepted: 08/07/2013] [Indexed: 12/23/2022] Open
Abstract
Microvascular inflammation occurs during sepsis and the endogenous opioid-like peptide nociceptin/orphanin FQ (N/OFQ) is known to regulate inflammation. This study aimed to determine the inflammatory role of N/OFQ and its receptor NOP (ORL1) within the microcirculation, along with anti-inflammatory effects of the NOP antagonist UFP-101 (University of Ferrara Peptide-101) in an animal model of sepsis (endotoxemia). Male Wistar rats (220 to 300 g) were administered lipopolysaccharide (LPS) for 24 h (-24 h, 1 mg kg(-1); -2 h, 1 mg kg(-1) i.v., tail vein). They were then either anesthetised for observation of the mesenteric microcirculation using fluorescent in vivo microscopy, or isolated arterioles (~200 µm) were studied in vitro with pressure myography. 200 nM kg(-1) fluorescently labelled N/OFQ (FITC-N/OFQ, i.a., mesenteric artery) bound to specific sites on the microvascular endothelium in vivo, indicating sparse distribution of NOP receptors. In vitro, arterioles (~200 µm) dilated to intraluminal N/OFQ (10(-5)M) (32.6 + 8.4%) and this response was exaggerated with LPS (62.0 +7.9%, p=0.031). In vivo, LPS induced macromolecular leak of FITC-BSA (0.02 g kg(-1) i.v.) (LPS: 95.3 (86.7 to 97.9)%, p=0.043) from post-capillary venules (<40 µm) and increased leukocyte rolling as endotoxemia progressed (p=0.027), both being reduced by 150 nmol kg(-1) UFP-101 (i.v., jugular vein). Firstly, the rat mesenteric microcirculation expresses NOP receptors and secondly, NOP function (ability to induce dilation) is enhanced with LPS. UFP-101 also reduced microvascular inflammation to endotoxemia in vivo. Hence inhibition of the microvascular N/OFQ-NOP pathway may have therapeutic potential during sepsis and warrants further investigation.
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Affiliation(s)
- Zoë L. S. Brookes
- Microcirculation Research Group, Department of Cardiovascular Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Emily N. Stedman
- Microcirculation Research Group, Department of Cardiovascular Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Nicola J. Brown
- Microcirculation Research Group, Department of Cardiovascular Sciences, University of Sheffield, Sheffield, United Kingdom
| | - Christopher P. Hebbes
- Department of Cardiovascular Sciences, Division of Anaesthesia, Critical Care and Pain Management, University of Leicester, Leicester Royal Infirmary, Leicester, United Kingdom
| | - Remo Guerrini
- Department of Pharmaceutical Sciences and Biotechnology Center, University of Ferrara, Ferrara, Italy
| | - Girolamo Calo
- Department of Pharmaceutical Sciences and Biotechnology Center, University of Ferrara, Ferrara, Italy
- Department of Experimental and Clinical Medicine, Section of Pharmacology, University of Ferrara and Italian Institute of Neuroscience, Ferrara, Italy
| | - Charles S. Reilly
- Microcirculation Research Group, Department of Cardiovascular Sciences, University of Sheffield, Sheffield, United Kingdom
| | - David G. Lambert
- Department of Cardiovascular Sciences, Division of Anaesthesia, Critical Care and Pain Management, University of Leicester, Leicester Royal Infirmary, Leicester, United Kingdom
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16
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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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17
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Kampmann A, Lindhorst D, Schumann P, Zimmerer R, Kokemüller H, Rücker M, Gellrich NC, Tavassol F. Additive effect of mesenchymal stem cells and VEGF to vascularization of PLGA scaffolds. Microvasc Res 2013; 90:71-9. [PMID: 23899416 DOI: 10.1016/j.mvr.2013.07.006] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 07/05/2013] [Accepted: 07/17/2013] [Indexed: 11/20/2022]
Abstract
Bone marrow derived mesenchymal stem cells (bmMSCs) are widely used for the generation of tissue engineering constructs, since they can differentiate into different cell types occurring in bone tissues. Until now their use for the generation of tissue engineering constructs is limited. All cells inside a tissue engineering construct die within a short period of time after implantation of the construct because vascularization and establishment of connections to the recipient circulatory system is a time consuming process. We therefore compared the influences of bmMSC, VEGF and a combination of both on the early processes of vascularization, utilizing the mice skinfold chamber model and intravital fluorescence microscopy. Tissue engineering constructs based on collagen coated Poly d,l-lactide-co-glycolide (PLGA) scaffolds, were either functionalized by coating with vascular endothelial growth factor (VEGF) or vitalized with bmMSC. PLGA without cells and growth factor was used as the control group. Functionalized and vitalized tissue engineering constructs showed an accelerated growth of microvessels compared to controls. Only marginal differences in vascular growth were detected between VEGF containing and bmMSC containing constructs. Constructs containing VEGF and bmMSC showed a further enhanced microvascular growth at day 14. We conclude that bmMSCs are well suited for bone tissue engineering applications, since they are a valuable source of angiogenic growth factors and are able to differentiate into the tissue specific cell types of interest. The dynamic process of vascularization triggered by growth factor producing cells can be amplified and stabilized with the addition of accessory growth factors, leading to a persisting angiogenesis, but strategies are needed that enhance the resistance of bmMSC to hypoxia and increase survival of these cells until the tissue engineering construct has build up a functional vascular system.
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Affiliation(s)
- Andreas Kampmann
- Department of Oral and Maxillofacial Surgery, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625 Hannover, Germany.
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Du WY, Chang C, Zhang Y, Liu YY, Sun K, Wang CS, Wang MX, Liu Y, Wang F, Fan JY, Li PT, Han JY. High-dose chlorogenic acid induces inflammation reactions and oxidative stress injury in rats without implication of mast cell degranulation. J Ethnopharmacol 2013; 147:74-83. [PMID: 23473868 DOI: 10.1016/j.jep.2013.01.042] [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] [Subscribe] [Scholar Register] [Received: 09/30/2012] [Revised: 12/23/2012] [Accepted: 01/28/2013] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Chlorogenic acid (CA) exits widely in those Chinese herbal injections that have antibacterial and antiphlogistic effects and belongs to the ethnopharmacological family of medicines. Chinese herbal injections containing high levels of CA have been reported to increase the adverse drug reactions, but the mechanism for which is still unclear. In this study, we investigated the mechanism of the CA derived adverse drug reactions. AIM OF THE STUDY The present study was to explore the potential role of CA in initiating inflammatory reaction and the underlying mechanism. MATERIALS AND METHODS Male Wistar rats were treated with different dosages of CA for different time period. The variables examined included microcirculation by intravital microscopy, histology of ileum tissue, expression of adhesion molecules CD11b and CD18 on leukocytes by flow cytometry, myeloperoxidase activity and maleic dialdehyde content in ileum tissue by spectrophotometry, activity of superoxide dismutase and catalase in serum by ELISA, and expression of NADPH oxidase subunits by PCR and Western blot. RESULTS High-dose CA increased the number of adherent leukocytes, generation of peroxides in the venular walls and induced albumin leakage from mesentery venules. High-dose CA induced changes also included an increase in maleic dialdehyde, myeloperoxidase, inflammatory cytokines and NADPH oxidase activities, and a decline in activity of superoxide dismutase and catalase. CONCLUSION High-dose, but not Low-dose CA induced inflammation reaction, and in this process an imbalance between oxidant and antioxidant mechanism may be involved, providing more information for better understanding the rationale behind the adverse effects of CA.
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Affiliation(s)
- Wen-Yuan Du
- Department of Pathology, School of Preclinical Medicine, Beijing University of Chinese Medicine, Beijing, China
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Kim E, Schueller O, Sweetnam PM. Targeting the leukocyte activation cascade: getting to the site of inflammation using microfabricated assays. Lab Chip 2012; 12:2255-2264. [PMID: 22437145 DOI: 10.1039/c2lc21078a] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
This paper describes the use of microfabricated devices to study the leukocyte activation cascade (LAC). The devices consist of microchannels fabricated in polydimethylsiloxane using soft lithography. Microfluidics, used to generate physiologically relevant levels of shear flow, was achieved by the simple attachment of a syringe pump. Microchannel surfaces were modified by self-assembled monolayer (SAM) chemistries. The devices were adapted to standard 96-well tissue culture format with microchannels that could accommodate either a monolayer of endothelial cells or a SAM with immobilized chemokines. Chemotaxis was performed using linear gradients of chemokine set in a 3D matrix. Using this approach, we demonstrated robust chemotaxis of primary human leukocytes (PHLs) in response to a gradient of the chemokine CCL2. Rolling and adhesion assays performed under shear flow demonstrated that leukocyte recruitment to the substrate was highly sensitive to both biological and physical forces. CCL2 and CXCL12 treatment of PHLs dose dependently increased activation and adhesion. These actions could be inhibited by the use of peptide or small molecule antagonists. These devices provide a robust platform to perform LAC assays under in vivo-like conditions.
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20
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Utzschneider S, Becker F, Grupp TM, Sievers B, Paulus A, Gottschalk O, Jansson V. Inflammatory response against different carbon fiber-reinforced PEEK wear particles compared with UHMWPE in vivo. Acta Biomater 2010; 6:4296-304. [PMID: 20570640 DOI: 10.1016/j.actbio.2010.06.002] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [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: 01/26/2010] [Revised: 05/29/2010] [Accepted: 06/01/2010] [Indexed: 11/29/2022]
Abstract
Poly(ether ether ketone) (PEEK) and its composites are recognized as alternative bearing materials for use in arthroplasty because of their mechanical properties. The objective of this project was to evaluate the biological response of two different kinds of carbon fiber-reinforced (CFR) PEEK compared with ultra-high molecular weight polyethylene (UHMWPE) in vivo as a standard bearing material. Wear particles of the particulate biomaterials were injected into the left knee joint of female BALB/c mice. Assessment of the synovial microcirculation using intravital fluorescence microscopy as well as histological evaluation of the synovial layer were performed 7 days after particle injection. Enhanced leukocyte-endothelial cell interactions and an increase in functional capillary density as well as histological investigations revealed that all tested biomaterials caused significantly (P < 0.05) increased inflammatory reactions compared with control animals (injected with sterile phosphate-buffered saline), without any difference between the tested biomaterials (P > 0.05). These data suggest that wear debris of CFR-PEEK is comparable with UHMWPE in its biological activity. Therefore, CFR-PEEK represents an alternative bearing material because of its superior mechanical and chemical behavior without any increased biological activity of the wear particles, compared with a standard bearing material.
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Affiliation(s)
- Sandra Utzschneider
- Orthopedic Department, Ludwig-Maximilians-University, Campus Großhadern, Marchioninistraße 15, 81377 Munich, Germany.
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21
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Sun K, Hu Q, Zhou CM, Xu XS, Wang F, Hu BH, Zhao XY, Chang X, Chen CH, Huang P, An LH, Liu YY, Fan JY, Wang CS, Yang L, Han JY. Cerebralcare Granule, a Chinese herb compound preparation, improves cerebral microcirculatory disorder and hippocampal CA1 neuron injury in gerbils after ischemia-reperfusion. J Ethnopharmacol 2010; 130:398-406. [PMID: 20580803 DOI: 10.1016/j.jep.2010.05.030] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/08/2010] [Revised: 05/13/2010] [Accepted: 05/17/2010] [Indexed: 05/29/2023]
Abstract
AIM OF THE STUDY Cerebralcare Granule (CG) is a Chinese herb compound preparation that has been used for treatment of cerebrovascular related diseases. However, the effect of post-treatment with CG on ischemia and reperfusion (I/R) induced cerebral injury is so far unclear. MATERIALS AND METHODS In present study, cerebral global I/R was induced in Mongolian gerbils by clamping bilateral carotid arteries for 30 min followed by reperfusion for 5 days, and CG (0.4 g/kg or 0.8 g/kg) was administrated 3h after the initiation of reperfusion. RESULTS Post-treatment with CG for 5 days attenuated the I/R-induced production of hydrogen peroxide in, leukocyte adhesion to, and albumin leakage from cerebral microvessels, and, meanwhile, protected neuron from death, reduced the number of caspase-3- and Bax-positive cells, and increased Bcl-2-positive cells in hippocampal CA1 region. CONCLUSION The results suggest that CG given after initiation of reperfusion is able to ameliorate cerebral microvascular dysfunction and hippocampal CA1 neuron damage caused by I/R.
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Affiliation(s)
- Kai Sun
- Tasly Microcirculation Research Center, Peking University Health Science Center, Beijing, China
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22
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Hortelano S, López-Fontal R, Través PG, Villa N, Grashoff C, Boscá L, Luque A. ILK mediates LPS-induced vascular adhesion receptor expression and subsequent leucocyte trans-endothelial migration. Cardiovasc Res 2010; 86:283-92. [PMID: 20164118 DOI: 10.1093/cvr/cvq050] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIMS The inflammatory response to injurious agents is tightly regulated to avoid adverse consequences of inappropriate leucocyte accumulation or failed resolution. Lipopolysaccharide (LPS)-activated endothelium recruits leucocytes to the inflamed tissue through controlled expression of membrane-associated adhesion molecules. LPS responses in macrophages are known to be regulated by integrin-linked kinase (ILK); in this study, we investigated the role of ILK in the regulation of the LPS-elicited inflammatory response in endothelium. METHODS AND RESULTS This study was performed on immortalized mouse endothelial cells (EC) isolated from lung and coronary vasculature. Cells were thoroughly characterized and the role of ILK in the regulation of the LPS response was investigated by suppressing ILK expression using siRNA and shRNA technologies. Phenotypic and functional analyses confirmed that the immortalized cells behaved as true EC. LPS induced the expression of the inflammatory genes E-selectin, intercellular adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1). ILK knockdown impaired LPS-mediated endothelial activation by preventing the induction of ICAM-1 and VCAM-1. Blockade of the LPS-induced response inhibited the inflammatory-related processes of firm adhesion and trans-endothelial migration of leucocytes. CONCLUSION ILK is involved in the expression of cell adhesion molecules by EC activated with the inflammatory stimulus LPS. This reduced expression modulates leucocyte adhesion to the endothelium and the extravasation process. This finding suggests ILK as a potential anti-inflammatory target for the development of vascular-specific treatments for inflammation-related diseases.
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Affiliation(s)
- Sonsoles Hortelano
- Department of Regenerative Cardiology, Fundación Centro Nacional de Investigaciones Cardiovasculares Carlos III, Melchor Fernandez Almagro 3, E-28029 Madrid, Spain
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23
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Nicolete R, Arakawa NS, Rius C, Nomizo A, Jose PJ, Da Costa FB, Sanz MJ, Faccioli LH. Budlein A from Viguiera robusta inhibits leukocyte-endothelial cell interactions, adhesion molecule expression and inflammatory mediators release. Phytomedicine 2009; 16:904-915. [PMID: 19524419 DOI: 10.1016/j.phymed.2009.04.002] [Citation(s) in RCA: 10] [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] [Received: 01/31/2009] [Revised: 03/20/2009] [Accepted: 04/21/2009] [Indexed: 05/27/2023]
Abstract
Budlein A has been reported to exert some analgesic and anti-inflammatory properties. In this study, we have evaluated its effect on LPS-induced leukocyte recruitment in vivo and the mechanisms involved in its anti-inflammatory activity. In vivo, intravital videomicroscopy was used to determine the effects of budlein A on LPS-induced leukocyte-endothelial cell interactions in the murine cremasteric microcirculation. In vitro, the effects of budlein A on LPS-induced cytokine, chemokine and nitrites release, T-cell proliferative response as well as cell adhesion molecule expression (CAM) were evaluated. In vivo, intraperitoneal administration of budlein A (2.6 mM/kg) caused a significant reduction of LPS-induced leukocyte rolling flux, adhesion and emigration by 84, 92 and 96% respectively. In vitro, T-cell proliferative response was also affected by budlein A. When murine J774 macrophages were incubated with the sesquiterpene lactone, LPS-induced IL-1beta, tumor necrosis factor-alpha (TNF-alpha) and keratinocyte-derived chemokine (KC) release were concentration-dependently inhibited. In human umbilical vein endothelial cells (HUVECs), budlein A also reduced the production of TNF-alpha, monocyte chemoattractant protein-1 (MCP-1), IL-8, nitrites and CAM expression elicited by LPS. Budlein A is a potent inhibitor of LPS-induced leukocyte accumulation in vivo. This effect appears to be mediated through inhibition of cytokine and chemokine release and down-regulation of CAM expression. Thus, it has potential therapeutic interest for the control of leukocyte recruitment that occurs in different inflammatory disorders.
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Affiliation(s)
- Roberto Nicolete
- Departamento de Análises Clínicas, Toxicológicas e Bromatológicas, Faculdade de Ciências Farmacêuticas de Ribeirão Preto, Universidade de São Paulo, Av. do Café s/n, 14040-903 Ribeirão Preto, Brazil
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24
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Ramos MV, Oliveira JS, Figueiredo JG, Figueiredo IST, Kumar VL, Bitencourt FS, Cunha FQ, Oliveira RSB, Bomfim LR, Vitor Lima-Filho J, Alencar NMN. Involvement of NO in the inhibitory effect of Calotropis procera latex protein fractions on leukocyte rolling, adhesion and infiltration in rat peritonitis model. J Ethnopharmacol 2009; 125:387-392. [PMID: 19647058 DOI: 10.1016/j.jep.2009.07.030] [Citation(s) in RCA: 22] [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] [Subscribe] [Scholar Register] [Received: 03/16/2009] [Revised: 06/26/2009] [Accepted: 07/22/2009] [Indexed: 05/28/2023]
Abstract
AIM OF THE STUDY The latex of Calotropis procera has been used in the traditional medicinal system for the treatment of leprosy, ulcers, tumors, piles and diseases of liver, spleen, abdomen and toothache. It comprises of a non-dialyzable protein fraction (LP) that exhibits anti-inflammatory properties and a dialyzable fraction (DF) exhibiting pro-inflammatory properties. The present study was carried out to evaluate the effect of LP sub-fractions on neutrophil functions and nociception in rodent models and to elucidate the mediatory role of nitric oxide (NO). MATERIAL AND METHODS The LP was subjected to ion exchange chromatography and the effect of its three sub-fractions (LP(PI), LP(PII) and LP(PIII)) thus obtained was evaluated on leukocyte functions in the rat peritonitis model and on nociception in the mouse model. RESULTS LP sub-fractions exhibit distinct protein profile and produce a significant decrease in the carrageenan and DF induced neutrophil influx and exhibit anti-nociceptive property. The LP and its sub-fractions produced a marked reduction in the number of rolling and adherent leukocytes in the mesenteric microvasculature as revealed by intravital microscopy. The anti-inflammatory effect of LP(PI), the most potent anti-inflammatory fraction of LP, was accompanied by an increase in the serum levels of NO. Further, our study shows that NO is also involved in the inhibitory effect of LP(PI) on neutrophil influx. CONCLUSIONS Our study shows that LP fraction of Calotropis procera comprises of three distinct sets of proteins exhibiting anti-inflammatory and anti-nociceptive properties of which LP(PI) was most potent in inhibiting neutrophil functions and its effects are mediated through NO production.
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Affiliation(s)
- Márcio V Ramos
- Departamento de Bioquímica de Biologia Molecular, Universidade Federal do Ceará, Campus do Pici, Cx. Postal 6033, Fortaleza-Ce Brasil, CEP 60451-970, Brazil.
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25
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Stokes KY, Dugas TR, Tang Y, Garg H, Guidry E, Bryan NS. Dietary nitrite prevents hypercholesterolemic microvascular inflammation and reverses endothelial dysfunction. Am J Physiol Heart Circ Physiol 2009; 296:H1281-8. [PMID: 19252084 DOI: 10.1152/ajpheart.01291.2008] [Citation(s) in RCA: 131] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The nitrite anion is an endogenous product of mammalian nitric oxide (NO) metabolism, a key intermediate in the nitrogen cycle in plants, and a constituent of many foods. Research over the past 6 years has revealed surprising biological and cytoprotective activity of this anion. Hypercholesterolemia causes a proinflammatory phenotype in the microcirculation. This phenotype appears to result from a decline in NO bioavailability that results from a reduction in NO biosynthesis, inactivation of NO by superoxide, or both. Since nitrite has been shown to be potently cytoprotective and restore NO biochemical homeostasis, we investigated if supplemental nitrite could attenuate microvascular inflammation caused by a high cholesterol diet. C57Bl/6J mice were fed either a normal diet or a high cholesterol diet for 3 wk to induce microvascular inflammation. Mice on the high cholesterol diet received either nitrite-free drinking water or supplemental nitrite at 33 or 99 mg/l ad libitum in their drinking water. The results from this investigation reveal that mice fed a cholesterol-enriched diet exhibited significantly elevated leukocyte adhesion to and emigration through the venular endothelium as well as impaired endothelium-dependent relaxation in arterioles. Administration of nitrite in the drinking water inhibited the leukocyte adhesion and emigration and prevented the arteriolar dysfunction. This was associated with sparing of reduced tetrahydrobiopterin and decreased levels of C-reactive protein. These data reveal novel anti-inflammatory properties of nitrite and implicate the use of nitrite as a new natural therapy for microvascular inflammation and endothelial dysfunction associated with hypercholesterolemia.
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Affiliation(s)
- Karen Y Stokes
- Department of Molecular and Cellular Physiology, Brown Foundation Institute of Molecular Medicine, The Univ. of Texas-Houston Health Science Center, 1825 Pressler St., SRB 530B, Houston, TX 77030, USA
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26
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Montaigne D, Marechal X, Lancel S, Decoster B, Asseman P, Neviere R. The synthetic pentasaccharide fondaparinux prevents coronary microvascular injury and myocardial dysfunction in the ischemic heart. Thromb Haemost 2008; 100:912-919. [PMID: 18989538] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Fondaparinux is a synthetic pentasaccharide with powerful anticoagulant properties, which may also reduce ischemia-reperfusion (I/R) injury in vivo. However, the relative contributions of the anticoagulant and anti-inflammatory activities of fondaparinux to the observed protection are unknown. To address this issue, a crystalloid-perfused heart model was used to assess potential effects of fondaparinux on IR-induced heart injury in the absence of blood. Fondaparinux protects the ischemic myocardium independently of its haemostasis effects. Fondaparinux improved post ischemic myocardial contractile performance and tissue damage. These beneficial effects of fondaparinux may be related to the observed reduction in IR-induced oxidative stress and endothelial activation. In addition, fondaparinux altered NADPH oxidase activity and phosphorylated extracellular signal-regulated kinase (ERK) 1/2, suggesting activation of survival signaling pathways. The present study provides novel information by demonstrating that fondaparinux can attenuate inflammatory responses and oxidative stress in connection with IR heart injury. These findings could represent a potential therapeutic strategy for the prevention of myocardial dysfunction.
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Affiliation(s)
- David Montaigne
- EA 2689, IMPRT -IFR114, Département de Physiologie, Faculté de Médecine, Université de Lille 2, Lille Cedex 59045 France
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27
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Norman MU, Zbytnuik L, Kubes P. Interferon-gamma limits Th1 lymphocyte adhesion to inflamed endothelium: a nitric oxide regulatory feedback mechanism. Eur J Immunol 2008; 38:1368-80. [PMID: 18412158 DOI: 10.1002/eji.200737847] [Citation(s) in RCA: 24] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2023]
Abstract
CD4(+) T helper (Th1 and Th2) cell localization to a site of inflammation is important for the development, maintenance and regulation of an immune response. The factors that regulate Th1 and Th2 cell recruitment into tissue are not fully understood. The aim of the present study was to examine the effect of different cytokine microenvironments on the recruitment of Th1 and Th2 lymphocytes into tissue. Fluorescently labelled Th1 or Th2 lymphocyte-endothelial interactions were observed via intravital microscopy of the cytokine-treated cremaster muscle. Our results show that TNF-alpha alone is sufficient to maximally recruit Th1 cells. Surprisingly, treatment with TNF-alpha + IFN-gamma significantly decreased Th1 adhesion and emigration in comparison to TNF-alpha treatment alone. The decreased adhesion of Th1 cells in response to TNF-alpha + IFN-gamma reflected a decreased ability to bind to ICAM-1 and was iNOS-dependent. This phenomenon was not observed with Th2 cells. These results suggest that IFN-gamma may play a key immunomodulatory role in the recruitment of different T lymphocyte subsets. Indeed, blockade of IFN-gamma or iNOS function during the Th1-mediated contact hypersensitivity response resulted in an acceleration and exacerbation of the late-phase inflammatory response.
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Affiliation(s)
- M Ursula Norman
- Immunology Research Group, Department of Physiology and Biophysics, Faculty of Medicine, University of Calgary, Calgary, AB, Canada
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28
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Mestriner FLAC, Spiller F, Laure HJ, Souto FO, Tavares-Murta BM, Rosa JC, Basile-Filho A, Ferreira SH, Greene LJ, Cunha FQ. Acute-phase protein alpha-1-acid glycoprotein mediates neutrophil migration failure in sepsis by a nitric oxide-dependent mechanism. Proc Natl Acad Sci U S A 2007; 104:19595-600. [PMID: 18048324 PMCID: PMC2148334 DOI: 10.1073/pnas.0709681104] [Citation(s) in RCA: 61] [Impact Index Per Article: 3.6] [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: 06/20/2007] [Indexed: 11/18/2022] Open
Abstract
The reduction of circulating neutrophil migration to infection sites is associated with a poor outcome of severe sepsis. alpha-1-Acid glycoprotein (AGP) was isolated from the sera of severely septic patients by HPLC and acrylamide gel electrophoresis and identified by mass spectrometry. Both the isolated protein and commercial AGP inhibited carrageenin-induced neutrophil migration into the rat peritoneal cavity when administered i.v. at a dose of 4.0 microg per rat (95 pmol per rat). Analysis by intravital microscopy demonstrated that both proteins inhibited the rolling and adhesion of leukocytes in the mesenteric microcirculation. The inhibitory activity was blocked by 50 mg/kg aminoguanidine, s.c., and was not demonstrable in inducible nitric oxide synthase (iNOS) knockout mice. Incubation of AGP with neutrophils from healthy subjects induced the production of NO and inhibited the neutrophil chemotaxis by an iNOS/NO/cyclic guanosine 3,5-monophosphate-dependent pathway. In addition, AGP induced the l-selectin shedding by neutrophils. The administration of AGP to rats with mild cecal ligation puncture sepsis inhibited neutrophil migration and reduced 7-day survival from approximately 80% to 20%. These data demonstrate that AGP, an acute-phase protein, inhibits neutrophil migration by an NO-dependent process and suggest that AGP also participates in human sepsis.
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Affiliation(s)
| | | | - H. J. Laure
- Protein Chemistry Center, Faculty of Medicine of Ribeirão Preto, University of São Paulo,14049-900 Ribeirao Preto, São Paulo, Brazil
- Hemocenter Foundation of Ribeirão Preto, 14049-900 Ribeirão Preto, São Paulo, Brazil; and
| | | | - B. M. Tavares-Murta
- Department of Biological Sciences, Federal University of Triângulo Mineiro, 38025-180 Uberaba, Minas Gerais, Brazil
| | - J. C. Rosa
- Cellular and Molecular Biology and Pathogenic Agents, and
- Protein Chemistry Center, Faculty of Medicine of Ribeirão Preto, University of São Paulo,14049-900 Ribeirao Preto, São Paulo, Brazil
- Hemocenter Foundation of Ribeirão Preto, 14049-900 Ribeirão Preto, São Paulo, Brazil; and
| | | | | | - L. J. Greene
- Cellular and Molecular Biology and Pathogenic Agents, and
- Protein Chemistry Center, Faculty of Medicine of Ribeirão Preto, University of São Paulo,14049-900 Ribeirao Preto, São Paulo, Brazil
- Hemocenter Foundation of Ribeirão Preto, 14049-900 Ribeirão Preto, São Paulo, Brazil; and
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Rops AL, van den Hoven MJ, Baselmans MM, Lensen JF, Wijnhoven TJ, van den Heuvel LP, van Kuppevelt TH, Berden JH, van der Vlag J. Heparan sulfate domains on cultured activated glomerular endothelial cells mediate leukocyte trafficking. Kidney Int 2007; 73:52-62. [PMID: 17914352 DOI: 10.1038/sj.ki.5002573] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Heparan sulfate (HS) proteoglycans by playing key roles in the leukocyte-endothelial interactions are thought to mediate inflammatory cell influx in proliferative glomerulonephritis. Here, we evaluated the specific features within glomerular endothelial HS that promote leukocyte adhesion. Mouse and human glomerular endothelial cells activated by tumor necrosis factor (TNF)-alpha or interleukin (IL)-1beta increased expression of inflammatory N- and 6-O-sulfated HS domains. In addition, altered expression of HS-modifying enzymes occurred, a feature also found in mouse kidneys with anti-glomerular basement membrane disease or lupus nephritis. Inhibition of the nuclear factor (NF)-kappaB pathway repressed cytokine-induced alterations in HS and gene expression of modifying enzymes. Firm adhesion of leukocytes to activated mouse glomerular endothelial cells decreased after removal of endothelial HS or addition of sulfated heparinoids. Specific antibodies that block N- and 6-O-sulfated HS domains on activated mouse endothelial cells reduced the number of rolling and firmly adhering leukocytes under dynamic flow conditions, while they increased the average leukocyte-rolling velocity. Our study shows that N- and 6-O-sulfated domains in HS on activated glomerular endothelium are crucial for leukocyte trafficking and are possible therapeutic targets.
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Affiliation(s)
- A L Rops
- Nephrology Research Laboratory, Nijmegen Centre for Molecular Life Sciences, Division of Nephrology, Radboud University Nijmegen Medical Centre, Geert Grooteplein 26, 6525 GA Nijmegen, The Netherlands
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Abstract
Lymphocyte recruitment to sites of inflammation involves a bidirectional series of cues between the endothelial cell (EC) and the leukocyte that culminate in lymphocyte migration into the tissue. Remodeling of the EC F-actin cytoskeleton has been observed after leukocyte adhesion, but the signals to the EC remain poorly defined. We studied the dependence of peripheral blood lymphocyte transendothelial migration (TEM) through an EC monolayer in vitro on EC phosphatidylinositol 3-kinase (PI 3-kinase) activity. Lymphocytes were perfused over cytokine-activated EC using a parallel-plate laminar flow chamber. Inhibition of EC PI 3-kinase activity using LY-294002 or wortmannin decreased lymphocyte TEM (48 +/- 6 or 34 +/- 7%, respectively, vs. control; mean +/- SE; P < 0.05). Similarly, EC knockdown of the p85alpha regulatory subunit of PI 3-kinase decreased lymphocyte transmigration. Treatment of EC with jasplakinolide to inhibit EC F-actin remodeling also decreased lymphocyte TEM to 24 +/- 10% vs. control (P < 0.05). EC PI 3-kinase inhibition did not change the strength of lymphocyte adhesion to the EC or formation of the EC "docking structure" after intercellular adhesion molecule-1 ligation, whereas this was inhibited by jasplakinolide treatment. A similar fraction of lymphocytes migrated on control or LY-294002-treated EC and localized to interendothelial junctions. However, lymphocytes failed to extend processes below the level of vascular endothelial (VE)-cadherin on LY-294002-treated EC. Together these observations indicate that EC PI 3-kinase activity and F-actin remodeling are required during lymphocyte diapedesis and identify a PI 3-kinase-dependent step following initial separation of the VE-cadherin barrier.
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31
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Skitzki JJ, Chen Q, Wang WC, Evans SS. Primary immune surveillance: some like it hot. J Mol Med (Berl) 2007; 85:1361-7. [PMID: 17704903 DOI: 10.1007/s00109-007-0245-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [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: 04/17/2007] [Revised: 06/11/2007] [Accepted: 06/29/2007] [Indexed: 12/29/2022]
Abstract
The thermal element of fever has been found to be beneficial in models of infectious disease. The contributions of fever-range temperatures to the efficacy of the adaptive immune response have only begun to be delineated. There is accumulating evidence that fever-range thermal stress bolsters primary immune surveillance of lymph nodes and Peyer patches by augmenting lymphocyte extravasation across specialized vessels termed high endothelial venules. Molecular mechanisms have recently come to light by which the thermal component of fever alone may promote lymphocyte trafficking, and thereby the probability of mounting a defense against microbial infection. Acquired knowledge of the molecular changes associated with thermal stress may allow for the development of novel therapies for a variety of disease processes.
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Affiliation(s)
- Joseph J Skitzki
- Department of Immunology, Roswell Park Cancer Institute, Elm & Carlton Streets, Buffalo, NY 14263, USA
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Bedke J, Kiss E, Behnes CL, Popovic ZV, Heuser M, Stojanovic T, Sijmonsma T, Huber P, Domhan S, Muschal S, Abdollahi A, Gretz N, Gröne HJ. Anti-inflammatory effects of alphav integrin antagonism in acute kidney allograft rejection. Am J Pathol 2007; 171:1127-39. [PMID: 17702892 PMCID: PMC1988864 DOI: 10.2353/ajpath.2007.070329] [Citation(s) in RCA: 15] [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] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Integrin-mediated cell adhesion and signaling is essential to vascular development and inflammatory processes. Elevated expression of integrin alpha(v)beta(3) has been detected in ischemia-reperfusion injury and rejecting heart allografts. We thus hypothesized that the inhibition of alpha(v)-associated integrins may have potent anti-inflammatory effects in acute kidney allograft rejection. We studied the effects of a peptidomimetic antagonist of alpha(v) integrins in two rat models of renal allotransplantation, differing in degree of major histocompatibility complex mismatch. Integrin alpha(v)beta(3) was up-regulated in rejecting renal allografts. Integrin antagonist reduced the histological signs of acute rejection, the intensity of the mononuclear cell infiltration, and cell proliferation in the grafted kidneys. This could be correlated to a reduced leukocyte-endothelial interaction and an improved peritubular microcirculation observed by intravital microscopy. In vitro under laminar flow conditions, the arrest of monocytes to interleukin-1beta-activated endothelium was decreased. Furthermore, in co-culture models the proliferation and transmigration of monocytes/macrophages, endothelium, and fibroblasts induced by renal tubular epithelia was efficiently inhibited by alpha(v) integrin antagonism. These data reveal an important role of this integrin subclass in leukocyte recruitment and development and maintenance of acute rejection; blockade of alpha(v) integrins may provide a new therapeutic strategy to attenuate acute allograft rejection.
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Affiliation(s)
- Jens Bedke
- Department of Cellular and Molecular Pathology, German Cancer Research Center, Im Neuenheimer Feld 280, D-69120 Heidelberg, Germany
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Rubant SA, Ludwig RJ, Diehl S, Hardt K, Kaufmann R, Pfeilschifter JM, Boehncke WH. Dimethylfumarate reduces leukocyte rolling in vivo through modulation of adhesion molecule expression. J Invest Dermatol 2007; 128:326-31. [PMID: 17671516 DOI: 10.1038/sj.jid.5700996] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Esters of fumaric acid have a long tradition in the treatment of psoriasis. Dimethylfumarate (DMF) is perceived as the main active substance. However, the molecular mechanisms of DMF action are not completely understood. Here, we investigate the effects of DMF on lymphocyte adhesion molecule expression in vitro and interactions with endothelial cells in vivo. DMF dose-dependently reduced superantigen-induced expression of CD25, human leukocyte antigen-DR, and cutaneous lymphocyte antigen by 27, 22, and 48% on CD3-positive cells, respectively. No change was observed for CD54, VLA-4, and P-selectin glycoprotein ligand-1. An enhancement of CD69 expression was noted (22%). DMF led to a significant reduction in binding of human peripheral blood mononuclear cells (PBMCs) to E-selectin (72%), P-selectin (36%), and vascular cell adhesion molecule-1 (33%) in vitro. Intravital microscopy of PBMCs in ear vasculature of wild-type and knockout mice showed that rolling was mainly P-selectin-dependent and could be reduced by 61% through DMF incubation. We provide early evidence that DMF affects adhesion molecule expression on human leukocytes and their rolling behavior in vivo, indicating that DMF directly affects the initial step of leukocyte extravasation.
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Affiliation(s)
- Simone A Rubant
- Department of Dermatology, Clinic of the Johann Wolfgang Goethe-University, Frankfurt am Main, Germany.
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Rijcken E, Mennigen RB, Schaefer SD, Laukoetter MG, Anthoni C, Spiegel HU, Bruewer M, Senninger N, Krieglstein CF. PECAM-1 (CD 31) mediates transendothelial leukocyte migration in experimental colitis. Am J Physiol Gastrointest Liver Physiol 2007; 293:G446-52. [PMID: 17510197 DOI: 10.1152/ajpgi.00097.2007] [Citation(s) in RCA: 26] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Transendothelial migration of circulating leukocytes into the colonic wall is a key step in the development of the inflammatory infiltrate in inflammatory bowel disease (IBD). The platelet-endothelial cell adhesion molecule-1 PECAM-1 (CD31) is expressed in the tight junction area of endothelial cells, where it is supposed to support the transmigration process. The aim of this study was to determine the role of PECAM-1 in experimental IBD and to show whether blockade of PECAM-1 has therapeutic effects. Chronic colitis was induced in female BALB/c mice by cyclic oral administration of dextran sodium sulfate (DSS) 3% (wt/vol). Expression of PECAM-1 was visualized by immunohistochemistry. In the treatment group animals received 1 mg/kg anti-PECAM-1 (2H8) ip daily starting on day 26. On day 30 leukocyte adhesion and migration was measured during N(2)O-isoflurane anesthesia in the distal colon by intravital microscopy. Disease activity index (DAI), histology, and MPO levels were compared with healthy and diseased controls. PECAM-1 was expressed in colitic mice. Chronic DSS colitis was characterized by a marked increase in rolling, adherent, and transmigrated leukocytes compared with healthy controls. Immunoblockade of PECAM-1 reduced leukocyte transmigration significantly and also diminished leukocyte rolling and sticking in an indirect manner. It also resulted in a significantly diminished DAI and MPO levels, as well as an amelioration of the histological inflammation score. PECAM-1 plays an important role in transendothelial leukocyte migration in DSS colitis. PECAM-1 could be a novel target for antibody-based treatment in IBD.
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Affiliation(s)
- Emile Rijcken
- Dept. of General Surgery, Muenster University Hospital, Waldeyerstrasse 1, D-48149 Muenster, Germany.
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Rajesh M, Mukhopadhyay P, Bátkai S, Haskó G, Liaudet L, Huffman JW, Csiszar A, Ungvari Z, Mackie K, Chatterjee S, Pacher P. CB2-receptor stimulation attenuates TNF-alpha-induced human endothelial cell activation, transendothelial migration of monocytes, and monocyte-endothelial adhesion. Am J Physiol Heart Circ Physiol 2007; 293:H2210-8. [PMID: 17660390 PMCID: PMC2229632 DOI: 10.1152/ajpheart.00688.2007] [Citation(s) in RCA: 187] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Targeting cannabinoid-2 (CB(2)) receptors with selective agonists may represent a novel therapeutic avenue in various inflammatory diseases, but the mechanisms by which CB(2) activation exerts its anti-inflammatory effects and the cellular targets are elusive. Here, we investigated the effects of CB(2)-receptor activation on TNF-alpha-induced signal transduction in human coronary artery endothelial cells in vitro and on endotoxin-induced vascular inflammatory response in vivo. TNF-alpha induced NF-kappaB and RhoA activation and upregulation of adhesion molecules ICAM-1 and VCAM-1, increased expression of monocyte chemoattractant protein, enhanced transendothelial migration of monocytes, and augmented monocyte-endothelial adhesion. Remarkably, all of the above-mentioned effects of TNF-alpha were attenuated by CB(2) agonists. CB(2) agonists also decreased the TNF-alpha- and/or endotoxin-induced ICAM-1 and VCAM-1 expression in isolated aortas and the adhesion of monocytes to aortic vascular endothelium. CB(1) and CB(2) receptors were detectable in human coronary artery endothelial cells by Western blotting, RT-PCR, real-time PCR, and immunofluorescence staining. Because the above-mentioned TNF-alpha-induced phenotypic changes are critical in the initiation and progression of atherosclerosis and restenosis, our findings suggest that targeting CB(2) receptors on endothelial cells may offer a novel approach in the treatment of these pathologies.
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MESH Headings
- Animals
- Anti-Inflammatory Agents/pharmacology
- Anti-Inflammatory Agents/therapeutic use
- Aorta/drug effects
- Aorta/metabolism
- Cannabinoids/pharmacology
- Cannabinoids/therapeutic use
- Cells, Cultured
- Chemokine CCL2/metabolism
- Coronary Vessels/drug effects
- Coronary Vessels/metabolism
- Disease Models, Animal
- Dose-Response Relationship, Drug
- Endothelial Cells/drug effects
- Endothelial Cells/metabolism
- Humans
- Inflammation/chemically induced
- Inflammation/metabolism
- Inflammation/prevention & control
- Intercellular Adhesion Molecule-1/metabolism
- Leukocyte Rolling/drug effects
- Lipopolysaccharides
- Male
- Mice
- Mice, Inbred C57BL
- Monocytes/drug effects
- Monocytes/metabolism
- NF-kappa B/metabolism
- RNA, Messenger/metabolism
- Receptor, Cannabinoid, CB1/metabolism
- Receptor, Cannabinoid, CB2/agonists
- Receptor, Cannabinoid, CB2/genetics
- Receptor, Cannabinoid, CB2/metabolism
- Signal Transduction/drug effects
- Tumor Necrosis Factor-alpha/metabolism
- Vascular Cell Adhesion Molecule-1/metabolism
- rhoA GTP-Binding Protein/metabolism
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Affiliation(s)
- Mohanraj Rajesh
- Section on Oxidative Stress Tissue Injury, Laboratory of Physiological Studies, National Institute on Alcohol Abuse and Alcoholism, National Institutes of Health, Bethesda, Maryland 20892-9413, USA
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Han JY, Horie Y, Miura S, Akiba Y, Guo J, Li D, Fan JY, Liu YY, Hu BH, An LH, Chang X, Xu M, Guo DA, Sun K, Yang JY, Fang SP, Xian MJ, Kizaki M, Nagata H, Hibi T. Compound Danshen injection improves endotoxin-induced microcirculatory disturbance in rat mesentery. World J Gastroenterol 2007; 13:3581-91. [PMID: 17659708 PMCID: PMC4146797 DOI: 10.3748/wjg.v13.i26.3581] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
AIM: To investigate the effect of compound Danshen injection on lipopolysaccharide (LPS)-induced rat mesenteric microcirculatory dysfunctions and the underlying possible mechanism by an inverted intravital microscope and high-speed video camera system.
METHODS: LPS was continuously infused through the jugular artery of male Wistar rats at the dose of 2 mg/kg per hour. Changes in mesenteric microcirculation, such as diameters of arterioles and venules, velocity of RBCs in venules, leukocyte rolling, adhesion and emigration, free radicals released from post-capillary venules, FITC-albumin leakage and mast cell degranulation, were observed through an inverted intravital microscope assisted with CCD camera and SIT camera. Meanwhile, the expression of adhesion molecules CD11b/CD18 and the production of free radical in neutrophils, and the expression of intercellular adhesion molecule 1 (ICAM-1) in human umbilical vein endothelial cells (HUVECs) were quantified by flow cytometry (FACS) in vitro.
RESULTS: The continuous infusion with LPS resulted in a number of responses in microcirculation, including a significant increase in the positive region of venule stained with Monastral blue B, rolling and adhesion of leukocytes, production of oxygen radical in venular wall, albumin efflux and enhanced mast cell degranulation in vivo, all of which, except for the leukocyte rolling, were attenuated by the treatment with compound Danshen injection. Experiments performed in vitro further revealed that the expression of CD11b/CD18 and the production of oxygen free radical in neutrophils, and the expression of ICAM-1 in HUVECs were increased by exposure to LPS, and they were attenuated by compound Danshen injection.
CONCLUSION: These results suggest that compound Danshen injection is an efficient drug with multi-targeting potential for improving the microcirculatory disturbance.
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Affiliation(s)
- Jing-Yan Han
- Department of Integration of Chinese and Western Medicine, School of Basic Medical Sciences, Peking University, 38 Xueyuan Road, Beijing 100083, China.
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Ouedraogo R, Gong Y, Berzins B, Wu X, Mahadev K, Hough K, Chan L, Goldstein BJ, Scalia R. Adiponectin deficiency increases leukocyte-endothelium interactions via upregulation of endothelial cell adhesion molecules in vivo. J Clin Invest 2007; 117:1718-26. [PMID: 17549259 PMCID: PMC1878515 DOI: 10.1172/jci29623] [Citation(s) in RCA: 207] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2006] [Accepted: 04/02/2007] [Indexed: 12/27/2022] Open
Abstract
This study reports on what we believe are novel mechanism(s) of the vascular protective action of adiponectin. We used intravital microscopy to measure leukocyte-endothelium interactions in adiponectin-deficient (Ad(-/-)) mice and found that adiponectin deficiency was associated with a 2-fold increase in leukocyte rolling and a 5-fold increase in leukocyte adhesion in the microcirculation. Measurement of endothelial NO (eNO) revealed that adiponectin deficiency drastically reduced levels of eNO in the vascular wall. Immunohistochemistry demonstrated increased expression of E-selectin and VCAM-1 in the vascular endothelium of Ad(-/-) mice. Systemic administration of the recombinant globular adiponectin domain (gAd) to Ad(-/-) mice significantly attenuated leukocyte-endothelium interactions and adhesion molecule expression in addition to restoring physiologic levels of eNO. Importantly, prior administration of gAd also protected WT mice against TNF-alpha-induced leukocyte-endothelium interactions, indicating a pharmacologic action of gAd. Mechanistically, blockade of eNOS with N(omega)-nitro-L-arginine methyl ester ( L-NAME) abolished the inhibitory effect of gAd on leukocyte adhesion, demonstrating the obligatory role of eNOS signaling in the antiinflammatory action of gAd. We believe this is the first demonstration that gAd protects the vasculature in vivo via increased NO bioavailability with suppression of leukocyte-endothelium interactions. Overall, we provide evidence that loss of adiponectin induces a primary state of endothelial dysfunction with increased leukocyte-endothelium adhesiveness.
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Affiliation(s)
- Raogo Ouedraogo
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Yulan Gong
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Brett Berzins
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Xiandong Wu
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Kalyankar Mahadev
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Kelly Hough
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Lawrence Chan
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Barry J. Goldstein
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
| | - Rosario Scalia
- Division of Endocrinology, Diabetes, and Metabolic Diseases, Department of Medicine, and
Department of Molecular Physiology and Biophysics, Jefferson Medical College, Thomas Jefferson University, Philadelphia, Pennsylvania, USA.
Section of Diabetes, Endocrinology, and Metabolism, Department of Medicine, Baylor College of Medicine, Houston, Texas, USA
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Zhang H, Zhi L, Moochhala SM, Moore PK, Bhatia M. Endogenous hydrogen sulfide regulates leukocyte trafficking in cecal ligation and puncture-induced sepsis. J Leukoc Biol 2007; 82:894-905. [PMID: 17599903 DOI: 10.1189/jlb.0407237] [Citation(s) in RCA: 102] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Hydrogen sulfide (H(2)S) is recognized increasingly as a proinflammatory mediator in various inflammatory conditions. Here, we have investigated the role of H(2)S in regulating expression of some endothelial adhesion molecules and recruitment of leukocytes to inflamed sites in sepsis. Male Swiss mice were subjected to cecal ligation and puncture (CLP)-induced sepsis and treated with saline (i.p.), DL-propargylglycine (PAG; 50 mg/kg, i.p.), an inhibitor of H(2)S formation or NaHS (10 mg/kg, i.p.), an H(2)S donor. PAG was administered 1 h before or after the induction of sepsis, and NaHS was given at the same time of CLP. Using intravital microcopy, we found that in sepsis, prophylactic and therapeutic administration of PAG reduced leukocyte rolling and adherence significantly in mesenteric venules coupled with decreased mRNA and protein levels of adhesion molecules (ICAM-1, P-selectin, and E-selectin) in lung and liver. In contrast, injection of NaHS up-regulated leukocyte rolling and attachment significantly, as well as tissue levels of adhesion molecules in sepsis. Conversely, normal mice were given NaHS (10 mg/kg, i.p.) to induce lung inflammation, with or without NF-kappaB inhibitor BAY 11-7082 pretreatment. NaHS treatment enhanced the level of adhesion molecules and neutrophil infiltration in lung. These alterations were reversed by pretreatment with BAY 11-7082. Moreover, expression of CXCR2 in neutrophils obtained from H(2)S-treated mice was up-regulated significantly, leading to an obvious elevation in MIP-2-directed migration of neutrophils. Therefore, H(2)S acts as an important endogenous regulator of leukocyte activation and trafficking during an inflammatory response.
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Affiliation(s)
- Huili Zhang
- Department of Pharmacology, Centre for Life Sciences, National University of Singapore, 28 Medical Drive, Singapore 117456
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Yusof M, Kamada K, Gaskin FS, Korthuis RJ. Angiotensin II mediates postischemic leukocyte-endothelial interactions: role of calcitonin gene-related peptide. Am J Physiol Heart Circ Physiol 2007; 292:H3032-7. [PMID: 17307998 DOI: 10.1152/ajpheart.01210.2006] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Vascular inflammation and enhanced production of angiotensin II (ANG II) are involved in the pathogenesis of hypertension and diabetes, disease states that predispose the afflicted individuals to ischemic disorders. In light of these observations, we postulated that ANG II may play a role in promoting leukocyte rolling (LR) and adhesion (LA) in postcapillary venules after exposure of the small intestine to ischemia-reperfusion (I/R). Using an intravital microscopic approach in C57BL/6J mice, we showed that ANG II type I (AT1) or type II (AT2) receptor antagonism (with valsartan or PD-123319, respectively), inhibition of angiotensin-converting enzyme (ACE) with captopril, or calcitonin gene-related peptide (CGRP) receptor blockade (CGRP8-37) prevented postischemic LR but did not influence I/R-induced LA. However, both postischemic LR and LA were largely abolished by concomitant AT1 and AT2 receptor blockade or chymase inhibition (with Y-40079). Additionally, exogenously administered ANG II increased LR and LA, effects that were attenuated by pretreatment with a CGRP receptor antagonist or an NADPH oxidase inhibitor (apocynin). Our work suggests that ANG II, formed by the enzymatic activity of ACE and chymase, plays an important role in inducing postischemic LR and LA, effects that involve the engagement of both AT1 and AT2 receptors and may be mediated by CGRP and NADPH oxidase.
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Affiliation(s)
- Mozow Yusof
- Department of Medical Pharmacology and Physiology, Dalton Cardiovascular Research Center, University of Missouri-Columbia School of Medicine, One Hospital Dr., Columbia, MO 65212, USA
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Zarbock A, Lowell CA, Ley K. Spleen tyrosine kinase Syk is necessary for E-selectin-induced alpha(L)beta(2) integrin-mediated rolling on intercellular adhesion molecule-1. Immunity 2007; 26:773-83. [PMID: 17543554 PMCID: PMC2600878 DOI: 10.1016/j.immuni.2007.04.011] [Citation(s) in RCA: 232] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2007] [Revised: 03/19/2007] [Accepted: 04/17/2007] [Indexed: 01/07/2023]
Abstract
Engagement of neutrophils by E-selectin results in integrin activation. Here, we investigated primary mouse neutrophils in whole blood by using intravital microscopy and autoperfused flow chambers. Slow rolling on E-selectin coimmobilized with intercellular adhesion molecule-1 (ICAM-1) required P-selectin glycoprotein ligand (PSGL)-1, was dependent on alpha(L)beta(2) integrin (LFA-1), and required continuous E-selectin engagement. Slow rolling was abolished by pharmacological blockade of spleen tyrosine kinase (Syk) and was absent in Syk(-/-) bone-marrow chimeric mice. Treatment with tumor necrosis factor-alpha lowered rolling velocity further and induced CXC chemokine ligand-1 (CXCL1) and CXC chemokine receptor-2 (CXCR2)-dependent leukocyte arrest on E-selectin and ICAM-1. Arrest but not rolling was blocked by an allosteric inhibitor of LFA-1 activation. Neutrophil recruitment in a thioglycollate-induced peritonitis model was almost completely inhibited in Selplg(-/-) mice or Syk(-/-) bone-marrow chimeras treated with pertussis toxin. This identifies a second neutrophil-activation pathway that is as important as activation through G protein-coupled receptors (GPCRs).
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Affiliation(s)
- Alexander Zarbock
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
- Department of Anesthesiology and Intensive Care Medicine, University of Münster, Münster, Germany
| | | | - Klaus Ley
- Robert M. Berne Cardiovascular Research Center, University of Virginia, Charlottesville, Virginia, USA
- Department of Physiology and Biological Physics, University of Virginia, Charlottesville, Virginia, USA
- Biomedical Engineering, University of Virginia, Charlottesville, Virginia, USA
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Okudaira K, Tsuzuki Y, Hokari R, Miyazaki J, Mataki N, Komoto S, Okada Y, Kawaguchi A, Nagao S, Itoh K, Miura S. Effects of intratumoral injection of CCL2 on monocyte-endothelial cell interactions in mouse pancreatic cancer. Microcirculation 2007; 14:241-51. [PMID: 17454676 DOI: 10.1080/10739680601139393] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
OBJECTIVE Although monocyte infiltration is an important aspect of the host response to tumor growth, the mechanisms of recruitment and their impact on tumor growth are still unknown. The authors studied monocyte-endothelial interaction and the effect of chemokine CCL2 in orthotopic mouse pancreatic cancer. METHODS The rolling and adhesion of labeled monocytes in peritumoral and intratumoral areas were assessed by using an intravital microscope. Further, the effects of intratumoral injection or superfusion of CCL2 on in situ recruitment of monocytes and other immune cells and adhesion molecules were investigated. RESULTS More monocytes were recruited in the peritumoral area than in the intratumoral area with increased vascular interaction, and the effect was more apparent by intratumoral CCL2 injection than superfusion. In both CCL2-treated groups infiltration of CD11b(+), CD68(+), and CD4(+) cells were increased, but the magnitude of increase was larger in intratumoral injection. Quantitative RT-PCR for the tumor tissue revealed that ICAM-1 expression was increased by the injection of CCL2. CONCLUSION These results show intratumoral injection of CCL2 induces effective interaction between monocytes and endothelial cells in the peritumoral area of pancreatic cancer accompanied by the upregulation of ICAM-1 and may possibly become a tool for immunotherapy by promoting the infiltration of immune cells in cancers.
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Affiliation(s)
- Keisuke Okudaira
- Department of Internal Medicine, National Defense Medical College, Saitama, Japan
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Geerts AM, Cheung KJ, Van Vlierberghe H, De Vriese AS, Mortier S, Vanheule E, Lameire N, De Vos M, Colle I. Decreased leukocyte recruitment in the mesenteric microcirculation of rats with cirrhosis is partially restored by treatment with peginterferon: an in vivo study. J Hepatol 2007; 46:804-15. [PMID: 17275128 DOI: 10.1016/j.jhep.2006.11.014] [Citation(s) in RCA: 3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2006] [Revised: 11/06/2006] [Accepted: 11/15/2006] [Indexed: 01/07/2023]
Abstract
BACKGROUND/AIMS Patients with liver cirrhosis are predisposed to develop bacterial infections. An essential process in inflammatory responses is the recruitment of circulating leukocytes through the activation of adhesion molecules. Interferon-alpha2a is a cytokine reported to influence the expression of adhesion molecules. We investigated the effect of peginterferon-alpha2a (PegIFN-alpha(2a)) in vivo on the leukocyte recruitment in the mesenteric microcirculation of cirrhotic rats after lipopolysaccharide exposure. METHODS Leukocyte rolling, adhesion and extravasation were visualized by intravital microscopy in sham-operated and common bile duct ligated (CBDL) rats. PegIFN-alpha(2a) was administered to influence leukocyte recruitment. Endothelial P-selectin, E-selectin and ICAM-1 expression were studied by immunohistochemistry. RESULTS CBDL placebo rats showed significantly impaired rolling, adhesion and extravasation of leukocytes compared to Sham-operated placebo rats. Endothelial P-selectin, E-selectin and ICAM-1 expressions in CBDL placebo rats were significantly reduced compared to Sham-operated placebo rats. PegIFN-alpha(2a) 18 microg normalized number of rolling leukocytes in CBDL rats, without influencing on adhering and extravasated leukocytes. PegIFN-alpha(2a) upregulates the expression of P-selectin and E-selectin in CBDL rats, but ICAM-1 expression remained significantly lower than in Sham rats. CONCLUSIONS Leukocyte recruitment is significantly impaired in the mesenteric microcirculation of cirrhotic rats. This deficiency appears to result from a reduced endothelial P-selectin, E-selectin and ICAM-1 expression. Peginterferon-alpha(2a) treatment normalizes rolling of leukocytes in cirrhotic rats by upregulation of P-selectin and E-selectin expressions, but has no influence on adhesion and extravasation possibly due to the absence of effect on ICAM-1 expression.
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Affiliation(s)
- Anja M Geerts
- Department of Hepatology and Gastroenterology, Ghent University Hospital, Belgium.
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Iwama D, Miyamoto K, Miyahara S, Tamura H, Tsujikawa A, Yamashiro K, Kiryu J, Yoshimura N. Neuroprotective effect of cilostazol against retinal ischemic damage via inhibition of leukocyte-endothelial cell interactions. J Thromb Haemost 2007; 5:818-25. [PMID: 17408412 DOI: 10.1111/j.1538-7836.2007.02425.x] [Citation(s) in RCA: 16] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Cilostazol, a selective platelet phosphodiesterase inhibitor, has been shown to reduce neuronal injury after transient cerebral ischemia. Its neuroprotective effect is thought to result from an antiplatelet function. This study was designed to evaluate the inhibitory effects of cilostazol against retinal ischemic damage focusing on leukocyte-endothelial cell interactions. METHODS Retinal ischemia was induced for 60 min in male Sprague-Dawley rats (n = 144) by temporary ligation of the optic sheath. Cilostazol was administered just before ischemia induction. Leukocyte behavior in the retinal microcirculation was evaluated in vivo with scanning laser ophthalmoscopy and ex vivo with fluorescence microscopy. Retinal expression of P-selectin, intracellular adhesion molecule-1 (ICAM-1), and vascular endothelial growth factor were evaluated by real-time quantitative reverse transcriptase-polymerase chain reaction. Ischemia-induced retinal damage was evaluated histologically. RESULTS Treatment with cilostazol significantly suppressed leukocyte-endothelial cell interactions; the maximal numbers of rolling leukocytes were reduced by 77.6% (P < 0.01) 12 h after ischemia. Twenty-four hours after ischemia, adherent and accumulated leukocytes were also suppressed by treatment with cilostazol (36.1% and 20.4% respectively, P < 0.01). The expressions of P-selectin and ICAM-1 mRNA were suppressed significantly in cilostazol-treated retinas (P < 0.05). The retinal histological examination demonstrated a significant protective effect of cilostazol against ischemia-induced retinal damage (P < 0.01). CONCLUSIONS The present study demonstrates that cilostazol attenuates retinal injury after transient ischemia via inhibition of leukocyte-endothelial cell interactions. This inhibitory effect on postischemic leukocyte-endothelial cell interactions might partially contribute to its neuroprotective effects.
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Affiliation(s)
- D Iwama
- Department of Ophthalmology and Visual Sciences, Kyoto University Graduate School of Medicine, Shogoin-Kawahara-cho, Sakyo-ku, Kyoto, Japan
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Sun BW, Chen ZY, Chen X, Liu C. Attenuation of leukocytes sequestration by carbon monoxide-releasing molecules: liberated carbon monoxide in the liver of thermally injured mice. J Burn Care Res 2007; 28:173-81. [PMID: 17211222 DOI: 10.1097/bcr.0b013e31802ca491] [Citation(s) in RCA: 26] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We sought to determine whether the CO-releasing molecules, ie, liberated CO, attenuates the leukocytes sequestration in the liver of thermally injured mice. Sixty-five mice were assigned to five groups in three respective experiments. In each experiment, mice in sham group (n = 7) and sham + CORM-2 group (n = 7) were underwent sham thermal injury, whereas mice in burn group (n = 7) received 15% TBSA full-thickness thermal injury, mice in burn + CORM-2 group (n = 7) underwent the same thermal injury with the immediate administration of CORM-2 (8 mg/kg intravenously), and mice in burn + DMSO group (n = 7) underwent the same thermal injury with an immediate 160 microl-bolus injection of 0.5% dimethyl sulfoxide/saline. Polymorphonuclear leucocyte (PMN) accumulation (assessed by the myeloperoxidase assay) was assessed in mice liver. Activation of nuclear factor kappa B (NF-kappaB) and the expression levels of ICAM-1 and VCAM-1 in liver were assessed. In an in vitro experiment, sinusoidal endothelial cells (SECs) isolated from the liver of normal mice were stimulated by experimental mice serum (50% v/v) for 4 hours. Subsequently, the adhesion of PMNs to SECs was assessed. In addition, the number and states (rolling or stationary) of leukocytes in liver were observed by intravital microscopy. Treatment of thermally injured mice with CORM-2 attenuated PMN accumulation and prevented activation of NF-kappaB in the liver, which was accompanied by a decrease of the expression of ICAM-1 and VCAM-1. In parallel, PMNs adhesion to SECs stimulated by CORM-2-treated thermally injured mice serum was markedly decreased. Intravital microscopy showed that the stationary leukocytes in thermally injured mice liver were significantly reduced by treatment of CORM-2. CORM-released CO attenuates leukocytes sequestration in the liver of burn mice by interfering with NF-kappaB activation, protein expression of ICAM-1 and VCAM-1, and therefore suppressing endothelial cells proadhesive phenotype.
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Affiliation(s)
- Bing-Wei Sun
- Department of Burns and Plastic Surgery, Affiliated Hospital, Jiangsu University, Zhenjiang 212001, Jiangsu Province, People's Republic of China
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Sehnert B, Gierer P, Ibrahim S, Kühl A, Voll R, Nandakumar KS, Holmdahl R, Hallmann R, Vollmar B, Burkhardt H. Modulation of granulocyte-endothelium interactions by antileukoproteinase: inhibition of anti-type II collagen antibody-induced leukocyte attachment to the synovial endothelium. Arthritis Res Ther 2007; 8:R95. [PMID: 16776851 PMCID: PMC1779410 DOI: 10.1186/ar1973] [Citation(s) in RCA: 14] [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: 12/22/2005] [Revised: 04/17/2006] [Accepted: 05/16/2006] [Indexed: 01/30/2023] Open
Abstract
Antileukoproteinase (ALP) is a physiological inhibitor of granulocytic serine proteases that has been shown to have anti-inflammatory properties in addition to its antiproteolytic activity. On the basis of its potential to block anti-collagen type II (CII) antibody-induced arthritis (CAIA) and to suppress the conformational activation of β2-integrins in leukocytes, the present study was undertaken to investigate its interference with leukocyte adherence to cytokine-activated endothelium. The potential of recombinant ALP to block the interactions of leukocytes with the endothelial lining was concomitantly investigated in vitro and in vivo. Thus, intravital fluorescence microscopic imaging of leukocyte rolling and firm adhesion to postcapillary venules were performed in the knee joints of DBA1/J mice after intravenous injection of anti-CII mAbs. An IL-1β-activated endothelial layer formed by a murine glomerular cell line (glEND.2) was used to assay the interaction with human leukocytes in vitro. Electromobility shift and luciferase reporter gene assays permitted the analysis of cytokine-induced activation of the NF-κB pathway. Fluorescence-activated cell sorting was applied to determine endothelial E-selectin expression. Leukocyte rolling and firm adhesion to the synovial endothelium in an early response to the anti-CII antibody transfer were significantly decreased in ALP-pretreated mice. Concomitantly, ALP suppressed the IL-1β-induced NF-κB activation and the upregulation of E-selectin expression in glEND.2 cells in vitro. These findings support the notion that the newly uncovered properties of ALP to interfere with cytokine signalling and upregulation of adhesion molecules in endothelial cells are likely to contribute to the therapeutic potential of ALP in immune-complex-induced tissue injury.
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Affiliation(s)
- Bettina Sehnert
- Department of Internal Medicine III and Institute of Clinical Immunology at the Friedrich-Alexander-University of Erlangen-Nürnberg, Krankenhausstrasse 12, 91054 Erlangen, Germany
| | - Philip Gierer
- Department of Experimental Surgery, University of Rostock, Schillingallee 70, 18055 Rostock, Germany
- Department of Trauma and Reconstructive Surgery, University of Rostock, Schillingallee 70, 18055 Rostock, Germany
| | - Saleh Ibrahim
- Institute of Immunology, University of Rostock, Schillingallee 70, 18055 Rostock, Germany
| | - Anja Kühl
- Department of Experimental Surgery, University of Rostock, Schillingallee 70, 18055 Rostock, Germany
| | - Reinhard Voll
- IZKF Research Group N2, Nikolaus-Fiebiger Center, and Department of Internal Medicine III, Friedrich-Alexander-University of Erlangen-Nürnberg, Glückstrasse 6, 91054 Erlangen, Germany
| | | | - Rikard Holmdahl
- Section for Medical Inflammation Research, BMC I11, Lund University, Sweden
| | - Rupert Hallmann
- Institute for Physiological Chemistry and Pathobiochemistry, University of Münster, Waldeyerstrasse 15, 48149 Münster, Germany
| | - Brigitte Vollmar
- Department of Experimental Surgery, University of Rostock, Schillingallee 70, 18055 Rostock, Germany
| | - Harald Burkhardt
- Department of Internal Medicine III and Institute of Clinical Immunology at the Friedrich-Alexander-University of Erlangen-Nürnberg, Krankenhausstrasse 12, 91054 Erlangen, Germany
- Current address: Division of Rheumatology, Johann Wolfgang Goethe University Frankfurt, Theodor-Stern-Kai 7, 60590 Frankfurt am Main, Germany
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Abstract
The immune system relies on the motility on various cell types that roam the host through the blood, the peripheral tissues and the lymphoid organs, looking for pathogens. Along their maturation and/or activation, the cell migratory capacities change in order to allow them to leave organs where they have been produced such as thymus and bone marrow, to locate in strategic sites to sense surrounding microbes, to meet and interact with other cells, and finally to access peripheral tissues and organs to eradicate the pathogens. This cell traffic is a highly organized process that involves numerous protein families such as adhesion molecules, proteases and chemotactic factors. Among the latter, chemokines are in the front line. We will here summarize the recent findings stressing out their physiopathological relevance and will describe thereafter their possible therapeutic use.
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Affiliation(s)
- Béhazine Combadière
- Laboratoire d'immunologie cellulaire, Inserm U543, Université Pierre-et-Marie Curie, Faculté de Médecine Pitié-Salpêtrière, 91, boulevard de l'Hôpital, 75634 Paris Cedex 13, France
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Urquhart P, Rosignoli G, Cooper D, Motterlini R, Perretti M. Carbon monoxide-releasing molecules modulate leukocyte-endothelial interactions under flow. J Pharmacol Exp Ther 2007; 321:656-62. [PMID: 17289832 DOI: 10.1124/jpet.106.117218] [Citation(s) in RCA: 76] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Carbon monoxide (CO) generated by the enzyme heme oxygenase during the breakdown of heme is known to mediate a number of biological effects. Here, we investigated whether CO liberated from a water-soluble CO-releasing molecule (CO-RM) is capable of modulating leukocyte-endothelial interactions. Tricarbonylchoro(glycinato)ruthenium (II) (CORM-3), a fast CO releaser, proved to be anti-inflammatory in two distinct models of acute inflammation in vivo. In both cases, a significant reduction in neutrophil extravasation was observed. Subsequent in vitro static experiments showed that CORM-3 produced a direct effect on neutrophil (polymorphonuclear neutrophil; PMN) adhesion molecule expression; dose-dependently inhibiting platelet-activating factor stimulated CD11b up-regulation and L-selectin shedding, whereas no effect was observed on up-regulation of human umbilical vein endothelial cell (HUVEC) adhesion molecules intercellular adhesion molecule-1 or E-selectin nor on interleukin-8 chemokine production. In addition, when PMN interaction with HUVECs was studied, an inhibitory effect of CORM-3 on cell capture and rolling was observed. The effect of CORM-3 on PMN CD11b expression was mimicked by the incubation of PMN with the selective large potassium channel opener 1,3-dihydro-1-(2-hydroxy-5-(trifluoromethyl)-phenyl)-5-(trifluoromethyl)-2H-benzimidazol-2-one (NS-1619), which suggests that CORM-3 actions in this instance are mediated, at least in part, via opening of this channel. In conclusion, we have reported that CORM-3 possesses acute anti-inflammatory effects in vivo and that these are probably the result of targeting PMN activation and rolling upon the endothelium.
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Unal C, Sen C, Iscen D, Dalcik H. In vivo observation of leukocyte-endothelium interaction in ischemia reperfusion injury with the dorsal window chamber and the effects of pentoxifylline on reperfusion injury. J Surg Res 2007; 138:259-66. [PMID: 17275848 DOI: 10.1016/j.jss.2006.05.019] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [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: 02/01/2006] [Revised: 05/04/2006] [Accepted: 05/10/2006] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Ischemia reperfusion injury can cause failure in microsurgical operations. Interaction between leukocytes and endothelium is recognized as an integral step in ischemia reperfusion injury. Pentoxifylline is a methylxanthine derivative that has pharmacological properties that can be beneficial in ischemia reperfusion injury. The aim of this study was to investigate the in vivo effect of pentoxifylline on leukocyte-endothelium interaction in ischemia reperfusion injury. METHODS Intravital fluorescent microscopy was used to observe leukocyte-endothelium interaction in a "dorsal window chamber" model. Twenty-eight postcapillary veins were analyzed in group 1, and twenty-two in group 2. Group 1 received 25 mg/kg pentoxifylline 20 min before reperfusion. Group 2 received an equivalent volume of 0.9% saline at the same time. The period of ischemia was 4 h. RESULTS Quantification of leukocyte 'sticking' and 'rolling' was done before ischemia and at 30, 60, and 120 min after reperfusion. Offline video analysis was used for evaluating the results. Statistical evaluation showed that pentoxifylline significantly attenuated leukocyte 'sticking' and 'rolling' in postcapillary venules. It was also effective in preventing 'no-reflow' when compared with the control group. CONCLUSION These results indicate pentoxifylline diminishes leukocyte-endothelium interaction, and may have a therapeutic role in preventing ischemia reperfusion injury in microsurgical operations.
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Affiliation(s)
- Cigdem Unal
- Department of Plastic and Reconstructive Surgery, Kocaeli University Medical Faculty, Kocaeli, Turkey.
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Silva AS, Saldanha C, Martins e Silva J. Effects of velnacrine maleate in the leukocyte-endothelial cell interactions in rat cremaster microcirculatory network. Clin Hemorheol Microcirc 2007; 36:235-46. [PMID: 17361025] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
The expression of acetylcholinesterase in proinflammatory cells has supported the hypothesis that this protein plays a role in intercellular adhesion. Previous results of our group show that velnacrine, an acetylcholinesterase inhibitor, increases the number of adherent leukocytes in post-capillary venules of Wistar rats' mesentery muscle. This works intends to evaluate the local application of velnacrine and acetylcholine in the inflammatory response at the microcirculatory network by studying the leukocytes/endothelium interactions in post-capillary venules of Wistar rats' cremaster muscle. The number and the speed of the rolling leukocytes, the number of adherent leukocytes and hemodynamic parameters were determined and also the plasma levels of IL-1beta. The results have shown that in the presence of velnacrine there is a significant increase of the rolling leukocytes (1.28+/-0.39 vs 1.93+/-0.20), as well as an increase of the adherent ones (0.86+/-0.72 vs 1.02+/-0.83). When acetylcholine is adding with velnacrine the number of rolling and adherent leukocytes decreases without changing the IL-1beta plasma circulation induced by velnacrine. Our results suggest an anti-inflammatory role induced by ACh without full efficiency because the rolling leukocytes velocity was reduced without changes in the plasma level of IL-1beta.
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Affiliation(s)
- A S Silva
- Instituto de Biopatologia Química, Unidade de Biopatologia, Instituto de Medicina Molecular, Faculdade de Medicina de Lisboa, Lisboa, Portugal.
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Hsieh YH, Huang SS, Wei FC, Hung LM. Resveratrol Attenuates Ischemia - Reperfusion-Induced Leukocyte - Endothelial Cell Adhesive Interactions and Prolongs Allograft Survival Across the MHC Barrier. Circ J 2007; 71:423-8. [PMID: 17322646 DOI: 10.1253/circj.71.423] [Citation(s) in RCA: 26] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Ischemic - reperfusion (IR) injury is a multifactorial process that leads to tissue damage and rejection in composite tissue allotransplantation (CTA). Antioxidant or free radical scavenger may reduce IR injury, so the effects of resveratrol, a natural antioxidant, on amelioration of leukocyte - endothelial cell adhesive interaction and prevention of transplant rejection in CTA were investigated. METHODS AND RESULTS In a microcirculatory study, resveratrol significantly reduced the number of IR-induced leukocytes rolling, adhering, and transmigrating in the postcapillary venules of the cremaster muscle. In the CTA study using groin skin flap allotransplantation across the MHC barrier 8-11-week-old Brown Norway donors (RT1(n)) and 10-11-week-old Lewis recipients (RT1(l)) rats were randomized into 4 groups: isograft control, allograft control, and 2 groups that received different doses of resveratrol (0.1 or 0.5 mg/kg) for 7 days. Allograft control animals rejected their allograft between 5 and 7 days postoperatively, whereas resveratrol-treated recipients had a moderate survival prolongation compared with the allograft control group. Consistent with these observations, histology results also showed reduction of lymphocytic infiltration and necrosis in resveratrol-treated subjects. CONCLUSION Resveratrol treatment prolonged groin skin flap allotransplant survival in the recipient and ameliorated the leukocyte - endothelial cell adhesive interactions that may lead to attenuated and delayed rejection in CTA.
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Affiliation(s)
- Yu-Hsuan Hsieh
- Department of Life Science, College of Medicine, Chang Gung University, Tao-Yuan, Taiwan
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