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deKay JT, Emery IF, Rud J, Eldridge A, Lord C, Gagnon DJ, May TL, Herrera VLM, Ruiz-Opazo N, Riker RR, Sawyer DB, Ryzhov S, Seder DB. DEspR high neutrophils are associated with critical illness in COVID-19. Sci Rep 2021; 11:22463. [PMID: 34789851 PMCID: PMC8599677 DOI: 10.1038/s41598-021-01943-7] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 11/08/2021] [Indexed: 12/15/2022] Open
Abstract
SARS-CoV-2 infection results in a spectrum of outcomes from no symptoms to widely varying degrees of illness to death. A better understanding of the immune response to SARS-CoV-2 infection and subsequent, often excessive, inflammation may inform treatment decisions and reveal opportunities for therapy. We studied immune cell subpopulations and their associations with clinical parameters in a cohort of 26 patients with COVID-19. Following informed consent, we collected blood samples from hospitalized patients with COVID-19 within 72 h of admission. Flow cytometry was used to analyze white blood cell subpopulations. Plasma levels of cytokines and chemokines were measured using ELISA. Neutrophils undergoing neutrophil extracellular traps (NET) formation were evaluated in blood smears. We examined the immunophenotype of patients with COVID-19 in comparison to that of SARS-CoV-2 negative controls. A novel subset of pro-inflammatory neutrophils expressing a high level of dual endothelin-1 and VEGF signal peptide-activated receptor (DEspR) at the cell surface was found to be associated with elevated circulating CCL23, increased NETosis, and critical-severity COVID-19 illness. The potential to target this subpopulation of neutrophils to reduce secondary tissue damage caused by SARS-CoV-2 infection warrants further investigation.
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Affiliation(s)
- Joanne T deKay
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
| | - Ivette F Emery
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
| | - Jonathan Rud
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA
| | - Ashley Eldridge
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA
| | - Christine Lord
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA
| | - David J Gagnon
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA
- Tufts University School of Medicine, Boston, MA, USA
| | - Teresa L May
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA
| | - Victoria L M Herrera
- Whitaker Cardiovascular Institute and Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Nelson Ruiz-Opazo
- Whitaker Cardiovascular Institute and Department of Medicine, Boston University School of Medicine, Boston, MA, USA
| | - Richard R Riker
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA
| | - Douglas B Sawyer
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA
| | - Sergey Ryzhov
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA.
| | - David B Seder
- Maine Medical Center Research Institute, 81 Research Drive, Scarborough, ME, 04074, USA.
- Department of Critical Care Services, Maine Medical Center, 22 Bramhall St, Portland, ME, 04105, USA.
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Kartamihardja AAP, Amalia SN, Sekiguchi A, Bhattarai A, Taketomi-Takahashi A, Motegi SI, Koyama H, Tsushima Y. Neutrophil elastase in the development of nephrogenic systemic fibrosis (NSF)-like skin lesion in renal failure mouse model. PLoS One 2021; 16:e0259211. [PMID: 34705860 PMCID: PMC8550606 DOI: 10.1371/journal.pone.0259211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 10/14/2021] [Indexed: 11/18/2022] Open
Abstract
Although neutrophil elastase (NE) may play a role in lung fibrosis and liver fibrosis, NE involvement in the development of nephrogenic systemic fibrosis has been unclear. We investigated the involvement of NE in the development of nephrogenic systemic fibrosis-like skin lesions post-injections of linear gadolinium-based contrast agents in renal failure mouse models. Renal failure mouse models were randomly divided into three groups: control group (saline), gadodiamide group, and gadopentetate group. Each solution was intravenously administered three times per week for three weeks. The mice were observed daily for skin lesions. Quantification of skin lesions, infiltrating inflammatory cells, and profibrotic cytokines in the affected skin was performed by immunostaining and reverse-transcription polymerase chain reaction (RT-PCR). Blood samples were collected from the facial vein to quantify NE enzymatic activity. The 158Gd concentrations in each sample were quantified using inductively coupled plasma mass spectrometry (ICP-MS). In the gadodiamide group, the mRNA expression of fibrotic markers was increased in the skin lesions compared to the control group. In the gadopentetate group, only collagen 1α and TGF-β mRNA expression were higher than in the control group. The expression of CD3+, CD68+, NE cells and the NE activity in the blood serum were significantly higher in the gadodiamide and gadopentetate groups compared to the control group. Gadolinium concentration in the skin of the gadodiamide group was significantly higher than the gadopentetate group, while almost no traces of gadolinium were found in the control group. Although gadopentetate and gadodiamide affected the fibrotic markers in the skin differently, NE may be involved in the development of fibrosis linked to the GBCAs injections in renal failure mouse models.
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Affiliation(s)
- A. Adhipatria P. Kartamihardja
- Department of Diagnostic Radiology and Nuclear Medicine Department, Gunma University Graduate School of Medicine, Maebashi, Japan
- Department of Nuclear Medicine and Molecular Imaging, Universitas Padjajaran, Sumedang, Indonesia
| | - Syahla Nisaa Amalia
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Akiko Sekiguchi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Anu Bhattarai
- National Academy of Medical Sciences (NAMS), Bir Hospital, Kathmandu, Nepal
| | - Ayako Taketomi-Takahashi
- Department of Diagnostic Radiology and Nuclear Medicine Department, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Sei-ichiro Motegi
- Department of Dermatology, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Hiroshi Koyama
- Department of Public Health, Gunma University Graduate School of Medicine, Maebashi, Japan
| | - Yoshito Tsushima
- Department of Diagnostic Radiology and Nuclear Medicine Department, Gunma University Graduate School of Medicine, Maebashi, Japan
- Division of Integrated Oncology Research, Gunma Initiative for Advanced Research, Gunma University Graduate School of Medicine, Maebashi, Japan
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Chen Y, Li JX, Song Y, Xu JJ, Tang XF, Jiang L, Jiang P, Liu R, Wang HH, Zhao XY, Chen J, Gao Z, Qiao SB, Gao RL, Yang YJ, Xu B, Yuan JQ. Plasma big endothelin-1 and stent thrombosis: An observational study in patients undergoing percutaneous coronary intervention in China. Thromb Res 2017; 159:5-12. [DOI: 10.1016/j.thromres.2017.09.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/01/2017] [Accepted: 09/11/2017] [Indexed: 11/26/2022]
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4
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Dimitrijevic I, Edvinsson L. Increased endothelin 1 type B receptors in nasal lesions of patients with granulomatosis with polyangiitis. Am J Rhinol Allergy 2014; 27:444-50. [PMID: 24274217 DOI: 10.2500/ajra.2013.27.3954] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Endothelin 1 (ET-1) is a locally produced vasoactive peptide with proinflammatory capabilities. Systemic levels of ET-1 seem elevated in granulomatosis with polyangiitis (GPA). The aim of this study was to examine the involvement of the endothelin system in patients with GPA using nasal mucosal biopsies. METHODS Formalin-fixed and paraffin-embedded nasal mucous membranes from eight patients with GPA and eight controls were analyzed for ET-1 type A receptor (ETAR) and type B receptor (ETBR) expression using immunohistochemistry. RESULT ETAR immunostaining was localized only to a few inflammatory cells and to multinucleate giant cells (MGCs) in the nasal mucosa in GPA subjects. Intense ETBR immunostaining was localized to lymphocytes and MGC in the nasal granulomatous lesions in GPA. CD3(+), CD4(+), CD8(+), and CD68(+) lymphocytes expressed ETBRs in GPA subjects. CONCLUSION This observation shows that ETBR(+) lymphocyte expression predominates in nasal granulomatous lesions in GPA compared with ETAR. ETBR immunostaining is located to T cells, CD68(+) cells, and MGCs. ETBR may play an active role in the progression of granulomatous lesions in GPA.
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Affiliation(s)
- Ivan Dimitrijevic
- Department of Medicine, Institute of Clinical Sciences Lund University, Lund, Sweden
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5
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Paulino EC, de Souza LJ, Molan NAT, Machado MCC, Jancar S. Neutrophils from acute pancreatitis patients cause more severe in vitro endothelial damage compared with neutrophils from healthy donors and are differently regulated by endothelins. Pancreas 2007; 35:37-41. [PMID: 17575543 DOI: 10.1097/mpa.0b013e31805c177b] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
OBJECTIVE There is evidence that endothelin (ET) 1 affect neutrophil functions and that patients with severe acute pancreatitis have increased plasma levels of ETs. Under appropriate conditions, neutrophils are able to injure the endothelium. In the present study, we compared healthy donors with acute pancreatitis patients for neutrophil degranulation and its ability to injure the endothelium and the contribution of ET-1 to this injury. METHODS Injury was evaluated by measuring the detachment of endothelial cells (ECV-304) growing in monolayer in coculture with human neutrophils for 4 hours. Neutrophil degranulation was assessed by myeloperoxidase (MPO) activity in coculture supernatants. In some experiments, neutrophils were pretreated with the antagonist of ET(A) receptor (BQ-123, 10(-6) M), which has high affinity for ET-1. RESULTS Neutrophils from both healthy donors and acute pancreatitis patients caused detachment of endothelial cells, and levels of MPO activity were increased in coculture supernatants. Neutrophils from acute pancreatitis patients caused significantly higher levels of detachment and MPO in the supernatants. Pretreatment of neutrophils with BQ-123 inhibited the detachment caused by neutrophils from healthy donors but not by neutrophils from acute pancreatitis patients. CONCLUSIONS These results show that neutrophils taken from healthy donors damage the endothelium by a mechanism dependent on ETs acting via ET(A) receptor, whereas neutrophils from acute pancreatitis patients cause more severe damage that is not dependent on ETs in the in vitro system used.
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Affiliation(s)
- Ellena C Paulino
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, Brazil
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6
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Toffoli MC, Gabra BH, Teixeira CFP, Sirois P, Jancar S. Endothelins Mediate Neutrophil Activation, ProMMP-9 Release and Endothelial Cell Detachment. Inflammation 2007; 30:28-37. [PMID: 17221318 DOI: 10.1007/s10753-006-9018-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2006] [Accepted: 10/10/2006] [Indexed: 11/30/2022]
Abstract
Neutrophils isolated from human peripheral blood added to a monolayer of human endothelial cells (ECV-304 cell line) stimulated with LPS (100 ng ml(-1)) resulted in: (a) neutrophil activation, measured by spreading and release of leukotriene B(4) (LTB(4)); (b) neutrophil degranulation, measured by release of matrix pro-metalloproteinase-9 (proMMP-9) and (c) loss of the monolayer integrity due to detachment of the endothelial cells. Stimulation of endothelial cells with tumor necrosis factor-alpha (TNF-alpha 10 ng ml(-1)) or interleukin-1 (IL-1; 10 ng ml(-1)) induced a similar dose-dependent increase in the neutrophil activation and endothelial cell detachment. Pre-treatment of LPS-activated ECV-304 cells with [Phe22]BigET-1(19-37) (10(-9) M; an inhibitor of endothelin converting enzyme (ECE)) or addition of BQ-123 (10(-6) M; a selective endothelin A (ET(A)) receptor antagonist) to the co-cultures, significantly reduced neutrophil spreading (50-70% inhibition) as well as the levels of LTB(4) (70-100% inhibition) and proMMP-9 (40-50% inhibition) in the co-culture supernatants. In addition, the detachment of endothelial cells was also reduced (60-75% inhibition). Moreover, the exogenous addition of ET-1 (10(-9) M) to neutrophil suspensions induced neutrophil spreading and release of LTB(4) and proMMP-9. Taken together, these findings indicate that neutrophils added to stimulated endothelial cells in the co-culture system employed in this study, get activated by products of these cells and degranulate. In parallel, the detachment of endothelial cell monolayer from the culture plates, possibly by the action of neutrophil granule-derived gelatinases, is observed. Endothelins (ETs) produced by the endothelial cells are suggested to play an essential role in these phenomena.
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Affiliation(s)
- Monica C Toffoli
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, SP, Brazil
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8
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Paulino EC, Steil AA, Jancar S. Effect of endothelins on human neutrophil activation by immune complexes. Int Immunopharmacol 2006; 6:1119-25. [PMID: 16714215 DOI: 10.1016/j.intimp.2006.01.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2005] [Revised: 10/27/2005] [Accepted: 01/30/2006] [Indexed: 01/23/2023]
Abstract
Neutrophils are important effector cells of tissue injury in several pathological conditions, among them, immune complexes (IC)-induced inflammation and tissue injury. There is evidence that endothelins modulate IC-induced tissue injury in experimental models in vivo. In the present study we investigated the effect of endothelins on neutrophil activation by IC in vitro. To this purpose, pre-formed insoluble immune complexes were used to stimulate human neutrophils and production of leukotriene B(4) (LTB(4)) and hydrogen peroxyde (H(2)O(2)) were measured as indicative of phospholipase A(2) and oxidative burst activation and myeloperoxidase (MPO) release as indicative of cell degranulation. The effect of endothelins (ETs) in these events induced by IC was then examined. We found that IC stimulated all three events in human neutrophils. Addition of ET-1 but not ET-2 or ET-3 to the IC-stimulated neutrophils potentiated LTB(4) but not H(2)O(2) production. The endothelins added to resting neutrophils did not induce LTB(4) production but they were effective to stimulate H(2)O(2) production. The increased MPO activity induced by IC was not affected by endothelins nor did they stimulate the release of this enzyme in resting cells. These results show that endothelins are able to activate some neutrophil functions and to upregulate the IC-induced production of the pro-inflammatory molecule LTB(4). These data indicate that products of endothelial cells, such as endothelins, can be involved in the potentiation of neutrophil-dependent tissue injury.
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Affiliation(s)
- E C Paulino
- Department of Immunology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil
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9
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Yang LL, Arab S, Liu P, Stewart DJ, Husain M. The role of endothelin-1 in myocarditis and inflammatory cardiomyopathy: old lessons and new insights. Can J Physiol Pharmacol 2005; 83:47-62. [PMID: 15759050 DOI: 10.1139/y05-002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Endothelin-1 has emerged as an important participant in the pathophysiology of a variety of cardiovascular diseases, where it may act on endocrine, paracrine and autocrine bases. Here we review its regulated biosynthesis, receptor-mediated signaling, and functional consequences in the heart, with particular emphasis on cardiac development and disease. Exploring published data employing molecular genetic mouse models of endothelin dysregulation, we highlight its heretofore underappreciated role as a pro-inflammatory cytokine. We also present novel micro-array data from one such mouse model, which implicate the specific downstream pathways that may mediate endothelin-1's effects.Key words: endothelin-1, cardiac development, inflammation, transgenic mice, gene expression profiling.
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Affiliation(s)
- Li L Yang
- Heart and Stroke Richard Lewar Centre of Excellence, University of Toronto, Toronto, ON, Canada
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10
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Pearse DD, Chatzipanteli K, Marcillo AE, Bunge MB, Dietrich WD. Comparison of iNOS Inhibition by Antisense and Pharmacological Inhibitors after Spinal Cord Injury. J Neuropathol Exp Neurol 2003; 62:1096-107. [PMID: 14656068 DOI: 10.1093/jnen/62.11.1096] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Inducible nitric oxide synthase (iNOS) is a key mediator of inflammation during pathological conditions. We examined, through the use of selective iNOS inhibitors, the role of iNOS in specific pathophysiological processes after spinal cord injury (SCI), including astrogliosis, blood-spinal cord barrier (BSCB) permeability, polymorphonuclear leukocyte infiltration, and neuronal cell death. Administration of iNOS antisense oligonucleotides (ASOs) (intraspinally at 3 h) or the pharmacological inhibitors, N-[3(Aminomethyl) benzyl] acetamidine (1400 W) (i.v./i.p. 3 and 9 h) or aminoguanidine (i.p. at 3 and 9 h) after moderate contusive injury decreased the number of iNOS immunoreactive cells at the injury site by 65.6% (iNOS ASOs), 62.1% (1400 W), or 59% (aminoguanidine) 24 h postinjury. iNOS activity was reduced 81.8% (iNOS ASOs), 56.7% (1400 W), or 67.9% (aminoguanidine) at this time. All iNOS inhibitors reduced the degree of BSCB disruption (plasma leakage of rat immunoglobulins), with iNOS ASO inhibition being more effective (reduced by 58%). Neutrophil accumulation within the injury site was significantly reduced by iNOS ASOs and 1400 W by 78.8% and 20.9%, respectively. Increased astrogliosis was diminished with iNOS ASOs but enhanced following aminoguanidine. Detection of necrotic and apoptotic neuronal cell death by propidium iodide and an FITC-conjugated Annexin V antibody showed that iNOS inhibition could significantly retard neuronal cell death rostral and caudal to the injury site. These novel findings indicate that acute inhibition of iNOS is beneficial in reducing several pathophysiological processes after SCI. Furthermore, we demonstrate that the antisense inhibition of iNOS is more efficacious than currently available pharmacological agents.
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Affiliation(s)
- D D Pearse
- The Miami Project to Cure Paralysis and the Department of Neurological Surgery, University of Miami School of Medicine, Miami, Florida 33136, USA
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11
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Mayes MD. Endothelin and endothelin receptor antagonists in systemic rheumatic disease. ARTHRITIS AND RHEUMATISM 2003; 48:1190-9. [PMID: 12746891 DOI: 10.1002/art.10895] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Maureen D Mayes
- University of Texas Health Science Center at Houston, TX, USA.
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12
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Lehmberg J, Putz C, Fürst M, Beck J, Baethmann A, Uhl E. Impact of the endothelin-A receptor antagonist BQ 610 on microcirculation in global cerebral ischemia and reperfusion. Brain Res 2003; 961:277-86. [PMID: 12531495 DOI: 10.1016/s0006-8993(02)03974-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The role of endogenous endothelin-1 in mediating microcirculatory disturbances after global cerebral ischemia was investigated in Mongolian gerbils. The pial microcirculation was studied by intravital fluorescent microscopy before, during, and up to 3 h after occlusion of both carotid arteries for 15 min. Pretreatment was achieved with the peptidergic selective endothelin-A (ET-A) receptor antagonist BQ 610. The neurological outcome was assessed daily for up to 4 days. The antagonist attenuated postischemic leukocyte-endothelium interactions in postcapillary venules, in particular the number of rolling leukocytes was found to be reduced (13.0+/-9.4 x 100 microm(-1) min(-1) in the control vs. 2.0+/-2.5 in the experimental group, P<0.05). The local microvascular perfusion, measured by the arterio-venous transit time, was improved during reperfusion by BQ 610 (1.3+/-0.5 s in the control vs. 0.7+/-0.2 s in the experimental group, P<0.05). The neurological deficit was significantly reduced in animals treated with the ET-A antagonist (P<0.05). The inhibition of the postischemic inflammatory reaction and the reversal of the delayed hypoperfusion may account for the improved neurological outcome. These observations suggest that application of endothelin-A antagonists may be a useful approach to interfere with derangements in cerebral ischemia/reperfusion.
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Affiliation(s)
- Jens Lehmberg
- Department of Neurosurgery, Albert-Ludwigs-University, Freiburg i.B., Germany.
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13
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József L, Khreiss T, Fournier A, Chan JSD, Filep JG. Extracellular signal-regulated kinase plays an essential role in endothelin-1-induced homotypic adhesion of human neutrophil granulocytes. Br J Pharmacol 2002; 135:1167-74. [PMID: 11877323 PMCID: PMC1573225 DOI: 10.1038/sj.bjp.0704561] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
1. Endothelin-1 (ET-1) stimulates integrin-dependent adhesion of neutrophil granulocytes to endothelial cells, one of the early key events in acute inflammation. However, the signalling pathway(s) of ET-1-stimulated neutrophil adhesive responses has not been elucidated. Previous studies indicated that extracellular signal-regulated kinase (ERK) activation could mediate rapid responses of neutrophil granulocytes to various stimuli. In this study, we investigated the role of ERK signalling in human neutrophil granulocytes challenged with ET-1. 2. ET-1 rapidly down-regulated the expression of L-selectin and up-regulated the expression of CD11b/CD18 on the neutrophil surface. Concomitantly, ET-1 induced homotypic adhesion (aggregation) of neutrophils, that was blocked by a monoclonal antibody to CD18. 3. ET-1, through ET(A) receptors, evoked activation of Ras and subsequent phosphorylation of Raf-1, mitogen-activated protein kinase kinase (MAPK/ERK kinase) and ERK 1/2. ERK activation by ET-1 was rapid, concordant with the kinetics of ET-1-stimulated neutrophil aggregation. 4. Neutrophil responses to ET-1 were markedly attenuated by the MAPK/ERK kinase inhibitor PD98059, whereas inhibitors of p38 MAPK, tyrosine kinases and phosphatidylinositol 3-kinase had no detectable effects. We have observed a tight correlation between neutrophil ERK activation and homotypic adhesion. 5. These data indicate an essential role for ERK in mediating ET-1-stimulated adhesive responses of human neutrophil granulocytes.
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Affiliation(s)
- Levente József
- Research Center, Maisonneuve-Rosemont Hospital and Department of Medicine, University of Montréal, Montréal, Québec, Canada H1T 2M4
| | - Tarek Khreiss
- Research Center, Maisonneuve-Rosemont Hospital and Department of Medicine, University of Montréal, Montréal, Québec, Canada H1T 2M4
| | - Alain Fournier
- INRS-Institut Armand-Frappier, Pointe-Claire, Québec, Canada H9R 1G6
| | - John S D Chan
- CHUM-Hôtel-Dieu, Centre de Recherche, Pavillon Masson, University of Montréal, Montréal, Québec, Canada H2W 1T8
| | - János G Filep
- Research Center, Maisonneuve-Rosemont Hospital and Department of Medicine, University of Montréal, Montréal, Québec, Canada H1T 2M4
- Author for correspondence:
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Fagan KA, McMurtry IF, Rodman DM. Role of endothelin-1 in lung disease. Respir Res 2002; 2:90-101. [PMID: 11686871 PMCID: PMC59574 DOI: 10.1186/rr44] [Citation(s) in RCA: 174] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2000] [Accepted: 01/08/2001] [Indexed: 01/12/2023] Open
Abstract
Endothelin-1 (ET-1) is a 21 amino acid peptide with diverse biological activity that has been implicated in numerous diseases. ET-1 is a potent mitogen regulator of smooth muscle tone, and inflammatory mediator that may play a key role in diseases of the airways, pulmonary circulation, and inflammatory lung diseases, both acute and chronic. This review will focus on the biology of ET-1 and its role in lung disease.
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Affiliation(s)
- K A Fagan
- Cardiovascular Pulmonary Research Laboratory, Division of Pulmonary Sciences and Critical Care Medicine, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA.
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15
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Cox RA, Soejima K, Burke AS, Traber LD, Herndon DN, Schmalstieg FC, Traber DL, Hawkins HK. Enhanced pulmonary expression of endothelin-1 in an ovine model of smoke inhalation injury. THE JOURNAL OF BURN CARE & REHABILITATION 2001; 22:375-83. [PMID: 11761387 DOI: 10.1097/00004630-200111000-00005] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Recent studies suggest a role of endothelin-1 (ET-1) in mediating airway inflammation and lung injury. The aim of this study was to assess the immunohistochemical expression of ET-1 in the lung following smoke inhalation injury. ET-1 immunoreactivity was assessed in normal sheep (N = 4) and in sheep at 1 (N = 2), 6 (N = 3), 12 (N = 3), and 24 (N = 3) hours after inhalation injury. In normal animals, ET-1 expression was limited to the basal cell layer of the tracheal epithelium, main bronchi, and associated mucous glands. One hour after injury, ET-1 immunoreactivity was enhanced in upper airway epithelium and mucus glands with new expression in bronchioles. Airway smooth muscle, vascular tissue, and alveolar duct smooth muscle cells expressed moderate levels of ET-1 at 12 and 24 hours. ET-1 immunoreactivity was absent in areas of parenchymal edema and inflammation. The pattern of ET-1 expression following inhalation injury suggests that this peptide may contribute to the airway inflammation, mucus secretion, pulmonary hypertension, increased airway resistance, and decreased lung compliance, which are evident in our ovine model of inhalation injury.
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Affiliation(s)
- R A Cox
- Shriners Burns Hospital, Galveston, Texas, USA
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16
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Fernandez-Patron C, Zouki C, Whittal R, Chan JS, Davidge ST, Filep JG. Matrix metalloproteinases regulate neutrophil-endothelial cell adhesion through generation of endothelin-1[1-32]. FASEB J 2001; 15:2230-40. [PMID: 11641250 DOI: 10.1096/fj.01-0178com] [Citation(s) in RCA: 98] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
We recently reported that matrix metalloproteinase 2 (MMP-2, gelatinase A) cleaves big endothelin 1 (ET-1), yielding the vasoactive peptide ET-1[1-32]. We tested whether ET-1[1-32] could affect the adhesion of human neutrophils to coronary artery endothelial cells (HCAEC). ET-1[1-32] rapidly down-regulated the expression of L-selectin and up-regulated expression of CD11b/CD18 on the neutrophil surface, with EC50 values of 1-3 nM. These actions of ET-1[1-32] were mediated via ETA receptors and did not require conversion of ET-1[1-32] into ET-1 by neutrophil proteases, as revealed by liquid chromatography and mass spectroscopy. Moreover, ET-1[1-32] evoked release of neutrophil gelatinase B, which cleaved big ET-1 to yield ET-1[1-32], thus revealing a positive feedback loop for ET-1[1-32] generation. Up-regulation of CD11b/CD18 expression and gelatinase release was tightly associated with activation of extracellular signal-regulated kinase (Erk). Stimulation of Erk activity was due to activation of Ras, Raf-1, and MEK (MAPK kinase). ET-1[1-32] also produced slight increases in the expression of ICAM-1 and E-selectin on HCAEC, and markedly enhanced beta2 integrin-dependent adhesion of neutrophils to activated HCAEC. These results are the first indication that gelatinolytic MMPs via cleavage of big ET-1 to yield ET-1[1-32] activate neutrophils and promote leukocyte-endothelial cell adhesion and, consequently, neutrophil trafficking into inflamed tissues.
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Affiliation(s)
- C Fernandez-Patron
- Research Center, Maisonneuve-Rosemont Hospital and Department of Medicine, University of Montréal, Montréal, Québec H1T 2M4 Canada
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Gourine AV, Gonon AT, Pernow J. Involvement of nitric oxide in cardioprotective effect of endothelin receptor antagonist during ischemia-reperfusion. Am J Physiol Heart Circ Physiol 2001; 280:H1105-12. [PMID: 11179053 DOI: 10.1152/ajpheart.2001.280.3.h1105] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The interaction between the cardioprotective effect of endothelin (ET) receptor blockade and nitric oxide (NO) during ischemia-reperfusion injury was investigated. Anesthetized pigs were subjected to 45 (protocol 1) or 30 min (protocol 2) coronary artery ligation and 4 h reperfusion. In protocol 1, five groups were given vehicle, the ET(A) receptor antagonist LU-135252 (LU), the NO synthase (NOS) inhibitor N(G)-nitro-L-arginine (L-NNA), L-NNA in combination with LU, or L-NNA in combination with the NO precursor L-arginine (L-Arg) and LU intravenously before ischemia. In protocol 2, two groups were given vehicle or L-NNA. In protocol 1, the infarct size (IS) was 79 +/- 5% of the area at risk in the vehicle group and 93 +/- 2% in the L-NNA group. LU reduced the IS to 43 +/- 7% (P < 0.001). The cardioprotective effect of LU was abolished in the presence of L-NNA (IS 76 +/- 6%), whereas addition of L-Arg restored its cardioprotective effect (IS 56 +/- 2%; P < 0.05 vs. vehicle and L-NNA + LU groups). In protocol 2, the IS was 49 +/- 6% in the vehicle group and 32 +/- 4% in the L-NNA group (P = not significant). Myocardial ET-like immunoreactivity (ET-LI) increased in the vehicle group of protocol 1. ET-LI in the ischemic-reperfused myocardium was lower in the groups given LU (P < 0.01) and L-NNA + L-Arg + LU (P < 0.05) but not in the group given L-NNA + LU compared with the vehicle group. These results suggest that the cardioprotective effect of the ET(A) receptor antagonist is mediated via a mechanism related to NO.
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Affiliation(s)
- A V Gourine
- Department of Cardiology, Karolinska Hospital, Stockholm, S-171 76 Sweden.
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Gonon AT, Gourine AV, Pernow J. Cardioprotection from ischemia and reperfusion injury by an endothelin A-receptor antagonist in relation to nitric oxide production. J Cardiovasc Pharmacol 2000; 36:405-12. [PMID: 10975600 DOI: 10.1097/00005344-200009000-00018] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
It has previously been shown that endothelin (ET)-receptor antagonists protect the myocardium from ischemia and reperfusion (I/R) injury. The mechanism behind this effect is unclear. The aim of this study was to elucidate the possible interaction between ET(A)-receptor antagonism and nitric oxide (NO) during I/R. Anesthetized pigs were subjected to 45-min ligation of the left anterior descending coronary artery (LAD) followed by 4 h of reperfusion. Vehicle (n = 7), the ET(A)-receptor antagonist LU 135252 (LU; 0.1 mg/kg, n = 7), the combination of LU and the NO precursor L-arginine (15 mg/kg, n = 7; LU + L-arg), the NO synthase inhibitor N(G)-monomethyl-L-arginine (L-NMMA; 0.2 mg/kg, n = 6), or the combination of LU and L-NMMA (LU + L-NMMA; n = 6) were injected into the LAD during the last 10 min of ischemia and the first 5 min of reperfusion. There were no significant differences in coronary flow, pulmonary capillary wedge pressure, mean arterial pressure, or heart rate between the groups before ischemia or at the end of reperfusion. The area at risk was similar in all five groups. The infarct size of the vehicle group was 79 +/- 6% of the area at risk. LU and LU + L-arginine (L-arg) reduced the infarct size to 39 +/- 6% and 35 +/- 8%, respectively (p < 0.001 vs. vehicle). L-NMMA completely prevented the infarct-limiting effect of LU. Thus the infarct size in the LU + L-NMMA group was 83 +/- 4% (p < 0.001 vs. LU alone); L-NMMA did not affect infarct size per se (79 +/- 4%). ET immunoreactivity increased threefold in the I/R myocardium of the vehicle group. The increase in ET immunoreactivity was significantly attenuated in the LU and LU + L-arg groups (p < 0.001), but not in the groups given L-NMMA or LU + L-NMMA. In conclusion, ET(A)-receptor blockade results in cardioprotection and attenuation of the increase in myocardial ET levels after I/R. Both effects were inhibited by NO synthase blockade, suggesting that they are dependent on maintained production of NO.
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Affiliation(s)
- A T Gonon
- Department of Cardiology, Karolinska Hospital, Stockholm, Sweden.
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Heller A, Schmeck J, Heller S, Phan H, Nebe T, Urbaschek R, Koch T. Endothelin-1 impairs neutrophil respiratory burst and elimination of Escherichia coli in rabbits. Crit Care Med 2000; 28:1515-21. [PMID: 10834705 DOI: 10.1097/00003246-200005000-00043] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE During systemic inflammation, elevated levels of endothelin (ET)-1 have been reported. The aim of this study was to investigate the effects of ET-1 on neutrophil (PMN) respiratory burst, phagocytosis, and elimination of Escherichia coli from blood and tissues. DESIGN Prospective, randomized, controlled trial. SETTING Experimental laboratory in a university hospital. SUBJECTS A total of 18 female chinchilla rabbits. INTERVENTIONS To quantify the clearance process, defined numbers (10(8) colony-forming units) of E. coli were injected intravenously into anesthetized rabbits, 60 mins after onset of continuous 0.2 microg/kg/min ET-1 administration (n = 9) and after saline infusion (control group, n = 9), respectively. To evaluate potential effects of ET-1 on bacterial elimination and killing, blood clearance of E. coli and colonization of different organs were investigated. MEASUREMENTS Variables monitored were neutrophil respiratory burst and phagocytosis activity, rates of bacterial elimination from the blood, arterial blood pressure, blood gases, serum lactate concentrations, and nitrite and nitrate levels. The animals were killed 3 hrs after bacterial injection and tissue samples of liver, kidney, spleen, and lung were collected for bacterial counts. MAIN RESULTS Compared with the control group, ET-1 significantly impaired PMN respiratory burst (p < .05) and prolonged elimination of injected E. coli from the blood (p < .01), whereas phagocytosis functions remained unaltered. The reduced PMN burst activity after ET-1 was associated with a higher bacterial colonization of all organs (lung, p < .01; spleen, p < .05). Endothelin-1 induced increases in mean arterial pressure (p < .01) and serum lactate concentrations, whereas nitrite and nitrate levels remained unaltered. CONCLUSION Endothelin-1 impairs respiratory burst and bacterial clearance from the blood and tissue. Thus, elevated levels of ET-1 during sepsis could induce organ hypoperfusion and cause disturbances in immune functions, increasing the risk of bacterial infections.
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Affiliation(s)
- A Heller
- Department of Anesthesiology, University Hospital Carl Gustav Carus, Dresden, Germany.
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Zouki C, Baron C, Fournier A, Filep JG. Endothelin-1 enhances neutrophil adhesion to human coronary artery endothelial cells: role of ET(A) receptors and platelet-activating factor. Br J Pharmacol 1999; 127:969-79. [PMID: 10433505 PMCID: PMC1566081 DOI: 10.1038/sj.bjp.0702593] [Citation(s) in RCA: 91] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
1. The potent coronary vasoconstrictor, endothelin-1 (ET-1) may also regulate neutrophil traffic into tissues. The aim of the present study was to characterize the endothelin receptors responsible and to investigate the underlying mechanisms. 2. ET-1 (1 nM - 1 microM) markedly enhanced attachment of human neutrophils to lipopolysaccharide-, and to a lesser extent, to ET-1-activated human coronary artery endothelial cells (HCAEC). This can partially be blocked by monoclonal antibodies against E-selectin, L-selectin or CD18, whereas combination of the three antibodies inhibited adhesion by approximately 83%. Increases in neutrophil adhesion evoked by ET-1 were also blocked by the platelet-activating factor (PAF) antagonists, BN 52021 (50 microM) and WEB 2086 (10 microM). 3. ET-1 downregulated the expression of L-selectin and upregulated expression of CD11b/CD18 and CD45 on the neutrophil surface and induced gelatinase release with EC50 values of approximately 2 nM. These actions of ET-1 were almost completely prevented by the ET(A) receptor antagonist FR 139317 (1 microM) and the ET(A)/ET(B) receptor antagonist bosentan (10 microM), whereas the ET(B) receptor antagonist BQ 788 (1 microM) had no effect. ET-1 slightly increased the expression of E-selectin and ICAM-1 on HCAEC, that was prevented by BQ 788, but not by FR 139317. 4. Receptor binding studies indicated the presence of ET(B) receptors (KD: 40 pM) on phosphoramidon-treated HCAEC and the predominant expression of ET(A) receptors (KD: 38 pM) on neutrophils. 5. These results indicate that promotion by ET-1 of neutrophil adhesion to HCAEC is predominantly mediated through activation of ET(A) receptors on neutrophils and subsequent generation of PAF.
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Affiliation(s)
- Christine Zouki
- Research Center, Maisonneuve-Rosemont Hospital, Department of Medicine, University of Montréal, Montréal, Québec, Canada H1T 2M4
| | - Chantal Baron
- Research Center, Maisonneuve-Rosemont Hospital, Department of Medicine, University of Montréal, Montréal, Québec, Canada H1T 2M4
| | - Alain Fournier
- INRS-Santé, Pointe-Claire, Dorval, Québec, Canada H9R 1G6
| | - János G Filep
- Research Center, Maisonneuve-Rosemont Hospital, Department of Medicine, University of Montréal, Montréal, Québec, Canada H1T 2M4
- Author for correspondence:
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Liu X, Huang C. The changes of plasma endothelin in oleic acid-induced acute lung injury and their implication. Curr Med Sci 1999; 19:93-5. [PMID: 12840846 DOI: 10.1007/bf02886883] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/1999] [Indexed: 10/19/2022]
Abstract
The changes of pulmonary arterial and pulmonary venous plasma endothelin (ET) level in oleic acid (OA)--induced lung injury (ALI) rats were observed. After the ALI model of rats was established by intravenous injection of OA, blood samples were taken from a right cardiac catheter inserted via the right external jugular vein into the pulmonary artery to determine the plasma ET levels by using radioimmunoassay before OA injection, and 2 h and 4 h after OA injection. At the same time, arterial oxygen pressure (PaO2) and mean pulmonary arterial pressure (mPAP) were measured to evaluate the role of ET in acute lung injury. The results showed that the plasma ET levels after OA injection were significantly increased in OA group rats as compared with those in the controls, positively correlated with mPAP and negatively with PaO2. The plasma ET level in pulmonary vein was higher than in pulmonary artery, but no significant difference was found. It was concluded that ET, as a local or circulating hormone, might play an important role in pathophysiology of ALI.
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Affiliation(s)
- X Liu
- Department of Internal Medicine, Tongji Hospital, Tongji Medical University, Wuhan 430030
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