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Ogoshi T, Yatera K, Mukae H, Tsutsui M. Role of Nitric Oxide Synthases in Respiratory Health and Disease: Insights from Triple Nitric Oxide Synthases Knockout Mice. Int J Mol Sci 2024; 25:9317. [PMID: 39273265 PMCID: PMC11395504 DOI: 10.3390/ijms25179317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2024] [Revised: 08/26/2024] [Accepted: 08/26/2024] [Indexed: 09/15/2024] Open
Abstract
The system of nitric oxide synthases (NOSs) is comprised of three isoforms: nNOS, iNOS, and eNOS. The roles of NOSs in respiratory diseases in vivo have been studied by using inhibitors of NOSs and NOS-knockout mice. Their exact roles remain uncertain, however, because of the non-specificity of inhibitors of NOSs and compensatory up-regulation of other NOSs in NOS-KO mice. We addressed this point in our triple-n/i/eNOSs-KO mice. Triple-n/i/eNOSs-KO mice spontaneously developed pulmonary emphysema and displayed exacerbation of bleomycin-induced pulmonary fibrosis as compared with wild-type (WT) mice. Triple-n/i/eNOSs-KO mice exhibited worsening of hypoxic pulmonary hypertension (PH), which was reversed by treatment with sodium nitrate, and WT mice that underwent triple-n/i/eNOSs-KO bone marrow transplantation (BMT) also showed aggravation of hypoxic PH compared with those that underwent WT BMT. Conversely, ovalbumin-evoked asthma was milder in triple-n/i/eNOSs-KO than WT mice. These results suggest that the roles of NOSs are different in different pathologic states, even in the same respiratory diseases, indicating the diversity of the roles of NOSs. In this review, we describe these previous studies and discuss the roles of NOSs in respiratory health and disease. We also explain the current state of development of inorganic nitrate as a new drug for respiratory diseases.
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Affiliation(s)
- Takaaki Ogoshi
- Department of Respiratory Medicine, Kokura Memorial Hospital, 1-1 Asano, Kokura-kita-ku, Kitakyushu 803-0802, Japan;
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahata-nishi-ku, Kitakyushu 807-8555, Japan;
| | - Kazuhiro Yatera
- Department of Respiratory Medicine, University of Occupational and Environmental Health, Japan, 1-1 Iseigaoka, Yahata-nishi-ku, Kitakyushu 807-8555, Japan;
| | - Hiroshi Mukae
- Department of Respiratory Disease, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki 852-8501, Japan;
| | - Masato Tsutsui
- Department of Pharmacology, Graduate School of Medicine, University of the Ryukyus, 207 Uehara, Nishihara, Okinawa 903-0215, Japan
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Laiva AL, O'Brien FJ, Keogh MB. Dual delivery gene-activated scaffold directs fibroblast activity and keratinocyte epithelization. APL Bioeng 2024; 8:016104. [PMID: 38283135 PMCID: PMC10821797 DOI: 10.1063/5.0174122] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 01/12/2024] [Indexed: 01/30/2024] Open
Abstract
Fibroblasts are the most abundant cell type in dermal skin and keratinocytes are the most abundant cell type in the epidermis; both play a crucial role in wound remodeling and maturation. We aim to assess the functionality of a novel dual gene activated scaffold (GAS) on human adult dermal fibroblasts (hDFs) and see how the secretome produced could affect human dermal microvascular endothelial cells (HDMVECs) and human epidermal keratinocyte (hEKs) growth and epithelization. Our GAS is a collagen chondroitin sulfate scaffold loaded with pro-angiogenic stromal derived factor (SDF-1α) and/or an anti-aging β-Klotho plasmids. hDFs were grown on GAS for two weeks and compared to gene-free scaffolds. GAS produced a significantly better healing outcome in the fibroblasts than in the gene-free scaffold group. Among the GAS groups, the dual GAS induced the most potent pro-regenerative maturation in fibroblasts with a downregulation in proliferation (twofold, p < 0.05), fibrotic remodeling regulators TGF-β1 (1.43-fold, p < 0.01) and CTGF (1.4-fold, p < 0.05), fibrotic cellular protein α-SMA (twofold, p < 0.05), and fibronectin matrix deposition (twofold, p < 0.05). The dual GAS secretome also showed enhancements of paracrine keratinocyte pro-epithelializing ability (1.3-fold, p < 0.05); basement membrane regeneration through laminin (6.4-fold, p < 0.005) and collagen IV (8.7-fold, p < 0.005) deposition. Our findings demonstrate enhanced responses in dual GAS containing hDFs by proangiogenic SDF-1α and β-Klotho anti-fibrotic rejuvenating activities. This was demonstrated by activating hDFs on dual GAS to become anti-fibrotic in nature while eliciting wound repair basement membrane proteins; enhancing a proangiogenic HDMVECs paracrine signaling and greater epithelisation of hEKs.
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Affiliation(s)
| | | | - Michael B. Keogh
- Author to whom correspondence should be addressed:. Tel.: +973 17351450
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May J, Mitchell JA, Jenkins RG. Beyond epithelial damage: vascular and endothelial contributions to idiopathic pulmonary fibrosis. J Clin Invest 2023; 133:e172058. [PMID: 37712420 PMCID: PMC10503802 DOI: 10.1172/jci172058] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/16/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive scarring disease of the lung with poor survival. The incidence and mortality of IPF are rising, but treatment remains limited. Currently, two drugs can slow the scarring process but often at the expense of intolerable side effects, and without substantially changing overall survival. A better understanding of mechanisms underlying IPF is likely to lead to improved therapies. The current paradigm proposes that repetitive alveolar epithelial injury from noxious stimuli in a genetically primed individual is followed by abnormal wound healing, including aberrant activity of extracellular matrix-secreting cells, with resultant tissue fibrosis and parenchymal damage. However, this may underplay the importance of the vascular contribution to fibrogenesis. The lungs receive 100% of the cardiac output, and vascular abnormalities in IPF include (a) heterogeneous vessel formation throughout fibrotic lung, including the development of abnormal dilated vessels and anastomoses; (b) abnormal spatially distributed populations of endothelial cells (ECs); (c) dysregulation of endothelial protective pathways such as prostacyclin signaling; and (d) an increased frequency of common vascular and metabolic comorbidities. Here, we propose that vascular and EC abnormalities are both causal and consequential in the pathobiology of IPF and that fuller evaluation of dysregulated pathways may lead to effective therapies and a cure for this devastating disease.
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Engelbrecht E, Kooistra T, Knipe RS. The Vasculature in Pulmonary Fibrosis. CURRENT TISSUE MICROENVIRONMENT REPORTS 2022; 3:83-97. [PMID: 36712832 PMCID: PMC9881604 DOI: 10.1007/s43152-022-00040-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 05/23/2022] [Indexed: 02/02/2023]
Abstract
Purpose of Review The current paradigm of idiopathic pulmonary fibrosis (IPF) pathogenesis involves recurrent injury to a sensitive alveolar epithelium followed by impaired repair responses marked by fibroblast activation and deposition of extracellular matrix. Multiple cell types are involved in this response with potential roles suggested by advances in single-cell RNA sequencing and lung developmental biology. Notably, recent work has better characterized the cell types present in the pulmonary endothelium and identified vascular changes in patients with IPF. Recent Findings Lung tissue from patients with IPF has been examined at single-cell resolution, revealing reductions in lung capillary cells and expansion of a population of vascular cells expressing markers associated with bronchial endothelium. In addition, pre-clinical models have demonstrated a fundamental role for aging and vascular permeability in the development of pulmonary fibrosis. Summary Mounting evidence suggests that the endothelium undergoes changes in the context of fibrosis, and these changes may contribute to the development and/or progression of pulmonary fibrosis. Additional studies will be needed to further define the functional role of these vascular changes.
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Affiliation(s)
| | - Tristan Kooistra
- Division of Pulmonary and Critical Care Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA
| | - Rachel S. Knipe
- Division of Pulmonary and Critical Care Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA
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5
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Schaefer AK, Kiss A, Oszwald A, Nagel F, Acar E, Aliabadi-Zuckermann A, Hackl M, Zuckermann A, Kain R, Jakubowski A, Ferdinandy P, Hallström S, Podesser BK. Single Donor Infusion of S-Nitroso-Human-Serum-Albumin Attenuates Cardiac Isograft Fibrosis and Preserves Myocardial Micro-RNA-126-3p in a Murine Heterotopic Heart Transplant Model. Transpl Int 2022; 35:10057. [PMID: 35497886 PMCID: PMC9045410 DOI: 10.3389/ti.2022.10057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 03/17/2022] [Indexed: 11/17/2022]
Abstract
Objectives: Cold ischemia and subsequent reperfusion injury are non-immunologic cornerstones in the development of graft injury after heart transplantation. The nitric oxide donor S-nitroso-human-serum-albumin (S-NO-HSA) is known to attenuate myocardial ischemia-reperfusion (I/R)-injury. We assessed whether donor preservation with S-NO-HSA affects isograft injury and myocardial expression of GATA2 as well as miR-126-3p, which are considered protective against vascular and endothelial injury. Methods: Donor C57BL/6 mice received intravenous (0.1 μmol/kg/h) S-NO-HSA (n = 12), or 0.9% saline (control, n = 11) for 20 min. Donor hearts were stored in cold histidine-tryptophan-α-ketoglutarate-N solution for 12 h and underwent heterotopic, isogenic transplantation, except 5 hearts of each group, which were analysed immediately after preservation. Fibrosis was quantified and expression of GATA2 and miR-126-3p assessed by RT-qPCR after 60 days or immediately after preservation. Results: Fibrosis was significantly reduced in the S-NO-HSA group (6.47% ± 1.76 vs. 11.52% ± 2.16; p = 0.0023; 12 h-S-NO-HSA-hHTX vs. 12 h-control-hHTX). Expression of miR-126-3p was downregulated in all hearts after ischemia compared to native myocardium, but the effect was significantly attenuated when donors received S-NO-HSA (1 ± 0.27 vs. 0.33 ± 0.31; p = 0.0187; 12 h-S-NO-HSA-hHTX vs. 12 h-control-hHTX; normalized expression to U6 snRNA). Conclusion: Donor pre-treatment with S-NO-HSA lead to reduced fibrosis and preservation of myocardial miR-126-3p and GATA2 levels in murine cardiac isografts 60 days after transplantation.
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Affiliation(s)
- Anne-Kristin Schaefer
- Ludwig Boltzmann Institute for Cardiovascular Research, Center for Biomedical Research, Medical University of Vienna, Vienna, Austria.,Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Attila Kiss
- Ludwig Boltzmann Institute for Cardiovascular Research, Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - André Oszwald
- Department of Pathology, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Felix Nagel
- Ludwig Boltzmann Institute for Cardiovascular Research, Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | - Eylem Acar
- Ludwig Boltzmann Institute for Cardiovascular Research, Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
| | | | | | - Andreas Zuckermann
- Department of Cardiac Surgery, Medical University of Vienna, Vienna, Austria
| | - Renate Kain
- Department of Pathology, Medical University of Vienna, Vienna, Austria.,Comprehensive Cancer Center, Medical University of Vienna, Vienna, Austria
| | - Andrzej Jakubowski
- Department of Pharmacology, Jagiellonian University Medical College, Kraków, Poland.,Department of Anesthesiology and Intensive Care, Małopolska Orthopedic and Rehabilitation Hospital, Kraków, Poland
| | - Peter Ferdinandy
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Semmelweis University, Budapest, Hungary
| | - Seth Hallström
- Division of Physiological Chemistry, Otto Loewi Research Center, Medical University of Graz, Graz, Austria
| | - Bruno K Podesser
- Ludwig Boltzmann Institute for Cardiovascular Research, Center for Biomedical Research, Medical University of Vienna, Vienna, Austria
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6
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Inui N, Sakai S, Kitagawa M. Molecular Pathogenesis of Pulmonary Fibrosis, with Focus on Pathways Related to TGF-β and the Ubiquitin-Proteasome Pathway. Int J Mol Sci 2021; 22:6107. [PMID: 34198949 PMCID: PMC8201174 DOI: 10.3390/ijms22116107] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 05/27/2021] [Accepted: 06/02/2021] [Indexed: 02/07/2023] Open
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive and fatal interstitial lung disease. During the past decade, novel pathogenic mechanisms of IPF have been elucidated that have shifted the concept of IPF from an inflammatory-driven to an epithelial-driven disease. Dysregulated repair responses induced by recurrent epithelial cell damage and excessive extracellular matrix accumulation result in pulmonary fibrosis. Although there is currently no curative therapy for IPF, two medications, pirfenidone and nintedanib, have been introduced based on understanding the pathogenesis of the disease. In this review, we discuss advances in understanding IPF pathogenesis, highlighting epithelial-mesenchymal transition (EMT), the ubiquitin-proteasome system, and endothelial cells. TGF-β is a central regulator involved in EMT and pulmonary fibrosis. HECT-, RING finger-, and U-box-type E3 ubiquitin ligases regulate TGF-β-Smad pathway-mediated EMT via the ubiquitin-proteasome pathway. p27 degradation mediated by the SCF-type E3 ligase, Skp2, contributes to the progression of pulmonary fibrosis by promotion of either mesenchymal fibroblast proliferation, EMT, or both. In addition to fibroblasts as key effector cells in myofibroblast differentiation and extracellular matrix deposition, endothelial cells also play a role in the processes of IPF. Endothelial cells can transform into myofibroblasts; therefore, endothelial-mesenchymal transition can be another source of myofibroblasts.
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Affiliation(s)
- Naoki Inui
- Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan
| | - Satoshi Sakai
- Department of Molecular Biology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan;
| | - Masatoshi Kitagawa
- Department of Molecular Biology, Hamamatsu University School of Medicine, 1-20-1 Handayama, Higashi-ku, Hamamatsu, Shizuoka 431-3192, Japan;
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Isola G, Polizzi A, Ronsivalle V, Alibrandi A, Palazzo G, Lo Giudice A. Impact of Matrix Metalloproteinase-9 during Periodontitis and Cardiovascular Diseases. Molecules 2021; 26:molecules26061777. [PMID: 33810003 PMCID: PMC8004886 DOI: 10.3390/molecules26061777] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 03/18/2021] [Accepted: 03/19/2021] [Indexed: 02/07/2023] Open
Abstract
Matrix metalloproteinase-9 (MMP-9) has been shown to play a key role in endothelial function and perhaps pivotal in the correlation between periodontal disease and cardiovascular disease (CVD). For the study, the impact of MMP-9 of periodontitis and CVD on serum and saliva concentrations was analyzed. For the study patients with periodontitis (n = 31), CVD (n = 31), periodontitis + CVD (n = 31), and healthy patients (n = 31) were enrolled. Clinical and demographic characteristics as well as serum and salivary MMP-9 were evaluated. MMP-9 concentrations in serum and saliva were statistically elevated in patients with CVD (p < 0.01) and in patients with periodontitis plus CVD (p < 0.001) compared to patients with periodontitis and healthy subjects. Multivariate regression analysis showed that c-reactive protein (hs-CRP) was the only significant predictor for MMP-9 serum (p < 0.001), whereas hs-CRP (p < 0.001) and total cholesterol (p = 0.029) were the statistically significant salivary MMP-9 predictors. This study evidenced that patients with CVD and periodontitis + CVD presented elevated MMP-9 concentrations in serum and saliva compared to patients with periodontitis and healthy subjects. Furthermore, hs-CRP was a negative predictor of serum and salivary MMP-9.
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Affiliation(s)
- Gaetano Isola
- Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy; (A.P.); (V.R.); (G.P.); (A.L.G.)
- Correspondence: ; Tel.: +39-095-378-2453
| | - Alessandro Polizzi
- Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy; (A.P.); (V.R.); (G.P.); (A.L.G.)
| | - Vincenzo Ronsivalle
- Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy; (A.P.); (V.R.); (G.P.); (A.L.G.)
| | - Angela Alibrandi
- Department of Economical, Business and Environmental Sciences and Quantitative Methods, University of Messina, 98122 Messina, Italy;
| | - Giuseppe Palazzo
- Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy; (A.P.); (V.R.); (G.P.); (A.L.G.)
| | - Antonino Lo Giudice
- Department of General Surgery and Surgical-Medical Specialties, School of Dentistry, University of Catania, 95124 Catania, Italy; (A.P.); (V.R.); (G.P.); (A.L.G.)
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8
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Zhao YL, Pu SB, Qi Y, Wu BF, Shang JH, Liu YP, Hu D, Luo XD. Pharmacological effects of indole alkaloids from Alstonia scholaris (L.) R. Br. on pulmonary fibrosis in vivo. JOURNAL OF ETHNOPHARMACOLOGY 2021; 267:113506. [PMID: 33148433 DOI: 10.1016/j.jep.2020.113506] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 10/02/2020] [Accepted: 10/19/2020] [Indexed: 06/11/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Alstonia scholaris (L.) R. Br. (Apocynaceae) is a Dai folk medicine for the treatment of lung diseases in China. AIM OF THE STUDY The present study investigated the anti-pulmonary fibrosis effects of total alkaloids (TA) and the potential active ingredients and its possible mechanism. MATERIALS AND METHODS After intratracheal instillation of bleomycin (BLM, 5 mg/kg), mice were divided into ten groups, and orally treated with the corresponding samples once daily for 28 days. The effect of indole alkaloids was determined through analysis of cytokines, as well as histopathological examinations and gene expressions. RESULTS Severe lung fibrosis was observed in the BLM-treated mice on day 28. However, the administration of TA significantly ameliorated the pathological changes in the lungs, decreased the content of Krebs von den Lungen-6, lactate dehydrogenase, transforming growth factor-β (TGF-β), hydroxyproline, type I collagen, and malonaldehyde, and enhanced the activity of superoxide dismutase in the serum and lung tissues. In addition, the enhanced TGF-β and matrix metalloproteinase-1 (MMP-1) expressions in BLM-induced mice were obviously weakened by indole alkaloids, as well as the ratio of matrix metalloproteinase-1 to tissue inhibitor of metalloproteinase-1 was decreased. Moreover, picrinine and scholaricine yielded markedly better values in the aforementioned indices than those in other samples, indicating that they may be the active ingredients of alkaloids. CONCLUSIONS TA exerted protective effects against BLM-induced pulmonary fibrosis by reducing collagen deposition through TGF-β/MMP-1 pathway.
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Affiliation(s)
- Yun-Li Zhao
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China
| | - Shi-Biao Pu
- Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650500, PR China
| | - Yan Qi
- Yunnan Provincial Hospital of TCM, Yunnan Province, Kunming, 650021, PR China
| | - Bai-Fen Wu
- Yunnan University of Business Management, Yunnan Province, Kunming, 650500, PR China
| | - Jian-Hua Shang
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China
| | - Ya-Ping Liu
- State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China
| | - Di Hu
- Chinese Materia Medica, Yunnan University of Chinese Medicine, Kunming, 650500, PR China
| | - Xiao-Dong Luo
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education and Yunnan Province, School of Chemical Science and Technology, Yunnan University, Kunming, 650091, PR China; State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, 650201, PR China.
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Zhang Y, Li Y, Ye Z, Ma H. Expression of Matrix Metalloproteinase-2, Matrix Metalloproteinase-9, Tissue Inhibitor of Metalloproteinase-1, and Changes in Alveolar Septa in Patients with Chronic Obstructive Pulmonary Disease. Med Sci Monit 2020; 26:e925278. [PMID: 33070147 PMCID: PMC7580176 DOI: 10.12659/msm.925278] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Background This study investigated the relationship between the pathological alteration of alveolar septa and (1) pulmonary function and (2) matrix metalloproteinase (MMP)-2, MMP-9, and tissue inhibitor matrix metalloproteinase 1 (TIMP-1) expression in chronic obstructive pulmonary disease (COPD). Material/Methods Sixty patients with pulmonary disease were divided into control (n=20) and COPD (n=40) groups. Postoperative lung tissue specimens were examined. Hematoxylin and eosin and elastin van Gieson staining detected pathological alterations of pulmonary alveolar septa. Septa thickness was measured. MMP-2, MMP-9, and TIMP-1 expression levels were detected by immunohistochemical staining. Correlations were determined by Pearson analysis. Results Forced expiratory volume in 1 s (FEV1), forced vital capacity, FEV1 percent predicted (FEV1%pre), and diffusion capacity of carbon monoxide percent predicted (DLCO%pre) in COPD patients were significantly lower than in those of the control group (P<0.05). MMP-2, MMP-9, and TIMP-1 expression levels were significantly higher in the COPD group than in control, especially the severe group (P<0.05). Septa thickness was negatively correlated with FEV1%pre (r=−0.335; P<0.05) and positively correlated with MMP-2 and TIMP-1 expression (P<0.05). Proportion of collagenous fiber was negatively correlated with FEV1%pre and DLCO%pre (P<0.01), and positively correlated with MMP-2, MMP-9, and TIMP-1 expression (P<0.01). Proportion of elastic fibers was negatively correlated with collagenous fiber. Conclusions The pathological alteration of alveolar septa was correlated with pulmonary function and expression levels of MMP-2, MMP-9, and TIMP-1, which can play vital roles in COPD progression.
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Affiliation(s)
- Yongxiang Zhang
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China (mainland)
| | - Yuechuan Li
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China (mainland)
| | - Zhen Ye
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China (mainland)
| | - Hui Ma
- Department of Respiratory and Critical Care Medicine, Tianjin Chest Hospital, Tianjin, China (mainland)
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Kseibati MO, Shehatou GSG, Sharawy MH, Eladl AE, Salem HA. Nicorandil ameliorates bleomycin-induced pulmonary fibrosis in rats through modulating eNOS, iNOS, TXNIP and HIF-1α levels. Life Sci 2020; 246:117423. [PMID: 32057902 DOI: 10.1016/j.lfs.2020.117423] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2019] [Revised: 01/29/2020] [Accepted: 02/09/2020] [Indexed: 02/06/2023]
Abstract
Bleomycin (BLM) is one of the most common anti-cancer drugs used to treat numerous types of tumors. However, pulmonary toxicity is considered the most dramatic effect of BLM. Therefore, BLM has been frequently used for induction of pulmonary fibrosis. This study aimed to evaluate the effect of nicorandil on BLM-induced pulmonary fibrosis and explore the possible mechanisms. BLM was instilled intratracheally into male Sprague-Dawley rats as a single dose (5 mg/kg) and oral nicorandil was given (30 mg/kg/day) for 6 weeks after BLM challenge. At the end of experimental period, rats were sacrificed, and lung histopathology and biochemical parameters were evaluated. Nicorandil therapy attenuated lung inflammation and fibrosis elicited by BLM. Nicorandil significantly reduced total protein content, lactate dehydrogenase (LDH) activity and total and differential cell counts. Moreover, nicorandil diminished lung levels of malondialdehyde and total nitrite/nitrate, in addition to increasing lung contents of reduced glutathione and superoxide dismutase activity. Nicorandil reduced lung and bronchoalveolar lavage fluid contents of hypoxia inducible factor-1α (HIF-1α) and lung content of thioredoxin-interacting protein (TXNIP). Besides, nicorandil significantly improved histological lesions and reduced collagen deposition as well as hydroxyproline content. Immunohistochemical examination revealed that nicorandil-treated rats exhibited significant diminutions in protein expression levels of transforming growth factor beta-1(TGF-β1) and inducible nitric oxide synthase (iNOS) and enhanced pulmonary protein expression of endothelial NOS (eNOS). In conclusion, these results illustrate the possible potential effects of nicorandil for managing pulmonary fibrosis caused by BLM.
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Affiliation(s)
- Mohammed O Kseibati
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - George S G Shehatou
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt; Department of Pharmacology and Biochemistry, Faculty of Pharmacy, Delta University for science and Technology, Gamasa City, Egypt
| | - Maha H Sharawy
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt.
| | - Ahmed E Eladl
- Department of Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Hatem A Salem
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
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11
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Yang L, Chen PP, Luo M, Shi WL, Hou DS, Gao Y, Xu SF, Deng J. Inhibitory effects of total ginsenoside on bleomycin-induced pulmonary fibrosis in mice. Biomed Pharmacother 2019; 114:108851. [DOI: 10.1016/j.biopha.2019.108851] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 04/01/2019] [Accepted: 04/02/2019] [Indexed: 01/18/2023] Open
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Abdulle AE, Diercks GFH, Feelisch M, Mulder DJ, van Goor H. The Role of Oxidative Stress in the Development of Systemic Sclerosis Related Vasculopathy. Front Physiol 2018; 9:1177. [PMID: 30197602 PMCID: PMC6117399 DOI: 10.3389/fphys.2018.01177] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 08/06/2018] [Indexed: 12/11/2022] Open
Abstract
Systemic sclerosis (SSc) is a rare connective tissue disease characterized by autoimmunity, vasculopathy, and progressive fibrosis typically affecting multiple organs including the skin. SSc often is a lethal disorder, because effective disease-modifying treatment still remains unavailable. Vasculopathy with endothelial dysfunction, perivascular infiltration of mononuclear cells, vascular wall remodeling and rarefaction of capillaries is the hallmark of the disease. Most patients present with vasospastic attacks of the digital arteries referred to as 'Raynaud's phenomenon,' which is often an indication of an underlying widespread vasculopathy. Although autoimmune responses and inflammation are both found to play an important role in the pathogenesis of this vasculopathy, no definite initiating factors have been identified. Recently, several studies have underlined the potential role of oxidative stress in the pathogenesis of SSc vasculopathy thereby proposing a new aspect in the pathogenesis of this disease. For instance, circulating levels of reactive oxygen species (ROS) related markers have been found to correlate with SSc vasculopathy, the formation of fibrosis and the production of autoantibodies. Excess ROS formation is well-known to lead to endothelial cell (EC) injury and vascular complications. Collectively, these findings suggest a potential role of ROS in the initiation and progression of SSc vasculopathy. In this review, we present the background of oxidative stress related processes (e.g., EC injury, autoimmunity, inflammation, and vascular wall remodeling) that may contribute to SSc vasculopathy. Finally, we describe the use of oxidative stress related read-outs as clinical biomarkers of disease activity and evaluate potential anti-oxidative strategies in SSc.
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Affiliation(s)
- Amaal E. Abdulle
- Department of Internal Medicine, Division of Vascular Medicine, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Gilles F. H. Diercks
- Section Pathology, Department of Pathology and Medical Biology, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Martin Feelisch
- Clinical and Experimental Sciences, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Douwe J. Mulder
- Department of Internal Medicine, Division of Vascular Medicine, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
| | - Harry van Goor
- Section Pathology, Department of Pathology and Medical Biology, University Medical Centre Groningen, University of Groningen, Groningen, Netherlands
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Kato S, Inui N, Hakamata A, Suzuki Y, Enomoto N, Fujisawa T, Nakamura Y, Watanabe H, Suda T. Changes in pulmonary endothelial cell properties during bleomycin-induced pulmonary fibrosis. Respir Res 2018; 19:127. [PMID: 29940932 PMCID: PMC6019800 DOI: 10.1186/s12931-018-0831-y] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 06/14/2018] [Indexed: 01/05/2023] Open
Abstract
BACKGROUND Pulmonary fibrosis is a progressive and lethal disease characterized by damage to the lung parenchyma with excess extracellular matrix deposition. The involvement of endothelial cells in fibrosis development is unclear. METHODS We isolated pulmonary endothelial cells, using a magnetic-activated cell sorting system, from mice with pulmonary fibrosis induced by intratracheal bleomycin. We characterized endothelial cells isolated at various times in the course of pulmonary fibrosis development. RESULTS Inflammatory cell infiltration was observed at 7 days after bleomycin administration, and fibrotic changes with increased collagen content were observed on day 21. Endothelial cells were isolated at these two timepoints. Levels of von Willebrand factor, plasminogen activator inhibitor-1 and matrix metalloproteinase-12 were elevated in lung endothelial cells isolated from bleomycin-treated mice at days 7 and 21. This indicated that intratracheal bleomycin administration induced endothelium injury. Expression of fibrogenic mediators, transforming growth factor (TGF)-β, connective tissue growth factor and platelet-derived growth factor-C was elevated in the cells from bleomycin-treated, compared with untreated, lungs. When endothelial cells were treated with TGF-β, α-smooth muscle actin (SMA) expression and collagen production were increased only in those cells from bleomycin-treated mouse lungs. Thapsigargin-induced prostaglandin I2 and nitric oxide production, decreased in endothelial cells from bleomycin-treated mouse lungs, compared with controls, was further suppressed by TGF-β. CONCLUSION Bleomycin administration induced functional changes in lung endothelial cells, indicating potential involvement of endothelium in pulmonary fibrogenesis.
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Affiliation(s)
- Shinpei Kato
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
| | - Naoki Inui
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan.
- Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan.
| | - Akio Hakamata
- Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
| | - Yuzo Suzuki
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
| | - Noriyuki Enomoto
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
| | - Tomoyuki Fujisawa
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
| | - Yutaro Nakamura
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
| | - Hiroshi Watanabe
- Department of Clinical Pharmacology and Therapeutics, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
| | - Takafumi Suda
- Second Division, Department of Internal Medicine, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, 431-3192, Japan
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Luan Y, Zhang L, Chao S, Liu X, Li K, Wang Y, Zhang Z. Mesenchymal stem cells in combination with erythropoietin repair hyperoxia-induced alveoli dysplasia injury in neonatal mice via inhibition of TGF-β1 signaling. Oncotarget 2018; 7:47082-47094. [PMID: 27191651 PMCID: PMC5216925 DOI: 10.18632/oncotarget.9314] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 04/11/2016] [Indexed: 02/06/2023] Open
Abstract
The aim of the present study is to investigate the protection effects of bone marrow mesenchymal stem cells (MSCs) in combination with EPO against hyperoxia-induced bronchopulmonary dysplasia (BPD) injury in neonatal mice. BPD model was prepared by continuous high oxygen exposure, 1×106 bone marrow MSCs and 5000U/kg recombinant human erythropoietin (EPO) were injected respectively. Results showed that administration of MSCs, EPO especially MSCs+EPO significant attenuated hyperoxia-induced lung damage with a decrease of fibrosis, radical alveolar counts and inhibition of the occurrence of epithelial-mesenchymal transition (EMT). Furthermore, MSCs+EPO co-treatment more significantly suppressed the levels of transforming growth factor-β1(TGF-β1) than MSCs or EPO alone. Collectively, these results suggested that MSCs, EPO in particular MSCs+EPO co-treatment could promote lung repair in hyperoxia-induced alveoli dysplasia injury via inhibition of TGF-β1 signaling pathway to further suppress EMT process and may be a promising therapeutic strategy.
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Affiliation(s)
- Yun Luan
- Central Research Laboratory, The Second Hospital of Shandong University, Jinan, China
| | - Luan Zhang
- Department of Pediatrics, The Second Hospital of Shandong University, Jinan, China
| | - Sun Chao
- Central Research Laboratory, The Second Hospital of Shandong University, Jinan, China
| | - Xiaoli Liu
- Department of Hematology, The Second Hospital of Shandong University, Jinan, China
| | - Kaili Li
- Central Research Laboratory, The Second Hospital of Shandong University, Jinan, China
| | - Yibiao Wang
- Department of Pediatrics, The Second Hospital of Shandong University, Jinan, China
| | - Zhaohua Zhang
- Department of Pediatrics, The Second Hospital of Shandong University, Jinan, China
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15
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Chen C, Yun XJ, Liu LZ, Guo H, Liu LF, Chen XL. Exogenous nitric oxide enhances the prophylactic effect of aminoguanidine, a preferred iNOS inhibitor, on bleomycin-induced fibrosis in the lung: Implications for the direct roles of the NO molecule in vivo. Nitric Oxide 2017; 70:31-41. [PMID: 28757441 DOI: 10.1016/j.niox.2017.07.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 06/12/2017] [Accepted: 07/25/2017] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Inducible nitric oxide synthase (iNOS) aggravates and endothelial nitric oxide synthase (eNOS) ameliorates fibrosis in the lung. Our previous study demonstrated that aminoguanidine (AG), a preferred iNOS inhibitor, prevents bleomycin-induced injury and fibrosis in the lung. The diethylenetriamine nitric oxide adduct (DETA/NO) is a slow-release NO donor. Here, to clarify the exact role of the nitric oxide (NO) molecule in the pathogenesis of pulmonary fibrosis in vivo, we observed the effects of inhalation of aerosolized DETA/NO on fibrosis in the lungs of bleomycin-exposed rats with AG treatment, including the effects on the myofibroblast number, collagen deposition, peroxynitrite anion (ONOO-) formation, and injury in the lung. DESIGN AND METHODS Rats received a single intratracheal instillation of bleomycin or normal saline (NS) on day 0, followed by a daily intraperitoneal injection of AG or NS from day 1 to day 13. Each group was additionally given a daily inhalation of DETA/NO or placebo from day 1 to day 13. On day 14, half of the rats in each group was euthanized, and plasma nitrite and nitrate (NOx), myofibroblasts, type I collagen, ONOO- and injury in the lung were estimated by the Griess reaction, western blotting, immunohistochemical staining, sirius red staining, and hematoxylin and eosin (HE) staining, respectively. On day 28, the other half of the rats in each group was euthanized, and the total collagen of the lung was evaluated by hydroxyproline assay. RESULTS ① At the day 14 time point, AG reduced the plasma NOx level in bleomycin rats, while this drug had no significant effect on sham rats. Inhalation of aerosolized DETA/NO increased the plasma NOx level of bleomycin + AG rats, sham rats and sham + AG rats. However, due to large areas of airspace obliteration in the lungs of bleomycin rats, DETA/NO inhalation had no significant effect on the plasma NOx level in these rats. ② At the day 14 time point, AG reduced ONOO- formation (marked by nitrotyrosine, NT), injury, myofibroblast number, and type I collagen deposition in the lungs of bleomycin rats, while this drug had no significant impact on the above parameters in the lungs of sham rats. Interestingly, DETA/NO inhalation enhanced the preventive effects afforded by AG on myofibroblast number and type I collagen deposition, but had no significant impact on ONOO- and injury in lung. ③ At the day 28 time point, because rats were not exposed to DETA/NO after day 13, there was no significant difference of the plasma NOx level in sham rats, sham + AG rats, bleomycin rats, and bleomycin + AG rats between DETA/NO inhalation and placebo inhalation. Interestingly, rats administered both DETA/NO and AG still showed a reduction in total collagen of the entire lung compared to rats administered AG alone at this time point. CONCLUSIONS Exogenous NO enhances the prophylactic effect afforded by AG on the myofibroblast number and collagen deposition in the lungs of bleomycin-treated rats in vivo. These results suggest that NO has a direct antifibrotic effect in lungs, except for the formation of ONOO- in the development of pulmonary fibrosis in vivo.
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Affiliation(s)
- Chao Chen
- Department of Pathophysiology, Institute of Basic Medicine, Hebei Medical University, 361 Zongshan East Road, Shijiazhuang, Hebei, 050017, PR China; Department of Cardiology, Cangzhou Central Hospital, Cangzhou, Hebei, 061014, PR China
| | - Xiao-Jing Yun
- Department of Pathophysiology, Institute of Basic Medicine, Hebei Medical University, 361 Zongshan East Road, Shijiazhuang, Hebei, 050017, PR China
| | - Li-Ze Liu
- Department of Pathophysiology, Institute of Basic Medicine, Hebei Medical University, 361 Zongshan East Road, Shijiazhuang, Hebei, 050017, PR China
| | - Hong Guo
- Department of Pathophysiology, Institute of Basic Medicine, Hebei Medical University, 361 Zongshan East Road, Shijiazhuang, Hebei, 050017, PR China
| | - Lian-Feng Liu
- Department of Pathophysiology, Institute of Basic Medicine, Hebei Medical University, 361 Zongshan East Road, Shijiazhuang, Hebei, 050017, PR China
| | - Xiao-Ling Chen
- Department of Pathophysiology, Institute of Basic Medicine, Hebei Medical University, 361 Zongshan East Road, Shijiazhuang, Hebei, 050017, PR China.
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Zhang X, Liu Y, Shao R, Li W. Cdc42-interacting protein 4 silencing relieves pulmonary fibrosis in STZ-induced diabetic mice via the Wnt/GSK-3β/β-catenin pathway. Exp Cell Res 2017; 359:284-290. [PMID: 28720386 DOI: 10.1016/j.yexcr.2017.07.018] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Revised: 06/20/2017] [Accepted: 07/15/2017] [Indexed: 10/19/2022]
Abstract
Cdc42-interacting protein-4 (CIP4) has been reported to be closely associated with diabetic nephropathy in rat. However, little is known about the correlation between CIP4 and diabetic pulmonary fibrosis (PF) in mice. Here, diabetes was induced by streptozotocin (STZ), and later lung tissue was collected and subjected to hematoxylin and eosin (H & E) staining for morphological examination. The distinct up-regulation of CIP4 was observed in diabetic PF mice. CIP4 silencing increased overall weight and decreased lung weight. Simultaneously, levels of TGF-β1, collagen-1, collagen-3 and hydroxyproline were down-regulated by CIP4 silencing, accompanied by an increase in MMP-9 expression and a decrease in TIMP-1 expression. Down-regulation of CIP4 suppressed EMT by decreasing the expression of vimentin and α-SMA as well as augmenting E-cadherin expression. Mechanistic analysis confirmed that CIP4 silencing inhibited p-GSK-3β and β-catenin expression, indicating that CIP4 down-regulation attenuated the activation of Wnt/GSK-3β/β-catenin signaling. However, β-catenin overexpression ameliorated the inhibitory effect of CIP4 down-regulation on lung tissue damage, fibrosis-related cytokines and EMT. These results suggest that CIP4 silencing can efficiently alleviate STZ-induced PF in mice, perhaps through suppressing Wnt/GSK-3β/β-catenin signaling.
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Affiliation(s)
- Xiaoping Zhang
- Department of Respiration Medicine, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, Henan, China
| | - Ying Liu
- Department of Respiration Medicine, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, Henan, China
| | - Runxia Shao
- Department of Respiration Medicine, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, Henan, China.
| | - Wei Li
- The Second Department of Handsurgery and Microsurgery, Zhengzhou Orthopaedics Hospital, Zhengzhou 450052, Henan, China
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17
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Tao L, Yang J, Cao F, Xie H, Zhang M, Gong Y, Zhang C. Mogroside IIIE, a Novel Anti-Fibrotic Compound, Reduces Pulmonary Fibrosis through Toll-Like Receptor 4 Pathways. J Pharmacol Exp Ther 2017; 361:268-279. [DOI: 10.1124/jpet.116.239137] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Accepted: 03/07/2017] [Indexed: 12/24/2022] Open
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Neotuberostemonine attenuates bleomycin-induced pulmonary fibrosis by suppressing the recruitment and activation of macrophages. Int Immunopharmacol 2016; 36:158-164. [DOI: 10.1016/j.intimp.2016.04.016] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Revised: 04/10/2016] [Accepted: 04/13/2016] [Indexed: 12/19/2022]
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You XY, Xue Q, Fang Y, Liu Q, Zhang CF, Zhao C, Zhang M, Xu XH. Preventive effects of Ecliptae Herba extract and its component, ecliptasaponin A, on bleomycin-induced pulmonary fibrosis in mice. JOURNAL OF ETHNOPHARMACOLOGY 2015; 175:172-180. [PMID: 26385580 DOI: 10.1016/j.jep.2015.08.034] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 08/20/2015] [Accepted: 08/25/2015] [Indexed: 06/05/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ecliptae Herba, a nourishing traditional Chinese medicine, is also a folk medicine for the treatment of lung diseases. AIM OF THE STUDY To investigate the anti-fibrosis effects and the underlying mechanism of the extract of Ecliptae Herba and its potential active components. MATERIALS AND METHODS The resulting extract (EXT) was prepared from the 80% ethanol extract of Ecliptae Herba. After intratracheally administrated with bleomycin (BLM, 5mg/kg), mice were orally treated with EXT at 2.5, 1.25, 0.625 g/kg and eclipta saponin A (ESA) at 80 mg/kg once daily for 28 day. The bodyweight, survival rate, pathological changes of lung and levels of hydroxyproline (HYP) were used to evaluate the anti-fibrotic effects. The malonaldehyde (MDA), superoxidae dismutase (SOD) activity, and the protein expressions of matrix metalloproteinase (MMP)-2, 9, tissue inhibitor of metalloproteinase-1 (TIMP-1), cyclooxygenase-2 (COX-2), α-smooth muscle actin (α-SMA) and transforming growth factor-β1 (TGF-β1) in lung tissue were analyzed by kits or western blot. RESULTS Compared with BLM group, EXT administration could significantly ameliorated the pathological changes of lung, decreased the HYP content, enhanced the SOD activity, and reduced the MDA content of lung tissues. In mechanism, EXT significantly alleviated the levels of COX-2, TGF-β1, MMP-2 and α-SMA, as well as elevated the ratio value of MMP-9/TIMP-1. Additionally, the anti-fibrosis effects of ESA, a large amount of saponins isolated from Eclipta prostrata , was also evaluated by the BLM-induced model. The results showed that ESA could block BLM-induced histological changes of lung tissue and decrease the high levels of TGF-β1 and α-SMA. CONCLUSIONS Ecliptae Herba has protective effects against the pulmonary fibrosis induced by BLM via reducing the oxidative stress, lung tissue inflammation, and the subsequent epithelial-mesenchymal transition. The active chemical constituents may be involved with triterpenoid saponins, such as ESA.
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Affiliation(s)
- Xin-Yi You
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Qian Xue
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Yue Fang
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Qianyu Liu
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Chao Feng Zhang
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China.
| | - Ceng Zhao
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Mian Zhang
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
| | - Xiang-Hong Xu
- Research Department of Pharmacognosy, China Pharmaceutical University, 639 Longmian Road, Nanjing 211198, PR China
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Wang H, Li D, Du Z, Huang MT, Cui X, Lu Y, Li C, Woo SL, Conney AH, Zheng X, Zhang K. Antioxidant and anti-inflammatory properties of Chinese ilicifolius vegetable (Acanthopanax trifoliatus (L) Merr) and its reference compounds. Food Sci Biotechnol 2015. [DOI: 10.1007/s10068-015-0144-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Jiang B, Deng Q, Huo Y, Li W, Shibuya M, Luo J. Endothelial Gab1 deficiency aggravates splenomegaly in portal hypertension independent of angiogenesis. Am J Physiol Gastrointest Liver Physiol 2015; 308:G416-26. [PMID: 25501549 DOI: 10.1152/ajpgi.00292.2014] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Certain pathological changes, including angiogenesis, actively contribute to the pathogenesis of splenomegaly in portal hypertension (PH), although the detailed molecular and cellular mechanisms remain elusive. In this study, we demonstrated that endothelial Grb-2-associated binder 1 (Gab1) plays a negative role in PH-associated splenomegaly independent of angiogenesis. PH, which was induced by partial portal vein ligation, significantly enhanced Gab1 expression in endothelial cells in a time-dependent manner. Compared with controls, endothelium-specific Gab1 knockout (EGKO) mice exhibited a significant increase in spleen size while their PH levels remained similar. Pathological analysis indicated that EGKO mice developed more severe hyperactive white pulp and fibrosis in the enlarged spleen but less angiogenesis in both the spleen and mesenteric tissues. Mechanistic studies showed that the phosphorylation of endothelial nitric oxide synthase (eNOS) in EGKO mice was significantly lower than in controls. In addition, the dysregulation of fibrosis and inflammation-related transcription factors [e.g., Krüppel-like factor (KLF) 2 and KLF5] and the upregulation of cytokine genes (e.g., TNF-α and IL-6) were observed in EGKO mice. We thus propose that endothelial Gab1 mediates multiple pathways in inhibition of the pathogenesis of splenomegaly in PH via prevention of endothelial dysfunction and overproduction of proinflammatory/profibrotic cytokines.
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Affiliation(s)
- Beibei Jiang
- Laboratory of Vascular Biology, Institute of Molecular Medicine, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing, China
| | - Qiuping Deng
- Laboratory of Vascular Biology, Institute of Molecular Medicine, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing, China
| | - Yingqing Huo
- Laboratory of Vascular Biology, Institute of Molecular Medicine, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing, China
| | - Wei Li
- People's Hospital, Peking University, Beijing, China; and
| | - Masabumi Shibuya
- Institute of Physiology and Medicine, Jobu University, Takasaki, Japan
| | - Jincai Luo
- Laboratory of Vascular Biology, Institute of Molecular Medicine, Beijing Key Laboratory of Cardiometabolic Molecular Medicine, Peking University, Beijing, China;
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Nitric oxide exerts protective effects against bleomycin-induced pulmonary fibrosis in mice. Respir Res 2014; 15:92. [PMID: 25092105 PMCID: PMC4237963 DOI: 10.1186/s12931-014-0092-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2014] [Accepted: 07/29/2014] [Indexed: 01/04/2023] Open
Abstract
BACKGROUND Increased expression of nitric oxide synthase (NOS) and an increase in plasma nitrite plus nitrate (NOx) have been reported in patients with pulmonary fibrosis, suggesting that nitric oxide (NO) plays an important role in its development. However, the roles of the entire NO and NOS system in the pathogenesis of pulmonary fibrosis still remain to be fully elucidated. The aim of the present study is to clarify the roles of NO and the NOS system in pulmonary fibrosis by using the mice lacking all three NOS isoforms. METHODS Wild-type, single NOS knockout and triple NOS knockout (n/i/eNOS-/-) mice were administered bleomycin (BLM) intraperitoneally at a dose of 8.0 mg/kg/day for 10 consecutive days. Two weeks after the end of the procedure, the fibrotic and inflammatory changes of the lung were evaluated. In addition, we evaluated the effects of long-term treatment with isosorbide dinitrate, a NO donor, on the n/i/eNOS-/- mice with BLM-induced pulmonary fibrosis. RESULTS The histopathological findings, collagen content and the total cell number in bronchoalveolar lavage fluid were the most severe/highest in the n/i/eNOS-/- mice. Long-term treatment with the supplemental NO donor in n/i/eNOS-/- mice significantly prevented the progression of the histopathological findings and the increase of the collagen content in the lungs. CONCLUSIONS These results provide the first direct evidence that a lack of all three NOS isoforms led to a deterioration of pulmonary fibrosis in a BLM-treated murine model. We speculate that the entire endogenous NO and NOS system plays an important protective role in the pathogenesis of pulmonary fibrosis.
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Kwon JS, Kim YS, Cho AS, Cho HH, Kim JS, Hong MH, Jeong HY, Kang WS, Hwang KK, Bae JW, Jeong MH, Cho MC, Ahn Y. Regulation of MMP/TIMP by HUVEC transplantation attenuates ventricular remodeling in response to myocardial infarction. Life Sci 2014; 101:15-26. [PMID: 24560960 DOI: 10.1016/j.lfs.2014.02.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2013] [Revised: 01/29/2014] [Accepted: 02/07/2014] [Indexed: 01/10/2023]
Abstract
AIMS We elucidated the therapeutic potential of human umbilical vein endothelial cells (HUVECs) for ameliorating progressive heart failure in a myocardial infarction (MI) rat model. MAIN METHODS MI was induced by ligation of left anterior descending artery, and HUVEC was transplanted 1week after MI. Cardiac function was evaluated by echocardiography, and histological analyses were performed. KEY FINDINGS Phosphate-buffered saline (MI-V, n=5) or HUVEC (MI-HV, n=5) were injected into the border zone and infarcted area 7days after ligation of the left coronary artery in rats. The MI-HV group showed attenuation of left ventricular (LV) remodeling compared with the MI-V group. In the infarcted myocardium, a few of injected HUVEC was retained up to 28days. The ratios of matrix metalloproteinase (MMP)-2 or MMP-9 to tissue inhibitor of metalloproteinase (TIMP)-1 or TIMP-3 were decreased in the MI-HV group compared with the MI-V group. In vivo zymography analysis showed that HUVEC transplantation decreased the activities of MMP-2 and MMP-9. In immunohistochemistry, decreased MMP-2 and increased TIMP-1 and TIMP-3 expression were observed at 48h after HUVEC transplantation. These effects on MMP/TIMP balance were inhibited by L-NAME administration (an eNOS inhibitor, 10mg/kg). NOS inhibition decreased the protein expressions of TIMP-1 and TIMP-3 but did not change the protein expressions of MMP-2 and MMP-9. SIGNIFICANCE Our data suggest that altered balance between MMP and TIMP by HUVEC transplantation contributed to attenuation of ventricular remodeling after MI via eNOS.
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Affiliation(s)
- Jin-Sook Kwon
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Yong Sook Kim
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Ae Shin Cho
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hyang Hee Cho
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Jeong Sook Kim
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Moon Hwa Hong
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Hye-Yun Jeong
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea; Center of Molecular Medicine, Graduate School, Chonnam National University, Republic of Korea
| | - Wan Seok Kang
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea; Center of Molecular Medicine, Graduate School, Chonnam National University, Republic of Korea
| | - Kyung-Kuk Hwang
- Department of Cardiology, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Jang-Whan Bae
- Department of Cardiology, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea
| | - Myung Ho Jeong
- Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea
| | - Myeong-Chan Cho
- Department of Cardiology, College of Medicine, Chungbuk National University, Cheongju, Republic of Korea.
| | - Youngkeun Ahn
- Research Laboratory of Cardiovascular Regeneration, Chonnam National University Hospital, Gwangju, Republic of Korea; Department of Cardiology, Chonnam National University Hospital, Gwangju, Republic of Korea.
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Chen M, Cheung FW, Chan MH, Hui PK, Ip SP, Ling YH, Che CT, Liu WK. Protective roles of Cordyceps on lung fibrosis in cellular and rat models. JOURNAL OF ETHNOPHARMACOLOGY 2012; 143:448-454. [PMID: 22796203 PMCID: PMC7125542 DOI: 10.1016/j.jep.2012.06.033] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2011] [Revised: 06/11/2012] [Accepted: 06/19/2012] [Indexed: 06/01/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Cordyceps sinensis is a fungus used in traditional Chinese medicine as a tonic to soothe the lung for the treatment of fatigue and respiratory diseases. Idiopathic pulmonary fibrosis is a chronic, irreversible and debilitating lung disease showing fibroblast/myofibroblast expansion and excessive deposition of extracellular matrix in the interstitium leading to breathing difficulty. Our previous observation revealed a partial relief of lung fibrosis in patients suffering from severe acute respiratory syndrome (SARS). We hypothesize that Cordyceps has beneficial effects on lung fibrosis and the objective of this study is to explore the target(s) of Cordyceps in the relief of lung fibrosis in animal and cell models and to gain insight into its underlying mechanisms. MATERIAL AND METHODS A rat model of bleomycin (BLM)-induced lung fibrosis and a fibrotic cell model with transforming growth factor beta-1 induction were employed in the studies. RESULTS Reduction of infiltration of inflammatory cells, deposition of fibroblastic loci and collagen, formation of reactive oxygen species, and production of cytokines, as well as recovery from imbalance of MMP-9/TIMP-1, were observed in fibrotic rats after treatment with Cordyceps in preventive (from the day of BLM administration) and therapeutic (from 14 days after BLM) regimens. In a fibrotic cell model with transforming growth factor beta-1 induction, the human lung epithelial A549 acquired a mesenchymal phenotype and an increase of vimentin expression with a concomitant decrease of E-cadherin. This epithelial-mesenchymal transition could be partially reverted by cordycepin, a major component of Cordyceps. CONCLUSION The findings provide an insight into the preventive and therapeutic potentials of Cordyceps for the treatment of lung fibrosis.
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Key Words
- balf, bronchoalveolar lavage fluid
- blm, bleomycin
- ce, cordyceps powder extract in culture medium
- cs, cordyceps sinensis
- cs1, low-dose cs powder suspension treatment
- cs2, high-dose cs powder suspension treatment
- ecm, extracellular matrix
- emt, epithelial–mesenchymal transition
- ipf, idiopathic pulmonary fibrosis
- mmp, matrix metalloproteinases
- ros, reactive oxygen species
- tgf-β1, transforming growth factor beta-1
- timp, tissue inhibitors of metalloproteinases
- cordyceps sinensis
- cordycepin
- bleomycin-induced lung fibrosis
- traditional chinese medicine
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Affiliation(s)
- Mengli Chen
- School of Chinese Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
- Department of Clinical Pharmacology, General Hospital of PLA, Beijing, China
| | - Florence W.K. Cheung
- School of Chinese Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Ming Hung Chan
- Department of Medicine, Kwong Wah Hospital, The Tung Wah Group of Hospitals, Kowloon, Hong Kong
| | - Pak Kwan Hui
- Department of Pathology, Kwong Wah Hospital, The Tung Wah Group of Hospitals, Kowloon, Hong Kong
| | - Siu-Po Ip
- School of Chinese Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Yick Hin Ling
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Chun-Tao Che
- School of Chinese Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
- Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, Chicago, Illinois, IL 60612, USA
| | - Wing Keung Liu
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
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Soultati A, Mountzios G, Avgerinou C, Papaxoinis G, Pectasides D, Dimopoulos MA, Papadimitriou C. Endothelial vascular toxicity from chemotherapeutic agents: Preclinical evidence and clinical implications. Cancer Treat Rev 2012; 38:473-83. [DOI: 10.1016/j.ctrv.2011.09.002] [Citation(s) in RCA: 144] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Revised: 09/11/2011] [Accepted: 09/12/2011] [Indexed: 01/13/2023]
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Modulation of fibrosis in systemic sclerosis by nitric oxide and antioxidants. Cardiol Res Pract 2011; 2012:521958. [PMID: 22111028 PMCID: PMC3206384 DOI: 10.1155/2012/521958] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Accepted: 09/11/2011] [Indexed: 01/28/2023] Open
Abstract
Systemic sclerosis (scleroderma: SSc) is a multisystem, connective tissue disease of unknown aetiology characterized by vascular dysfunction, autoimmunity, and enhanced fibroblast activity resulting in fibrosis of the skin, heart, and lungs, and ultimately internal organ failure, and death. One of the most important and early modulators of disease activity is thought to be oxidative stress. Evidence suggests that the free radical nitric oxide (NO), a key mediator of oxidative stress, can profoundly influence the early microvasculopathy, and possibly the ensuing fibrogenic response. Animal models and human studies have also identified dietary antioxidants, such as epigallocatechin-3-gallate (EGCG), to function as a protective system against oxidative stress and fibrosis. Hence, targeting EGCG may prove a possible candidate for therapeutic treatment aimed at reducing both oxidant stress and the fibrotic effects associated with SSc.
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Liu CP, Yeh JL, Wu BN, Chai CY, Chen IJ, Lai WT. KMUP-3 attenuates ventricular remodelling after myocardial infarction through eNOS enhancement and restoration of MMP-9/TIMP-1 balance. Br J Pharmacol 2011; 162:126-35. [PMID: 20840538 DOI: 10.1111/j.1476-5381.2010.01024.x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
BACKGROUND AND PURPOSE Previously, 7-[2-[4-(4-nitrobenzene)piperazinyl]ethyl]-1, 3-dimethylxanthine (KMUP-3) has been shown to induce aortic smooth muscle relaxation through K(ATP) channel opening and endothelial nitric oxide synthase (eNOS) enhancement. We further investigated whether KMUP-3 protects against myocardial remodelling after myocardial infarction (MI), and whether KMUP-3 increases the expression of eNOS in MI rats. EXPERIMENTAL APPROACH Wistar rats were randomly allocated into three groups: MI (n= 10), MI + KMUP-3 group (n= 10) and sham group (n= 10). MI was induced by ligation of the left anterior descending coronary artery. After recovery, the MI + KMUP-3 group received KMUP-3 (0.3 mg·kg(-1) ·day(-1) ) infusion for 4 weeks, while the MI and sham group received vehicle only. To further confirm that the effect of KMUP-3 is dependent on eNOS, KMUP-3 was applied in the culture of transforming growth factor-β-stimulated human cardiac fibroblasts. KEY RESULTS KMUP-3 treatment attenuated cardiac hypertrophy post-MI and improved cardiac function. The fibrotic area was reduced by KMUP-3 both in central-, peri- and non-infarction areas. KMUP-3 enhanced the expression of eNOS and tissue inhibitor of metalloproteinase-1 (TIMP-1), but reduced matrix metalloproteinase-9 (MMP-9) expression. In vitro, the activities of KMUP-3 were blocked by pretreatment with the eNOS inhibitor N(ω) -nitro-L-arginine methyl ester. CONCLUSIONS AND IMPLICATIONS The K(ATP) channel opener KMUP-3 preserved cardiac function after MI by enhancing the expression of eNOS. In addition, KMUP-3 restored the myocardial MMP-9/TIMP-1 balance and attenuated ventricular remodelling by an eNOS-dependent mechanism.
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Affiliation(s)
- Chung-Pin Liu
- Depart of Internal Medicine, Yuan's General hospital, Kaohsiung, Taiwan
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Tourneux P, Markham N, Seedorf G, Balasubramaniam V, Abman SH. Inhaled nitric oxide improves lung structure and pulmonary hypertension in a model of bleomycin-induced bronchopulmonary dysplasia in neonatal rats. Am J Physiol Lung Cell Mol Physiol 2009; 297:L1103-11. [DOI: 10.1152/ajplung.00293.2009] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Whether inhaled nitric oxide (iNO) prevents the development of bronchopulmonary dysplasia (BPD) in premature infants is controversial. In adult rats, bleomycin (Bleo) induces lung fibrosis and pulmonary hypertension, but the effects of Bleo on the developing lung and iNO treatment on Bleo-induced neonatal lung injury are uncertain. Therefore, we sought to determine whether early and prolonged iNO therapy attenuates changes of pulmonary vascular and alveolar structure in a model of BPD induced by Bleo treatment of neonatal rats. Sprague-Dawley rat pups were treated with Bleo (1 mg/kg ip daily) or vehicle (controls) from day 2 to 10, followed by recovery from day 11 to 19. Treatment groups received early ( days 2–10), late ( days 11–19), or prolonged iNO therapy (10 ppm; days 2–19). We found that compared with controls, Bleo increased right ventricular hypertrophy (RVH), and pulmonary arterial wall thickness, and reduced vessel density alveolarization. In each iNO treatment group, iNO decreased RVH ( P < 0.01) and wall thickness ( P < 0.01) and restored vessel density after Bleo ( P < 0.05). iNO therapy improved alveolarization for each treatment group after Bleo; however, the values remained abnormal compared with controls. Prolonged iNO treatment had greater effects on lung structure after bleomycin than late treatment alone. We conclude that Bleo induces lung structural changes that mimic BPD in neonatal rats, and that early and prolonged iNO therapy prevents right ventricle hypertrophy and pulmonary vascular remodeling and partially improves lung structure.
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Affiliation(s)
- Pierre Tourneux
- Pediatric Heart Lung Center, Sections of Neonatology and Pulmonary Medicine, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado; and
- Neonatal and Pediatric Intensive Care Unit, Amiens University Medical Center, and PériTox, Faculty of Medicine, Jules Verne University of Picardy, Amiens, France
| | - Neil Markham
- Pediatric Heart Lung Center, Sections of Neonatology and Pulmonary Medicine, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado; and
| | - Gregory Seedorf
- Pediatric Heart Lung Center, Sections of Neonatology and Pulmonary Medicine, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado; and
| | - Vivek Balasubramaniam
- Pediatric Heart Lung Center, Sections of Neonatology and Pulmonary Medicine, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado; and
| | - Steven H. Abman
- Pediatric Heart Lung Center, Sections of Neonatology and Pulmonary Medicine, Department of Pediatrics, University of Colorado School of Medicine, Aurora, Colorado; and
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Gupte VV, Ramasamy SK, Reddy R, Lee J, Weinreb PH, Violette SM, Guenther A, Warburton D, Driscoll B, Minoo P, Bellusci S. Overexpression of fibroblast growth factor-10 during both inflammatory and fibrotic phases attenuates bleomycin-induced pulmonary fibrosis in mice. Am J Respir Crit Care Med 2009; 180:424-36. [PMID: 19498056 DOI: 10.1164/rccm.200811-1794oc] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Fibroblast growth factor-10 (FGF10) controls survival, proliferation, and differentiation of distal-alveolar epithelial progenitor cells during lung development. OBJECTIVES To test for the protective and regenerative effect of Fgf10 overexpression in a bleomycin-induced mouse model of pulmonary inflammation and fibrosis. METHODS In SP-C-rtTA; tet(O)Fgf10 double-transgenic mice, lung fibrosis was induced in 2-month-old transgenic mice by subcutaneous delivery of bleomycin (BLM), using an osmotic minipump for 1 week. Exogenous Fgf10 expression in the alveolar epithelium was induced for 7 days with doxycycline during the first, second, and third weeks after bleomycin pump implantation, and lungs were examined at 28 days. MEASUREMENTS AND MAIN RESULTS Fgf10 overexpression during Week 1 (inflammatory phase) resulted in increased survival and attenuated lung fibrosis score and collagen deposition. In these Fgf10-overexpressing mice, an increase in regulatory T cells and a reduction in both transforming growth factor-beta(1) and matrix metalloproteinase-2 activity were observed in bronchoalveolar lavage fluids whereas the number of surfactant protein C (SP-C)-positive, alveolar epithelial type II cells (AEC2) was markedly elevated. Analysis of SP-C and TUNEL (terminal deoxynucleotidyltransferase dUTP nick end labeling) double-positive cells and isolation of AEC2 from lungs overexpressing Fgf10 demonstrated increased AEC2 survival. Expression of Fgf10 during Weeks 2 and 3 (fibrotic phase) showed significant attenuation of the lung fibrosis score and collagen deposition. CONCLUSIONS In the bleomycin model of lung inflammation and fibrosis, Fgf10 overexpression during both the inflammatory and fibrotic phases results in a greatly reduced extent of lung fibrosis, suggesting that FGF10 may be useful as a novel approach to the treatment of pulmonary fibrosis.
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Affiliation(s)
- Varsha V Gupte
- Division of Surgery, Saban Research Institute of Children's Hospital Los Angeles, University of Southern California, Keck School of Medicine, Los Angeles, CA 90027, USA
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Kuramoto E, Nishiuma T, Kobayashi K, Yamamoto M, Kono Y, Funada Y, Kotani Y, Sisson TH, Simon RH, Nishimura Y. Inhalation of urokinase-type plasminogen activator reduces airway remodeling in a murine asthma model. Am J Physiol Lung Cell Mol Physiol 2008; 296:L337-46. [PMID: 19098125 DOI: 10.1152/ajplung.90434.2008] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The airway remodeling that occurs in asthma is characterized by an excess of extracellular matrix deposition in the submucosa, hyperplasia/hypertrophy of smooth muscle, goblet cell metaplasia, and accumulation of fibroblasts/myofibroblasts. The urokinase-type plasminogen activator (uPA)/plasmin system participates in pericellular proteolysis and is capable of directly degrading matrix components, activating latent proteinases, and activating growth factors. In a mouse ovalbumin (OVA) asthma model, we increased plasminogen activator activity in the lung by administering exogenous uPA or by using mice genetically deficient in the uPA inhibitor plasminogen activator inhibitor-1 (PAI-1) to assess the role of this system in asthma pathogenesis. After intraperitoneal OVA sensitization, mice inhaled OVA plus uPA (500 IU/mouse) or saline by ultrasonic nebulization for 3 wk. When studied 24 h after the final exposure, the groups with upregulated plasmin activity had significantly reduced subepithelial fibrosis within the airway walls and had decreased airway hyperresponsiveness (AHR) to methacholine. Morphometric analysis showed that subepithelial wall thickening of the bronchi (subepithelial area ratio) was also reduced, as were collagen and alpha-smooth muscle actin. Upregulation of plasmin activity also increased the level of hepatocyte growth factor activity in bronchoalveolar lavage fluid, whereas the release of transforming growth factor-beta was decreased. The administration of uPA 1 wk after the last OVA inhalation also significantly reduced lung hydroxyproline content and AHR. These results show that enhancing uPA/plasmin activity lessens the airway remodeling in a murine asthma model.
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Affiliation(s)
- Emi Kuramoto
- Division of Respiratory Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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Yamamoto M, Nishiuma T, Kobayashi K, Maniwa Y, Sakashita A, Funada Y, Kotani Y, Nishimura Y. Rad9 is upregulated and plays protective roles in an acute lung injury model. Biochem Biophys Res Commun 2008; 376:590-4. [DOI: 10.1016/j.bbrc.2008.09.058] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2008] [Accepted: 09/10/2008] [Indexed: 11/16/2022]
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Standardized quantification of pulmonary fibrosis in histological samples. Biotechniques 2008; 44:507-11, 514-7. [PMID: 18476815 DOI: 10.2144/000112729] [Citation(s) in RCA: 469] [Impact Index Per Article: 29.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The Ashcroft scale for the evaluation of bleomycin-induced lung fibrosis is the analysis of stained histological samples by visual assessment. Based on the knowledge that this procedure is not standardized in animals and results are highly variable, we hypothesized that modification of this method may improve quantification of lung fibrosis in small animals. To prove our hypothesis, we evaluated pulmonary fibrosis in Lewis rats induced by a single intratracheal injection of 0.3 mg/kg body weight bleomycin (n = 13) compared with the same amount of saline in a control group (n = 4). We modified the Ashcroft scale by precisely defining the assignment of grades from 0 to 8 for the increasing extent of fibrosis in lung histological samples. Thirty-two observers were randomly assigned to evaluate 108 photographs of slides using either the Ashcroft scale or the modified scale. Consistent with our hypothesis, there was a significant reduction in the variability of standard deviations with the modified scale compared with the Ashcroft scale (mean of variability 0.25 versus 0.62, P < 0.0001). Applying the kappa index, the Ashcroft scale showed only a fair to moderate agreement (0.23-0.59) between the observers and a low intra-observer agreement (0.51-0.74) in contrast to the modified scale, which demonstrated a moderate to good agreement between the observers (0.65-0.93, P < 0.0001) and a high intra-observer agreement (0.87-0.91, P < 0.05). To test the modified scale in vivo, we compared both scales with the results of computed tomography (CT) of the lungs obtained from the same mice. In agreement, the modified scale demonstrated a better correlation to CT scans (R = 0.58) compared with the Ashcroft scale (R = 0.33). In summary, quantification of lung fibrosis in histological lung sections using the modified scale is reliable and reproducible.
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Abstract
PURPOSE OF REVIEW Since pulmonary edema from increased endothelial permeability is the hallmark of acute lung injury, a frequently encountered entity in critical care medicine, the study of endothelial responses in this setting is crucial to the development of effective endothelial-targeted treatments. RECENT FINDINGS From the enormous amount of research in the field of endothelial pathophysiology, we have focused on work delineating endothelial alterations elicited by noxious stimuli implicated in acute lung injury. The bulk of the material covered deals with molecular and cellular aspects of the pathogenesis, reflecting current trends in the published literature. We initially discuss pathways of endothelial dysfunction in acute lung injury and then cover the mechanisms of endothelial protection. Several experimental treatments in animal models are presented, which aid in the understanding of the disease pathogenesis and provide evidence for potentially useful therapies. SUMMARY Mechanistic studies have delivered several interventions, which are effective in preventing and treating experimental acute lung injury and have thus provided objectives for translational studies. Some of these modalities may evolve into clinically useful tools in the treatment of this devastating illness.
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Gao F, Kinnula VL, Myllärniemi M, Oury TD. Extracellular superoxide dismutase in pulmonary fibrosis. Antioxid Redox Signal 2008; 10:343-54. [PMID: 17999630 PMCID: PMC2290736 DOI: 10.1089/ars.2007.1908] [Citation(s) in RCA: 87] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Disruption of the oxidant/antioxidant balance in the lung is thought to be a key step in the development of many airway pathologies. Hence, antioxidant enzymes play key roles in controlling or preventing pulmonary diseases related to oxidative stress. The superoxide dismutases (SOD) are a family of enzymes that play a pivotal role protecting tissues from damage by oxidant stress by scavenging superoxide anion, which prevents the formation of other more potent oxidants such as peroxynitrite and hydroxyl radical. Extracellular SOD (EC-SOD) is found predominantly in the extracellular matrix of tissues and is ideally situated to prevent cell and tissue damage initiated by extracellularly produced ROS. EC-SOD has been shown to be protective in several models of interstitial lung disease, including pulmonary fibrosis. In addition, alterations in EC-SOD expression are also present in human idiopathic pulmonary fibrosis (IPF). This review discusses EC-SOD regulation in response to pulmonary fibrosis in animals and humans and reviews possible mechanisms by which EC-SOD may protect against fibrosis.
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Affiliation(s)
- Fei Gao
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania 15261, USA.
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Vyas-Read S, Shaul PW, Yuhanna IS, Willis BC. Nitric oxide attenuates epithelial-mesenchymal transition in alveolar epithelial cells. Am J Physiol Lung Cell Mol Physiol 2007; 293:L212-21. [PMID: 17496059 DOI: 10.1152/ajplung.00475.2006] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Patients with interstitial lung diseases, such as idiopathic pulmonary fibrosis (IPF) and bronchopulmonary dysplasia (BPD), suffer from lung fibrosis secondary to myofibroblast-mediated excessive ECM deposition and destruction of lung architecture. Transforming growth factor (TGF)-β1 induces epithelial-mesenchymal transition (EMT) of alveolar epithelial cells (AEC) to myofibroblasts both in vitro and in vivo. Inhaled nitric oxide (NO) attenuates ECM accumulation, enhances lung growth, and decreases alveolar myofibroblast number in experimental models. We therefore hypothesized that NO attenuates TGF-β1-induced EMT in cultured AEC. Studies of the capacity for endogenous NO production in AEC revealed that endothelial nitric oxide synthase (eNOS) and inducible nitric oxide synthase (iNOS) are expressed and active in AEC. Total NOS activity was 1.3 pmol·mg protein−1·min−1 with 67% derived from eNOS. TGF-β1 (50 pM) suppressed eNOS expression by more than 60% and activity by 83% but did not affect iNOS expression or activity. Inhibition of endogenous NOS with l-NAME led to spontaneous EMT, manifested by increased α-smooth muscle actin (α-SMA) expression and a fibroblast-like morphology. Provision of exogenous NO to TGF-β1-treated AEC decreased stress fiber-associated α-SMA expression and decreased collagen I expression by 80%. NO-treated AEC also retained an epithelial morphology and expressed increased lamellar protein, E-cadherin, and pro-surfactant protein B compared with those treated with TGF-β alone. These findings indicate that NO serves a critical role in preserving an epithelial phenotype and in attenuating EMT in AEC. NO-mediated regulation of AEC fate may have important implications in the pathophysiology and treatment of diseases such as IPF and BPD.
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Affiliation(s)
- Shilpa Vyas-Read
- Division of Neonatal-Perinatal Medicine, Department of Pediatrics, University of Texas Southwestern Medical Center, Dallas, Texas 75390-9063, USA
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Thompson PJ, Chung F. Respirology year-in-review 2006: Basic science. Respirology 2007; 12:184-90. [PMID: 17298449 DOI: 10.1111/j.1440-1843.2007.01045.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The year 2006 was a good year for basic science publications in Respirology with a lot of the studies being relevant to clinical practice. In this respect many of the publications focused on biomarkers of disease and so much so that these have been discussed at the end of this review. The majority of manuscripts are related to airway diseases, respiratory infections, interstitial lung diseases and lung cancers, and are discussed under these headings.
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Affiliation(s)
- Philip J Thompson
- Lung Institute of Western Australia, Centre for Asthma, Allergy & Respiratory Research, University of Western Australia, Perth, Western Australia, Australia.
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