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Xu Y, Bu H, Jiang Y, Zhuo X, Hu K, Si Z, Chen Y, Liu Q, Gong X, Sun H, Zhu Q, Cui L, Ma X, Cui Y. N‑acetyl cysteine prevents ambient fine particulate matter‑potentiated atherosclerosis via inhibition of reactive oxygen species‑induced oxidized low density lipoprotein elevation and decreased circulating endothelial progenitor cell. Mol Med Rep 2022; 26:236. [PMID: 35621139 PMCID: PMC9185698 DOI: 10.3892/mmr.2022.12752] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 05/09/2022] [Indexed: 11/06/2022] Open
Abstract
Ambient fine particulate matter (PM) serves an important role in the development of cardiovascular disease, including atherosclerosis. Antioxidant N‑acetyl cysteine (NAC) has protective effects in the cardiovascular system. However, it is unknown if NAC prevents PM‑potentiated atherosclerosis in hyperlipidemia. Low‑density lipoprotein (LDL) receptor knockout mice were pretreated with 1 mg/ml NAC in drinking water for 1 week and continued to receive NAC, high‑fat diet and intranasal instillation of PM for 1 week or 6 months. Blood plasma was collected for lipid profile, oxidized (ox‑)LDL, blood reactive oxygen species (ROS) and inflammatory cytokine (TNF‑α, IL‑1β and IL‑6) measurement. Blood cells were harvested for endothelial progenitor cell (EPC) population and intracellular ROS analysis. Murine aorta was isolated for atherosclerotic plaque ratio calculation. NAC treatment maintained circulating EPC level and significantly decreased blood ox‑LDL and ROS, inflammatory cytokines, mononuclear and EPC intracellular ROS levels as well as aortic plaque ratio. NAC prevented PM‑potentiated atherosclerosis by inhibiting plasma ROS‑induced ox‑LDL elevation, mononuclear cell and EPC intracellular ROS‑induced circulating EPC reduction and inflammatory cytokine production.
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Affiliation(s)
- Yixin Xu
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Haoran Bu
- Department of Cardiology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Yufan Jiang
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Xiaoqing Zhuo
- Department of Cardiology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Ke Hu
- Department of Emergency, Qianfoshan Hospital, Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Zhihua Si
- Department of Emergency, Qianfoshan Hospital, Shandong First Medical University, Jinan, Shandong 250014, P.R. China
| | - Yong Chen
- Department of Cardiology, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250021, P.R. China
| | - Qiwei Liu
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Xianwei Gong
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Haihui Sun
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Qingyi Zhu
- Department of Cardiovascular Medicine, Second Xiangya Hospital, Central South University, Changsha, Hunan 410008, P.R. China
| | - Lianqun Cui
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Xiaochun Ma
- Department of Cardiovascular Surgery, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
| | - Yuqi Cui
- Department of Cardiology, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong 250021, P.R. China
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Molecular Correlates of Venous Thromboembolism (VTE) in Ovarian Cancer. Cancers (Basel) 2022; 14:cancers14061496. [PMID: 35326647 PMCID: PMC8946269 DOI: 10.3390/cancers14061496] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/08/2022] [Accepted: 03/11/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The incidence of venous thromboembolism (VTE) in patients with ovarian cancer is higher than most solid tumors, ranging between 10-30%, and a diagnosis of VTE in this patient population is associated with worse oncologic outcomes. The tumor-specific molecular factors that may lead to the development of VTE are not well understood. OBJECTIVES The aim of this study was to identify molecular features present in ovarian tumors of patients with VTE compared to those without. METHODS We performed a multiplatform omics analysis incorporating RNA and DNA sequencing, quantitative proteomics, as well as immune cell profiling of high-grade serous ovarian carcinoma (HGSC) samples from a cohort of 32 patients with or without VTE. RESULTS Pathway analyses revealed upregulation of both inflammatory and coagulation pathways in the VTE group. While DNA whole-exome sequencing failed to identify significant coding alterations between the groups, the results of an integrated proteomic and RNA sequencing analysis indicated that there is a relationship between VTE and the expression of platelet-derived growth factor subunit B (PDGFB) and extracellular proteins in tumor cells, namely collagens, that are correlated with the formation of thrombosis. CONCLUSIONS In this comprehensive analysis of HGSC tumor tissues from patients with and without VTE, we identified markers unique to the VTE group that could contribute to development of thrombosis. Our findings provide additional insights into the molecular alterations underlying the development of VTE in ovarian cancer patients and invite further investigation into potential predictive biomarkers of VTE in ovarian cancer.
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Viswanadha VP, Dhivya V, Beeraka NM, Huang CY, Gavryushova LV, Minyaeva NN, Chubarev VN, Mikhaleva LM, Tarasov VV, Aliev G. The protective effect of piperine against isoproterenol-induced inflammation in experimental models of myocardial toxicity. Eur J Pharmacol 2020; 885:173524. [PMID: 32882215 DOI: 10.1016/j.ejphar.2020.173524] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 08/24/2020] [Accepted: 08/28/2020] [Indexed: 12/19/2022]
Abstract
Myocardial infarction (MI) eventually exacerbates inflammatory response due to the release of inflammatory and pro-inflammatory factors. The aim of this study is to explore the protective efficacy of piperine supplementation against the inflammatory response in isoproterenol (ISO)-induced MI. Masson Trichome staining was executed to determine myocardial tissue architecture. Immunohistochemistry was performed for IL-6, TNF-α. RT-PCR studies were performed to ascertain the gene expression of IL-6, TNF-α, iNOS, eNOS, MMP-2, MMP-9, and collagen-III. Western blotting was performed to determine expression of HIF-1α, VEGF, Nrf-2, NF-ƙB, Cox-2, p-38, phospho-p38, ERK-1/2, phospho-ERK-1/2, and collagen-I. HIF-1α, VEGF, and iNOS expression were significantly upregulated with concomitant decline in eNOS expression in the heart myocardial tissue of rats received ISO alone whereas piperine pretreatment prevented these changes in ISO administered rats. Current results revealed ROS-mediated activation of MAPKs, namely, p-p38, p-ERK1/2 in the heart tissue of ISO administered group. Piperine pretreatment significantly prevented these changes in ISO treated group. NF-κB is involved in the modulation of gene expressions responsible for tissue repair. ISO-induced NF-κB-p65 expression was significantly reduced in the group pretreated with piperine and mitigated extent of myocardial inflammation. A significant increase in cardiac fibrosis upon ISO treatment was reported due to the increased hydroxyproline content, MMP-2 & 9 and upregulation of collagen-I protein compared to control group. All these cardiac hypertrophy markers were decreased in 'piperine pretreated ISO administered group' compared to group received ISO injection. Current findings concluded that piperine as a nutritional intervention could prevent inflammation of myocardium in ISO-induced MI.
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Affiliation(s)
- Vijaya Padma Viswanadha
- Translational Research Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India; China Medical University, Lifu Teaching Building 12F, 91 Hsueh-Shih Road, Taichung, 40402, Taiwan.
| | - Velumani Dhivya
- Translational Research Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Narasimha Murthy Beeraka
- Translational Research Laboratory, Department of Biotechnology, Bharathiar University, Coimbatore, Tamil Nadu, India
| | - Chih-Yang Huang
- China Medical University, Lifu Teaching Building 12F, 91 Hsueh-Shih Road, Taichung, 40402, Taiwan
| | - Liliya V Gavryushova
- Department of Therapeutic Dentistry, Saratov State Medical University named after V.I. Razumovsky, 410012, Saratov, Russia
| | - Nina N Minyaeva
- National Research University Higher School of Economics, 20 Myasnitskaya Street, Moscow, 101000, Russia
| | - Vladimir N Chubarev
- Sechenov First Moscow State Medical University (Sechenov University), St. Trubetskaya, 8, bld. 2, Moscow, 119991, Russia
| | - Liudmila M Mikhaleva
- Research Institute of Human Morphology, Russian Academy of Medical Science, Street Tsyurupa 3, Moscow, 117418, Russia
| | - Vadim V Tarasov
- Sechenov First Moscow State Medical University (Sechenov University), St. Trubetskaya, 8, bld. 2, Moscow, 119991, Russia
| | - Gjumrakch Aliev
- Sechenov First Moscow State Medical University (Sechenov University), St. Trubetskaya, 8, bld. 2, Moscow, 119991, Russia; Research Institute of Human Morphology, Russian Academy of Medical Science, Street Tsyurupa 3, Moscow, 117418, Russia; Institute of Physiologically Active Compounds, Russian Academy of Sciences, Chernogolovka, Moscow Region, 142432, Russia; GALLY International Research Institute, 7733 Louis Pasteur Drive, #330, San Antonio, TX, 78229, USA.
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Gutmann C, Siow R, Gwozdz AM, Saha P, Smith A. Reactive Oxygen Species in Venous Thrombosis. Int J Mol Sci 2020; 21:E1918. [PMID: 32168908 PMCID: PMC7139897 DOI: 10.3390/ijms21061918] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 01/03/2023] Open
Abstract
Reactive oxygen species (ROS) have physiological roles as second messengers, but can also exert detrimental modifications on DNA, proteins and lipids if resulting from enhanced generation or reduced antioxidant defense (oxidative stress). Venous thrombus (DVT) formation and resolution are influenced by ROS through modulation of the coagulation, fibrinolysis, proteolysis and the complement system, as well as the regulation of effector cells such as platelets, endothelial cells, erythrocytes, neutrophils, mast cells, monocytes and fibroblasts. Many conditions that carry an elevated risk of venous thrombosis, such as the Antiphospholipid Syndrome, have alterations in their redox homeostasis. Dietary and pharmacological antioxidants can modulate several important processes involved in DVT formation, but their overall effect is unknown and there are no recommendations regarding their use. The development of novel antioxidant treatments that aim to abrogate the formation of DVT or promote its resolution will depend on the identification of targets that enable ROS modulation confined to their site of interest in order to prevent off-target effects on physiological redox mechanisms. Subgroups of patients with increased systemic oxidative stress might benefit from unspecific antioxidant treatment, but more clinical studies are needed to bring clarity to this issue.
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Affiliation(s)
- Clemens Gutmann
- King’s British Heart Foundation Centre, King’s College London, 125 Coldharbour Lane, London SE5 9NU, UK;
| | - Richard Siow
- Vascular Biology & Inflammation Section, School of Cardiovascular Medicine & Sciences, British Heart Foundation of Research Excellence, King’s College London, SE1 9NH, UK;
| | - Adam M. Gwozdz
- Academic Department of Surgery, School of Cardiovascular Medicine & Sciences, British Heart Foundation of Research Excellence, King’s College London, London SE1 7EH, UK; (A.M.G.); (P.S.)
| | - Prakash Saha
- Academic Department of Surgery, School of Cardiovascular Medicine & Sciences, British Heart Foundation of Research Excellence, King’s College London, London SE1 7EH, UK; (A.M.G.); (P.S.)
| | - Alberto Smith
- Academic Department of Surgery, School of Cardiovascular Medicine & Sciences, British Heart Foundation of Research Excellence, King’s College London, London SE1 7EH, UK; (A.M.G.); (P.S.)
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Amparo TR, Seibert JB, Mathias FAS, Vieira JFP, Soares RDDOA, Freitas KM, Cabral VAR, Brandão GC, Santos ODHD, de Souza GHB, Vieira PMDA. Anti-inflammatory activity of Protium spruceanum (Benth.) Engler is associated to immunomodulation and enzymes inhibition. JOURNAL OF ETHNOPHARMACOLOGY 2019; 241:112024. [PMID: 31181316 DOI: 10.1016/j.jep.2019.112024] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 06/04/2019] [Accepted: 06/06/2019] [Indexed: 06/09/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Protium spruceanum (Burseraceae) is used in Brazilian traditional medicine as anti-inflammatory, but the factors involved in this activity were not yet characterized. AIMS OF THE STUDY analyze the aspects involved in the anti-inflammatory activity of polar fractions obtained from extracts of leaves and branches. MATERIALS AND METHODS Hydromethanolic fraction was obtained by liquid-liquid partition from crude ethanolic extract and its compounds were identified by LC-DAD-MS. Activity tests were performed using LPS + IFN-γ stimulated J774A.1 macrophages. Cytokines were evaluated by CBA kit, NO by Griess method, ROS by DCFH-DA, N-acetylglucosaminidase (NAG) activity by spectrophotometric method, matrix-metalloproteinase (MMP-9) activity by zymography, inducible nitric oxide synthase (iNOS) expression by immunofluorescence and cyclooxygenase (COX-2) expression by Western blot. RESULTS Fractions induced an increase of IL-6 and IL-10 which leads to the control of pro-inflammatory cytokines levels. The treatment with the fractions also reduced NO production at all concentrations tested in all evaluated periods. ROS production by the macrophages was inhibited by the treatment and the leaves fraction showed the best results with a lower concentration than that observed for the branches. The enzymes assays showed that leaves fraction inhibited NAG and MMP-9 activities, as well as, iNOS and COX-2 expression. These activities can be associated with the presence of procyanidin, catechin, rutin, quercitrin, isoquercitrin and kaempferol-3-O-rhamnoside, major compounds that were identified in the fraction. CONCLUSIONS Anti-inflammatory activity of P. spruceanum is associated to an immunomodulatory effect that leads to inhibition of ROS, NO, NAG, MMP-9, COX-2 and iNOS.
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Affiliation(s)
- Tatiane Roquete Amparo
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Janaína Brandão Seibert
- Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Fernando Augusto Siqueira Mathias
- Programa de Pós Graduação em Ciências Biológicas, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - João Filipe Pereira Vieira
- Programa de Pós Graduação em Ciências Biológicas, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Rodrigo Dian de Oliveira Aguiar Soares
- Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Kátia Michelle Freitas
- Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | | | - Geraldo Célio Brandão
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Orlando David Henrique Dos Santos
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil; Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Gustavo Henrique Bianco de Souza
- Programa de Pós Graduação em Ciências Farmacêuticas, Escola de Farmácia, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil; Programa de Pós Graduação em Biotecnologia, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil
| | - Paula Melo de Abreu Vieira
- Programa de Pós Graduação em Ciências Biológicas, Núcleo de Pesquisa em Ciências Biológicas, Universidade Federal de Ouro Preto, Campus Morro do Cruzeiro, Ouro Preto, 35400-000, Minas Gerais, Brazil.
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Gargiulo S, Rossin D, Testa G, Gamba P, Staurenghi E, Biasi F, Poli G, Leonarduzzi G. Up-regulation of COX-2 and mPGES-1 by 27-hydroxycholesterol and 4-hydroxynonenal: A crucial role in atherosclerotic plaque instability. Free Radic Biol Med 2018; 129:354-363. [PMID: 30312760 DOI: 10.1016/j.freeradbiomed.2018.09.046] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Revised: 09/26/2018] [Accepted: 09/29/2018] [Indexed: 12/12/2022]
Abstract
Atherosclerosis is currently understood to be mainly the consequence of a complicated inflammatory process at the different stages of plaque development. Among the several inflammatory molecules involved, up-regulation of the functional cyclooxygenase 2/membrane-bound prostaglandin E synthase 1 (COX-2/mPGES-1) axis plays a key role in plaque development. Excessive production of oxidized lipids, following low-density lipoprotein (LDL) oxidation, is a characteristic feature of atherosclerosis. Among the oxidized lipids of LDLs, the oxysterol 27-hydroxycholesterol (27-OH) and the aldehyde 4-hydroxynonenal (HNE) substantially accumulate in the atherosclerotic plaque, contributing to its progression and instability through a variety of processes. This study shows that 27-OH and HNE promote up-regulation of both the inducible enzymes COX-2 and mPGES-1, leading to increased production of prostaglandin (PG) E2 and inducible nitric oxide synthase, and the subsequent release of nitric oxide in human promonocytic U937 cells. The study also examined the potential involvement of the functionally coupled COX-2/mPGES-1 in enhancing the production of certain pro-inflammatory cytokines and of matrix metalloproteinase 9 by U937 cells. This enhancement is presumably due to the induction of PGE2 synthesis, as a result of the up-regulation of the COX-2/mPGES-1, stimulated by the two oxidized lipids, 27-OH and HNE. Induction of PGE2 synthesis might thus be a mechanism of plaque instability and eventual rupture, contributing to matrix metalloproteinase production by activated macrophages.
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Affiliation(s)
- Simona Gargiulo
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy
| | - Daniela Rossin
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy
| | - Gabriella Testa
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy
| | - Paola Gamba
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy
| | - Erica Staurenghi
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy
| | - Fiorella Biasi
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy
| | - Giuseppe Poli
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy
| | - Gabriella Leonarduzzi
- Department of Clinical and Biological Sciences, School of Medicine, University of Turin, Orbassano, Torino, Italy.
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Prinz N, Clemens N, Canisius A, Lackner K. Endosomal NADPH-oxidase is critical for induction of the tissue factor gene in monocytes and endothelial cells. Thromb Haemost 2017; 109:525-31. [DOI: 10.1160/th12-06-0421] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2012] [Accepted: 12/05/2012] [Indexed: 11/05/2022]
Abstract
SummaryAntiphospholipid antibodies (aPL) have been shown to induce tissue factor (TF) expression in monocytes and endothelial cells. However, the underlying signal transduction has been more or less elusive in the past. We have recently shown that aPL enter the lysosomal route in monocytes and dendritic cells, and subsequently activate endosomal NADPH-oxidase (NOX). The generation of superoxide which is dismutated to hydrogen peroxide upregulates the intracellular toll like receptors (TLR) 7 and 8, and leads to robust production of inflammatory cytokines. Here we show that induction of TF by aPL follows the same signaling pathway. Inhibition of endosomal NOX by the anion channel blocker niflumic acid or capture of superoxide by the radical scavenger N-acetylcysteine blocks TF induction by aPL. Furthermore, monocytes from mice deficient in NOX2 do not increase TF surface expression in response to aPL, while cells from mice deficient in glutathione peroxidase- 1 (GPx-1) show an increased response. Unexpectedly, also induction of TF by tumour necrosis factor (TNF)⍺ and lipopolysaccharide (LPS) was strongly dependent on the activation of endosomal NOX. While TNF⍺ apparently depends almost fully on endosomal NOX, signalling of LPS is only partially dependent on this pathway. These data provide further insight into the well-known role of reactive oxygen species in the induction of TF expression and suggest that endosomal signalling may represent a central coordinating point in this process.
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Pageon H, Zucchi H, Rousset F, Girardeau-Hubert S, Tancrede E, Asselineau D. Glycation stimulates cutaneous monocyte differentiation in reconstructed skin in vitro. Mech Ageing Dev 2017; 162:18-26. [PMID: 28163107 DOI: 10.1016/j.mad.2017.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 11/07/2016] [Indexed: 12/12/2022]
Abstract
Glycation reaction is a recognized mechanism related to chronological aging. Previous investigations in cutaneous biology have considered the effect of glycation on the dermal matrix molecules, involved in tissue stiffening during skin aging. However, little is known about a possible direct effect of glycation upon cell differentiation. To address such issue, the effect of glycation has been re-investigated in a reconstructed skin model integrating monocytes that are cells capable of differentiating according to different pathways. The results showed that, in the absence of glycation, a small number of these CD45+ cells could differentiate either into dendritic-like cells (DC-SIGN+, BDC1a+, DC-LAMP+) or macrophage- like cells (CD14+, CD68+, CD163+) whereas, with glycation, the number of monocytes, dendritic cells, macrophage-like cells were found surprisingly increased. In-vivo our results showed also that dendritic and macrophage-like cells were increased and suggest a possible link with the age-dependent glycation level in the skin. In addition, we found that, unlike fibroblasts incorporated in the reconstructed skin, these cells expressed specific receptors for AGEs (RAGE and SRA). Taken altogether, our data show that cells of the monocyte lineage, in the presence of AGEs, can differentiate into dendritic or macrophage-like cells and could lead to a micro inflammatory environment.
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Affiliation(s)
- H Pageon
- L'Oréal Research & Innovation, 1 Avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France.
| | - H Zucchi
- L'Oréal Research & Innovation, 1 Avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
| | - F Rousset
- L'Oréal Research & Innovation, 1 Avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
| | - S Girardeau-Hubert
- L'Oréal Research & Innovation, 1 Avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
| | - E Tancrede
- L'Oréal Research & Innovation, 1 Avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
| | - D Asselineau
- L'Oréal Research & Innovation, 1 Avenue Eugène Schueller, 93600 Aulnay-sous-Bois, France
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Tournois C, Pignon B, Sevestre MA, Al-Rifai R, Creuza V, Poitevin G, François C, Nguyen P. Cell therapy in critical limb ischemia: A comprehensive analysis of two cell therapy products. Cytotherapy 2017; 19:299-310. [DOI: 10.1016/j.jcyt.2016.10.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 10/17/2016] [Accepted: 10/20/2016] [Indexed: 12/13/2022]
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10
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Tournois C, Pignon B, Sevestre MA, Djerada Z, Capiod JC, Poitevin G, Delloup AM, Nguyen P. Critical limb ischemia: thrombogenic evaluation of two autologous cell therapy products and biologic profile in treated patients. Transfusion 2015. [DOI: 10.1111/trf.13203] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Claire Tournois
- Laboratoire d'Hématologie; CHU Robert Debré; Reims
- EA-3801; SFR CAP-Santé; Université de Reims Champagne-Ardenne; Reims
| | | | | | - Zoubir Djerada
- EA-3801; SFR CAP-Santé; Université de Reims Champagne-Ardenne; Reims
| | | | - Gaël Poitevin
- EA-3801; SFR CAP-Santé; Université de Reims Champagne-Ardenne; Reims
| | | | - Philippe Nguyen
- Laboratoire d'Hématologie; CHU Robert Debré; Reims
- EA-3801; SFR CAP-Santé; Université de Reims Champagne-Ardenne; Reims
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Collagen inhibitory peptide R1R2 mediates vascular remodeling by decreasing inflammation and smooth muscle cell activation. PLoS One 2015; 10:e0117356. [PMID: 25675397 PMCID: PMC4326127 DOI: 10.1371/journal.pone.0117356] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Accepted: 12/22/2014] [Indexed: 11/30/2022] Open
Abstract
The extracellular matrix (ECM) is a major constituent of the vessel wall. In addition to providing a structural scaffold, the ECM controls numerous cellular functions in both physiologic and pathologic settings. Vascular remodeling occurs after injury and is characterized by endothelial cell activation, inflammatory cell infiltration, phenotypic modulation of smooth muscle cells (SMCs), and augmented deposition of collagen-rich ECM. R1R2, a peptide derived from the bacterial adhesin SFS, with sequence homology to collagen, is known to inhibit collagen type I deposition in vitro by inhibiting the binding of fibronectin to collagen. However, the inhibitory effects of R1R2 during vascular remodeling have not been explored. We periadventitially delivered R1R2 to carotid arteries using pluronic gel in a vascular remodeling mouse model induced by blood flow cessation, and evaluated its effects on intima-media thickening, ECM deposition, SMC activation, and inflammatory cell infiltration. Morphometric analysis demonstrated that R1R2 reduced intima-media thickening compared to the control groups. R1R2 treatment also decreased collagen type I deposition in the vessel wall, and maintained SMC in the contractile phenotype. Interestingly, R1R2 dramatically reduced inflammatory cell infiltration into the vessel by ∼78%. This decrease was accompanied by decreased VCAM-1 and ICAM-1 expression. Our in vitro studies revealed that R1R2 attenuated SMC proliferation and migration, and also decreased monocyte adhesion and transendothelial migration through endothelial cells. Together, these data suggest that R1R2 attenuates vascular remodeling responses by decreasing inflammation and by modulating SMC proliferation and migration, and suggest that the R1R2 peptide may have therapeutic potential in treating occlusive vascular diseases.
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Hielscher A, Gerecht S. Hypoxia and free radicals: role in tumor progression and the use of engineering-based platforms to address these relationships. Free Radic Biol Med 2015; 79:281-91. [PMID: 25257256 PMCID: PMC4339408 DOI: 10.1016/j.freeradbiomed.2014.09.015] [Citation(s) in RCA: 65] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2014] [Revised: 08/11/2014] [Accepted: 09/15/2014] [Indexed: 12/23/2022]
Abstract
Hypoxia is a feature of all solid tumors, contributing to tumor progression and therapy resistance. Through stabilization of the hypoxia-inducible factor 1 alpha (HIF-1α), hypoxia activates the transcription of a number of genes that sustain tumor progression. Since the seminal discovery of HIF-1α as a hypoxia-responsive master regulator of numerous genes and transcription factors, several groups have reported a novel mechanism whereby hypoxia mediates stabilization of HIF-1α. This process occurs as a result of hypoxia-generated reactive oxygen species (ROS), which, in turn, stabilize the expression of HIF-1α. As a result, a number of genes regulating tumor growth are expressed, fueling ongoing tumor progression. In this review, we outline a role for hypoxia in generating ROS and additionally define the mechanisms contributing to ROS-induced stabilization of HIF-1α.We further explore how ROS-induced HIF-1α stabilization contributes to tumor growth, angiogenesis, metastasis, and therapy response. We discuss a future outlook, describing novel therapeutic approaches for attenuating ROS production while considering how these strategies should be carefully selected when combining with chemotherapeutic agents. As engineering-based approaches have been more frequently utilized to address biological questions, we discuss opportunities whereby engineering techniques may be employed to better understand the physical and biochemical factors controlling ROS expression. It is anticipated that an improved understanding of the mechanisms responsible for the hypoxia/ROS/HIF-1α axis in tumor progression will yield the development of better targeted therapies.
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Affiliation(s)
- Abigail Hielscher
- Department of Biomedical Sciences, Georgia Philadelphia College of Osteopathic Medicine, Suwanee, GA 30024, USA; Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Johns Hopkins Physical Sciences-Oncology Center, Johns Hopkins University, Baltimore, MD 21218, USA; Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, USA.
| | - Sharon Gerecht
- Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD 21218, USA; Johns Hopkins Physical Sciences-Oncology Center, Johns Hopkins University, Baltimore, MD 21218, USA; Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD 21218, USA.
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Parthasarathy A, Gopi V, Devi KM S, Balaji N, Vellaichamy E. Aminoguanidine inhibits ventricular fibrosis and remodeling process in isoproterenol-induced hypertrophied rat hearts by suppressing ROS and MMPs. Life Sci 2014; 118:15-26. [DOI: 10.1016/j.lfs.2014.09.030] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Revised: 09/24/2014] [Accepted: 09/30/2014] [Indexed: 12/11/2022]
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Cannizzo B, Quesada I, Militello R, Amaya C, Miatello R, Cruzado M, Castro C. Tempol attenuates atherosclerosis associated with metabolic syndrome via decreased vascular inflammation and NADPH-2 oxidase expression. Free Radic Res 2014; 48:526-33. [PMID: 24490696 DOI: 10.3109/10715762.2014.889295] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Oxidative stress is an important factor in the generation of vascular injury in atherosclerosis. Chronic administration of fructose in rodents is able to facilitate oxidative damage. In the present study we evaluated the role of Tempol, a superoxide dismutase mimetic, on the effect of high fructose intake in apolipoprotein E-deficient (ApoE-KO) mice. Rodents were fed with fructose overload (FF, 10% w/v) for 8 weeks and treated with Tempol 1 mg/kg/day the latest 4 weeks. Tempol revert the pro-oxidant effects caused by FF, diminished lipid peroxidation and impaired vascular NADPH oxidase system through the downregulation of p47phox expression in the vascular wall. Tempol inhibited the expression of vascular adhesion molecule 1 (VCAM-1) in aorta and reduced the development of atheroma plaques. Our results indicate that tempol attenuates oxidative stress by interfering with the correct assembly of Nox2 oxidase complex in the vascular wall and is able to reduce atherosclerosis. Thus tempol represents a potential therapeutic target for preventing risk factors associated with metabolic syndrome.
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Affiliation(s)
- B Cannizzo
- Vascular Biology Lab, Institute of Medicine and Experimental Biology of Cuyo (IMBECU) CONICET, School of Medical Sciences, National University of Cuyo , Mendoza , Argentina
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15
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Parthasarathy A, Gopi V, Umadevi S, Simna A, Sheik MJY, Divya H, Vellaichamy E. Suppression of atrial natriuretic peptide/natriuretic peptide receptor-A-mediated signaling upregulates angiotensin-II-induced collagen synthesis in adult cardiac fibroblasts. Mol Cell Biochem 2013; 378:217-28. [DOI: 10.1007/s11010-013-1612-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2012] [Accepted: 03/02/2013] [Indexed: 12/15/2022]
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Scott JA, Xie L, Li H, Li W, He JB, Sanders PN, Carter AB, Backs J, Anderson ME, Grumbach IM. The multifunctional Ca2+/calmodulin-dependent kinase II regulates vascular smooth muscle migration through matrix metalloproteinase 9. Am J Physiol Heart Circ Physiol 2012; 302:H1953-64. [PMID: 22427508 DOI: 10.1152/ajpheart.00978.2011] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The multifunctional CaMKII has been implicated in vascular smooth muscle cell (VSMC) migration, but little is known regarding its downstream targets that mediate migration. Here, we examined whether CaMKII regulates migration through modulation of matrix metalloproteinase 9 (MMP9). Using CaMKIIδ(-/-) mice as a model system, we evaluated migration and MMP9 regulation in vitro and in vivo. After ligation of the common carotid artery, CaMKII was activated in the neointima as determined by oxidation and autophosphorylation. We found that MMP9 was robustly expressed in the neointima and adventitia of carotid-ligated wild-type (WT) mice but was barely detectable in CaMKIIδ(-/-) mice. The perimeter of the external elastic lamina, a correlate of migration-related outward remodeling, was increased in WT but not in CaMKIIδ(-/-) mice. Migration induced by serum, platelet-derived growth factor, and tumor necrosis factor-α (TNF-α) was significantly decreased in CaMKIIδ(-/-) as compared with WT VSMCs, but migration was rescued with adenoviral overexpression of MMP9 in CaMKIIδ(-/-) VSMCs. Likewise, overexpression of CaMKIIδ in CaMKIIδ(-/-) VSMCs increased migration, whereas an oxidation-resistant mutant of CaMKIIδ did not. TNF-α strongly induced CaMKII oxidation and autophosphorylation as well as MMP9 activity, mRNA, and protein levels in WT, but not in CaMKIIδ(-/-) VSMC. Surprisingly, TNF-α strongly induced MMP9 promoter activity in WT and CaMKIIδ(-/-) VSMC. However, the MMP9 mRNA stability was significantly decreased in CaMKIIδ(-/-) VSMC. Our data demonstrate that CaMKII promotes VSMC migration through posttranscriptional regulation of MMP9 and suggest that CaMKII effects on MMP9 expression may be a therapeutic pathway in vascular injury.
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Affiliation(s)
- Jason A Scott
- Department of Medicine, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA
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Gargiulo S, Sottero B, Gamba P, Chiarpotto E, Poli G, Leonarduzzi G. Plaque oxysterols induce unbalanced up-regulation of matrix metalloproteinase-9 in macrophagic cells through redox-sensitive signaling pathways: Implications regarding the vulnerability of atherosclerotic lesions. Free Radic Biol Med 2011; 51:844-55. [PMID: 21664966 DOI: 10.1016/j.freeradbiomed.2011.05.030] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2010] [Revised: 05/06/2011] [Accepted: 05/20/2011] [Indexed: 12/30/2022]
Abstract
An imbalance in the matrix metalloproteinases/tissue inhibitors of metalloproteinases (MMPs/TIMPs) contributes to atherosclerotic plaque destabilization and rupture. Here we determined whether oxysterols accumulating in advanced atherosclerotic lesions play a role in plaque destabilization. In human promonocytic U937 cells, we investigated the effects of an oxysterol mixture of composition similar to that in advanced human carotid plaques on the expression and synthesis of MMP-9 and its endogenous inhibitors TIMP-1 and TIMP-2. A marked increment of MMP-9 gene expression, but not of its inhibitors, was observed by real-time RT-PCR; MMP-9 gelatinolytic activity was also found increased by gel zymography. Consistently, a net increment of MMP-9 protein level was also observed by immunoblotting. Using antioxidants or specific inhibitors or siRNAs, we demonstrated that the oxysterol mixture induces MMP-9 expression through: (i) overproduction of reactive oxygen species, probably by NADPH-oxidase and mitochondria; (ii) up-regulation of mitogen-activated protein kinase signaling pathways via protein kinase C; and (iii) up-regulation of activator protein-1- and nuclear factor-κB-DNA binding. These results suggest, for the first time, that oxysterols accumulating in advanced atherosclerotic lesions significantly contribute to plaque vulnerability by promoting MMP-9/TIMP-1/2 imbalance in phagocytic cells.
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Affiliation(s)
- Simona Gargiulo
- Department of Clinical and Biological Sciences, University of Turin, 10043 Orbassano, Torino, Italy
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Pamukcu B, Lip GYH, Devitt A, Griffiths H, Shantsila E. The role of monocytes in atherosclerotic coronary artery disease. Ann Med 2010; 42:394-403. [PMID: 20568979 DOI: 10.3109/07853890.2010.497767] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Inflammation plays a key role in the pathogenesis of atherosclerosis. The more we discover about the molecular pathways involved in atherosclerosis, the more we perceive the importance of monocytes in this process. Circulating monocytes are components of innate immunity, and many pro-inflammatory cytokines and adhesion molecules facilitate their adhesion and migration to the vascular endothelial wall. In addition to the accumulation of lipids and formation of atherogenic 'foam' cells, monocytes may promote atherosclerotic plaque growth by production of inflammatory cytokines, matrix metalloproteinases, and reactive oxidative species. However, the contribution of monocytes to atherogenesis is not only limited to tissue destruction. Monocyte subsets are also involved in intraplaque angiogenesis and tissue reparative processes. The aim of this overview is to discuss the mechanisms of monocyte activation, the pivotal role and importance of activated monocytes in atherosclerotic coronary artery disease, their implication in the development of acute coronary events, and their potential in cardiovascular reparative processes such angiogenesis.
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Affiliation(s)
- Burak Pamukcu
- University of Birmingham Centre for Cardiovascular Sciences, City Hospital, Birmingham, B18 7QH, United Kingdom
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Murthy S, Ryan A, He C, Mallampalli RK, Carter AB. Rac1-mediated mitochondrial H2O2 generation regulates MMP-9 gene expression in macrophages via inhibition of SP-1 and AP-1. J Biol Chem 2010; 285:25062-73. [PMID: 20529870 DOI: 10.1074/jbc.m109.099655] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Aberrant matrix deposition is a hallmark of pulmonary fibrosis and is characterized by an imbalance between matrix deposition and degradation. We have previously shown that mice harboring a conditional deletion of the GTP-binding protein, Rac1, in macrophages are protected from asbestos-induced pulmonary fibrosis. To investigate the contribution of aberrant matrix degradation, we addressed the role of Rac1 in regulating expression of macrophage-specific MMP-9 (matrix metalloproteinase-9). We found that MMP-9 gene transcription was significantly greater in Rac1 null macrophages. Deletion and mutational analysis of the MMP-9 promoter revealed that both SP-1 and AP-1 are essential for MMP-9 transcription. Overexpression of constitutive active Rac1 (V12) revealed that H(2)O(2) was derived from the mitochondria. Rac1-induced H(2)O(2) generation down-regulated MMP-9 gene transcription, whereas catalase overexpression in WT cells enhanced MMP-9 expression. SP-1 interacted directly with both c-Jun and c-Fos, and H(2)O(2) decreased this binding, suggesting that SP-1 and AP-1 function cooperatively to regulate MMP-9 transcription. Rac1-mediated H(2)O(2) inhibited the ERK MAPK, which was essential for activation of SP-1 and AP-1. ERK activation and MMP-9 expression were recovered by overexpressing catalase or transfecting siRNA for the mitochondrial iron-sulfur protein, Rieske. These observations were recapitulated in vivo. MMP-9 mRNA was higher in alveolar macrophages isolated from Rac1 null mice and wild type mice given catalase. Rac1 regulates MMP-9 transcription via mitochondrial H(2)O(2) generation, providing a potential mechanism by which Rac1 null mice fail to develop pulmonary fibrosis.
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Affiliation(s)
- Shubha Murthy
- Department of Internal Medicine, Carver College of Medicine, University of Iowa, Iowa City, Iowa 52242, USA
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Oggé G, Romero R, Chaiworapongsa T, Gervasi MT, Pacora P, Erez O, Kusanovic JP, Vaisbuch E, Mazaki-Tovi S, Gotsch F, Mittal P, Kim YM, Hassan SS. Leukocytes of pregnant women with small-for-gestational age neonates have a different phenotypic and metabolic activity from those of women with preeclampsia. J Matern Fetal Neonatal Med 2010; 23:476-87. [PMID: 19916874 PMCID: PMC3426366 DOI: 10.3109/14767050903216033] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
OBJECTIVE Preeclampsia and pregnancies complicated by small-for-gestational age (SGA) neonates share several underlying mechanisms of disease. However, while an exaggerated systemic maternal inflammatory response is regarded as one of the hallmarks of the pathogenesis of preeclampsia, the presence of a similar systemic intra-vascular inflammation in mothers of SGA neonates without hypertension is controversial. The aim of this study was to determine phenotypic and metabolic changes in granulocytes and monocytes of women who develop preeclampsia and those who deliver an SGA neonate, compared to normal pregnant women. METHODS This cross-sectional study included patients with a normal pregnancy (n = 33), preeclampsia (n = 33), and an SGA without preeclampsia (n = 33), matched for gestational age at blood sample collection. Granulocyte and monocyte phenotypes were determined by flow cytometry, using monoclonal antibodies against selective cluster of differentiation (CD) antigens. The panel of antibodies included the following: CD11b, CD14, CD16, CD18, CD49d, CD62L, CD64, CD66b, and HLA-DR. Intracellular reactive oxygen species (iROS) were assessed at the basal state and after stimulation (oxidative burst). Results were reported as mean channel brightness (MCB) or intensity of detected fluorescence. Analysis was conducted with non-parametric statistics. A p-value < 0.01 was considered statistically significant. RESULTS (1) Women who delivered an SGA neonate had a higher MCB of CD11b in granulocytes and monocytes than those with a normal pregnancy (p < 0.001 for both); (2) patients with preeclampsia had a lower median MCB of CD62L in granulocytes (p = 0.006) and a higher median basal iROS and oxidative burst in monocytes than women with an SGA neonate (p = 0.003 and p = 0.002, respectively). CONCLUSION Pregnancies complicated by the delivery of an SGA neonate are characterized by a higher activation of maternal peripheral leukocytes than in normal pregnancies, but lower than in pregnancies complicated by preeclampsia.
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Affiliation(s)
- Giovanna Oggé
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
| | - Roberto Romero
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
- Center for Molecular Medicine and Genetics, Wayne State University, Detroit, Michigan, USA
| | - Tinnakorn Chaiworapongsa
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Maria Teresa Gervasi
- Department of Obstetrics and Gynecology, Azienda Ospedaliera of Padova, Padova, Italy
| | - Percy Pacora
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
| | - Offer Erez
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Juan Pedro Kusanovic
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Edi Vaisbuch
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Shali Mazaki-Tovi
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Francesca Gotsch
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
| | - Pooja Mittal
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
| | - Yeon Mee Kim
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Pathology, Detroit, Michigan, USA
| | - Sonia S. Hassan
- Perinatology Research Branch, NICHD/NIH/DHHS, Bethesda, Maryland and Detroit, Michigan, USA
- Wayne State University School of Medicine, Department of Obstetrics and Gynecology, Detroit, Michigan, USA
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Binker MG, Binker-Cosen AA, Richards D, Oliver B, Cosen-Binker LI. LPS-stimulated MUC5AC production involves Rac1-dependent MMP-9 secretion and activation in NCI-H292 cells. Biochem Biophys Res Commun 2009; 386:124-9. [PMID: 19501047 DOI: 10.1016/j.bbrc.2009.05.136] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2009] [Accepted: 05/30/2009] [Indexed: 11/16/2022]
Abstract
Chronic obstructive pulmonary disease (COPD) is an inflammatory process characterized by airway mucus hypersecretion. Previous studies have reported that lipopolysaccharides (LPS) stimulate mucin 5AC (MUC5AC) production via epidermal growth factor receptor (EGFR) in human airway cells. Moreover, this production was shown to depend on the expression and activity of matrix metalloproteinase 9 (MMP-9), which is increased in COPD patients' serum. In the present study we investigated the signaling pathway mediating LPS-stimulated secretion and activation of MMP-9, and the regulatory effects of this pathway on the production of MUC5AC in the human airway cells NCI-H292. Using specific inhibitors, we found that LPS-stimulated cells secreted and activated MMP-9 via EGFR. Our results also indicate that signaling events downstream of EGFR involved PI3K-dependent activation of Rac1, which mediated the NADPH-generated reactive oxygen species responsible for MMP-9 secretion and activation. Finally, we observed that EGFR/PI3K/Rac1/NADPH/ROS/MMP-9 regulate MUC5AC production in LPS-challenged NCI-H292 cells.
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Abstract
Background Because screening mammography for breast cancer is less effective for premenopausal women, we investigated the feasibility of a diagnostic blood test using serum proteins. Methods This study used a set of 98 serum proteins and chose diagnostically relevant subsets via various feature-selection techniques. Because of significant noise in the data set, we applied iterated Bayesian model averaging to account for model selection uncertainty and to improve generalization performance. We assessed generalization performance using leave-one-out cross-validation (LOOCV) and receiver operating characteristic (ROC) curve analysis. Results The classifiers were able to distinguish normal tissue from breast cancer with a classification performance of AUC = 0.82 ± 0.04 with the proteins MIF, MMP-9, and MPO. The classifiers distinguished normal tissue from benign lesions similarly at AUC = 0.80 ± 0.05. However, the serum proteins of benign and malignant lesions were indistinguishable (AUC = 0.55 ± 0.06). The classification tasks of normal vs. cancer and normal vs. benign selected the same top feature: MIF, which suggests that the biomarkers indicated inflammatory response rather than cancer. Conclusion Overall, the selected serum proteins showed moderate ability for detecting lesions. However, they are probably more indicative of secondary effects such as inflammation rather than specific for malignancy.
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