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Greenwood JC, Talebi FM, Jang DH, Spelde AE, Gordon EK, Horak J, Acker MA, Kilbaugh TJ, Shofer FS, Augoustides JGT, Bakker J, Brenner JS, Muzykantov VR, Abella BS. Low postoperative perfused vessel density is associated with increased soluble endothelial cell adhesion molecules during circulatory shock after cardiac surgery. Microvasc Res 2023; 150:104595. [PMID: 37619889 PMCID: PMC10530427 DOI: 10.1016/j.mvr.2023.104595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 07/11/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
INTRODUCTION Microcirculatory dysfunction after cardiovascular surgery is associated with significant morbidity and worse clinical outcomes. Abnormal capillary blood flow can occur from multiple causes, including cytokine-mediated vascular endothelial injury, microthrombosis, and an inadequate balance between vasoconstriction and vasodilation. In response to proinflammatory cytokines, endothelial cells produce cellular adhesion molecules (CAMs) which regulate leukocyte adhesion, vascular permeability, and thus can mediate tissue injury. The relationship between changes in microcirculatory flow during circulatory shock and circulating adhesion molecules is unclear. The objective of this study was to compare changes in plasma soluble endothelial cell adhesion molecules (VCAM-1, ICAM-1, and E-Selectin) in patients with functional derangements in microcirculatory blood flow after cardiovascular surgery. METHODS Adult patients undergoing elective cardiac surgery requiring cardiopulmonary bypass who exhibited postoperative shock were enrolled in the study. Sublingual microcirculation imaging was performed prior to surgery and within 2 h of ICU admission. Blood samples were taken at the time of microcirculation imaging for biomarker analysis. Plasma soluble VCAM-1, ICAM-1, and E-selectin in addition to plasma cytokines (IL-6, IL-8, and IL-10) were measured by commercially available enzyme-linked immunoassay. RESULTS Of 83 patients with postoperative shock who were evaluated, 40 patients with clinical shock had a postoperative perfused vessel density (PVD) >1 SD above (High PVD group = 28.5 ± 2.3 mm/mm2, n = 20) or below (Low PVD = 15.5 ± 2.0 mm/mm2, n = 20) the mean postoperative PVD and were included in the final analysis. Patient groups were well matched for comorbidities, surgical, and postoperative details. Overall, there was an increase in postoperative plasma VCAM-1 and E-Selectin compared to preoperative levels, but there was no difference between circulating ICAM-1. When grouped by postoperative microcirculation, patients with poor microcirculation were found to have increased circulating VCAM-1 (2413 ± 1144 vs. 844 ± 786 ng/mL; p < 0.0001) and E-Selectin (242 ± 119 vs. 87 ± 86 ng/mL; p < 0.0001) compared to patients with increased microcirculatory blood flow. Microcirculatory flow was not associated with a difference in plasma soluble ICAM-1 (394 ± 190 vs. 441 ± 256; p = 0.52). CONCLUSIONS Poor postoperative microcirculatory blood flow in patients with circulatory shock after cardiac surgery is associated with increased plasma soluble VCAM-1 and E-Selectin, indicating increased endothelial injury and activation compared to patients with a high postoperative microcirculatory blood flow. Circulating endothelial cell adhesion molecules may be a useful plasma biomarker to identify abnormal microcirculatory blood flow in patients with shock.
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Affiliation(s)
- John C Greenwood
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA; Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA.
| | - Fatima M Talebi
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - David H Jang
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Audrey E Spelde
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Emily K Gordon
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Jiri Horak
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Michael A Acker
- Division of Cardiovascular Surgery, Department of Surgery, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Todd J Kilbaugh
- Department of Anesthesiology and Critical Care Medicine, Center for Mitochondrial and Epigenomic Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
| | - Frances S Shofer
- Department of Epidemiology & Biostatistics, Department of Emergency Medicine Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - John G T Augoustides
- Department of Anesthesiology and Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
| | - Jan Bakker
- Division of Pulmonary, Allergy, and Critical Care Medicine, New York University, New York, NY, USA; Department of Intensive Care Adults, Erasmus MC University Medical Center, Rotterdam, the Netherlands
| | - Jacob S Brenner
- Division of Pulmonary, Allergy, & Critical Care, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Vladimir R Muzykantov
- Department of Pharmacology and Center for Translational Targeted Therapeutics and Nanomedicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Benjamin S Abella
- Department of Emergency Medicine, Center for Resuscitation Science, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, USA
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Zhang J, Liu L, Dong Z, Lu X, Hong W, Liu J, Zou X, Gao J, Jiang H, Sun X, Hu K, Yang Y, Ge J, Luo X, Sun A. An ischemic area-targeting, peroxynitrite-responsive, biomimetic carbon monoxide nanogenerator for preventing myocardial ischemia-reperfusion injury. Bioact Mater 2023; 28:480-494. [PMID: 37408796 PMCID: PMC10318466 DOI: 10.1016/j.bioactmat.2023.05.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 04/26/2023] [Accepted: 05/24/2023] [Indexed: 07/07/2023] Open
Abstract
Myocardial ischemia-reperfusion (MI/R) injury is common in patients who undergo revascularization therapy for myocardial infarction, often leading to cardiac dysfunction. Carbon monoxide (CO) has emerged as a therapeutic molecule due to its beneficial properties such as anti-inflammatory, anti-apoptotic, and mitochondrial biogenesis-promoting properties. However, its clinical application is limited due to uncontrolled release, potential toxicity, and poor targeting efficiency. To address these limitations, a peroxynitrite (ONOO-)-triggered CO donor (PCOD585) is utilized to generate a poly (lactic-co-glycolic acid) (PLGA)-based, biomimetic CO nanogenerator (M/PCOD@PLGA) that is coated with the macrophage membrane, which could target to the ischemic area and neutralize proinflammatory cytokines. In the ischemic area, local produced ONOO- triggers the continuous release of CO from M/PCOD@PLGA, which efficiently ameliorates MI/R injury by clearing harmful ONOO-, attenuating the inflammatory response, inhibiting cardiomyocyte apoptosis, and promoting mitochondrial biogenesis. This study provides a novel insight into the safe therapeutic use of CO for MI/R injury by utilizing a novel CO donor combined with biomimetic technology. The M/PCOD@PLGA nanogenerator offers targeted delivery of CO to the ischemic area, minimizing potential toxicity and enhancing therapeutic efficacy.
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Affiliation(s)
- Jinyan Zhang
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Liwei Liu
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Zhen Dong
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Xicun Lu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Wenxuan Hong
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Jin Liu
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Xiaoyi Zou
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Jinfeng Gao
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Hao Jiang
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Xiaolei Sun
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Kai Hu
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
| | - Youjun Yang
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, Shanghai, 200237, China
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
| | - Xiao Luo
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Aijun Sun
- Department of Cardiology, Zhongshan Hospital, Fudan University, China
- Shanghai Institute of Cardiovascular Diseases, Shanghai, China
- Institutes of Biomedical Sciences, Fudan University, Shanghai, China
- NHC Key Laboratory of Viral Heart Diseases, Shanghai, China
- Key Laboratory of Viral Heart Diseases, Chinese Academy of Medical Sciences, China
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Nemmar A, Al-Salam S, Greish YE, Beegam S, Zaaba NE, Ali BH. Impact of Intratracheal Administration of Polyethylene Glycol-Coated Silver Nanoparticles on the Heart of Normotensive and Hypertensive Mice. Int J Mol Sci 2023; 24:ijms24108890. [PMID: 37240239 DOI: 10.3390/ijms24108890] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Silver nanoparticles are widely used in various industrial and biomedical applications; however, little is known about their potential cardiotoxicity after pulmonary exposure, particularly in hypertensive subjects. We assessed the cardiotoxicity of polyethylene glycol (PEG)-coated AgNPs in hypertensive (HT) mice. Saline (control) or PEG-AgNPs (0.5 mg/kg) were intratracheally (i.t.) instilled four times (on days 7, 14, 21, and 28 post-angiotensin II or vehicle [saline] infusion). On day 29, various cardiovascular parameters were evaluated. Systolic blood pressure and heart rate were higher in PEG-AgNPs-treated HT mice than in saline-treated HT or PEG-AgNPs-treated normotensive mice. The heart histology of PEG-AgNPs-treated HT mice had comparatively larger cardiomyocyte damage with fibrosis and inflammatory cells when compared with saline-treated HT mice. Similarly, the relative heart weight and the activities of lactate dehydrogenase and creatine kinase-MB and the concentration of brain natriuretic peptide concentration were significantly augmented in heart homogenates of HT mice treated with PEG-AgNPs compared with HT mice treated with saline or normotensive animals exposed to PEG-AgNPs. Similarly, the concentrations of endothelin-1, P-selectin, vascular cell adhesion molecule-1, and intercellular adhesion molecule-1 in heart homogenates were significantly higher than in the other two groups when HT mice were exposed to PEG-AgNPs. Markers of inflammation and oxidative and nitrosative stress were significantly elevated in heart homogenates of HT mice given PEG-AgNPs compared with HT mice treated with saline or normotensive animals exposed to PEG-AgNPs. The hearts of HT mice exposed to PEG-AgNPs had significantly increased DNA damage than those of HT mice treated with saline or normotensive mice treated with AgNPs. In conclusion, the cardiac injury caused by PEG-AgNPs was aggravated in hypertensive mice. The cardiotoxicity of PEG-AgNPs in HT mice highlights the importance of an in-depth assessment of their toxicity before using them in clinical settings, particularly in patients with pre-existing cardiovascular diseases.
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Affiliation(s)
- Abderrahim Nemmar
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 17666, United Arab Emirates
- Zayed Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 17666, United Arab Emirates
| | - Suhail Al-Salam
- Zayed Center for Health Sciences, United Arab Emirates University, Al Ain P.O. Box 17666, United Arab Emirates
- Department of Pathology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O Box 17666, United Arab Emirates
| | - Yaser E Greish
- Department of Chemistry, College of Science, United Arab Emirates University, Al Ain P.O. Box 17551, United Arab Emirates
| | - Sumaya Beegam
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 17666, United Arab Emirates
| | - Nur E Zaaba
- Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain P.O. Box 17666, United Arab Emirates
| | - Badreldin H Ali
- Department of Pharmacology and Clinical Pharmacy, College of Medicine and Health Sciences, Sultan Qaboos University, Muscat 123, Oman
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Malandish A, Karimi A, Naderi M, Ghadamyari N, Gulati M. The impacts of exercise interventions on inflammatory markers and vascular adhesion molecules in patients with heart failure: A meta-analysis of RCTs. CJC Open 2023. [DOI: 10.1016/j.cjco.2023.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023] Open
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Quo Vadis? Immunodynamics of Myeloid Cells after Myocardial Infarction. Int J Mol Sci 2022; 23:ijms232415814. [PMID: 36555456 PMCID: PMC9779515 DOI: 10.3390/ijms232415814] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 12/09/2022] [Accepted: 12/10/2022] [Indexed: 12/15/2022] Open
Abstract
Myocardial infarction (MI), a major contributor to worldwide morbidity and mortality, is caused by a lack of blood flow to the heart. Affected heart tissue becomes ischemic due to deficiency of blood perfusion and oxygen delivery. In case sufficient blood flow cannot be timely restored, cardiac injury with necrosis occurs. The ischemic/necrotic area induces a systemic inflammatory response and hundreds of thousands of leukocytes are recruited from the blood to the injured heart. The blood pool of leukocytes is rapidly depleted and urgent re-supply of these cells is needed. Myeloid cells are generated in the bone marrow (BM) and spleen, released into the blood, travel to sites of need, extravasate and accumulate inside tissues to accomplish various functions. In this review we focus on the "leukocyte supply chain" and will separately evaluate different myeloid cell compartments (BM, spleen, blood, heart) in steady state and after MI. Moreover, we highlight the local and systemic kinetics of extracellular factors, chemokines and danger signals involved in the regulation of production/generation, release, transportation, uptake, and activation of myeloid cells during the inflammatory phase of MI.
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Farrokhi A, Rahavi M, Jo S, Jalili R, Lim CJ, Ghahsary A, Reid GSD. Inflammatory Immune Responses Trigger Rejection of Allogeneic Fibroblasts Transplanted into Mouse Skin. Cell Transplant 2022; 31:9636897221113803. [PMID: 35912954 PMCID: PMC9340901 DOI: 10.1177/09636897221113803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Fibroblasts, or their homolog stromal cells, are present in most tissues and play an essential role in tissue homeostasis and regeneration. As a result, fibroblast-based strategies have been widely employed in tissue engineering. However, while considered to have immunosuppressive properties, the survival and functionality of allogeneic fibroblasts after transplantation remain controversial. Here, we evaluated innate and adaptive immune responses against allogeneic fibroblasts following intradermal injection into different immune-deficient mouse strains. While allogeneic fibroblasts were rejected 1 week after transplantation in immunocompetent mice, rejection did not occur in immunodeficient γ chain–deficient NOD-SCID (NSG) mice. T-cell- and B-cell-deficient RAG1 knockout mice showed greater loss of fibroblasts by day 5 after transplantation compared with NSG mice (P ≤ 0.05) but prolonged persistence compared with wild-type recipient (P ≤ 0.005). Loss of fibroblasts correlated with the expression of proinflammatory chemokine genes and infiltration of myeloid cells in the transplantation site. Depletion of macrophages and neutrophils delayed rejection, revealing the role of innate immune cells in an early elimination of fibroblasts that is followed by T-cell-mediated rejection in the second week. These findings indicate that the application of allogeneic fibroblasts in tissue engineering products requires further improvements to overcome cell rejection by innate and adaptive immune cells.
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Affiliation(s)
- Ali Farrokhi
- Michael Cuccione Childhood Cancer Research Program, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
- Department of Pediatrics, The University of British Columbia, Vancouver, BC, Canada
| | - MohammadReza Rahavi
- Michael Cuccione Childhood Cancer Research Program, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
| | - Sumin Jo
- Michael Cuccione Childhood Cancer Research Program, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
| | - Reza Jalili
- Burn & Wound Healing Research Group, Division of Plastic Surgery, Department of Surgery and International Collaboration on Repair Discoveries, The University of British Columbia, Vancouver, BC, Canada
| | - C. James Lim
- Michael Cuccione Childhood Cancer Research Program, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
- Department of Pediatrics, The University of British Columbia, Vancouver, BC, Canada
| | - Aziz Ghahsary
- Burn & Wound Healing Research Group, Division of Plastic Surgery, Department of Surgery and International Collaboration on Repair Discoveries, The University of British Columbia, Vancouver, BC, Canada
| | - Gregor S. D. Reid
- Michael Cuccione Childhood Cancer Research Program, BC Children’s Hospital Research Institute, Vancouver, BC, Canada
- Department of Pediatrics, The University of British Columbia, Vancouver, BC, Canada
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From dissection of fibrotic pathways to assessment of drug interactions to reduce cardiac fibrosis and heart failure. CURRENT RESEARCH IN PHARMACOLOGY AND DRUG DISCOVERY 2021; 2:100036. [PMID: 34909666 PMCID: PMC8663973 DOI: 10.1016/j.crphar.2021.100036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/14/2021] [Accepted: 05/18/2021] [Indexed: 12/14/2022] Open
Abstract
Cardiac fibrosis is characterized by extracellular matrix deposition in the cardiac interstitium, and this contributes to cardiac contractile dysfunction and progression of heart failure. The main players involved in this process are the cardiac fibroblasts, which, in the presence of pro-inflammatory/pro-fibrotic stimuli, undergo a complete transformation acquiring a more proliferative, a pro-inflammatory and a secretory phenotype. This review discusses the cellular effectors and molecular pathways implicated in the pathogenesis of cardiac fibrosis and suggests potential strategies to monitor the effects of specific drugs designed to slow down the progression of this disease by specifically targeting the fibroblasts.
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Singh M, Thakur M, Mishra M, Yadav M, Vibhuti R, Menon AM, Nagda G, Dwivedi VP, Dakal TC, Yadav V. Gene regulation of intracellular adhesion molecule-1 (ICAM-1): A molecule with multiple functions. Immunol Lett 2021; 240:123-136. [PMID: 34715236 DOI: 10.1016/j.imlet.2021.10.007] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 10/15/2021] [Accepted: 10/25/2021] [Indexed: 01/04/2023]
Abstract
Intracellular adhesion molecule 1 (ICAM-1) is one of the most extensively studied inducible cell adhesion molecules which is responsible for several immune functions like T cell activation, extravasation, inflammation, etc. The molecule is constitutively expressed over the cell surface and is regulated up / down in response to inflammatory mediators like cellular stress, proinflammatory cytokines, viral infection. These stimuli modulate the expression of ICAM-1 primarily through regulating the ICAM-1 gene transcription. On account of the presence of various binding sites for NF-κB, AP-1, SP-1, and many other transcription factors, the architecture of the ICAM-1 promoter become complex. Transcription factors in union with other transcription factors, coactivators, and suppressors promote their assembly in a stereospecific manner on ICAM-1 promoter which mediates ICAM-1 regulation in response to different stimuli. Along with transcriptional regulation, epigenetic modifications also play a pivotal role in controlling ICAM-1 expression on different cell types. In this review, we summarize the regulation of ICAM-1 expression both at the transcriptional as well as post-transcriptional level with an emphasis on transcription factors and signaling pathways involved.
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Affiliation(s)
- Mona Singh
- Special Centre for Molecular Medicine, Jawaharlal Nehru University, New Delhi-110067 India
| | - Mony Thakur
- Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana-123031 India
| | - Manish Mishra
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research- Institute of Microbial Technology, Chandigarh-160036 India
| | - Manisha Yadav
- Division of Cell Biology and Immunology, Council of Scientific and Industrial Research- Institute of Microbial Technology, Chandigarh-160036 India
| | - Rajkamal Vibhuti
- Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana-123031 India
| | - Athira M Menon
- Genome and computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan 313001 India
| | - Girima Nagda
- Department of Zoology, Mohanlal Sukhadia University, Udaipur, Rajasthan-313001 India
| | - Ved Prakash Dwivedi
- International Centre for Genetic Engineering and Biotechnology, ICGEB Campus, Aruna Asaf Ali Marg, New Delhi-110067 India
| | - Tikam Chand Dakal
- Genome and computational Biology Lab, Department of Biotechnology, Mohanlal Sukhadia University, Udaipur, Rajasthan 313001 India
| | - Vinod Yadav
- Department of Microbiology, Central University of Haryana, Mahendergarh, Haryana-123031 India
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Muñoz‐Ortiz T, Hu J, Ortgies DH, Shrikhande S, Zamora‐Perez P, Granado M, González‐Hedström D, Fuente‐Fernández M, García‐Villalón ÁL, Andrés‐Delgado L, Martín Rodríguez E, Aguilar R, Alfonso F, García Solé J, Rivera Gil P, Jaque D, Rivero F. Molecular Imaging of Infarcted Heart by Biofunctionalized Gold Nanoshells. Adv Healthc Mater 2021; 10:e2002186. [PMID: 33594792 DOI: 10.1002/adhm.202002186] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Indexed: 01/03/2023]
Abstract
The unique combination of physical and optical properties of silica (core)/gold (shell) nanoparticles (gold nanoshells) makes them especially suitable for biomedicine. Gold nanoshells are used from high-resolution in vivo imaging to in vivo photothermal tumor treatment. Furthermore, their large scattering cross-section in the second biological window (1000-1700 nm) makes them also especially adequate for molecular optical coherence tomography (OCT). In this work, it is demonstrated that, after suitable functionalization, gold nanoshells in combination with clinical OCT systems are capable of imaging damage in the myocardium following an infarct. Since both inflammation and apoptosis are two of the main mechanisms underlying myocardial damage after ischemia, such damage imaging is achieved by endowing gold nanoshells with selective affinity for the inflammatory marker intercellular adhesion molecule 1 (ICAM-1), and the apoptotic marker phosphatidylserine. The results here presented constitute a first step toward a fast, safe, and accurate diagnosis of damaged tissue within infarcted hearts at the molecular level by means of the highly sensitive OCT interferometric technique.
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Affiliation(s)
- Tamara Muñoz‐Ortiz
- Nanomaterials for Bioimaging Group Departamento de Física de Materiales Universidad Autónoma de Madrid C/ Francisco Tomás y Valiente 7 Madrid 28049 Spain
| | - Jie Hu
- Xiamen Institute of Rare‐earth Materials, Haixi Institutes Chinese Academy of Sciences 258 Duishanxiheng Road, Jimei District Xiamen Fujian 361024 China
| | - Dirk H. Ortgies
- Nanomaterials for Bioimaging Group Departamento de Física de Materiales Universidad Autónoma de Madrid C/ Francisco Tomás y Valiente 7 Madrid 28049 Spain
- Instituto Ramón y Cajal de Investigación Sanitaria Hospital Ramón y Cajal Ctra. Colmenar km. 9,100 Madrid 28034 Spain
| | - Shreya Shrikhande
- Integrative Biomedical Materials and Nanomedicine Lab Department of Experimental and Health Sciences Pompeu Fabra University Carrer Doctor Aiguader 88 Barcelona 08003 Spain
| | - Paula Zamora‐Perez
- Integrative Biomedical Materials and Nanomedicine Lab Department of Experimental and Health Sciences Pompeu Fabra University Carrer Doctor Aiguader 88 Barcelona 08003 Spain
| | - Miriam Granado
- Nanomaterials for Bioimaging Group Departamento de Fisiología Facultad de Medicina Universidad Autónoma de Madrid C/ Arzobispo Morcillo s/n Madrid 28029 Spain
| | - Daniel González‐Hedström
- Nanomaterials for Bioimaging Group Departamento de Fisiología Facultad de Medicina Universidad Autónoma de Madrid C/ Arzobispo Morcillo s/n Madrid 28029 Spain
| | - María Fuente‐Fernández
- Nanomaterials for Bioimaging Group Departamento de Fisiología Facultad de Medicina Universidad Autónoma de Madrid C/ Arzobispo Morcillo s/n Madrid 28029 Spain
| | - Ángel Luis García‐Villalón
- Nanomaterials for Bioimaging Group Departamento de Fisiología Facultad de Medicina Universidad Autónoma de Madrid C/ Arzobispo Morcillo s/n Madrid 28029 Spain
| | - Laura Andrés‐Delgado
- Departamento de Anatomía Histología y Neurociencia Facultad de Medicina. Universidad Autónoma de Madrid. C/ Arzobispo Morcillo s/n Madrid 28029 Spain
| | - Emma Martín Rodríguez
- Instituto Ramón y Cajal de Investigación Sanitaria Hospital Ramón y Cajal Ctra. Colmenar km. 9,100 Madrid 28034 Spain
- Nanomaterials for Bioimaging Group Departamento de Física Aplicada Universidad Autónoma de Madrid C/ Francisco Tomás y Valiente 7 Madrid 28049 Spain
| | - Río Aguilar
- Cardiology Department Hospital Universitario de la Princesa Instituto Investigación Sanitaria Princesa (IIS‐IP) CIBER‐CV Universidad Autónoma de Madrid Calle Diego de León, 62 Madrid 28006 Spain
| | - Fernando Alfonso
- Cardiology Department Hospital Universitario de la Princesa Instituto Investigación Sanitaria Princesa (IIS‐IP) CIBER‐CV Universidad Autónoma de Madrid Calle Diego de León, 62 Madrid 28006 Spain
| | - José García Solé
- Nanomaterials for Bioimaging Group Departamento de Física de Materiales Universidad Autónoma de Madrid C/ Francisco Tomás y Valiente 7 Madrid 28049 Spain
| | - Pilar Rivera Gil
- Integrative Biomedical Materials and Nanomedicine Lab Department of Experimental and Health Sciences Pompeu Fabra University Carrer Doctor Aiguader 88 Barcelona 08003 Spain
| | - Daniel Jaque
- Nanomaterials for Bioimaging Group Departamento de Física de Materiales Universidad Autónoma de Madrid C/ Francisco Tomás y Valiente 7 Madrid 28049 Spain
- Instituto Ramón y Cajal de Investigación Sanitaria Hospital Ramón y Cajal Ctra. Colmenar km. 9,100 Madrid 28034 Spain
| | - Fernando Rivero
- Cardiology Department Hospital Universitario de la Princesa Instituto Investigación Sanitaria Princesa (IIS‐IP) CIBER‐CV Universidad Autónoma de Madrid Calle Diego de León, 62 Madrid 28006 Spain
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Poveda-Jaramillo R. Heart Dysfunction in Sepsis. J Cardiothorac Vasc Anesth 2020; 35:298-309. [PMID: 32807603 DOI: 10.1053/j.jvca.2020.07.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 06/11/2020] [Accepted: 07/05/2020] [Indexed: 12/24/2022]
Abstract
Cardiac involvement during sepsis frequently occurs. A series of molecules induces a set of changes at the cellular level that result in the malfunction of the myocardium. The understanding of these molecular alterations has simultaneously promoted the implementation of diagnostic strategies that are much more precise and allowed the advance of the therapeutics. The heart is a vital organ for survival. Its well-being ensures the adequate supply of essential elements for organs and tissues.
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11
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Tikhomirov R, Reilly-O’Donnell B, Catapano F, Faggian G, Gorelik J, Martelli F, Emanueli C. Exosomes: From Potential Culprits to New Therapeutic Promise in the Setting of Cardiac Fibrosis. Cells 2020; 9:E592. [PMID: 32131460 PMCID: PMC7140485 DOI: 10.3390/cells9030592] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Revised: 02/19/2020] [Accepted: 02/27/2020] [Indexed: 12/11/2022] Open
Abstract
Fibrosis is a significant global health problem associated with many inflammatory and degenerative diseases affecting multiple organs, individually or simultaneously. Fibrosis develops when extracellular matrix (ECM) remodeling becomes excessive or uncontrolled and is associated with nearly all forms of heart disease. Cardiac fibroblasts and myofibroblasts are the main effectors of ECM deposition and scar formation. The heart is a complex multicellular organ, where the various resident cell types communicate between themselves and with cells of the blood and immune systems. Exosomes, which are small extracellular vesicles, (EVs), contribute to cell-to-cell communication and their pathophysiological relevance and therapeutic potential is emerging. Here, we will critically review the role of endogenous exosomes as possible fibrosis mediators and discuss the possibility of using stem cell-derived and/or engineered exosomes as anti-fibrotic agents.
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Affiliation(s)
- Roman Tikhomirov
- National Heart and Lung Institute, Imperial College London, Hammersmith Campus, Du Cane Road, London W12 0NN, UK; (R.T.); (B.R.-O.); (F.C.); (J.G.)
- Department of Surgery, Dentistry, Pediatrics and Gynecology, Cardiovascular Science, The University of Verona, Policlinico G., B. Rossi, P.le. La Scuro 10, 37134 Verona, Italy; (G.F.); (F.M.)
- Molecular Cardiology Laboratory, IRCCS Policlinico San Donato, Via Morandi 30, 20097 San Donato Milanese Milano, Italy
| | - Benedict Reilly-O’Donnell
- National Heart and Lung Institute, Imperial College London, Hammersmith Campus, Du Cane Road, London W12 0NN, UK; (R.T.); (B.R.-O.); (F.C.); (J.G.)
| | - Francesco Catapano
- National Heart and Lung Institute, Imperial College London, Hammersmith Campus, Du Cane Road, London W12 0NN, UK; (R.T.); (B.R.-O.); (F.C.); (J.G.)
| | - Giuseppe Faggian
- Department of Surgery, Dentistry, Pediatrics and Gynecology, Cardiovascular Science, The University of Verona, Policlinico G., B. Rossi, P.le. La Scuro 10, 37134 Verona, Italy; (G.F.); (F.M.)
| | - Julia Gorelik
- National Heart and Lung Institute, Imperial College London, Hammersmith Campus, Du Cane Road, London W12 0NN, UK; (R.T.); (B.R.-O.); (F.C.); (J.G.)
| | - Fabio Martelli
- Department of Surgery, Dentistry, Pediatrics and Gynecology, Cardiovascular Science, The University of Verona, Policlinico G., B. Rossi, P.le. La Scuro 10, 37134 Verona, Italy; (G.F.); (F.M.)
| | - Costanza Emanueli
- National Heart and Lung Institute, Imperial College London, Hammersmith Campus, Du Cane Road, London W12 0NN, UK; (R.T.); (B.R.-O.); (F.C.); (J.G.)
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12
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Bolívar S, Anfossi R, Humeres C, Vivar R, Boza P, Muñoz C, Pardo-Jimenez V, Olivares-Silva F, Díaz-Araya G. IFN-β Plays Both Pro- and Anti-inflammatory Roles in the Rat Cardiac Fibroblast Through Differential STAT Protein Activation. Front Pharmacol 2018; 9:1368. [PMID: 30555324 PMCID: PMC6280699 DOI: 10.3389/fphar.2018.01368] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2018] [Accepted: 11/07/2018] [Indexed: 01/05/2023] Open
Abstract
Cardiac fibroblasts (CFs) contribute to theinflammatory response to tissue damage, secreting both pro- and anti-inflammatory cytokines and chemokines. Interferon beta (IFN-β) induces the phosphorylation of signal transducer and activator of transcription (STAT) proteins through the activation of its own receptor, modulating the secretion of cytokines and chemokines which regulate inflammation. However, the role of IFN-β and STAT proteins in modulating the inflammatory response of CF remains unknown. CF were isolated from adult male rats and subsequently stimulated with IFN-β to evaluate the participation of STAT proteins in secreting chemokines, cytokines, cell adhesion proteins expression and in their capacity to recruit neutrophils. In addition, in CF in which the TRL4 receptor was pre-activated, the effect of INF-β on the aforementioned responses was also evaluated. Cardiac fibroblasts stimulation with IFN-β showed an increase in STAT1, STAT2, and STAT3 phosphorylation. IFN-β stimulation through STAT1 activation increased proinflammatory chemokines MCP-1 and IP-10 secretion, whereas IFN-β induced activation of STAT3 increased cytokine secretion of anti-inflammatory IL-10. Moreover, in TLR4-activated CF, IFN-β through STAT2 and/or STAT3, produced an anti-inflammatory effect, reducing pro-IL-1β, TNF-α, IL-6, MCP-1, and IP-10 secretion; and decreasing neutrophil recruitment by decreasing ICAM-1 and VCAM-1 expression. Altogether, our results indicate that IFN-β exerts both pro-inflammatory and anti-inflammatory effects in non-stimulated CF, through differential activation of STAT proteins. When CF were previously treated with an inflammatory agent such as TLR-4 activation, IFN-β effects were predominantly anti-inflammatory.
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Affiliation(s)
- Samir Bolívar
- Faculty of Chemistry and Pharmacy, Atlantic University, Barranquilla, Colombia.,Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Renatto Anfossi
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Claudio Humeres
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Raúl Vivar
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Pía Boza
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Claudia Muñoz
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Viviana Pardo-Jimenez
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Francisco Olivares-Silva
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile
| | - Guillermo Díaz-Araya
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemical and Pharmaceutical Sciences, University of Chile, Santiago, Chile.,Advanced Center for Chronic Diseases, Faculty of Chemical and Pharmaceutical Sciences and Faculty of Medicine, University of Chile, Santiago, Chile
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13
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Beyazit F, Büyük B, Turkon H, Elmas S, Uzun M. Adalimumab mitigates ovarian ischemia-reperfusion injury in rats by regulating oxidative stress, apoptosis and resolution of inflammation. J Obstet Gynaecol Res 2018; 45:358-367. [PMID: 30358007 DOI: 10.1111/jog.13846] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023]
Abstract
AIM Ovarian torsion is a rare but an important reason of acute lower abdominal pain in women and associated with serious morbidity and mortality, if not treated promptly. The aim of this study was to evaluate the effects of an antitumor necrosis factor-α antibody on ovarian torsion in a rat model of ischemia-reperfusion (I/R) injury. METHODS Forty female Wistar Albino rats were used in the present study. The rats were randomly divided into four groups: group I (sham), group II (I/R), group III (I/R + isotonic saline) and group IV (I/R + adalimumab). The I/R model was induced by torsion of both ovaries. Immunohistochemical staining for interleukin-1β (IL-1β), nuclear factor-κB (NF-κB), and inducible nitric oxide synthase was performed. Tissue and serum oxidative stress markers in conjunction with apoptotic index (AI) with the terminal deoxynucleotidyl transferase dUTP nick end labeling method were also calculated. RESULTS Tissue total oxidant status, oxidative stress index and nitric oxide values were significantly decreased, and tissue total antioxidant status was found to be increased in group IV. Inflammation, vascular congestion and hemorrhagia were significantly lower in adalimumab-treated group. Serum oxidative stress markers and tissue malondialdehyde levels did not differ in study groups. The AI was significantly increased in groups 2 and 3. Adalimumab treatment significantly decreased the AI. CONCLUSION Adalimumab therapy in rats attenuated I/R induced ovarian injury, possibly suppressing inflammation, inhibiting oxidative stress, and altering apoptotic pathways.
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Affiliation(s)
- Fatma Beyazit
- Department of Obstetrics and Gynecology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Başak Büyük
- Department of Histology and Embryology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Hakan Turkon
- Department of Biochemistry, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Sait Elmas
- Experimental Research Application and Research Center, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
| | - Metehan Uzun
- Department of Physiology, Çanakkale Onsekiz Mart University, Çanakkale, Turkey
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14
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Ma ZG, Yuan YP, Wu HM, Zhang X, Tang QZ. Cardiac fibrosis: new insights into the pathogenesis. Int J Biol Sci 2018; 14:1645-1657. [PMID: 30416379 PMCID: PMC6216032 DOI: 10.7150/ijbs.28103] [Citation(s) in RCA: 202] [Impact Index Per Article: 33.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 08/02/2018] [Indexed: 12/21/2022] Open
Abstract
Cardiac fibrosis is defined as the imbalance of extracellular matrix (ECM) production and degradation, thus contributing to cardiac dysfunction in many cardiac pathophysiologic conditions. This review discusses specific markers and origin of cardiac fibroblasts (CFs), and the underlying mechanism involved in the development of cardiac fibrosis. Currently, there are no CFs-specific molecular markers. Most studies use co-labelling with panels of antibodies that can recognize CFs. Origin of fibroblasts is heterogeneous. After fibrotic stimuli, the levels of myocardial pro-fibrotic growth factors and cytokines are increased. These pro-fibrotic growth factors and cytokines bind to its receptors and then trigger the activation of signaling pathway and transcriptional factors via Smad-dependent or Smad independent-manners. These fibrosis-related transcriptional factors regulate gene expression that are involved in the fibrosis to amplify the fibrotic response. Understanding the mechanisms responsible for initiation, progression, and amplification of cardiac fibrosis are of great clinical significance to find drugs that can prevent the progression of cardiac fibrosis.
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Affiliation(s)
- Zhen-Guo Ma
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, RP China.,Cardiovascular Research Institute of Wuhan University, Wuhan 430060, RP China.,Hubei Key Laboratory of Cardiology, Wuhan 430060, RP China
| | - Yu-Pei Yuan
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, RP China.,Cardiovascular Research Institute of Wuhan University, Wuhan 430060, RP China.,Hubei Key Laboratory of Cardiology, Wuhan 430060, RP China
| | - Hai-Ming Wu
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, RP China.,Cardiovascular Research Institute of Wuhan University, Wuhan 430060, RP China.,Hubei Key Laboratory of Cardiology, Wuhan 430060, RP China
| | - Xin Zhang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, RP China.,Cardiovascular Research Institute of Wuhan University, Wuhan 430060, RP China.,Hubei Key Laboratory of Cardiology, Wuhan 430060, RP China
| | - Qi-Zhu Tang
- Department of Cardiology, Renmin Hospital of Wuhan University, Wuhan 430060, RP China.,Cardiovascular Research Institute of Wuhan University, Wuhan 430060, RP China.,Hubei Key Laboratory of Cardiology, Wuhan 430060, RP China
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15
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Epac1 Restores Normal Insulin Signaling through a Reduction in Inflammatory Cytokines. Mediators Inflamm 2018; 2018:3809092. [PMID: 30116147 PMCID: PMC6079497 DOI: 10.1155/2018/3809092] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 06/05/2018] [Accepted: 06/20/2018] [Indexed: 01/21/2023] Open
Abstract
We have previously reported that Epac1 reduced inflammatory cytokines, which is protective to the diabetic retina. We have also published that impaired insulin signaling occurs in the diabetic retina. A reduction in interleukin-1 beta (IL-1β) and tumor necrosis factor alpha (TNFα) by Epac1 could potentially restore normal insulin signal transduction. Confocal microscopy was performed to localize the insulin receptor in the retina of Epac1 floxed and endothelial cell-specific Epac1 knockout mice. Whole retinal lysates from Epac1 floxed and endothelial cell-specific Epac1 knockout mice were used to investigate proteins involved in the insulin signaling cascade. Primary human REC were cultured in normal and high glucose followed by Epac1 agonist treatment or transfection with IL-1β or TNFα siRNA for protein analyses of insulin signaling proteins. Decreased expression of the insulin receptor was observed in the Epac1 knockout mouse retinal vasculature compared to floxed littermates. Work in mice showed that loss of Epac1 decreased insulin signaling proteins. Treatment with an Epac1 agonist decreased p38 and JNK signaling and increased insulin signaling, as did inhibition of IL-1β or TNFα using siRNA when added to REC grown in high glucose. Taken together, Epac1 can restore normal insulin signaling in the retinal vasculature through reductions in inflammatory cytokines.
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16
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Gao L, Fu S, Wang W, Xie C, Zhang Y, Gong F. Notch4 signaling pathway in a Kawasaki disease mouse model induced by Lactobacillus casei cell wall extract. Exp Ther Med 2017; 13:3438-3442. [PMID: 28587423 PMCID: PMC5450570 DOI: 10.3892/etm.2017.4434] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 02/17/2017] [Indexed: 01/01/2023] Open
Abstract
The present study aimed to explore the role of the Notch4 signaling pathway in a mouse model of Kawasaki disease (KD) induced by Lactobacillus casei cell wall extract (LCWE). BALB/c male mice (4–6 weeks old) were intraperitoneally injected with 500 µg LCWE in phosphate-buffered saline (PBS) or PBS alone (control group). At days 3, 7, 14 and 28, the numbers of circulating endothelial progenitor cells (EPCs) in the peripheral blood and the expression of Notch4 on the surface of EPCs were detected. In addition, the levels of vascular cell adhesion molecule 1 (VCAM-1) and P-selectin in the roots of coronary arteries were evaluated. The results demonstrated that the level of circulating EPCs increased significantly at day 3, decreased progressively from day 3 onwards, and recovered to the normal level at day 28. Furthermore, the expression of Notch4 on the surface of EPCs was evidently higher in the KD model compared with that in the control group at day 7. In the endothelial cells of the coronary artery root, the protein levels of VCAM-1 and P-selectin protein increased in the KD model. In conclusion, the Notch4 signaling pathway participated in the coronary artery lesions in the KD animal model induced by LCWE.
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Affiliation(s)
- Lichao Gao
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Songling Fu
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Wei Wang
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Chunhong Xie
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Yiying Zhang
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
| | - Fangqi Gong
- Department of Cardiology, Children's Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang 310003, P.R. China
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17
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Yang PF, Song XY, Zeng T, Ai QD, Liu DD, Zuo W, Zhang S, Xia CY, He X, Chen NH. IMM-H004, a coumarin derivative, attenuated brain ischemia/reperfusion injuries and subsequent inflammation in spontaneously hypertensive rats through inhibition of VCAM-1. RSC Adv 2017. [DOI: 10.1039/c7ra02154b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
We studied the effect of IMM-H004 in treating brain I/R injury in spontaneously hypertensive rats and showed that IMM-H004 could efficiently ameliorate neurological defects and infarct volume in a time and dose dependent manner.
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Affiliation(s)
- Peng-Fei Yang
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Xiu-Yun Song
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Ting Zeng
- College of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Qi-Di Ai
- College of Pharmacy
- Hunan University of Chinese Medicine
- Changsha
- China
| | - Dan-Dan Liu
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- China
| | - Wei Zuo
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Shuai Zhang
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Cong-Yuan Xia
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
| | - Xin He
- Tianjin University of Traditional Chinese Medicine
- Tianjin
- China
| | - Nai-Hong Chen
- Department of State Key Laboratory of Bioactive Substances and Functions of Natural Medicines
- Institute of Materia Medica & Neuroscience Center
- Chinese Academy of Medical Sciences
- Peking Union Medical College
- Beijing 100050
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18
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Humeres C, Vivar R, Boza P, Muñoz C, Bolivar S, Anfossi R, Osorio JM, Olivares-Silva F, García L, Díaz-Araya G. Cardiac fibroblast cytokine profiles induced by proinflammatory or profibrotic stimuli promote monocyte recruitment and modulate macrophage M1/M2 balance in vitro. J Mol Cell Cardiol 2016; 101:S0022-2828(16)30392-3. [PMID: 27983968 DOI: 10.1016/j.yjmcc.2016.10.014] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 10/24/2016] [Accepted: 10/25/2016] [Indexed: 12/13/2022]
Abstract
Macrophage polarization plays an essential role in cardiac remodeling after injury, evolving from an initial accumulation of proinflammatory M1 macrophages to a greater balance of anti-inflammatory M2 macrophages. Whether cardiac fibroblasts themselves influence this process remains an intriguing question. In this work, we present evidence for a role of cardiac fibroblasts (CF) as regulators of macrophage recruitment and skewing. Adult rat CF, were treated with lipopolysaccharide (LPS) or TGF-β1, to evaluate ICAM-1 and VCAM-1 expression using Western blot and proinflammatory/profibrotic cytokine secretion using LUMINEX. We performed in vitro migration and adhesion assays of rat spleen monocytes to layers of TGF-β1- or LPS-pretreated CF. Finally, TGF-β1- or LPS-pretreated CF were co-cultured with monocyte, to evaluate their effects on macrophage polarization, using flow cytometry and cytokine secretion. There was a significant increase in monocyte adhesion to LPS- or TGF-β1-stimulated CF, associated with increased CF expression of ICAM-1 and VCAM-1. siRNA silencing of either ICAM-1 or VCAM-1 inhibited monocyte adhesion to LPS-pretreated CF; however, monocyte adhesion to TGF-β1-treated CF was dependent on only VCAM-1 expression. Pretreatment of CF with LPS or TGF-β1 increased monocyte migration to CF, and this effect was completely abolished with an MCP-1 antibody blockade. LPS-treated CF secreted elevated levels of TNF-α and MCP-1, and when co-cultured with monocyte, LPS-treated CF stimulated increased macrophage M1 polarization and secretion of proinflammatory cytokines (TNF-α, IL-12 and MCP-1). On the other hand, CF stimulated with TGF-β1 produced an anti-inflammatory cytokine profile (high IL-10 and IL-5, low TNF-α). When co-cultured with monocytes, the TGF-β1 stimulated fibroblasts skewed monocyte differentiation towards M2 macrophages accompanied by increased IL-10 and decreased IL-12 levels. Taken together, our results show for the first time that CF can recruit monocytes (via MCP-1-mediated chemotaxis and adhesion to ICAM-1/VCAM-1) and induce their differentiation to M1 or M2 macrophages (through the CF cytokine profile induced by proinflammatory or profibrotic stimuli).
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Affiliation(s)
- Claudio Humeres
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Raúl Vivar
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile; Centro Avanzado de Enfermedades Crónicas (ACCDis), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Pia Boza
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Claudia Muñoz
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Samir Bolivar
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Renatto Anfossi
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Jose Miguel Osorio
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Francisco Olivares-Silva
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Lorena García
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile; Centro Avanzado de Enfermedades Crónicas (ACCDis), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile
| | - Guillermo Díaz-Araya
- Departamento de Química Farmacológica y Toxicológica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile; Centro Avanzado de Enfermedades Crónicas (ACCDis), Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile,Chile.
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19
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Madonna R, Massaro M, Pandolfi A, Consoli A, De Caterina R. The Prominent Role of P38 Mitogen-Activated Protein Kinase in Insulin-Mediated Enhancement of VCAM-1 Expression in Endothelial Cells. Int J Immunopathol Pharmacol 2016; 20:539-55. [PMID: 17880767 DOI: 10.1177/039463200702000312] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Insulin levels are a marker for cardiovascular events, but the link between hyperinsulinemia and atherosclerosis is poorly understood. We previously showed that insulin increases monocyte-endothelial interactions and the endothelial expression of the pro-atherogenic vascular cell adhesion molecule-1 (VCAM-1). The aim of this study is to examine molecular mechanisms involved in the effect of insulin on VCAM-1 expression. Human umbilical vein endothelial cells (HUVEC) were incubated with insulin (0–24 h) ± inhibitors of signaling pathways potentially involved. At pathophysiological concentrations (10−9-10−7 M), insulin selectively induced VCAM-1 expression. The p38mitogen activated protein(MAP) kinase inhibitors SB203580 and SB202190, and partially the c-Jun NH2-terminal kinase (JNK) inhibitor SP600127, decreased insulin effect on VCAM-1. Gene silencing by small interfering RNA significantly reduced the expression of p38MAP kinase, and this was accompanied by suppression of insulin-stimulated VCAM-1 expression. Treatment with insulin also led to the activation of NF-κB and induction of IκB-α phosphorylation, thus accounting for NF-κB translocation into the nucleus. Co-treatment of HUVEC with insulin and SB202190 strongly reverted the stimulatory effect of insulin on NF-κB activation, thus establishing a link between NF-κB activation and p38MAPkinase-mediated induction of VCAM-1 by insulin. In conclusion, pathophysiological insulin concentrations increase VCAM-1 expression and activate NF-κB. This mostly occurs through stimulation of p38MAP kinase.
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Affiliation(s)
- R Madonna
- Center of Excellence on Aging, G.d'Annunzio University, Chieti, Italy
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20
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Abstract
Sepsis-induced myocardial dysfunction is a common complication in septic patients and is associated with increased mortality. In the clinical setting, it was once believed that myocardial dysfunction was not a major pathological process in the septic patients, at least in part, due to the unavailability of suitable clinical markers to assess intrinsic myocardial function during sepsis. Although sepsis-induced myocardial dysfunction has been studied in clinical and basic research for more than 30 years, its pathophysiology is not completely understood, and no specific therapies for this disorder exist. The purpose of this review is to summarize our current knowledge of sepsis-induced myocardial dysfunction with a special focus on pathogenesis and clinical characteristics.
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Affiliation(s)
- Xiuxiu Lv
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People’s Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632 China
| | - Huadong Wang
- Department of Pathophysiology, Key Laboratory of State Administration of Traditional Chinese Medicine of the People’s Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632 China
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21
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Biswas I, Singh B, Sharma M, Agrawala PK, Khan GA. Extracellular RNA facilitates hypoxia-induced leukocyte adhesion and infiltration in the lung through TLR3-IFN-γ-STAT1 signaling pathway. Eur J Immunol 2015; 45:3158-73. [PMID: 26350442 DOI: 10.1002/eji.201545597] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2015] [Revised: 08/18/2015] [Accepted: 09/04/2015] [Indexed: 01/12/2023]
Abstract
Endogenous ligands released from dying cells, including extracellular RNA (eRNA), cause TLR activation, which is associated with inflammation and vascular diseases. However, the importance of this response in acute hypoxia (AH) remains unexplored. Here, we observed eRNA-mediated TLR3 activation during exposure of mice to AH in the absence of exogenous viral stimuli. RNaseA treatment diminished AH-induced expression of IFN and cell adhesion molecules (CAMs) and myeloid cell infiltration in the lung, and TLR3 gene silencing or neutralization with antibodies markedly attenuated AH- or poly I:C-induced IFN and CAM expression and leukocyte adhesion (LA) and myeloid cell infiltration in the lung. However, RNaseA treatment or TLR3 gene silencing failed to alter AH-induced cell death and proliferation in lung vasculature. Furthermore, IFN-γ--but not IFN-α--regulated AH-induced CAM expression and LA. Treatment with RNaseA, TLR3 siRNA, neutralizing antibodies, or a STAT1 inhibitor substantially decreased AH- and poly I:C-induced STAT1 phosphorylation, CAM expression, and myeloid cell infiltration, suggesting a central role for STAT1 phosphorylation in AH-induced LA and infiltration. We conclude that eRNA activates TLR3 and facilitates, through in vivo IFN-γ-STAT1 signaling, AH-induced leukocyte infiltration in the lung. Thus, RNaseA might provide a therapeutic alternative for patients with lung diseases.
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Affiliation(s)
- Indranil Biswas
- Department of Physiology, Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi, India
| | - Bandana Singh
- Department of Physiology, Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi, India
| | - Manish Sharma
- Department of Proteomics, Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi, India
| | - Paban K Agrawala
- Institute of Nuclear Medicine and Allied Sciences, Timarpur, Delhi, India
| | - Gausal A Khan
- Department of Physiology, Defence Institute of Physiology and Allied Sciences, Timarpur, Delhi, India
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22
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Lin CC, Pan CS, Wang CY, Liu SW, Hsiao LD, Yang CM. Tumor necrosis factor-alpha induces VCAM-1-mediated inflammation via c-Src-dependent transactivation of EGF receptors in human cardiac fibroblasts. J Biomed Sci 2015; 22:53. [PMID: 26173590 PMCID: PMC4502472 DOI: 10.1186/s12929-015-0165-8] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2015] [Accepted: 07/07/2015] [Indexed: 01/08/2023] Open
Abstract
BACKGROUND Tumor necrosis factor-α (TNF-α) is a proinflammatory cytokine and elevated in the regions of tissue injury and inflammatory diseases. The deleterious effects of TNF-α on fibroblasts may aggravate heart inflammation mediated through the up-regulation of adhesion molecules such as vascular cell adhesion molecule-1 (VCAM-1). However, the mechanisms underlying TNF-α-induced VCAM-1 expression in cardiac fibroblasts remain unknown. This study aimed to investigate the roles of TNF-α in VCAM-1 expression and its effects on human cardiac fibroblasts (HCFs). RESULTS The primary culture HCFs were used in this study. The results obtained with Western blotting, real time-quantitative PCR, and promoter activity analyses showed that TNF-α-induced VCAM-1 expression was mediated through TNF receptor (TNFR) 1-dependent gene up-regulation. Activation of TNFR1 by TNF-α transactivated c-Src-dependent EGF receptor (EGFR) linking to PI3K/Akt cascade, and then led to transcriptional activity of NF-κB. Moreover, the results of promoter reporter assay demonstrated that the phosphorylated p65 NF-κB turned on VCAM-1 gene expression. Subsequently, up-regulation of VCAM-1 promoted monocytes adhesion to HCFs challenged with TNF-α determined by cell adhesion assay. CONCLUSIONS Taken together, these results indicate that in HCFs, activation of NF-κB by c-Src-mediated transactivation of EGFR/PI3K/Akt cascade is required for TNF-α-induced VCAM-1 expression. Finally, increased VCAM-1 enhances monocytes adhering to HCFs challenged with TNF-α. Understanding the mechanisms of VCAM-1 up-regulated by TNF-α on HCFs may provide rationally therapeutic interventions for heart injury or inflammatory diseases.
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Affiliation(s)
- Chih-Chung Lin
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkuo, Kwei-Shan, Tao-Yuan, Taiwan.,College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chih-Shuo Pan
- Department of Physiology, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan.,Department of Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chen-Yu Wang
- Department of Physiology, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan.,Department of Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, Taiwan
| | - Shiau-Wen Liu
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkuo, Kwei-Shan, Tao-Yuan, Taiwan.,College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Li-Der Hsiao
- Department of Anesthetics, Chang Gung Memorial Hospital at Linkuo, Kwei-Shan, Tao-Yuan, Taiwan.,College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan
| | - Chuen-Mao Yang
- Department of Physiology, College of Medicine, Chang Gung University, Kwei-Shan, Tao-Yuan, Taiwan. .,Department of Pharmacology and Health Aging Research Center, College of Medicine, Chang Gung University, 259 Wen-Hwa 1st Road, Kwei-Shan, Tao-Yuan, Taiwan.
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23
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Díaz-Araya G, Vivar R, Humeres C, Boza P, Bolivar S, Muñoz C. Cardiac fibroblasts as sentinel cells in cardiac tissue: Receptors, signaling pathways and cellular functions. Pharmacol Res 2015; 101:30-40. [PMID: 26151416 DOI: 10.1016/j.phrs.2015.07.001] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2015] [Revised: 06/30/2015] [Accepted: 07/01/2015] [Indexed: 12/24/2022]
Abstract
Cardiac fibroblasts (CF) not only modulate extracellular matrix (ECM) proteins homeostasis, but also respond to chemical and mechanical signals. CF express a variety of receptors through which they modulate the proliferation/cell death, autophagy, adhesion, migration, turnover of ECM, expression of cytokines, chemokines, growth factors and differentiation into cardiac myofibroblasts (CMF). Differentiation of CF to CMF involves changes in the expression levels of various receptors, as well as, changes in cell phenotype and their associated functions. CF and CMF express the β2-adrenergic receptor, and its stimulation activates PKA and EPAC proteins, which differentially modulate the CF and CMF functions mentioned above. CF and CMF also express different levels of Angiotensin II receptors, in particular, AT1R activation increases collagen synthesis and cell proliferation, but its overexpression activates apoptosis. CF and CMF express different levels of B1 and B2 kinin receptors, whose stimulation by their respective agonists activates common signaling transduction pathways that decrease the synthesis and secretion of collagen through nitric oxide and prostacyclin I2 secretion. Besides these classical functions, CF can also participate in the inflammatory response of cardiac repair, through the expression of receptors commonly associated to immune cells such as Toll like receptor 4, NLRP3 and interferon receptor. The activation by their respective agonists modulates the cellular functions already described and the release of cytokines and chemokines. Thus, CF and CMF act as sentinel cells responding to a plethora of stimulus, modifying their own behavior, and that of neighboring cells.
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Affiliation(s)
- G Díaz-Araya
- Laboratory of Molecular Pharmacology, Chemical Pharmacological and Toxicological Department, Faculty of Chemical and Pharmaceutical Sciences, FONDAP Advanced Center for Chronic diseases ACCDiS, University of Chile, Santiago, Chile.
| | - R Vivar
- Laboratory of Molecular Pharmacology, Chemical Pharmacological and Toxicological Department, Faculty of Chemical and Pharmaceutical Sciences, FONDAP Advanced Center for Chronic diseases ACCDiS, University of Chile, Santiago, Chile
| | - C Humeres
- Laboratory of Molecular Pharmacology, Chemical Pharmacological and Toxicological Department, Faculty of Chemical and Pharmaceutical Sciences, FONDAP Advanced Center for Chronic diseases ACCDiS, University of Chile, Santiago, Chile
| | - P Boza
- Laboratory of Molecular Pharmacology, Chemical Pharmacological and Toxicological Department, Faculty of Chemical and Pharmaceutical Sciences, FONDAP Advanced Center for Chronic diseases ACCDiS, University of Chile, Santiago, Chile
| | - S Bolivar
- Laboratory of Molecular Pharmacology, Chemical Pharmacological and Toxicological Department, Faculty of Chemical and Pharmaceutical Sciences, FONDAP Advanced Center for Chronic diseases ACCDiS, University of Chile, Santiago, Chile
| | - C Muñoz
- Laboratory of Molecular Pharmacology, Chemical Pharmacological and Toxicological Department, Faculty of Chemical and Pharmaceutical Sciences, FONDAP Advanced Center for Chronic diseases ACCDiS, University of Chile, Santiago, Chile
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24
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Vascular endothelial injury and apoptosis in rats with severe acute pancreatitis. Gastroenterol Res Pract 2015; 2015:235017. [PMID: 25688263 PMCID: PMC4320903 DOI: 10.1155/2015/235017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/12/2014] [Accepted: 01/05/2015] [Indexed: 02/05/2023] Open
Abstract
We explored mechanisms of vascular endothelial injury that lead to systemic multiple organ failure by detecting the soluble endothelial protein C receptor (sEPCR), von Willebrand factor (vWF), serum nitric oxide (NO), and tumor necrosis factor alpha (TNF-α) and Bcl-2 mRNA and Bax mRNA expression in a severe acute pancreatitis (SAP) rat model. Compared to controls, the levels of TNF-α, vWF, and sEPCR were significantly increased in the experimental group at 12 hours and 24 hours and the NO level was significantly decreased. After 12 hours, the aortic endothelial apoptosis index and Bax mRNA expression in aortic endothelial cells had increased in the experimental group, but Bcl-2 mRNA levels had decreased. All these changes appeared at both 12 h and 24 hours. The results indicated that vascular endothelial injury and apoptosis markers were elevated in SAP. Endothelial injury and increased apoptosis in the experimental group were related to the increased expression of TNF-α.
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25
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Lappas M. GSK3β is increased in adipose tissue and skeletal muscle from women with gestational diabetes where it regulates the inflammatory response. PLoS One 2014; 9:e115854. [PMID: 25541965 PMCID: PMC4277409 DOI: 10.1371/journal.pone.0115854] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2014] [Accepted: 11/27/2014] [Indexed: 11/22/2022] Open
Abstract
Infection and inflammation, through their ability to increase pro-inflammatory cytokines and chemokines and adhesion molecules, are thought to play a central role in the pathophysiology of insulin resistance and type 2 diabetes. Recent studies have shown that glycogen synthase kinase 3 (GSK3) plays a central role in regulating this inflammation. There are, however, no studies on the role of GSK3 in pregnancies complicated by gestational diabetes mellitus (GDM). Thus, the aims of this study were (i) to determine whether GSK3 is increased in adipose tissue and skeletal muscle from women with GDM; and (ii) to investigate the effect of GSK3 inhibition on inflammation in the presence of inflammation induced by bacterial endotoxin lipopolysaccharide (LPS) or the pro-inflammatory cytokine IL-1β. Human omental adipose tissue and skeletal muscle were obtained from normal glucose tolerant (NGT) women and BMI-matched women with diet-control GDM at the time of Caesarean section. Western blotting was performed to determine GSK3 protein expression. Tissue explants were performed to determine the effect of the GSK3 inhibitor CHIR99021 on markers of inflammation. When compared to women with NGT, omental adipose tissue and skeletal muscle obtained from women with diet-controlled GDM had significantly higher GSK3β activity as evidenced by a decrease in the expression of GSK3β phosphorylated at serine 9. The GSK3 inhibitor CHIR99021 significantly reduced the gene expression and secretion of the pro-inflammatory cytokines TNF-α, IL-1β and IL-6; the pro-inflammatory chemokines IL-8 and MCP-1; and the adhesion molecules ICAM-1 and VCAM-1 in tissues stimulated with LPS or IL-1β. In conclusion, GSK3 activity is increased in GDM adipose tissue and skeletal muscle and regulates infection- and inflammation-induced pro-inflammatory mediators.
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Affiliation(s)
- Martha Lappas
- Obstetrics, Nutrition and Endocrinology Group, Department of Obstetrics and Gynaecology, University of Melbourne, Victoria, Australia
- Mercy Perinatal Research Centre, Mercy Hospital for Women, Heidelberg, Victoria, Australia
- * E-mail:
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26
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Ahn J, Ruiz P, Barber GN. Intrinsic self-DNA triggers inflammatory disease dependent on STING. THE JOURNAL OF IMMUNOLOGY 2014; 193:4634-42. [PMID: 25261479 DOI: 10.4049/jimmunol.1401337] [Citation(s) in RCA: 131] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Inflammatory diseases such as Aicardi-Goutières syndrome and severe systemic lupus erythematosus are generally lethal disorders that have been traced to defects in the exonuclease TREX1 (DNase III). Mice lacking TREX1 similarly die at an early age through comparable symptoms, including inflammatory myocarditis, through chronic activation of the stimulator of IFN genes (STING) pathway. In this study, we demonstrate that phagocytes rather than myocytes are predominantly responsible for causing inflammation, an outcome that could be alleviated following adoptive transfer of normal bone marrow into TREX1(-/-) mice. TREX1(-/-) macrophages did not exhibit significant augmented ability to produce proinflammatory cytokines compared with normal macrophages following exposure to STING-dependent activators, but rather appeared chronically stimulated by genomic DNA. These results shed molecular insight into inflammation and provide concepts for the design of new therapies.
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Affiliation(s)
- Jeonghyun Ahn
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, FL 33136; Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136; and
| | - Phillip Ruiz
- Department of Surgery, University of Miami Miller School of Medicine, Miami, FL 33136
| | - Glen N Barber
- Department of Cell Biology, University of Miami Miller School of Medicine, Miami, FL 33136; Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136; and
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27
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Shih MF, Cherng JY. Reduction of adhesion molecule production and alteration of eNOS and endothelin-1 mRNA expression in endothelium by Euphorbia hirta L. through its beneficial β-amyrin molecule. Molecules 2014; 19:10534-45. [PMID: 25045892 PMCID: PMC6271859 DOI: 10.3390/molecules190710534] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Revised: 07/03/2014] [Accepted: 07/11/2014] [Indexed: 12/27/2022] Open
Abstract
The inflammatory reaction in large blood vessels involves up-regulation of vascular adhesion molecules such as endothelial cell selectin (E-selectin), soluble vascular cell adhesion molecule (sVCAM)-1, and soluble intercellular adhesion molecule (sICAM)-1. These vascular dysfunctions are associated with the development of atherosclerosis. β-Amyrin, an active component of Euphorbia hirta L., has potent anti-inflammatory effects. So far, its preventive effects against the expression of inflammatory mediator-induced adhesion molecules have not been investigated. Endothelial cells (SVEC4-10 cell line) were treated with 50% RAW conditioned media (i.e., normal SVEC4-10 culture media contains 50% of lipopolysaccharide-activated macrophage culture media) without or with β-amyrin (0.6 and 0.3 µM). The production levels of E-selectin, sICAM-1, and sVCAM-1 in the SVEC4-10 cells were measured with ELISA assay kits. Under the same treatment conditions, expression of endothelin (ET)-1 and endothelial type of NO synthase (eNOS) mRNA were analyzed by RT-PCR and agarose gel. With β-amyrin, the 50% RAW conditioned media-induced E-selectin, sICAM-1, and sVCAM-1 levels as well as ET-1 gene expression were all suppressed. β-Amyrin treatment also restored the 50% RAW conditioned media-suppressed eNOS mRNA expression. These data indicate that β-amyrin is potentially useful in preventing chronic inflammation-related vascular diseases.
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Affiliation(s)
- Mei Fen Shih
- Department of Pharmacy, Chia-Nan University of Pharmacy & Science, Tainan 717, Taiwan.
| | - Jong Yuh Cherng
- Department of Chemistry and Biochemistry, National Chung Cheng University, Chia-Yi 621, Taiwan.
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28
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Perán M, López-Ruiz E, González-Herrera L, Bustamante M, Valenzuela A, Marchal JA. Cellular extracts from post-mortem human cardiac tissue direct cardiomyogenic differentiation of human adipose tissue-derived stem cells. Cytotherapy 2014; 15:1541-8. [PMID: 24199593 DOI: 10.1016/j.jcyt.2013.06.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Revised: 05/14/2013] [Accepted: 06/22/2013] [Indexed: 01/31/2023]
Abstract
BACKGROUND AIMS Human adipose tissue-derived stem cells (hASCs) can be easily (and inexpensively) expanded in culture, and their high plasticity allows their conversion to different cell types. We study the potential capacity of postmortem cardiac tissue to direct cardiac differentiation of hASCs in vitro. METHODS Cardiac tissue collected from autopsies was used to obtain cell extracts and conditioned medium, and both approaches were tested for cardiac induction. RESULTS Gene expression analyses proved that post-mortem human cardiac tissue maintains genetic integrity. hASCs exposed to the cell extracts or conditioned medium for 2 weeks achieved the appearance of myotube-like structures and were positive for cardiac markers such as sarcomeric α-actinin, cardiac troponin I and T and desmin as proved by immunofluorescence. In addition, differentiated cells showed increased expression of cardiomyocyte-related genes analyzed by reverse transcriptase polymerase chain reaction (GATA-4, myocyte-enhancer factor-2c, α-cardiac actin and cardiac troponin I). CONCLUSIONS For the first time, post-mortem human cardiac tissue was used to induce hASC differentiation into myocardial-like cells. The methodology described here would serve as a useful model to obtain cardiomyocyte-like cells in vitro.
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Affiliation(s)
- Macarena Perán
- Department of Health Sciences, University of Jaén, Spain.
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29
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Du G, Song Y, Zhang T, Ma L, Bian N, Chen X, Feng J, Chang Q, Li Z. Simvastatin attenuates TNF‑α‑induced apoptosis in endothelial progenitor cells via the upregulation of SIRT1. Int J Mol Med 2014; 34:177-82. [PMID: 24718722 DOI: 10.3892/ijmm.2014.1740] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 04/01/2014] [Indexed: 01/30/2023] Open
Abstract
Endothelial progenitor cells (EPCs) originate from the bone marrow and can be classified as either early or late EPCs. The focus of this study was on late EPCs, as they play an important role in angiogenesis and vascular proliferation. Evidence suggests that inflammatory and oxidative changes can increase EPC apoptosis. Of note, tumor necrosis factor-α (TNF-α) is a contributing risk factor to the development of atherosclerosis and plays a key role as both an inflammatory mediator and an inducer of apoptosis in endothelial cells. Additionally, a member of the sirtuin family, silent information regulator type-1 (SIRT1), promotes cell survival by repressing p53- and non-p53-dependent apoptosis in response to DNA damage and oxidative stress. Statins have also been shown to play a key role in the prevention of endothelial apoptosis and senescence via their lipid-lowering and anti-inflammatory actions. However, there is little evidence that statins themselves attenuate EPC apoptosis induced by TNF-α. The aim of this study was to demonstrate the effectiveness of one of the most commonly used statins, simvastatin, on decreasing TNF-α-induced apoptosis in EPCs. The results indicated that SIRT1 protein expression was decreased by TNF-α in a time- and dose-dependent manner and that while TNF-α caused a marked increase in the percentage of apoptotic EPCs, application of simvastatin decreased this percentage. A high concentration of simvastatin promoted the expression of SIRT1 and increased the proliferation of EPCs. In conclusion, findings of this study showed that simvastatin is crucial in counteracting the TNF-α-induced apoptosis of EPCs and that this protection may involve the actions of SIRT1.
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Affiliation(s)
- Gang Du
- Department of Internal Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, P.R. China
| | - Yunlin Song
- Intensive Care Unit, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, P.R. China
| | - Tao Zhang
- Department of Internal Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, P.R. China
| | - Long Ma
- Intensive Care Unit, The First Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, P.R. China
| | - Ning Bian
- Department of Internal Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, P.R. China
| | - Xiaoming Chen
- Department of Internal Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, P.R. China
| | - Jianyi Feng
- Department of Internal Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, P.R. China
| | - Qing Chang
- Department of Histology and Embryology, Medical College of Jinan University, Guangzhou 510632, P.R. China
| | - Zicheng Li
- Department of Internal Medicine, The First Affiliated Hospital of Jinan University, Guangzhou 510630, P.R. China
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30
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Wei G, Guan Y, Yin Y, Duan J, Zhou D, Zhu Y, Quan W, Xi M, Wen A. Anti-inflammatory effect of protocatechuic aldehyde on myocardial ischemia/reperfusion injury in vivo and in vitro. Inflammation 2014; 36:592-602. [PMID: 23269534 DOI: 10.1007/s10753-012-9581-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Myocardial ischemia/reperfusion (MI/R) injury, in which inflammatory response plays a vital role, is frequently encountered in clinical practice. The present study was aimed to investigate the anti-inflammatory effect and the possible mechanism of protocatechuic aldehyde (PAl) on MI/R injury both in vivo and in vitro. The rat model of MI/R injury was induced by ligation of the left anterior descending coronary artery for 30 min, followed by 3-h reperfusion, and pretreatment with PAl could protect the heart from MI/R injury by reducing myocardial infarct size and the activities of creatine kinase-MB and cardiac troponin I (cTn-I) in serum. Also, PAl administration markedly reduced cellular injury induced by simulated ischemia/reperfusion (SI/R) in cultured neonatal rat cardiomyocytes, which was evidenced by increased cell viability, reduced lactate dehydrogenase and cTn-I activities in the culture medium, and greatly decreased percentage of cell apoptosis. Moreover, the levels of tumor necrosis factor-α, interleukin-6, intracellular adhesion molecule-1, phosphorylated IκB-α, and the nuclear translocation of nuclear factor-kappa B (NF-κB) were all evidently decreased by PAl both in vivo and in vitro. Taken together, these observations suggested that PAl could exert great protective effects against MI/R injury in rats and SI/R injury in cultured neonatal rat cardiomyocytes, and the cardioprotective mechanism might be involved in the suppression of inflammatory response via inhibiting the NF-κB signaling pathway.
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Affiliation(s)
- Guo Wei
- Department of Pharmacy, Xijing Hospital, The Fourth Military Medical University, Xi'an 710032, China
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31
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Shih MF, Chen LC, Cherng JY. Chlorella 11-peptide inhibits the production of macrophage-induced adhesion molecules and reduces endothelin-1 expression and endothelial permeability. Mar Drugs 2013; 11:3861-74. [PMID: 24129228 PMCID: PMC3826139 DOI: 10.3390/md11103861] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 09/13/2013] [Accepted: 09/17/2013] [Indexed: 01/17/2023] Open
Abstract
The inflammation process in large vessels involves the up-regulation of vascular adhesion molecules such as endothelial cell selectin (E-selectin), intercellular cell adhesion molecule-1 (ICAM-1) and vascular cell adhesion molecule-1 (VCAM-1) which are also known as the markers of atherosclerosis. We have reported that Chlorella 11-peptide exhibited effective anti-inflammatory effects. This peptide with an amino sequence Val-Glu-Cys-Tyr-Gly-Pro-Asn-Arg-Pro-Gln-Phe was further examined for its potential in preventing atherosclerosis in this study. In particular, the roles of Chlorella 11-peptide in lowering the production of vascular adhesion molecules, monocyte chemoattractant protein (MCP-1) and expression of endothelin-1 (ET-1) from endothelia (SVEC4-10 cells) were studied. The production of E-selectin, ICAM-1, VCAM-1 and MCP-1 in SVEC4-10 cells was measured with ELISA. The mRNA expression of ET-1 was analyzed by RT-PCR and agarose gel. Results showed that Chlorella 11-peptide significantly suppressed the levels of E-selectin, ICAM, VCAM, MCP-1 as well as ET-1 gene expression. The inhibition of ICAM-1 and VCAM-1 production by Chlorella 11-peptide was reversed in the presence of protein kinase A inhibitor (H89) which suggests that the cAMP pathway was involved in the inhibitory cause of the peptide. In addition, this peptide was shown to reduce the extent of increased intercellular permeability induced by combination of 50% of lipopolysaccharide (LPS)-activated RAW 264.7 cells medium and 50% normal SEVC cell culture medium (referred to as 50% RAW-conditioned medium). These data demonstrate that Chlorella 11-peptide is a promising biomolecule in preventing chronic inflammatory-related vascular diseases.
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Affiliation(s)
- Mei Fen Shih
- Department of Pharmacy, Chia-Nan University of Pharmacy & Science, 60 Erh-Te Rd, Sec. 1, Tainan 71710, Taiwan; E-Mail:
| | - Lih Chi Chen
- Department of Pharmacy, Taipei City Hospital, Taipei 10341, Taiwan; E-Mail:
- Food and Drug Division, Department of Health, Taipei City Government, Taipei 11008, Taiwan
| | - Jong Yuh Cherng
- Department of Biochemistry and Chemistry, National Chung Cheng University, 168 University Rd, Chia-Yi 62102, Taiwan
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +886-989-976-368; Fax: +886-5-272-1040
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Chen D, Fang F, Yang Y, Chen J, Xu G, Xu Y, Gao Y. Brahma-related gene 1 (Brg1) epigenetically regulates CAM activation during hypoxic pulmonary hypertension. Cardiovasc Res 2013; 100:363-73. [PMID: 24042015 DOI: 10.1093/cvr/cvt214] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
AIMS Establishment of an inflammatory milieu following elevated leukocyte adhesion to the vascular endothelium, which is mediated by transcriptional activation of cell adhesion molecules (CAMs), contributes to the pathogenesis of chronic hypoxia-induced pulmonary hypertension (HPH). The epigenetic switch that dictates CAM transactivation in response to hypoxia in endothelial cells leading up to HPH is not fully appreciated. METHODS AND RESULTS We report here that brahma-related gene 1 (Brg1) and brahma (Brm), two catalytic components of the mammalian chromatin remodelling complex, were induced in cultured endothelial cells challenged with hypoxia in vitro as well as in pulmonary arteries in an animal model of HPH. Over-expression of Brg1/Brm enhanced, while the depletion of Brg1/Brm attenuated, CAM transactivation and adhesion of leukocytes. Endothelial-specific deletion of Brg1/Brm ameliorated vascular inflammation and HPH in mice. Chromatin immunoprecipitation (ChIP) and re-ChIP assays revealed that hypoxia up-regulated the occupancies of Brg1 and Brm on CAM promoters in a nuclear factor κB (NF-κB) -dependent manner. Finally, Brg1 and Brm activated CAM transcription by altering the chromatin structure surrounding the CAM promoters. CONCLUSION Our data suggest that Brg1 provides the crucial epigenetic link to hypoxia-induced CAM induction and leukocyte adhesion that engenders endothelial malfunction and pathogenesis of HPH. As such, targeting Brg1 in endothelial cells may yield promising strategies in the intervention and/or prevention of HPH.
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Affiliation(s)
- Dewei Chen
- Department of Pathophysiology and High Altitude Physiology, College of High Altitude Military Medicine, Chongqing 400038, China
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Al-Sadi R, Guo S, Ye D, Dokladny K, Alhmoud T, Ereifej L, Said HM, Ma TY. Mechanism of IL-1β modulation of intestinal epithelial barrier involves p38 kinase and activating transcription factor-2 activation. THE JOURNAL OF IMMUNOLOGY 2013; 190:6596-606. [PMID: 23656735 DOI: 10.4049/jimmunol.1201876] [Citation(s) in RCA: 99] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The defective intestinal epithelial tight junction (TJ) barrier has been postulated to be an important pathogenic factor contributing to intestinal inflammation. It has been shown that the proinflammatory cytokine IL-1β causes an increase in intestinal permeability; however, the signaling pathways and the molecular mechanisms involved remain unclear. The major purpose of this study was to investigate the role of the p38 kinase pathway and the molecular processes involved. In these studies, the in vitro intestinal epithelial model system (Caco-2 monolayers) was used to delineate the cellular and molecular mechanisms, and a complementary in vivo mouse model system (intestinal perfusion) was used to assess the in vivo relevance of the in vitro findings. Our data indicated that the IL-1β increase in Caco-2 TJ permeability correlated with an activation of p38 kinase. The activation of p38 kinase caused phosphorylation and activation of p38 kinase substrate, activating transcription factor (ATF)-2. The activated ATF-2 translocated to the nucleus where it attached to its binding motif on the myosin L chain kinase (MLCK) promoter region, leading to the activation of MLCK promoter activity and gene transcription. Small interfering RNA induced silencing of ATF-2, or mutation of the ATF-2 binding motif prevented the activation of MLCK promoter and MLCK mRNA transcription. Additionally, in vivo intestinal perfusion studies also indicated that the IL-1β increase in mouse intestinal permeability required p38 kinase-dependent activation of ATF-2. In conclusion, these studies show that the IL-1β-induced increase in intestinal TJ permeability in vitro and in vivo was regulated by p38 kinase activation of ATF-2 and by ATF-2 regulation of MLCK gene activity.
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Affiliation(s)
- Rana Al-Sadi
- Department of Internal Medicine, University of New Mexico School of Medicine, Albuquerque, NM 87131, USA
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Bala K, Gohil NK. Interaction of glycated protein and DFO mimicked hypoxia in cellular responses of HUVECs. MOLECULAR BIOSYSTEMS 2013; 8:2657-63. [PMID: 22790884 DOI: 10.1039/c2mb25156f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The accelerated non-enzymatic modification of proteins by Maillard reaction during prolonged hyperglycemia is a key player in the diabetes associated pathology. In addition, hypoxia has been implicated in the recent past as a modulating factor. Therefore we have examined the interaction of glycation modified human serum albumin (AGE-HSA) and deferoxamine (DFO) mimicked hypoxia on the expression of hypoxia inducible factor 1α (HIF-1α), and the role of RAGE (receptor for AGE) signaling in up-regulation of HIF-1α. Expression of VEGF (a downstream target of HIF-1α) and sICAM-1 (inflammatory marker) was also detected. When HUVEC were subjected to hypoxia, highest expression of HIF-1α was observed. When treated with AGE-HSA at two concentrations, higher expression was found vis-a-vis control, with 0.2 mg ml(-1) than 2.0 mg ml(-1) which was mediated in part by RAGE as determined by RAGE silencing. However, when the cells were exposed to a combination treatment of hypoxia and AGE-HSA, a biphasic effect at the two different concentrations was observed as compared to the individual treatments. VEGF was synergistically up-regulated by hypoxia and AGE-HSA. On the other hand sICAM-1 was up-regulated by AGE-HSA but down-regulated by hypoxia. These results show that AGE-HSA functions as a non-hypoxic factor which modulates the expression of HIF-1α in a concentration dependent manner in the range studied. It can be concluded that glycated serum proteins may activate HIF-1α independently in diabetes. Further, when both glycated proteins and hypoxic conditions are present, they act in opposition in regulation of HIF-1α.
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Affiliation(s)
- Kanchan Bala
- Centre for Biomedical Engineering, Indian Institute of Technology, Hauz Khas, New Delhi 110 016, India.
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Du CQ, Yang L, Han J, Yang J, Yao XY, Hu XS, Hu SJ. The elevated serum S100A8/A9 during acute myocardial infarction is not of cardiac myocyte origin. Inflammation 2012; 35:787-96. [PMID: 21887593 DOI: 10.1007/s10753-011-9375-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Overproduction of circulating S100A8/A9 occurs in patients following acute myocardial infarction (AMI). It remains unclear whether ischemia insult per se induces S100A8 and S100A9 expression in cardiac myocytes or even whether the cardiac myocytes participate as a source of these proteins. In this study, western blot analysis and quantitative real-time reverse transcription polymerase chain reaction were used to test samples obtained from isolated spontaneously hypertensive rat hearts and Wistar-Kyoto rat hearts subjected to global normothermic ischemia and from neonatal Wistar rat cardiac myocytes undergoing hypoxia. Ischemia did not increase the expression of S100A8 and S100A9 proteins and mRNA in the myocardium either from the spontaneously hypertensive rat hearts or the Wistar-Kyoto rat hearts. In addition, the levels of S100A8 and S100A9 proteins were unchanged in the neonatal rat cardiac myocytes undergoing hypoxia. However, both ischemia and hypoxia activated NF-kappaB in ischemic myocardium and in hypoxic cardiac cells in a time-dependent manner. The results suggest that the increased serum S100A8/A9 concentrations following AMI were not of cardiac myocyte origin.
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Affiliation(s)
- Chang-Qing Du
- Institute of Cardiology, the First Affiliated Hospital, School of Medicine, Zhejiang University, 79 Qing Chun Road, Hangzhou, Zhejiang 310003, People's Republic of China
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Apelin–APJ induces ICAM-1, VCAM-1 and MCP-1 expression via NF-κB/JNK signal pathway in human umbilical vein endothelial cells. Amino Acids 2012; 43:2125-36. [DOI: 10.1007/s00726-012-1298-7] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2011] [Accepted: 04/06/2012] [Indexed: 12/11/2022]
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de Toledo A, Nagata E, Yoshida Y, Oho T. Streptococcus oralis coaggregation receptor polysaccharides induce inflammatory responses in human aortic endothelial cells. Mol Oral Microbiol 2012; 27:295-307. [DOI: 10.1111/j.2041-1014.2012.00646.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Long-Term Statin Therapy in Patients With Systolic Heart Failure and Normal Cholesterol: Effects on Elevated Serum Markers of Collagen Turnover, Inflammation, and B-Type Natriuretic Peptide. Clin Ther 2012; 34:91-100. [DOI: 10.1016/j.clinthera.2011.11.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 11/01/2011] [Accepted: 11/01/2011] [Indexed: 11/23/2022]
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Association of IL1B polymorphism with left ventricular systolic dysfunction: a relation with the release of interleukin-1β in stress condition. Pharmacogenet Genomics 2011; 21:579-86. [PMID: 21811191 DOI: 10.1097/fpc.0b013e3283493a05] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Proinflammatory cytokines play a major role in the pathomechanisms of heart failure. Besides this, the influence of mental stress on heart failure is poorly documented despite its effects on sympathetic stimulation of interleukin-1β (IL-1β) secretion. We examined whether the polymorphisms of proinflammatory cytokines are predictors of left ventricular systolic dysfunction (LVSD) and if so, whether such associations are related to the secretion of these cytokines, in 572 consecutive patients under mental stress produced by coronary angiography. METHODS We examined IL-1RN (VNTR), IL1A-889 C>T, IL1B-511 C>T, IL6-174 G>C and TNFA-308 G>A, according to LVSD (left ventricular ejection fraction, <40%). Saliva IL-1β, serum tumour necrosis factor-α and C-reactive protein were assayed in basal (T0 and T2, before and after coronary angiography) and stress (T1) conditions. MAIN RESULTS The 42.1% of patients with LVSD had a 1.5-fold higher frequency of IL1B T allele (P<0.001). IL1B-511TT was associated with LVSD (P=0.008) and with a decrease in IL-1β level in saliva at T1 (P=0.013). IL-1β was the highest at T1 (P<0.001) and was associated with left ventricular ejection fraction (P=0.002). The IL1B TT genotype and the C-reactive protein were the two independent predictors of LVSD in multivariate analysis, with an odds ratio of 2.7 (95% confidence interval: 1.3-5.5; P=0.008) and 1.1 (95% confidence interval: 1.1-1.2; P<0.001), respectively. CONCLUSION IL1B was a predictor of LVSD and of the decreased IL-1β response to stress. This suggests that IL1B exerts an influence on LVSD through its effect on IL-1β secretion.
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Turner NA, Das A, O’Regan DJ, Ball SG, Porter KE. Human cardiac fibroblasts express ICAM-1, E-selectin and CXC chemokines in response to proinflammatory cytokine stimulation. Int J Biochem Cell Biol 2011; 43:1450-8. [DOI: 10.1016/j.biocel.2011.06.008] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2011] [Revised: 06/13/2011] [Accepted: 06/14/2011] [Indexed: 11/17/2022]
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Turner NA. Therapeutic regulation of cardiac fibroblast function: targeting stress-activated protein kinase pathways. Future Cardiol 2011; 7:673-91. [DOI: 10.2217/fca.11.41] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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O'Brien KA, Ling S, Abbas E, Dai A, Zhang J, Wang WC, Bensoussan A, Luo R, Guo ZX, Komesaroff PA. A chinese herbal preparation containing radix salviae miltiorrhizae, radix notoginseng and borneolum syntheticum reduces circulating adhesion molecules. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2011; 2011:790784. [PMID: 18955365 PMCID: PMC3137567 DOI: 10.1093/ecam/nen060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/13/2007] [Accepted: 08/21/2008] [Indexed: 11/13/2022]
Abstract
Circulating adhesion molecules (CAMs), surface proteins expressed in the vascular endothelium, have emerged as risk factors for cardiovascular disease (CVD). CAMs are involved in intercellular communication that are believed to play a role in atherosclerosis. A Chinese medicine, the "Dantonic Pill" (DP) (also known as the "Cardiotonic Pill"), containing three Chinese herbal material medica, Radix Salviae Miltiorrhizae, Radix Notoginseng and Borneolum Syntheticum, has been used in China for the prevention and management of CVD. Previous laboratory and animal studies have suggested that this preparation reduces both atherogenesis and adhesion molecule expression. A parallel double blind randomized placebo-controlled study was conducted to assess the effects of the DP on three species of CAM (intercellular cell adhesion molecule-1 (ICAM-1), vascular cell adhesion molecule-1 and endothelial cell selectin (E-selectin)) in participants with mild-moderate hypercholesterolemia. Secondary endpoints included biochemical and hematological variables and clinical effects. Forty participants were randomized to either treatment or control for 12 weeks. Treatment with DP was associated with a statistically significant decrease in ICAM-1 (9% decrease, P = .03) and E-Selectin (15% decrease, P = .004). There was no significant change in renal function tests, liver function tests, glucose, lipids or C-reactive protein levels and clinical adverse effects did not differ between the active and the control groups. There were no relevant changes in participants receiving placebo. These results suggest that this herbal medicine may contribute to the development of a novel approach to cardiovascular risk reduction.
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Affiliation(s)
- Kylie A O'Brien
- Monash University Department of Medicine, Alfred Hospital, Melbourne, Australia
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Endotoxin-activated microglia injure brain derived endothelial cells via NF-κB, JAK-STAT and JNK stress kinase pathways. JOURNAL OF INFLAMMATION-LONDON 2011; 8:7. [PMID: 21385378 PMCID: PMC3061894 DOI: 10.1186/1476-9255-8-7] [Citation(s) in RCA: 147] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Accepted: 03/07/2011] [Indexed: 12/16/2022]
Abstract
Background We previously showed that microglia damage blood brain barrier (BBB) components following ischemic brain insults, but the underlying mechanism(s) is/are not well known. Recent work has established the contribution of toll-like receptor 4 (TLR4) activation to several brain pathologies including ischemia, neurodegeneration and sepsis. The present study established the requirement of microglia for lipopolysaccharide (LPS) mediated endothelial cell death, and explored pathways involved in this toxicity. LPS is a classic TLR4 agonist, and is used here to model aspects of brain conditions where TLR4 stimulation occurs. Methods/Results In monocultures, LPS induced death in microglia, but not brain derived endothelial cells (EC). However, LPS increased EC death when cocultured with microglia. LPS led to nitric oxide (NO) and inducible NO synthase (iNOS) induction in microglia, but not in EC. Inhibiting microglial activation by blocking iNOS and other generators of NO or blocking reactive oxygen species (ROS) also prevented injury in these cocultures. To assess the signaling pathway(s) involved, inhibitors of several downstream TLR-4 activated pathways were studied. Inhibitors of NF-κB, JAK-STAT and JNK/SAPK decreased microglial activation and prevented cell death, although the effect of blocking JNK/SAPK was rather modest. Inhibitors of PI3K, ERK, and p38 MAPK had no effect. Conclusions We show that LPS-activated microglia promote BBB disruption through injury to endothelial cells, and the specific blockade of JAK-STAT, NF-κB may prove to be especially useful anti-inflammatory strategies to confer cerebrovascular protection.
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Gupta SK, Kumar B, Nag TC, Agrawal SS, Agrawal R, Agrawal P, Saxena R, Srivastava S. Curcumin prevents experimental diabetic retinopathy in rats through its hypoglycemic, antioxidant, and anti-inflammatory mechanisms. J Ocul Pharmacol Ther 2011; 27:123-30. [PMID: 21314438 DOI: 10.1089/jop.2010.0123] [Citation(s) in RCA: 129] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
PURPOSE The purpose of this study was to evaluate the therapeutic potential of oral curcumin (1 g/kg body weight of rat) in the prevention and treatment of streptozotocin-induced diabetic retinopathy in Wistar albino rats. METHODS The treatment was carried out for a period of 16 weeks in diabetic rats and evaluated for hyperglycemic, antioxidant (superoxide dismutase, catalase, and glutathione), and inflammatory parameters (tumor necrosis factor-α, vascular endothelial growth factor). Rat fundus was observed weekly to see any visible changes in the retina, such as tortuosity and dilation of retinal vessels. Histological changes were evaluated by transmission electron microscopy. RESULTS Treatment with curcumin showed significant hypoglycemic activity compared with the diabetic group. Retinal glutathione levels were decreased by 1.5-fold, and antioxidant enzymes, superoxide dismutase and catalase, showed >2-fold decrease in activity in the diabetic group; on the other hand, curcumin positively modulated the antioxidant system. Proinflammatory cytokines, tumor necrosis factor-α and vascular endothelial growth factor, were elevated >2-fold in the diabetic retinae, but prevented by curcumin. Transmission electron microscopy showed degeneration of endothelial cell organelles and increase in capillary basement membrane thickness in diabetic retina, but curcumin prevented the structural degeneration and increase in capillary basement membrane thickness in the diabetic rat retinae. CONCLUSION Based on the above results, it may be concluded that curcumin may have potential benefits in the prevention of retinopathy in diabetic patients.
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Affiliation(s)
- Suresh Kumar Gupta
- Department of Pharmacology, Delhi Institute of Pharmaceutical Sciences and Research, University of Delhi, Pushp Vihar Sec-3, New Delhi, India.
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Moon DO, Choi YH, Moon SK, Kim WJ, Kim GY. Gossypol decreases tumor necrosis factor-α-induced intercellular adhesion molecule-1 expression via suppression of NF-κB activity. Food Chem Toxicol 2011; 49:999-1005. [PMID: 21223991 DOI: 10.1016/j.fct.2011.01.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2010] [Revised: 12/07/2010] [Accepted: 01/05/2011] [Indexed: 12/31/2022]
Abstract
Gossypol is a yellowish polyphenolic compound originally from cotton plant, which has been shown to exert a potential for anti-cancer and anti-inflammatory effects. However, its molecular mechanism is not thoroughly understood on breast cancer cells known to highly express intercellular adhesion molecule-1 (ICAM-1) for their adhesion and metastasis. This study aims to investigate the effect of gossypol on tumor necrosis factor (TNF)-α-stimulated ICAM-1 via nuclear factor-kappa B (NF-κB) activity. Gossypol was shown to inhibit TNF-α-induced ICAM-1 expression and U937 cell adhesion to MDA-MB-231 and MCF-7 cells. Additionally, TNF-α-induced MDA-MB-231 cell invasion was blocked in the presence of gossypol. Chromatin immunoprecipitation analysis demonstrated that gossypol blocks NF-κB binding on the ICAM-1 promoter regions. Additionally, TNF-α-induced NF-κB activation was completely suppressed in the presence of gossypol. Gossypol did not directly suppress the binding of NF-κB to the DNA but rather inhibited the nuclear translocation of p65 and p50 via phosphorylation and degradation of IκB. We also found that gossypol suppresses NF-κB activation induced by a wide variety of agents, including taxol, okadaic acid, and phorbol myristate acetate. Taken together, gossypol effectively inhibited TNF-α-induced ICAM-1 expression via the suppression of NF-κB activation and in vitro adhesion and invasion in human breast cancer cells.
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Affiliation(s)
- Dong-Oh Moon
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 690-756, Republic of Korea
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Tiangco DA, Halcomb S, Lattanzio FA, Hargrave BY. 3,4-Methylenedioxymethamphetamine alters left ventricular function and activates nuclear factor-Kappa B (NF-κB) in a time and dose dependent manner. Int J Mol Sci 2010; 11:4843-63. [PMID: 21614177 PMCID: PMC3100831 DOI: 10.3390/ijms11124743] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2010] [Revised: 11/04/2010] [Accepted: 11/08/2010] [Indexed: 11/16/2022] Open
Abstract
3,4-Methylenedioxymethamphetamine (MDMA) is an illicit psychoactive drug with cardiovascular effects that have not been fully described. In the current study, we observed the effects of acute MDMA on rabbit left ventricular function. We also observed the effects of MDMA on nuclear factor-kappa B (NF-κB) activity in cultured rat ventricular myocytes (H9c2). In the rabbit, MDMA (2 mg/kg) alone caused a significant increase in heart rate and a significant decrease in the duration of the cardiac cycle. Inhibition of nitric oxide synthase (NOS) by pretreatment with L-NAME (10 mg/kg) alone caused significant dysfunction in heart rate, systolic pressure, diastolic pressure, duration of relaxation, duration of cardiac cycle, and mean left ventricular pressure. Pretreatment with L-NAME followed by treatment with MDMA caused significant dysfunction in additional parameters that were not abnormal upon exposure to either compound in isolation: duration of contraction, inotropy, and pulse pressure. Exposure to 1.0 mM MDMA for 6 h or 2.0 μM MDMA for 12 h caused increased nuclear localization of NF-κB in cultured H9c2 cells. The current results suggest that MDMA is acutely detrimental to heart function and that an intact cardiovascular NOS system is important to help mitigate early sequelae in some functional parameters. The delayed timing of NF-κB activation suggests that this factor may be relevant to MDMA induced cardiomyopathy of later onset.
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Affiliation(s)
- David A. Tiangco
- Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529, USA
| | - Sapna Halcomb
- Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529, USA
| | - Frank A. Lattanzio
- Department of Physiological Sciences, Eastern Virginia Medical School, Norfolk, VA, 23510, USA
| | - Barbara Y. Hargrave
- Department of Biological Sciences, Old Dominion University, Norfolk, VA 23529, USA
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Elaidic acid sustains LPS and TNF-α induced ICAM-1 and VCAM-I expression on human bone marrow endothelial cells (HBMEC). Clin Biochem 2010; 43:968-72. [DOI: 10.1016/j.clinbiochem.2010.04.066] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Revised: 04/08/2010] [Accepted: 04/20/2010] [Indexed: 11/21/2022]
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Yang CM, Luo SF, Hsieh HL, Chi PL, Lin CC, Wu CC, Hsiao LD. Interleukin-1beta induces ICAM-1 expression enhancing leukocyte adhesion in human rheumatoid arthritis synovial fibroblasts: involvement of ERK, JNK, AP-1, and NF-kappaB. J Cell Physiol 2010; 224:516-26. [PMID: 20432452 DOI: 10.1002/jcp.22153] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Interleukin-1beta (IL-1beta) has been shown to induce the expression of adhesion molecules on various cell types and contributes to inflammatory responses. However, the molecular mechanisms by which IL-1beta induced intercellular adhesion molecule (ICAM)-1 expression remain unclear in human rheumatoid arthritis synovial fibroblasts (RASFs). Here, we demonstrated that IL-1beta induces ICAM-1 gene expression via the de novo protein synthesis through transcription and translation, which is attenuated by pretreatment with actinomycin D and cycloheximide, respectively. IL-1beta-induced ICAM-1 expression, extracellular signal-regulated kinase (ERK) and c-Jun-N-terminal kinase (JNK) phosphorylation, AP-1 activation, and nuclear factor-kappaB (NF-kappaB) p65 translocation were attenuated by the inhibitors of MEK1/2 (U0126), JNK (SP600125), AP-1 (tanshinone IIA), and NF-kappaB (helenalin) or transfection with respective short hairpin RNA plasmids. Moreover, IL-1beta-stimulated NF-kappaB p65 translocation was blocked by helenalin, but not by U0126 or SP600125, revealing that MAPKs and NF-kappaB pathways were independent on these responses. IL-1beta-stimulated AP-1 activation was blocked by U0126 or SP600125, revealing that ERK and JNK linked to AP-1 on these responses. IL-1beta-stimulated ICAM-1 gene expression was attenuated by pretreatment with U0126, SP600125, tanshinone IIA, or helenalin, revealed by ICAM-1 promoter assay and real-time RT-PCR analysis. Finally, up-regulation of ICAM-1 enhanced the adhesion of leukocytes to RASFs exposed to IL-1beta. These results suggest that in human RASFs, activation of ERK, JNK, AP-1, and NF-kappaB are essential for IL-1beta-induced ICAM-1 expression and leukocyte adhesion.
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Affiliation(s)
- Chuen-Mao Yang
- Department of Pharmacology, Chang Gung University, Kwei-San, Tao-Yuan, Taiwan.
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Lisik W, Gong Y, Tejpal N, Skelton TS, Bremer EG, Kloc M, Ghobrial RM. Intragraft gene expression profile associated with the induction of tolerance by allochimeric MHC I in the rat heart transplantation model. Genesis 2010; 48:8-19. [PMID: 19882666 DOI: 10.1002/dvg.20574] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The MHC class I allochimeric protein containing donor-type epitopes on recipient-type heavy chains induces indefinite survival of heterotopic cardiac allografts in rats. We analyzed gene expression profile of heart allograft tissue. Mutated peptide [alpha1h1/u]-RT1.Aa that contains donor-type (Wistar Furth, WF; RT1u) immunogenic epitopes displayed on recipient-type (ACI, RT1a) was delivered into ACI recipients of WF hearts at the time of transplantation in addition to a 3 days course of oral cyclosporine. Microarray analysis was performed using Affymetrix Rat 230 2.0 Microarray. Allochimeric molecule treatment caused upregulation of genes involved in structural integrity of heart muscle, downregulation of IL-1beta a key modulator of the immune response, and downregulation of partitioning defective six homolog gamma PAR6, which is involved in T cell polarity, motility, and ability to scan dendritic cells (DC). These indicate that the immunosuppressive function of allochimeric molecule and/or the establishment of allograft tolerance depend on the induction of genes responsible for the heart tissue integrity, the suppression of cytokine pathway(s), and possibly the impairment of T cells mobility and their DC scanning ability. These novel findings may have important clinical implications for inhibition of chronic rejection in transplant recipients.
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Affiliation(s)
- Wojciech Lisik
- Department of General and Transplantation Surgery, Warsaw Medical University, Warsaw, Poland
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Luo SF, Fang RY, Hsieh HL, Chi PL, Lin CC, Hsiao LD, Wu CC, Wang JS, Yang CM. Involvement of MAPKs and NF-kappaB in tumor necrosis factor alpha-induced vascular cell adhesion molecule 1 expression in human rheumatoid arthritis synovial fibroblasts. ACTA ACUST UNITED AC 2010; 62:105-16. [PMID: 20039412 DOI: 10.1002/art.25060] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To investigate the roles of MAPKs and NF-kappaB in tumor necrosis factor alpha (TNFalpha)-induced expression of vascular cell adhesion molecule 1 (VCAM-1) in human rheumatoid arthritis synovial fibroblasts (RASFs). METHODS Human RASFs were isolated from synovial tissue obtained from patients with RA who underwent knee or hip surgery. The involvement of MAPKs and NF-kappaB in TNFalpha-induced VCAM-1 expression was investigated using pharmacologic inhibitors and transfection with short hairpin RNA (shRNA) and measured using Western blot, reverse transcriptase-polymerase chain reaction, and gene promoter assay. NF-kappaB translocation was determined by Western blot and immunofluorescence staining. The functional activity of VCAM-1 was evaluated by lymphocyte adhesion assay. RESULTS TNFalpha-induced VCAM-1 expression, phosphorylation of p42/p44 MAPK, p38 MAPK, and JNK, and translocation of NF-kappaB were attenuated by the inhibitors of MEK-1/2 (U0126), p38 (SB202190), JNK (SP600125), and NF-kappaB (helenalin) or by transfection with their respective shRNA. TNFalpha-stimulated translocation of NF-kappaB into the nucleus and NF-kappaB promoter activity were blocked by Bay11-7082, but not by U0126, SB202190, or SP600125. VCAM-1 promoter activity was enhanced by TNFalpha in RASFs transfected with VCAM-1-Luc, and this promoter activity was inhibited by Bay11-7082, U0126, SB202190, and SP600125. Moreover, up-regulation of VCAM-1 increased the adhesion of lymphocytes to the RASF monolayer, and this adhesion was attenuated by pretreatment with helenalin, U0126, SP600125, or SB202190 prior to exposure to TNFalpha or by anti-VCAM-1 antibody before the addition of lymphocytes. CONCLUSION In RASFs, TNFalpha-induced VCAM-1 expression is mediated through activation of the p42/p44 MAPK, p38 MAPK, JNK, and NF-kappaB pathways. These results provide new insights into the mechanisms underlying cytokine-initiated joint inflammation in RA and may inspire new targeted therapeutic approaches.
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Affiliation(s)
- Shue-Fen Luo
- Chang Gung University, Chang Gung Memorial Hospital, Kwei-San, Tao-Yuan, Taiwan
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