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Whitehead AK, Fried ND, Li Z, Neelamegam K, Pearson CS, LaPenna KB, Sharp TE, Lefer DJ, Lazartigues E, Gardner JD, Yue X. Alpha7 nicotinic acetylcholine receptor mediates chronic nicotine inhalation-induced cardiopulmonary dysfunction. Clin Sci (Lond) 2022; 136:973-987. [PMID: 35678315 PMCID: PMC10199464 DOI: 10.1042/cs20220083] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 05/27/2022] [Accepted: 06/09/2022] [Indexed: 12/17/2022]
Abstract
Cigarette smoking remains the leading modifiable risk factor for cardiopulmonary diseases; however, the effects of nicotine alone on cardiopulmonary function remain largely unknown. Previously, we have shown that chronic nicotine vapor inhalation in mice leads to the development of pulmonary hypertension (PH) with right ventricular (RV) remodeling. The present study aims to further examine the cardiopulmonary effects of nicotine and the role of the α7 nicotinic acetylcholine receptor (α7-nAChR), which is widely expressed in the cardiovascular system. Wild-type (WT) and α7-nAChR knockout (α7-nAChR-/-) mice were exposed to room air (control) or nicotine vapor daily for 12 weeks. Consistent with our previous study, echocardiography and RV catheterization reveal that male WT mice developed increased RV systolic pressure with RV hypertrophy and dilatation following 12-week nicotine vapor exposure; in contrast, these changes were not observed in male α7-nAChR-/- mice. In addition, chronic nicotine inhalation failed to induce PH and RV remodeling in female mice regardless of genotype. The effects of nicotine on the vasculature were further examined in male mice. Our results show that chronic nicotine inhalation led to impaired acetylcholine-mediated vasodilatory response in both thoracic aortas and pulmonary arteries, and these effects were accompanied by altered endothelial nitric oxide synthase phosphorylation (enhanced inhibitory phosphorylation at threonine 495) and reduced plasma nitrite levels in WT but not α7-nAChR-/- mice. Finally, RNA sequencing revealed up-regulation of multiple inflammatory pathways in thoracic aortas from WT but not α7-nAChR-/- mice. We conclude that the α7-nAChR mediates chronic nicotine inhalation-induced PH, RV remodeling and vascular dysfunction.
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Affiliation(s)
- Anna K. Whitehead
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Nicholas D. Fried
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Zhen Li
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Kandasamy Neelamegam
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Charlotte S. Pearson
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Kyle B. LaPenna
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Thomas E. Sharp
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
- Department of Medicine Section of Cardiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - David J. Lefer
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Eric Lazartigues
- Department of Pharmacology and Experimental Therapeutics, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
- Cardiovascular Center of Excellence, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
- Southeast Louisiana Veterans Health Care Systems, New Orleans, LA 70119, U.S.A
| | - Jason D. Gardner
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
| | - Xinping Yue
- Department of Physiology, Louisiana State University Health Sciences Center, New Orleans, LA 70112, U.S.A
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Cao Y, Chen Z, Jia J, Chen A, Gao Y, Qian J, Ge J. Rosuvastatin Alleviates Coronary Microembolization-Induced Cardiac Injury by Suppressing Nox2-Induced ROS Overproduction and Myocardial Apoptosis. Cardiovasc Toxicol 2022; 22:341-351. [PMID: 34997458 DOI: 10.1007/s12012-021-09716-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/17/2021] [Indexed: 11/30/2022]
Abstract
To explore the mechanism by which rosuvastatin prevents coronary microembolism (CME)-induced cardiac injury and cardiomyocyte apoptosis. Animal and cell models of CME were established and treated with different doses of rosuvastatin. Echocardiography and histological staining were applied to assess left ventricular function and cardiac injury. Masson trichrome staining was used to evaluate fibrin deposition in the myocardium. The activity of lactate dehydrogenase (LDH) in serum and cell culture supernatant was detected. TUNEL staining and flow cytometry were used to evaluate apoptosis in myocardium and cardiomyocytes, respectively. The activity of ROS was revealed by DHE staining. The expression levels of Nox2, cleaved caspase-3, cytochrome C, p53, Bax and Bcl-2 were also detected. Rosuvastatin pretreatment improved the left ventricular function of CME mice and reduced inflammatory cell infiltration and fibrin deposition in the myocardium. Rosuvastatin reduced the production of ROS by inhibiting the expression of Nox2. Rosuvastatin also downregulated pro-apoptotic proteins cleaved caspase-3, cytochrome C, p53 and Bax, and upregulated anti-apoptotic Bcl-2. Rosuvastatin mitigates CME-induced cardiac injury by inhibiting Nox2-induced ROS overproduction and alleviating p53/Bax/Bcl-2-dependent cardiomyocyte apoptosis.
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Affiliation(s)
- Yuanyuan Cao
- Department of Cardiology, The Second Xiangya Hospital, Central South University, Changsha, 410011, Hunan, China
| | - Zhangwei Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Jianguo Jia
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Ao Chen
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Yanhua Gao
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
| | - Juying Qian
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China.
| | - Junbo Ge
- Department of Cardiology, Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, 200032, China
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Jaleel Z, Blasberg E, Troiano C, Montanaro P, Mazzilli S, Gertje HP, Crossland NA, Platt M, Spiegel J. Association of vaping with decreased vascular endothelial growth factor expression and decreased microvessel density in cutaneous wound healing tissue in rats. Wound Repair Regen 2021; 29:1024-1034. [PMID: 34129265 DOI: 10.1111/wrr.12945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 04/13/2021] [Accepted: 05/15/2021] [Indexed: 12/24/2022]
Abstract
Vaping is suggested to be a risk factor for poor wound healing akin to smoking. However, the molecular and histologic mechanisms underlying this postulation remain unknown. Our study sought to compare molecular and histologic changes in cutaneous flap and non-flap tissue between vaping, smoking and control cohorts. Animal study of 15 male Sprague-Dawley rats was randomized to three cohorts: negative control (n = 5), e-cigarette (n = 5) and cigarette (n = 5) and exposed to their respective treatments with serum cotinine monitoring. After 30 days, random pattern flaps were raised and healed for 2 weeks after which skin punch biopsies of flap and non-flap tissues were collected for quantitative-reverse transcription-polymerase chain reaction of three selected wound healing genes (transforming growth factor β [TGF-β], vascular endothelial growth factor [VEGF], matrix metalloproteinase-1 [MMP-1]); then, immunohistochemistry for CD68 expression, α-smooth muscle actin looking at microvessel density (MVD) and in situ hybridization to localize VEGF production were undertaken. In flap tissue, vaping (mean[SEM]) (0.61[0.07]) and smoking (0.70[0.04]) were associated with decreased fold change of VEGF expression compared with controls (0.91[0.03]) (p < 0.05, p < 0.05, respectively). In non-flap tissue, only vaping was associated with decreased VEGF expression (mean[SEM]) (0.81[0.07]), compared with controls (1.17[0.10]) (p < 0.05) with expression primarily localized to basal keratinocytes and dermal capillaries. Immunohistochemistry showed decreased MVD in smoking (0.27[0.06]) and vaping (0.26[0.04]) flap tissue compared to matched controls (0.65[0.14]) (p < 0.05, p < 0.05, respectively) and decreased areas of fibrosis compared with controls on gross histology. Vaping and smoking were similarly associated with decreased VEGF expression, MVD and fibrotic changes in flap tissue. The results suggest attenuated angiogenesis via decreased VEGF expression as a mechanism for poor wound healing in vaping-exposed rats.
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Affiliation(s)
- Zaroug Jaleel
- Boston University School of Medicine, Boston, Massachusetts, USA
| | - Elizabeth Blasberg
- Department of Otolaryngology/Head and Neck Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Chelsea Troiano
- Department of Otolaryngology/Head and Neck Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Paige Montanaro
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Sarah Mazzilli
- Boston University School of Medicine, Boston, Massachusetts, USA
| | - Hans Peter Gertje
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Nicholas A Crossland
- Department of Pathology and Laboratory Medicine, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Michael Platt
- Boston University School of Medicine, Boston, Massachusetts, USA.,Department of Otolaryngology/Head and Neck Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
| | - Jeffrey Spiegel
- Boston University School of Medicine, Boston, Massachusetts, USA.,Department of Otolaryngology/Head and Neck Surgery, Boston Medical Center, Boston University School of Medicine, Boston, Massachusetts, USA
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Gong J, Feng Z, Peterson AL, Carr JF, Lu X, Zhao H, Ji X, Zhao YY, De Paepe ME, Dennery PA, Yao H. The pentose phosphate pathway mediates hyperoxia-induced lung vascular dysgenesis and alveolar simplification in neonates. JCI Insight 2021; 6:137594. [PMID: 33497360 PMCID: PMC8021105 DOI: 10.1172/jci.insight.137594] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Accepted: 01/20/2021] [Indexed: 01/02/2023] Open
Abstract
Dysmorphic pulmonary vascular growth and abnormal endothelial cell (EC) proliferation are paradoxically observed in premature infants with bronchopulmonary dysplasia (BPD), despite vascular pruning. The pentose phosphate pathway (PPP), a metabolic pathway parallel to glycolysis, generates NADPH as a reducing equivalent and ribose 5-phosphate for nucleotide synthesis. It is unknown whether hyperoxia, a known mediator of BPD in rodent models, alters glycolysis and the PPP in lung ECs. We hypothesized that hyperoxia increases glycolysis and the PPP, resulting in abnormal EC proliferation and dysmorphic angiogenesis in neonatal mice. To test this hypothesis, lung ECs and newborn mice were exposed to hyperoxia and allowed to recover in air. Hyperoxia increased glycolysis and the PPP. Increased PPP, but not glycolysis, caused hyperoxia-induced abnormal EC proliferation. Blocking the PPP reduced hyperoxia-induced glucose-derived deoxynucleotide synthesis in cultured ECs. In neonatal mice, hyperoxia-induced abnormal EC proliferation, dysmorphic angiogenesis, and alveolar simplification were augmented by nanoparticle-mediated endothelial overexpression of phosphogluconate dehydrogenase, the second enzyme in the PPP. These effects were attenuated by inhibitors of the PPP. Neonatal hyperoxia augments the PPP, causing abnormal lung EC proliferation, dysmorphic vascular development, and alveolar simplification. These observations provide mechanisms and potential metabolic targets to prevent BPD-associated vascular dysgenesis.
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Affiliation(s)
- Jiannan Gong
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
- Department of Respiratory and Critical Care Medicine, Second Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zihang Feng
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Abigail L. Peterson
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Jennifer F. Carr
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Xuexin Lu
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Haifeng Zhao
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
| | - Xiangming Ji
- Department of Nutrition, Byrdine F. Lewis School of Nursing and Health Professions, Georgia State University, Atlanta, Georgia, USA
| | - You-Yang Zhao
- Program for Lung and Vascular Biology, Stanley Manne Children’s Research Institute, Ann & Robert H. Lurie Children’s Hospital of Chicago, Chicago, Illinois, USA
- Departments of Pediatrics (Critical Care Division), Pharmacology, and Medicine (Pulmonary and Critical Care Medicine), Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Monique E. De Paepe
- Department of Pathology, Women and Infants Hospital, Providence, Rhode Island, USA
| | - Phyllis A. Dennery
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
- Department of Pediatrics, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Hongwei Yao
- Department of Molecular Biology, Cell Biology & Biochemistry, Division of Biology and Medicine, Brown University, Providence, Rhode Island, USA
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Oxidative Stress and New Pathogenetic Mechanisms in Endothelial Dysfunction: Potential Diagnostic Biomarkers and Therapeutic Targets. J Clin Med 2020; 9:jcm9061995. [PMID: 32630452 PMCID: PMC7355625 DOI: 10.3390/jcm9061995] [Citation(s) in RCA: 64] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 06/15/2020] [Accepted: 06/23/2020] [Indexed: 02/07/2023] Open
Abstract
Cardiovascular diseases (CVD), including heart and pathological circulatory conditions, are the world's leading cause of mortality and morbidity. Endothelial dysfunction involved in CVD pathogenesis is a trigger, or consequence, of oxidative stress and inflammation. Endothelial dysfunction is defined as a diminished production/availability of nitric oxide, with or without an imbalance between endothelium-derived contracting, and relaxing factors associated with a pro-inflammatory and prothrombotic status. Endothelial dysfunction-induced phenotypic changes include up-regulated expression of adhesion molecules and increased chemokine secretion, leukocyte adherence, cell permeability, low-density lipoprotein oxidation, platelet activation, and vascular smooth muscle cell proliferation and migration. Inflammation-induced oxidative stress results in an increased accumulation of reactive oxygen species (ROS), mainly derived from mitochondria. Excessive ROS production causes oxidation of macromolecules inducing cell apoptosis mediated by cytochrome-c release. Oxidation of mitochondrial cardiolipin loosens cytochrome-c binding, thus, favoring its cytosolic release and activation of the apoptotic cascade. Oxidative stress increases vascular permeability, promotes leukocyte adhesion, and induces alterations in endothelial signal transduction and redox-regulated transcription factors. Identification of new endothelial dysfunction-related oxidative stress markers represents a research goal for better prevention and therapy of CVD. New-generation therapeutic approaches based on carriers, gene therapy, cardiolipin stabilizer, and enzyme inhibitors have proved useful in clinical practice to counteract endothelial dysfunction. Experimental studies are in continuous development to discover new personalized treatments. Gene regulatory mechanisms, implicated in endothelial dysfunction, represent potential new targets for developing drugs able to prevent and counteract CVD-related endothelial dysfunction. Nevertheless, many challenges remain to overcome before these technologies and personalized therapeutic strategies can be used in CVD management.
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Smoking-Induced Inhibition of Number and Activity of Endothelial Progenitor Cells and Nitric Oxide in Males Were Reversed by Estradiol in Premenopausal Females. Cardiol Res Pract 2020; 2020:9352518. [PMID: 32455001 PMCID: PMC7240658 DOI: 10.1155/2020/9352518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Accepted: 04/09/2020] [Indexed: 02/07/2023] Open
Abstract
Objectives The number and activity of circulating EPCs were enhanced in premenopausal women contrast to postmenopausal females and age-matched males. Here, we investigated whether this favorable effect exists in premenopausal women and age-matched men with cigarette smoking. Methods In a cross-sectional study, the number and activity of circulating EPCs and nitric oxide production (NO) as well as flow-mediated vasodilation (FMD) in both premenopausal women and age-matched men with or without cigarette smoking were studied. Results Compared with age-matched men with or without smoking, the number and function of circulating EPCs as well as NO level in premenopausal women were obviously higher than that in the former and not affected by smoking. The number and function of circulating EPCs as well as NO level in male smokers were shown to be the most strongly inhibited. Furthermore, there was significant correlation between EPC number and activity, plasma NO level, and NO secretion by EPCs and FMD. Conclusions Estradiol was deemed to play an important role in enhancing the number and activity of EPCs and NO production in premenopausal women even when affected by smoking, which may be the important mechanisms underlying vascular protection of estradiol in premenopausal women, but not in age-matched men.
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Abstract
Chronic obstructive pulmonary disease (COPD) is a common and progressive disorder
which is characterised by pathological abnormalities driven by chronic airway inflammation. The
assessment of airway inflammation in routine clinical practice in COPD is limited to surrogate blood
markers. Fractional exhaled nitric oxide (FENO) is a marker of eosinophilic airway inflammation in
asthma, and it can predict steroid responsiveness and help tailor corticosteroid treatment. The clinical
value of FENO in COPD is less evident, but some studies suggest that it may be a marker of the
eosinophilic endotype. More importantly, mathematical methods allow investigation of the
alveolar/small airway production of NO which potentially better reflects inflammatory changes in
anatomical sites, most affected by COPD. This review summarises the pathophysiological role of
nitric oxide in COPD, explains the methodology of its measurement in exhaled air and discusses
clinical findings of FENO in COPD.
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Affiliation(s)
- Andras Bikov
- NIHR Manchester Clinical Research Facility, Manchester University NHS Foundation Trust, Manchester, United Kingdom
| | - Martina Meszaros
- Department of Pulmonology, Semmelweis University, Budapest, Hungary
| | - Zsofia Lazar
- Department of Pulmonology, Semmelweis University, Budapest, Hungary
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Chen S, Wu H, Yang T, Li B, Hu Y, Sun H. Does Early Graft Patency Benefit from Perioperative Statin Therapy? A Propensity Score-Matched Study of Patients Undergoing Off-Pump Coronary Artery Bypass Surgery. Cardiovasc Ther 2019; 2019:1582183. [PMID: 31772605 PMCID: PMC6739783 DOI: 10.1155/2019/1582183] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/01/2019] [Accepted: 07/21/2019] [Indexed: 11/23/2022] Open
Abstract
BACKGROUND Decreased graft patency after off-pump coronary artery bypass grafting (OPCAB) leads to substantial increases in cardiac events. However, there is paucity of data on efficacy and safety of perioperative statin therapy for OPCAB populations. METHODS 582 patients undergoing OPCAB in a single-institution database (October 1, 2009-September 30, 2012) were stratified by perioperative continuation of statin therapy (CS group, n=398) or not (DS group, n=184). Inverse probability weighted propensity adjustment was used to account for treatment assignment bias, resulting in a well-matched cohort. Primary outcomes were graft patency at an average of five days after operation and in-hospital mortality. Secondary outcomes included intraoperative blood loss, liver, and renal functions. RESULTS No in-hospital death occurred in this study. Early graft patency rates after OPCAB were 98.4% (1255 of 1275 grafts) in the CS group and 98.0% (583 of 595 grafts, P=0.486) in the DS group. Secondary outcomes showed a reduction in blood loss during operation (438.53 mL versus 480.47 mL, P=0.01). Continuation of statin therapy is associated with alanine transaminase (ALT) elevation (49.67 U/L versus 34.52 U/L, P<0.001), as well as aspartate transaminase (33.54 U/L versus 28.10 U/L, P<0.001). Abnormal ALT elevation was observed in 8.9% of the CS group and 3.1% in DS (odds ratio 3.06, 95% confidence interval, 1.77 to 5.29, P<0.001). There was no significant difference in estimated glomerular filtration rate (76.28 mL/min/1.73m2 versus 76.13 mL/min/1.73m2, P=0.90). Subgroup analyses suggested that graft occlusion was less common in CS than in DS group among smoking patients (odds ratio 0.41, 95% confidence interval, 0.20 to 0.86, P=0.026). CONCLUSIONS Perioperative continuation of statin therapy did not improve early graft patency in OPCAB patients. A lower risk of graft occlusion was observed among smoking patients. Continuous statin use correlated with liver function elevation (Clinical Trials.gov number, NCT01268917).
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Affiliation(s)
- Shanglin Chen
- Department of Cardiac Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Hengchao Wu
- Department of Cardiac Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Tao Yang
- Department of Cardiac Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Baotong Li
- Department of Cardiac Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Yuanyu Hu
- Department of Cardiac Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
| | - Hansong Sun
- Department of Cardiac Surgery, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100037, China
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Kim SH, Park JW. Morin hydrate attenuates CSE-induced lipid accumulation, ER stress, and oxidative stress in RPE cells: implications for age-related macular degeneration. Free Radic Res 2019; 53:865-874. [PMID: 31257945 DOI: 10.1080/10715762.2019.1637862] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 06/13/2019] [Accepted: 06/17/2019] [Indexed: 01/19/2023]
Abstract
Oxidative stress has a key role in the pathogenesis of age-related macular degeneration (AMD). Cigarette smoking is known to the one of the main risk factors of AMD through oxidative stress-mediated endoplasmic reticulum (ER) stress and lipid accumulation in human retinal pigment epithelium (RPE) cells. A number of studies have investigated the benefits of antioxidants in the AMD. However, previous studies have not shown that efficacy of antioxidant in the treatment of AMD. Recent studies demonstrated that morin hydrate (MH) has antioxidant properties, anti-inflammatory, and antiapoptosis effects, however, the protective effects of MH against cigarette smoke extract (CSE)-induced AMD have not been studied in detail. We tested the potential effect of MH against the CSE-induced lipid accumulation in RPE cells and mice RPE layer. Herein, we observed that expose of RPE cells to CSE reduced cell viability, increased the lipid accumulation, ER stress, and oxidative stress. Concomitantly, CSE treatment to mice induced AMD associated histopathological changes, lipid accumulation, ER stress and oxidative stress in RPE layer. MH significantly attenuated cytotoxicity, lipid accumulation, ER stress, and oxidative stress via activated AMPK-Nrf2 signaling pathway in RPE cells and mice RPE layer. In addition, AMPK inhibition reversed MH-induced RPE cell protection against CSE. Thus, we conclude that MH protects RPE cells from CSE through reduced oxidative stress, ER stress, and lipid accumulation via activated AMPK-Nrf2-HO-1 signaling pathway. These findings suggest that MH treatment may be exploited in effective strategy against CSE-induced AMD.
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Affiliation(s)
- Sung Hwan Kim
- School of Life Sciences and Biotechnology, BK21 Plus KNU Creative BioResearch Group, College of Natural Sciences, Kyungpook National University , Daegu , Korea
| | - Jeen-Woo Park
- School of Life Sciences and Biotechnology, BK21 Plus KNU Creative BioResearch Group, College of Natural Sciences, Kyungpook National University , Daegu , Korea
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Zhang X, Lu A, Li Z, Sun J, Dai D, Qian L. Exosomes secreted by endothelial progenitor cells improve the bioactivity of pulmonary microvascular endothelial cells exposed to hyperoxia in vitro. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:254. [PMID: 31355221 DOI: 10.21037/atm.2019.05.10] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background Paracrine factors secreted by endothelial progenitor cells (EPCs) are suggested to be responsible, in part, for the improved microvascular development in bronchopulmonary dysplasia (BPD) models. This study aims to investigate the potential role of exosomes derived from EPCs (EPC-EXOs), a component of paracrine secretion, in angiogenesis by mediating the activity of PMVECs exposed to hyperoxia. Methods EPCs were isolated from bone marrow of rats. EPC-EXOs were isolated by ExoQuick-TC kits from the conditioned media of EPCs. The PMVECs were divided into three groups, including the normal group, the hyperoxia group (exposed to 85% O2) and the EPC-EXOs treatment group (exposed to 85% O2 and EPC-EXOs with the concentration of 100 µg/mL). The activities of proliferation, migration and tube formation of PMVECs were detected at the endpoint. The mRNA and protein expression levels of VEGF, VEGFR2 and eNOS in different groups were detected by real-time quantitative PCR and western blot. Results We found EPC-EXOs exhibited a cup or biconcave morphology, with the size ranging from 30 to 150 nm, and positive for the characteristic exosomal surface marker proteins, CD63 and TSG101. Comparing to the control group, Hyperoxic stress impaired the proliferation, migration, and tubule formation of PMVECs, and decreased the expression of endothelial nitric oxide synthase (eNOS), vascular endothelial growth factor (VEGF), and vascular endothelial growth factor receptor 2 (VEGFR-2) of PMVECs. Comparing to the hyperoxia group, EPC-EXOs treatment enhanced the bioactivity of PMVECs in vitro, and increased the expression of eNOS, VEGF and VEGFR2. Conclusions Our data demonstrate EPCs secrete exosomes that have independent angiogenic activity in vitro. This may help explain in part the protective effects of EPCs on hyperoxic injury in the developing lung vasculature and may represent a promising therapeutic strategy for BPD.
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Affiliation(s)
- Xiaomei Zhang
- Respiratory Department, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Aizhen Lu
- Respiratory Department, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Zhi Li
- The Children's Hospital of Zhejiang University, School of Medicine, Hangzhou 310052, China
| | - Jiali Sun
- Respiratory Department, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Dan Dai
- Respiratory Department, Children's Hospital of Fudan University, Shanghai 201102, China
| | - Liling Qian
- Respiratory Department, Children's Hospital of Fudan University, Shanghai 201102, China
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3D-QSAR and molecular docking studies of aminopyrimidine derivatives as novel three-targeted Lck/Src/KDR inhibitors. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2019.02.071] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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12
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Güzel EE, Kaya N, Kocamüftüoğlu GO, Kısaçam MA, Dabak DÖ, Ozan İE. Gebelikte Tütün Dumanı Maruziyetinin Anne Sıçan Akciğer Dokusunda Meydana Getirdiği Değişiklikler Üzerine Alfa Lipoik Asitin Etkilerinin İncelenmesi. DICLE MEDICAL JOURNAL 2018. [DOI: 10.5798/dicletip.457249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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13
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Jing Y, Wang G, Xiao Q, Zhou Y, Wei Y, Gong Z. Antiangiogenic effects of AA-PMe on HUVECs in vitro and zebrafish in vivo. Onco Targets Ther 2018; 11:1871-1884. [PMID: 29670362 PMCID: PMC5894717 DOI: 10.2147/ott.s157747] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
Angiogenesis plays a vital role in many physiological and pathological processes and several diseases are connected with its dysregulation. Asiatic acid (AA) has demonstrated anticancer properties and we suspect this might be attributable to an effect on angio-genesis. A modified derivative of AA, N-(2α,3β,23-acetoxyurs-12-en-28-oyl)-L-proline methyl ester (AA-PMe), has improved efficacy over its parent compound, but its effect on blood vessel development remains unclear. Methods In this study, we investigated the antiangiogenic activity of AA and AA-PMe in zebrafish embryos and human umbilical vein endothelial cells (HUVECs). First of all, we treated HUVECs with increasing concentrations of AA-PMe or AA, with or without vascular endothelial growth factor (VEGF) present, and assessed cell viability, tube formation, and cell migration and invasion. Quantitative real-time polymerase chain reaction and Western blot analysis were later used to determine the role of vascular endothelial growth factor receptor 2 (VEGFR2)-mediated signaling in AA-PMe inhibition of angiogenesis. We extended these studies to follow angiogenesis using Tg(fli:EGFP) transgenic zebrafish embryos. For these experiments, embryos were treated with varying concentrations of AA-PMe or AA from 24 to 72 hours postfertilization prior to morphological observation, angiogenesis assessment, and endogenous alkaline phosphatase assay. VEGFR2 expression in whole embryos following AA-PMe treatment was also determined. Results We found AA-PMe decreased cell viability and inhibited migration and tube formation in a dose-dependent manner in HUVECs. Similarly, AA-PMe disrupted the formation of intersegmental vessels, the dorsal aorta, and the posterior cardinal vein in zebrafish embryos. Both in vitro and in vivo AA-PMe surpassed AA in its ability to block angiogenesis by suppressing VEGF-induced phosphorylation of VEGFR2 and disrupting downstream extracellular regulated protein kinase and AKT signaling. Conclusion For the first time, this study reveals that AA-PMe acts as a potent VEGFR2 kinase inhibitor and exerts powerful antiangiogenic activity, suggesting it to be a promising therapeutic candidate for further research.
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Affiliation(s)
- Yue Jing
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, China.,Central Laboratory of Stomatology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Gang Wang
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Qi Xiao
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Yachun Zhou
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, China
| | - Yingjie Wei
- Key Laboratory of Oral Drug Delivery System of Chinese Materia Medica of State Administration of Traditional Chinese Medicine, Jiangsu Branch of China Academy of Chinese Medical Science, Nanjing, China
| | - Zhunan Gong
- Center for New Drug Research and Development, College of Life Science, Nanjing Normal University, Nanjing, China
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14
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Neves KB, Rios FJ, van der Mey L, Alves-Lopes R, Cameron AC, Volpe M, Montezano AC, Savoia C, Touyz RM. VEGFR (Vascular Endothelial Growth Factor Receptor) Inhibition Induces Cardiovascular Damage via Redox-Sensitive Processes. Hypertension 2018; 71:638-647. [DOI: 10.1161/hypertensionaha.117.10490] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 11/07/2017] [Accepted: 01/23/2018] [Indexed: 12/12/2022]
Abstract
Although VEGF (vascular endothelial growth factor) inhibitors (VEGFIs), are effective anticancer therapies, they cause hypertension through unknown mechanisms. We questioned whether changes in vascular redox state may be important, because VEGF signaling involves nitric oxide (NO) and reactive oxygen species. Molecular mechanisms, including NOS, NADPH oxidase (Nox)–derived reactive oxygen species, antioxidant systems, and vasoconstrictor signaling pathways, were probed in human endothelial cells and vascular smooth muscle exposed to vatalanib, a VEGFI. Vascular functional effects of VEGFI were assessed ex vivo in mouse arteries. Cardiovascular and renal in vivo effects were studied in vatalanib- or gefitinib (EGFI [epidermal growth factor inhibitor])-treated mice. In endothelial cells, vatalanib decreased eNOS (Ser
1177
) phosphorylation and reduced NO and H
2
O
2
production, responses associated with increased Nox-derived O
2
−
and ONOO
−
formation. Inhibition of Nox1/4 (GKT137831) or Nox1 (NoxA1ds), prevented vatalanib-induced effects. Nrf-2 (nuclear factor erythroid 2–related factor 2) nuclear translocation and expression of Nrf-2–regulated antioxidant enzymes were variably downregulated by vatalanib. In human vascular smooth muscles, VEGFI increased Nox activity and stimulated Ca
2+
influx and MLC
20
phosphorylation. Acetylcholine-induced vasodilatation was impaired and U46619-induced vasoconstriction was enhanced by vatalanib, effects normalized by N-acetyl-cysteine and worsened by L-NAME. In vatalanib-, but not gefitinib-treated mice vasorelaxation was reduced and media:lumen ratio of mesenteric arteries was increased with associated increased cardiovascular and renal oxidative stress, decreased Nrf-2 activity and downregulation of antioxidant genes. We demonstrate that inhibition of VEGF signaling induces vascular dysfunction through redox-sensitive processes. Our findings identify Noxs and antioxidant enzymes as novel targets underling VEGFI-induced vascular dysfunction. These molecular processes may contribute to vascular toxicity and hypertension in VEGFI-treated patients.
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Affiliation(s)
- Karla B. Neves
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Francisco J. Rios
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Lucas van der Mey
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Rheure Alves-Lopes
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Alan C. Cameron
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Massimo Volpe
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Augusto C. Montezano
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Carmine Savoia
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
| | - Rhian M. Touyz
- From the BHF Glasgow Cardiovascular Research Centre, Institute of Cardiovascular and Medical Sciences, University of Glasgow, United Kingdom (K.B.N., F.J.R., L.v.d.M., R.A.-L., A.C.C., A.C.M., R.M.T.); Department of Clinical and Molecular Medicine, Cardiology Unit Sant’Andrea Hospital, Sapienza University of Rome, Italy (M.V., C.S.); and Department of AngioCardioNeurology and Translational Medicine, IRCCS Neuromed - Mediterranean Neurological Institute, Pozzilli, Italy (M.V.)
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15
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Marques P, Collado A, Escudero P, Rius C, González C, Servera E, Piqueras L, Sanz MJ. Cigarette Smoke Increases Endothelial CXCL16-Leukocyte CXCR6 Adhesion In Vitro and In Vivo. Potential Consequences in Chronic Obstructive Pulmonary Disease. Front Immunol 2017; 8:1766. [PMID: 29326688 PMCID: PMC5733535 DOI: 10.3389/fimmu.2017.01766] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 11/27/2017] [Indexed: 01/08/2023] Open
Abstract
Cardiovascular disease (CVD) is a major comorbidity in chronic obstructive pulmonary disease (COPD). Although the mechanism of its development remains largely unknown, it appears to be associated with cigarette consumption and reduced lung function. Therefore, the aim of this study was to investigate the potential link between water-soluble cigarette smoke extract (CSE)-induced endothelial dysfunction and the function of CXCL16/CXCR6 axis on the initial attachment of leukocytes, in addition to its possible impact on COPD-associated systemic inflammation. To do this, we employed several experimental approaches, including RNA silencing and flow cytometry analysis, the dynamic flow chamber technique, and intravital microscopy in the cremasteric arterioles of animals exposed to cigarette smoke (CS). CSE-induced arterial CXCL16 expression, leading to increased platelet–leukocyte and mononuclear cell adhesiveness. CSE-induced CXCL16 expression was dependent on Nox5 expression and subsequent RhoA/p38 MAPK/NF-κB activation. Flow cytometry analysis revealed that COPD patients (n = 35) presented greater numbers of activated circulating platelets (PAC-1+ and P-selectin+) expressing CXCL16 and CXCR6 as compared with age-matched controls (n = 17), with a higher number of CXCR6+-platelets in the smoking COPD group than in ex-smokers. This correlated with enhanced circulating CXCR6+-platelet–leukocyte aggregates in COPD patients. The increase in circulating numbers of CXCR6-expressing platelets and mononuclear cells resulted in enhanced platelet–leukocyte and leukocyte adhesiveness to CSE-stimulated arterial endothelium, which was greater than that found in age-matched controls and was partly dependent on endothelial CXCL16 upregulation. Furthermore, CS exposure provoked CXCL16-dependent leukocyte–arteriolar adhesion in cremasteric arterioles, which was significantly reduced in animals with a nonfunctional CXCR6 receptor. In conclusion, we provide the first evidence that increased numbers of CXCR6-expressing circulating platelets and mononuclear leukocytes from patients with COPD might be a marker of systemic inflammation with potential consequences in CVD development. Accordingly, CXCL16/CXCR6 axis blockade might constitute a new therapeutic approach for decreasing the risk of CVD in COPD patients.
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Affiliation(s)
- Patrice Marques
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University Clinic Hospital of Valencia, Valencia, Spain
| | - Aida Collado
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
| | - Paula Escudero
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University Clinic Hospital of Valencia, Valencia, Spain
| | - Cristina Rius
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University Clinic Hospital of Valencia, Valencia, Spain
| | - Cruz González
- Institute of Health Research INCLIVA, University Clinic Hospital of Valencia, Valencia, Spain.,Neumology Unit, University Clinic Hospital of Valencia, Valencia, Spain
| | - Emilio Servera
- Institute of Health Research INCLIVA, University Clinic Hospital of Valencia, Valencia, Spain.,Neumology Unit, University Clinic Hospital of Valencia, Valencia, Spain
| | - Laura Piqueras
- Institute of Health Research INCLIVA, University Clinic Hospital of Valencia, Valencia, Spain
| | - Maria-Jesus Sanz
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain.,Institute of Health Research INCLIVA, University Clinic Hospital of Valencia, Valencia, Spain
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16
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Ursoniu S, Mikhailidis DP, Serban MC, Penson P, Toth PP, Ridker PM, Ray KK, Kees Hovingh G, Kastelein JJ, Hernandez AV, Manson JE, Rysz J, Banach M. The effect of statins on cardiovascular outcomes by smoking status: A systematic review and meta-analysis of randomized controlled trials. Pharmacol Res 2017; 122:105-117. [PMID: 28602797 DOI: 10.1016/j.phrs.2017.06.002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2017] [Revised: 06/05/2017] [Accepted: 06/06/2017] [Indexed: 01/03/2023]
Abstract
Smoking is an important risk factor for cardiovascular disease (CVD) morbidity and mortality. The impact of statin therapy on CVD risk by smoking status has not been fully investigated. Therefore we assessed the impact of statin therapy on CVD outcomes by smoking status through a systematic review of the literature and meta-analysis of available randomized controlled trials (RCTs). The literature search included EMBASE, ProQuest, CINAHL and PUBMED databases to 30 January 2016 to identify RCTs that investigated the effect of statin therapy on cumulative incidence of major CVD endpoints (e.g. non-fatal myocardial infarction, revascularization, unstable angina, and stroke). Relative risks (RR) ratios were calculated from the number of events in different treatment groups for both smokers and non-smokers. Finally 11 trials with 89,604 individuals were included. The number of smokers and non-smokers in the statin groups of the analyzed studies was 8826 and 36,090, respectively. The RR for major CV events was 0.73 (95% confidence interval [CI]: 0.67-0.81; p<0.001) in nonsmokers and 0.72 (95%CI: 0.64-0.81; p<0.001) in smokers. Moderate to high heterogeneity was observed both in non-smokers (I2=77.1%, p<0.001) and in smokers (I2=51.6%, p=0.024) groups. Smokers seemed to benefit slightly more from statins than non-smokers according to the number needed to treat (NNT) analysis (23.5 vs 26.8) based on RRs applied to the control event rates. The number of avoided events per 1000 individuals was 42.5 (95%CI: 28.9-54.6) in smokers and 37.3 (95%CI: 27.2-46.4) in non-smokers. In conclusion, this meta-analysis suggests that the effect of statins on CVD is similar for smokers and non-smokers, but in terms of NNTs and number of avoided events, smokers seem to benefit more although non-significantly.
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Affiliation(s)
- Sorin Ursoniu
- Department of Functional Sciences, Discipline of Public Health, "Victor Babes" University of Medicine and Pharmacy, Timisoara, Romania
| | - Dimitri P Mikhailidis
- Department of Clinical Biochemistry, Royal Free Campus, University College London Medical School, University College London (UCL), London, UK
| | - Maria-Corina Serban
- Department of Epidemiology, University of Alabama at Birmingham, Birmingham, AL, USA; Department of Functional Sciences, Discipline of Pathophysiology, "Victor Babes" University of Medicine and Pharmacy, Timisoara, Romania
| | - Peter Penson
- School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Liverpool, UK
| | - Peter P Toth
- Preventive Cardiology, CGH Medical Center, Sterling, Illinois, USA; The Johns Hopkins Ciccarone Center for the Prevention of Heart Disease, Baltimore, MD, USA
| | - Paul M Ridker
- Center for Cardiovascular Disease Prevention, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA
| | - Kausik K Ray
- Department of Primary Care and Public Health, School of Public Health, Imperial College London, UK
| | - G Kees Hovingh
- Department of Vascular Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - John J Kastelein
- Department of Vascular Medicine, Academic Medical Center, Amsterdam, The Netherlands
| | - Adrian V Hernandez
- Health Outcomes and Clinical Epidemiology Section, Department of Quantitative Health Sciences, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA; School of Medicine, Universidad Peruana de Ciencias Aplicadas (UPC), Lima, Peru
| | - JoAnn E Manson
- Division of Preventive Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA, USA; Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Jacek Rysz
- Department of Hypertension, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland
| | - Maciej Banach
- Department of Hypertension, Chair of Nephrology and Hypertension, Medical University of Lodz, Poland; Cardiovascular Research Centre, University of Zielona Gora, Zielona Gora, Poland; Polish Mother's Memorial Hospital Research Institute, Lodz, Poland.
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17
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Camargo RCT, Costalonga RR, Louzada MJQ, Fernandes RA, Camargo Filho JCS, Urban JB. THE INFLUENCE OF PASSIVE TOBACCO EXPOSURE AND PHYSICAL EXERCISE ON BONE TISSUE OF YOUNG RATS. ACTA ORTOPEDICA BRASILEIRA 2017. [PMID: 28642655 PMCID: PMC5474417 DOI: 10.1590/1413-785220172502130777] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVE The objective of this study is to investigate the effect of passive smoking during pregnancy and associated with swimming on bone area growth, bone mineral density (BMD), and bone mineral content (BMC). METHODS The offspring was grouped by control matrices (G1) and passive smokers (G2). The offspring was regrouped in eight subgroups, with exposure to smoking (2x/day) and physical exercise (1 session/day), respecting the group of matrices in: sedentary control (G1CS and G2CS), swimming control (G1CN and G2CN), sedentary passive smoker (G1FS and G2FS), and passive smoker swimmer (G1FN and G2FN). The area, BMD and BMC were measured by the tibia and femur and analyzed by densitometer. The results were analyzed by One-Way ANOVA test with Tukey post-test, with a significance level of 5%. RESULTS In the tibia BMC study, a better rate was observed in G2CN group when compared to G1CS, G1CN and G1FN (p ≤ 0.023). When assessing BMD in the femur, a higher density ratio was observed in G1FS group when compared to G2CS, G2CN, G2FS and G2FN (p<0.008). In the tibia study, the animals of the G1FS group had higher rates when compared to G2CS and G2FN groups (p≤0.007). CONCLUSIONS The model of male offspring exposed to passive smoking during fetal development showed a strong decrease in the analyzed parameters. Level of Evidence I, Randomized High Quality Clinical Trial With or Without Statistically Significant Difference, But Narrow Confidence Intervals.
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18
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Spinelli SL, Lannan KL, Loelius SG, Phipps RP. In Vitro and Ex Vivo Approaches to Evaluate Next-Generation Tobacco and Non-Tobacco Products on Human Blood Platelets. ACTA ACUST UNITED AC 2017; 3:110-120. [PMID: 28337466 PMCID: PMC5338183 DOI: 10.1089/aivt.2016.0034] [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] [Indexed: 12/13/2022]
Abstract
Human blood platelets are major hemostatic regulators in the circulation and important in the mediation of chronic inflammation and immunomodulation. They are key elements that promote cardiovascular pathogenesis that leads to atherosclerosis, thrombosis, myocardial infarction, and stroke. New information on tobacco use and platelet dysregulation shows that these highly understudied vascular cells are dysregulated by tobacco smoke. Thus, platelet function studies should be an important consideration for the evaluation of existing and next-generation tobacco and non-tobacco products. Novel in vitro approaches are being sought to investigate these products and their influence on platelet function. Platelets are ideally suited for product assessment, as robust and novel in vitro translational methods are available to assess platelet function. Furthermore, the use of human biological systems has the advantage that risk predictions will better reflect the human condition.
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Affiliation(s)
- Sherry L Spinelli
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry , Rochester, New York
| | - Katie L Lannan
- Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry , Rochester, New York
| | - Shannon G Loelius
- Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry , Rochester, New York
| | - Richard P Phipps
- Department of Pathology and Laboratory Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York.; Department of Environmental Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York.; Department of Microbiology and Immunology, University of Rochester School of Medicine and Dentistry, Rochester, New York
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19
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Kovacs L, Su Y. Redox-Dependent Calpain Signaling in Airway and Pulmonary Vascular Remodeling in COPD. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 967:139-160. [PMID: 29047085 PMCID: PMC7036267 DOI: 10.1007/978-3-319-63245-2_9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The calcium-dependent cytosolic, neutral, thiol endopeptidases, calpains, perform limited cleavage of their substrates thereby irreversibly changing their functions. Calpains have been shown to be involved in several physiological processes such as cell motility, proliferation, cell cycle, signal transduction, and apoptosis. Overactivation of calpain or mutations in the calpain genes contribute to a number of pathological conditions including neurodegenerative disorders, rheumatoid arthritis, cancer, and lung diseases. High concentrations of reactive oxygen and nitrogen species (RONS) originated from cigarette smoke or released by numerous cell types such as activated inflammatory cells and other respiratory cells cause oxidative and nitrosative stress contributing to the pathogenesis of COPD. RONS and calpain play important roles in the development of airway and pulmonary vascular remodeling in COPD. Published data show that increased RONS production is associated with increased calpain activation and/or elevated calpain protein level, leading to epithelial or endothelial barrier dysfunction, neovascularization, lung inflammation, increased smooth muscle cell proliferation, and deposition of extracellular matrix protein. Further investigation of the redox-dependent calpain signaling may provide future targets for the prevention and treatment of COPD.
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Affiliation(s)
- Laszlo Kovacs
- Department of Pharmacology & Toxicology, Medical College of Georgia, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA
| | - Yunchao Su
- Department of Pharmacology & Toxicology, Medical College of Georgia, Augusta University, 1120 15th Street, Augusta, GA, 30912, USA.
- Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
- Vascular Biology Center, Medical College of Georgia, Augusta University, Augusta, GA, 30912, USA.
- Research Service, Charlie Norwood Veterans Affairs Medical Center, Augusta, GA, 30912, USA.
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20
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Kim SY, Kim HJ, Park MK, Huh JW, Park HY, Ha SY, Shin JH, Lee YS. Mitochondrial E3 Ubiquitin Protein Ligase 1 Mediates Cigarette Smoke-Induced Endothelial Cell Death and Dysfunction. Am J Respir Cell Mol Biol 2016. [PMID: 26203915 DOI: 10.1165/rcmb.2014-0377oc] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
By virtue of the critical roles of Akt in vascular endothelial cell (EC) survival and function, cigarette smoke-induced Akt reduction may contribute to EC death and dysfunction in smokers' lungs. One of the negative Akt regulatory mechanisms is K48-linked Akt ubiquitination and subsequent proteasomal degradation. Here, we assessed the involvement of mitochondrial E3 ubiquitin protein ligase 1 (MUL1), recently revealed as a novel Akt ubiquitin E3 ligase, in cigarette smoke-induced Akt ubiquitination and its contribution to pulmonary EC death and dysfunction. In human lung microvascular ECs (HLMVECs), cigarette smoke extract (CSE) noticeably elevated MUL1 expression and K48-linked Akt ubiquitination, whereas Akt, p-Akt, eNOS, and p-eNOS levels were decreased. MUL1 knockdown suppressed CSE-induced Akt ubiquitination/degradation and cytoplasmic reductions of Akt and p-Akt. Furthermore, MUL1 knockdown attenuated reductions of eNOS and p-eNOS and alleviated EC survival, migration, and tube formation in the presence of CSE exposure. In addition, overexpression of K284R Akt, a mutant for a MUL1-ubiquitination site, produced similar effects. In HLMVECs exposed to CSE, Akt-MUL1 interaction was increased in coimmunoprecipitation and in situ proximity ligation assays. Similarly, the proximity ligation assay signals were elevated in rat lungs exposed to cigarette smoke for 3 months, during which Mul1 levels were noticeably increased. Finally, we found that CSE-mediated MUL1 induction in HLMVECs is mediated by retinoic acid receptor-related orphan receptor α. Taken together, these data suggest that cigarette smoke-induced MUL1 elevation mediates Akt ubiquitination/degradation, potentially leading to pulmonary EC death and functional impairment.
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Affiliation(s)
- Sun-Yong Kim
- 1 Department of Otolaryngology, Ajou University School of Medicine, Suwon
| | - Hyo Jeong Kim
- 2 Department of Pharmacology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon
| | - Mi Kyeong Park
- 2 Department of Pharmacology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon
| | - Jin Won Huh
- 3 Department of Pulmonary and Critical Care Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul; and
| | - Hye Yun Park
- 4 Division of Pulmonary and Critical Care Medicine, Department of Medicine and
| | - Sang Yun Ha
- 5 Department of Pathology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Joo-Ho Shin
- 2 Department of Pharmacology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon
| | - Yun-Song Lee
- 2 Department of Pharmacology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon
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21
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Pini A, Boccalini G, Baccari MC, Becatti M, Garella R, Fiorillo C, Calosi L, Bani D, Nistri S. Protection from cigarette smoke-induced vascular injury by recombinant human relaxin-2 (serelaxin). J Cell Mol Med 2016; 20:891-902. [PMID: 26915460 PMCID: PMC4831370 DOI: 10.1111/jcmm.12802] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Accepted: 01/02/2016] [Indexed: 12/14/2022] Open
Abstract
Smoking is regarded as a major risk factor for the development of cardiovascular diseases (CVD). This study investigates whether serelaxin (RLX, recombinant human relaxin-2) endowed with promising therapeutic properties in CVD, can be credited of a protective effect against cigarette smoke (CS)-induced vascular damage and dysfunction. Guinea pigs exposed daily to CS for 8 weeks were treated with vehicle or RLX, delivered by osmotic pumps at daily doses of 1 or 10 μg. Controls were non-smoking animals. Other studies were performed on primary guinea pig aortic endothelial (GPAE) cells, challenged with CS extracts (CSE) in the absence and presence of 100 ng/ml (17 nmol/l) RLX. In aortic specimens from CS-exposed guinea pigs, both the contractile and the relaxant responses to phenylephrine and acetylcholine, respectively, were significantly reduced in amplitude and delayed, in keeping with the observed adverse remodelling of the aortic wall, endothelial injury and endothelial nitric oxide synthase (eNOS) down-regulation. RLX at both doses maintained the aortic contractile and relaxant responses to a control-like pattern and counteracted aortic wall remodelling and endothelial derangement. The experiments with GPAE cells showed that CSE significantly decreased cell viability and eNOS expression and promoted apoptosis by sparkling oxygen free radical-related cytotoxicity, while RLX counterbalanced the adverse effects of CSE. These findings demonstrate that RLX is capable of counteracting CS-mediated vascular damage and dysfunction by reducing oxidative stress, thus adding a tile to the growing mosaic of the beneficial effects of RLX in CVD.
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Affiliation(s)
- Alessandro Pini
- Department of Experimental & Clinical Medicine, Section of Anatomy & Histology & Research Unit of Histology & Embryology, University of Florence, Florence, Italy
| | - Giulia Boccalini
- Department of Experimental & Clinical Medicine, Section of Anatomy & Histology & Research Unit of Histology & Embryology, University of Florence, Florence, Italy
| | | | - Matteo Becatti
- Department of Experimental & Clinical Biomedical Sciences 'Mario Serio', Section of Biochemistry, University of Florence, Florence, Italy
| | - Rachele Garella
- Section of Physiology, University of Florence, Florence, Italy
| | - Claudia Fiorillo
- Department of Experimental & Clinical Biomedical Sciences 'Mario Serio', Section of Biochemistry, University of Florence, Florence, Italy
| | - Laura Calosi
- Department of Experimental & Clinical Medicine, Section of Anatomy & Histology & Research Unit of Histology & Embryology, University of Florence, Florence, Italy
| | - Daniele Bani
- Department of Experimental & Clinical Medicine, Section of Anatomy & Histology & Research Unit of Histology & Embryology, University of Florence, Florence, Italy
| | - Silvia Nistri
- Department of Experimental & Clinical Medicine, Section of Anatomy & Histology & Research Unit of Histology & Embryology, University of Florence, Florence, Italy
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Progatzky F, Cook HT, Lamb JR, Bugeon L, Dallman MJ. Mucosal inflammation at the respiratory interface: a zebrafish model. Am J Physiol Lung Cell Mol Physiol 2016; 310:L551-61. [PMID: 26719149 PMCID: PMC4796261 DOI: 10.1152/ajplung.00323.2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 12/23/2015] [Indexed: 12/19/2022] Open
Abstract
Inflammatory diseases of the respiratory system such as asthma and chronic obstructive pulmonary disease are increasing globally and remain poorly understood conditions. Although attention has long focused on the activation of type 1 and type 2 helper T cells of the adaptive immune system in these diseases, it is becoming increasingly apparent that there is also a need to understand the contributions and interactions between innate immune cells and the epithelial lining of the respiratory system. Cigarette smoke predisposes the respiratory tissue to a higher incidence of inflammatory disease, and here we have used zebrafish gills as a model to study the effect of cigarette smoke on the respiratory epithelium. Zebrafish gills fulfill the same gas-exchange function as the mammalian airways and have a similar structure. Exposure to cigarette smoke extracts resulted in an increase in transcripts of the proinflammatory cytokines TNF-α, IL-1β, and MMP9 in the gill tissue, which was at least in part mediated via NF-κB activation. Longer term exposure of fish for 6 wk to cigarette smoke extract resulted in marked structural changes to the gills with lamellar fusion and mucus cell formation, while signs of inflammation or fibrosis were absent. This shows, for the first time, that zebrafish gills are a relevant model for studying the effect of inflammatory stimuli on a respiratory epithelium, since they mimic the immunopathology involved in respiratory inflammatory diseases of humans.
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Affiliation(s)
- Fränze Progatzky
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, United Kingdom; and
| | - H Terence Cook
- Department of Medicine, Faculty of Medicine, Imperial College London, London, United Kingdom
| | - Jonathan R Lamb
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, United Kingdom; and
| | - Laurence Bugeon
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, United Kingdom; and
| | - Margaret J Dallman
- Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, United Kingdom; and
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Lubrano V, Balzan S. Roles of LOX-1 in microvascular dysfunction. Microvasc Res 2016; 105:132-40. [PMID: 26907636 DOI: 10.1016/j.mvr.2016.02.006] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2015] [Revised: 02/17/2016] [Accepted: 02/17/2016] [Indexed: 10/22/2022]
Abstract
Studies from human and animal models with metabolic disease and hypertension highlight atrophic remodeling, reduced lumen size and thinner vascular walls of microvessels with profound density reduction. This impaired vascular response limits the perfusion of peripheral tissues inducing organ damage. These conditions are strongly associated with oxidative stress and in particular with the up-regulation of lectin-like oxidized low density lipoprotein receptor-1 (LOX-1). Several factors such as cytokines, shear stress, and advanced glycation end-products, especially oxLDL, can up-regulate LOX-1. The activation of this receptor induces the production of adhesion molecules, cytokines and the release of reactive oxygen species via NADPH oxidase. LOX-1 is considered a potent mediator of endothelial dysfunction and it is significantly associated with reduced microvascular endothelium NO-dependent vasodilation in hypercholesterolemia and hypertension. Microvascular endothelial cells increased the expression of IL-6 in association with the increased concentration of LDL and its degree of oxidation. Moreover, increased IL-6 levels are associated with up-regulation of LOX-1 in a dose-dependent manner. Another consequence of microvascular inflammation is the generation of small amounts of ROS, similar to those induced by low concentration of oxLDL (<5 μg/mL) which induces capillary tube formation of endothelial cells, through LOX-1 up-regulation. In light of its central role, LOX-1 represents an attractive therapeutic target for the treatment of human atherosclerotic diseases and microvascular disorders.
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Affiliation(s)
- Valter Lubrano
- Fondazione CNR/Regione Toscana G. Monasterio, Pisa, Italy.
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Luo H, England CG, Graves SA, Sun H, Liu G, Nickles RJ, Cai W. PET Imaging of VEGFR-2 Expression in Lung Cancer with 64Cu-Labeled Ramucirumab. J Nucl Med 2016; 57:285-90. [PMID: 26541778 PMCID: PMC4738068 DOI: 10.2967/jnumed.115.166462] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2015] [Accepted: 10/21/2015] [Indexed: 12/16/2022] Open
Abstract
UNLABELLED Lung cancer accounts for 17% of cancer-related deaths worldwide, and most patients present with locally advanced or metastatic disease. Novel PET imaging agents for assessing vascular endothelial growth factor receptor-2 (VEGFR-2) expression can be used for detecting VEGFR-2-positive malignancies and subsequent monitoring of therapeutic response to VEGFR-2-targeted therapies. Here, we report the synthesis and characterization of an antibody-based imaging agent for PET imaging of VEGFR-2 expression in vivo. METHODS Ramucirumab (named RamAb), a fully humanized IgG1 monoclonal antibody, was conjugated to 2-S-(4-isothiocyanatobenzyl)-1,4,7-triazacyclononane-1,4,7-triacetic acid (p-SCN-Bn-NOTA) and labeled with (64)Cu. Flow cytometry analysis and microscopy studies were performed to compare the VEGFR-2 binding affinity of RamAb and NOTA-RamAb. PET imaging and biodistribution studies were performed in nude mice bearing HCC4006 and A549 xenograft tumors. Ex vivo histopathology was performed to elucidate the expression patterns of VEGFR-2 in different tissues and organs to validate in vivo results. RESULTS Flow cytometry examination revealed the specific binding capacity of fluorescein isothiocyanate-RamAb to VEGFR-2, and no difference in VEGFR-2 binding affinity was seen between RamAb and NOTA-RamAb. After being labeled with (64)Cu, PET imaging revealed specific and prominent uptake of (64)Cu-NOTA-RamAb in VEGFR-2-positive HCC4006 tumors (9.4 ± 0.5 percentage injected dose per gram at 48 h after injection; n = 4) and significantly lower uptake in VEGFR-2-negative A549 tumors (4.3 ± 0.2 percentage injected dose per gram at 48 h after injection; n = 3). Blocking experiments revealed significantly lower uptake in HCC4006 tumors, along with histology analysis, further confirming the VEGFR-2 specificity of (64)Cu-NOTA-RamAb. CONCLUSION This study provides initial evidence that (64)Cu-NOTA-RamAb can function as a PET imaging agent for visualizing VEGFR-2 expression in vivo, which may also find potential applications in monitoring the treatment response of VEGFR-2-targeted cancer therapy.
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Affiliation(s)
- Haiming Luo
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin
| | - Christopher G England
- Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Stephen A Graves
- Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Haiyan Sun
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin
| | - Glenn Liu
- University of Wisconsin Carbone Cancer Center, Madison, Wisconsin
| | - Robert J Nickles
- Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin; and
| | - Weibo Cai
- Department of Radiology, University of Wisconsin-Madison, Madison, Wisconsin Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin; and University of Wisconsin Carbone Cancer Center, Madison, Wisconsin
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Endothelial Progenitor Cells for Diagnosis and Prognosis in Cardiovascular Disease. Stem Cells Int 2015; 2016:8043792. [PMID: 26839569 PMCID: PMC4709789 DOI: 10.1155/2016/8043792] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 09/16/2015] [Accepted: 09/20/2015] [Indexed: 12/12/2022] Open
Abstract
Objective. To identify, evaluate, and synthesize evidence on the predictive power of circulating endothelial progenitor cells (EPCs) in cardiovascular disease, through a systematic review of quantitative studies. Data Sources. MEDLINE was searched using keywords related to "endothelial progenitor cells" and "endothelium" and, for the different categories, respectively, "smoking"; "blood pressure"; "diabetes mellitus" or "insulin resistance"; "dyslipidemia"; "aging" or "elderly"; "angina pectoris" or "myocardial infarction"; "stroke" or "cerebrovascular disease"; "homocysteine"; "C-reactive protein"; "vitamin D". Study Selection. Database hits were evaluated against explicit inclusion criteria. From 927 database hits, 43 quantitative studies were included. Data Syntheses. EPC count has been suggested for cardiovascular risk estimation in the clinical practice, since it is currently accepted that EPCs can work as proangiogenic support cells, maintaining their importance as regenerative/reparative potential, and also as prognostic markers. Conclusions. EPCs showed an important role in identifying cardiovascular risk conditions, and to suggest their evaluation as predictor of outcomes appears to be reasonable in different defined clinical settings. Due to their capability of proliferation, circulation, and the development of functional progeny, great interest has been directed to therapeutic use of progenitor cells in atherosclerotic diseases. This trial is registered with registration number: Prospero CRD42015023717.
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Prakash Muyal J, Kumar D, Kotnala S, Muyal V, Tyagi AK. Recombinant Human Keratinocyte Growth Factor Induces Akt Mediated Cell Survival Progression in Emphysematous Mice. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.arbr.2015.02.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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27
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Moriyama M, Metzger S, van der Vlies AJ, Uyama H, Ehrbar M, Hasegawa U. Inhibition of angiogenesis by antioxidant micelles. Adv Healthc Mater 2015; 4:569-75. [PMID: 25213436 DOI: 10.1002/adhm.201400249] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 07/31/2014] [Indexed: 12/12/2022]
Abstract
Antioxidant micelles capable of scavenging reactive oxygen species (ROS) are prepared from poly(ethylene glycol)-b-poly(dopamine) block copolymers. The micelles inhibit tube formation of human umbilical vein endothelial cells (HUVECs) by scavenging endogenous ROS. Furthermore, the micelles inhibit angiogenesis in the chicken ex ovo chorioallantoic membrane assay. The results show that antioxidant micelles containing catechol moieties may be useful in anti-angiogenic therapy to treat various diseases such as cancer.
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Affiliation(s)
- Masaki Moriyama
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka Suita, Osaka 565-0871 Japan
| | - Stéphanie Metzger
- Department of Obstetrics; University, Hospital Zurich; Schmelzbergstrasse 12 8091 Zürich Switzerland
| | - André J. van der Vlies
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka Suita, Osaka 565-0871 Japan
- Frontier Research Center; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka Suita, Osaka 565-0871 Japan
| | - Hiroshi Uyama
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka Suita, Osaka 565-0871 Japan
| | - Martin Ehrbar
- Department of Obstetrics; University, Hospital Zurich; Schmelzbergstrasse 12 8091 Zürich Switzerland
| | - Urara Hasegawa
- Department of Applied Chemistry; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka Suita, Osaka 565-0871 Japan
- Frontier Research Base for Global Young Researchers; Graduate School of Engineering; Osaka University; 2-1 Yamadaoka Suita, Osaka 565-0871 Japan
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Xu L, Wang S, Li B, Sun A, Zou Y, Ge J. A protective role of ciglitazone in ox-LDL-induced rat microvascular endothelial cells via modulating PPARγ-dependent AMPK/eNOS pathway. J Cell Mol Med 2014; 19:92-102. [PMID: 25388834 PMCID: PMC4288353 DOI: 10.1111/jcmm.12463] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Accepted: 09/19/2014] [Indexed: 01/10/2023] Open
Abstract
Thiazolidinediones, the antidiabetic agents such as ciglitazone, has been proved to be effective in limiting atherosclerotic events. However, the underlying mechanism remains elucidative. Ox-LDL receptor-1 (LOX-1) plays a central role in ox-LDL-mediated atherosclerosis via endothelial nitric oxide synthase (eNOS) uncoupling and nitric oxide reduction. Therefore, we tested the hypothesis that ciglitazone, the PPARγ agonist, protected endothelial cells against ox-LDL through regulating eNOS activity and LOX-1 signalling. In the present study, rat microvascular endothelial cells (RMVECs) were stimulated by ox-LDL. The impact of ciglitazone on cell apoptosis and angiogenesis, eNOS expression and phosphorylation, nitric oxide synthesis and related AMPK, Akt and VEGF signalling pathway were observed. Our data showed that both eNOS and Akt phosphorylation, VEGF expression and nitric oxide production were significantly decreased, RMVECs ageing and apoptosis increased after ox-LDL induction for 24 hrs, all of which were effectively reversed by ciglitazone pre-treatment. Meanwhile, phosphorylation of AMP-activated protein kinase (AMPK) was suppressed by ox-LDL, which was also prevented by ciglitazone. Of interest, AMPK inhibition abolished ciglitazone-mediated eNOS function, nitric oxide synthesis and angiogenesis, and increased RMVECs ageing and apoptosis. Further experiments showed that inhibition of PPARγ significantly suppressed AMPK phosphorylation, eNOS expression and nitric oxide production. Ciglitazone-mediated angiogenesis and reduced cell ageing and apoptosis were reversed. Furthermore, LOX-1 protein expression in RMVECs was suppressed by ciglitazone, but re-enhanced by blocking PPARγ or AMPK. Ox-LDL-induced suppression of eNOS and nitric oxide synthesis were largely prevented by silencing LOX-1. Collectively, these data demonstrate that ciglitazone-mediated PPARγ activation suppresses LOX-1 and moderates AMPK/eNOS pathway, which contributes to endothelial cell survival and function preservation.
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Affiliation(s)
- Lei Xu
- Shanghai Institute of Cardiovascular Diseases, Zhongshan Hospital, Fudan University, Shanghai, China; Institutes of Biomedical Science, Fudan University, Shanghai, China
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Pérez-Rial S, Girón-Martínez Á, Peces-Barba G. Animal models of chronic obstructive pulmonary disease. Arch Bronconeumol 2014; 51:121-7. [PMID: 25201221 DOI: 10.1016/j.arbres.2014.06.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 06/24/2014] [Accepted: 06/25/2014] [Indexed: 11/28/2022]
Abstract
Animal models of disease have always been welcomed by the scientific community because they provide an approach to the investigation of certain aspects of the disease in question. Animal models of COPD cannot reproduce the heterogeneity of the disease and usually only manage to represent the disease in its milder stages. Moreover, airflow obstruction, the variable that determines patient diagnosis, not always taken into account in the models. For this reason, models have focused on the development of emphysema, easily detectable by lung morphometry, and have disregarded other components of the disease, such as airway injury or associated vascular changes. Continuous, long-term exposure to cigarette smoke is considered the main risk factor for this disease, justifying the fact that the cigarette smoke exposure model is the most widely used. Some variations on this basic model, related to exposure time, the association of other inducers or inhibitors, exacerbations or the use of transgenic animals to facilitate the identification of pathogenic pathways have been developed. Some variations or heterogeneity of this disease, then, can be reproduced and models can be designed for resolving researchers' questions on disease identification or treatment responses.
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Affiliation(s)
- Sandra Pérez-Rial
- Laboratorio de Neumología, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz-CIBERES-UAM, Madrid, España
| | - Álvaro Girón-Martínez
- Laboratorio de Neumología, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz-CIBERES-UAM, Madrid, España
| | - Germán Peces-Barba
- Laboratorio de Neumología, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz-CIBERES-UAM, Madrid, España.
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Prakash Muyal J, Kumar D, Kotnala S, Muyal V, Kumar Tyagi A. Recombinant Human Keratinocyte Growth Factor Induces Akt Mediated Cell Survival Progression in Emphysematous Mice. Arch Bronconeumol 2014; 51:328-37. [PMID: 25017817 DOI: 10.1016/j.arbres.2014.04.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Revised: 04/28/2014] [Accepted: 04/29/2014] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Emphysema has been associated with decreased VEGF and VEGFR-2 expression and the presence of high numbers of apoptotic alveolar cells. Keratinocyte growth factor stimulates VEGF synthesis which in turn confers normal lung structure maintenance via the Akt pathway. In this study the potential role of rHuKGF in the improvement of deregulated Akt mediated cell survival pathway in emphysematous mice was investigated. METHODS Three experimental groups, i.e., emphysema, treatment and control groups, were prepared. Lungs of mice were treated on 3 occasions by oropharyngeal instillation of 10mg rHuKGF per kg body weight after induction of emphysema with porcine pancreatic elastase. Subsequently, lung tissues from mice were collected for histopathology and molecular biology studies. RESULTS AND DISCUSSION Histopathology photomicrographs and destructive index analysis have shown that elastase-induced airspace enlargement and loss of alveoli recovered in the treatment group. rHuKGF stimulates VEGF production which in turn induces the Akt mediated cell survival pathway in emphysematous lungs. mRNA expression of VEGF, VEGFR, PI3K and Akt was significantly increased while Pten, Caspase-9 and Bad was notably decreased in treatment group when compared with emphysema group, being comparable with the control group. Moreover, VEGF protein expression was in accordance with that found for mRNA. CONCLUSION Therapeutic rHuKGF supplementation improves the deregulated Akt pathway in emphysema, resulting in alveolar cell survival through activation of the endogenous VEGF-dependent cell survival pathway. Hence rHuKGF may prove to be a potential drug in the treatment of emphysema.
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Affiliation(s)
- Jai Prakash Muyal
- Department of Biotechnology, School of Biotechnology, Gautam Buddha University, Greater Noida, Uttar Pradesh, India.
| | - Dhananjay Kumar
- Department of Biotechnology, School of Biotechnology, Gautam Buddha University, Greater Noida, Uttar Pradesh, India
| | - Sudhir Kotnala
- Department of Biotechnology, School of Biotechnology, Gautam Buddha University, Greater Noida, Uttar Pradesh, India
| | - Vandana Muyal
- Department of Internal Medicine, Division of Respiratory Medicine, Philipps-Universität Marburg, Marburg, Alemania; 14/Type V, Gautam Buddha University, Greater Noida, Uttar Pradesh, India
| | - Amit Kumar Tyagi
- Division of Nuclear Medicine, Institute of Nuclear Medicine and Allied Sciences, Defense Research Development Organization, Nueva Delhi, India
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Saraswati S, Kanaujia PK, Kumar S, Kumar R, Alhaider AA. Tylophorine, a phenanthraindolizidine alkaloid isolated from Tylophora indica exerts antiangiogenic and antitumor activity by targeting vascular endothelial growth factor receptor 2-mediated angiogenesis. Mol Cancer 2013; 12:82. [PMID: 23895055 PMCID: PMC3733984 DOI: 10.1186/1476-4598-12-82] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2013] [Accepted: 07/19/2013] [Indexed: 12/13/2022] Open
Abstract
Background Anti-angiogenesis targeting VEGFR2 has been considered as an important strategy for cancer therapy. Tylophorine is known to possess anti-inflammatory and antitumor activity, but its roles in tumor angiogenesis, the key step involved in tumor growth and metastasis, and the involved molecular mechanism is still unknown. Therefore, we examined its anti-angiogenic effects and mechanisms in vitro and in vivo. Methods We used tylophorine and analyzed its inhibitory effects on human umbilical vein endothelial cells (HUVEC) in vitro and Ehrlich ascites carcinoma (EAC) tumor in vivo. Results Tylophorine significantly inhibited a series of VEGF-induced angiogenesis processes including proliferation, migration, and tube formation of endothelial cells. Besides, it directly inhibited VEGFR2 tyrosine kinase activity and its downstream signaling pathways including Akt, Erk and ROS in endothelial cells. Using HUVECs we demonstrated that tylophorine inhibited VEGF-stimulated inflammatory responses including IL-6, IL-8, TNF-α, IFN-γ, MMP-2 and NO secretion. Tylophorine significantly inhibited neovascularization in sponge implant angiogenesis assay and also inhibited tumor angiogenesis and tumor growth in vivo. Molecular docking simulation indicated that tylophorine could form hydrogen bonds and aromatic interactions within the ATP-binding region of the VEGFR2 kinase unit. Conclusion Tylophorine exerts anti-angiogenesis effects via VEGFR2 signaling pathway thus, may be a viable drug candidate in anti-angiogenesis and anti-cancer therapies.
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Affiliation(s)
- Sarita Saraswati
- Camel Biomedical Research Unit, College of Pharmacy and Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
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Sundar IK, Yao H, Rahman I. Oxidative stress and chromatin remodeling in chronic obstructive pulmonary disease and smoking-related diseases. Antioxid Redox Signal 2013; 18:1956-71. [PMID: 22978694 PMCID: PMC3624634 DOI: 10.1089/ars.2012.4863] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
SIGNIFICANCE Chronic obstructive pulmonary disease (COPD) is predominantly a tobacco smoke-triggered disease with features of chronic low-grade systemic inflammation and aging (inflammaging) of the lung associated with steroid resistance induced by cigarette smoke (CS)-mediated oxidative stress. Oxidative stress induces various kinase signaling pathways leading to chromatin modifications (histone acetylation/deacetylation and histone methylation/demethylation) in inflammation, senescence, and steroid resistance. RECENT ADVANCES Histone mono-, di-, or tri-methylation at lysine residues result in either gene activation (H3K4, H3K36, and H3K79) or repression (H3K9, H3K27, and H3K20). Cross-talk occurs between various epigenetic marks on histones and DNA methylation. Both CS and oxidants alter histone acetylation/deacetylation and methylation/demethylation leading to enhanced proinflammatory gene expression. Chromatin modifications occur in lungs of patients with COPD. Histone deacetylase 2 (HDAC2) reduction (levels and activity) is associated with steroid resistance in response to oxidative stress. CRITICAL ISSUES Histone modifications are associated with DNA damage/repair and epigenomic instability as well as premature lung aging, which have implications in the pathogenesis of COPD. HDAC2/SIRTUIN1 (SIRT1)-dependent chromatin modifications are associated with DNA damage-induced inflammation and senescence in response to CS-mediated oxidative stress. FUTURE DIRECTIONS Understanding CS/oxidative stress-mediated chromatin modifications and the cross-talk between histone acetylation and methylation will demonstrate the involvement of epigenetic regulation of chromatin remodeling in inflammaging. This will lead to identification of novel epigenetic-based therapies against COPD and other smoking-related lung diseases. Pharmacological activation of HDAC2/SIRT1 or reversal of their oxidative post-translational modifications may offer therapies for treatment of COPD and CS-related diseases based on epigenetic histone modifications.
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Affiliation(s)
- Isaac K Sundar
- Department of Environmental Medicine, Lung Biology and Disease Program, University of Rochester Medical Center, Rochester, New York 14642, USA
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Gornati R, Colombo G, Clerici M, Rossi F, Gagliano N, Riva C, Colombo R, Dalle-Donne I, Bernardini G, Milzani A. Protein carbonylation in human endothelial cells exposed to cigarette smoke extract. Toxicol Lett 2013; 218:118-28. [PMID: 23396223 DOI: 10.1016/j.toxlet.2013.01.023] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Revised: 01/02/2013] [Accepted: 01/28/2013] [Indexed: 01/17/2023]
Abstract
Cigarette smoke is a significant independent risk factor for vascular diseases and is a leading cause of structural and functional alterations of the vascular endothelium. In this study, we show protein carbonylation in the human umbilical vein endothelial cell line (ECV-304) exposed to whole-phase cigarette smoke extract. The main carbonylated proteins, including cytoskeletal proteins, glycolytic enzymes, xenobiotic metabolizing and antioxidant enzymes, and endoplasmic reticulum proteins, were identified by means of two-dimensional electrophoresis and Matrix-Assisted Laser Desorption/Ionization-Time of Flight (MALDI-TOF) mass spectrometry (redox proteomics). Morphological analyses by fluorescence microscopy evidenced alterations in the microtubule cytoskeleton, especially at longer exposure time to cigarette smoke extract. Morphological analyses by transmission electron microscopy showed vacuolisation of the cytoplasm, alteration of mitochondria ultrastructure, and some enlargement of the perinuclear space. The possible role played by protein carbonylation caused by reactive species contained in cigarette smoke in the cigarette smoke-induced endothelial injury is discussed.
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Affiliation(s)
- Rosalba Gornati
- Department of Biotechnology and Life Sciences, University of Insubria, I-21100 Varese, Italy
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Saraswati S, Agrawal SS. Brucine, an indole alkaloid from Strychnos nux-vomica attenuates VEGF-induced angiogenesis via inhibiting VEGFR2 signaling pathway in vitro and in vivo. Cancer Lett 2013; 332:83-93. [PMID: 23348691 DOI: 10.1016/j.canlet.2013.01.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2012] [Revised: 01/08/2013] [Accepted: 01/09/2013] [Indexed: 12/27/2022]
Abstract
In this study, we investigated the mechanism of brucine in tumor angiogenesis. We found that brucine inhibits VEGF-induced cell proliferation, chemotactic motility, and the formation of capillary-like structures in HUVECs in a dose-dependent manner. Brucine suppresses VEGF- induced p-VEGFR2 kinase activity and inhibits neovascularization in vivo. Brucine inhibits the downstream protein kinases of VEGFR2, including Src, FAK, ERK, AKT and mTOR. And further downregulates levels of VEGF, NO, IL-6, IL-8, TNF-α and IFN-γ in HUVECs. Taken together, our study suggests that brucine potently suppresses angiogenesis by targeting VEGFR2 activation and may be a viable drug candidate in anti-angiogenesis and anti-cancer therapies.
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Affiliation(s)
- Sarita Saraswati
- Genome Research Laboratory, Delhi Institute of Pharmaceutical Sciences and Research, Pushp Vihar Sec-3, MB Road, New Delhi 110 017, India.
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Agarwal AR, Zhao L, Sancheti H, Sundar IK, Rahman I, Cadenas E. Short-term cigarette smoke exposure induces reversible changes in energy metabolism and cellular redox status independent of inflammatory responses in mouse lungs. Am J Physiol Lung Cell Mol Physiol 2012; 303:L889-98. [PMID: 23064950 DOI: 10.1152/ajplung.00219.2012] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Cigarette smoking leads to alteration in cellular redox status, a hallmark in the pathogenesis of chronic obstructive pulmonary disease. This study examines the role of cigarette smoke (CS) exposure in the impairment of energy metabolism and, consequently, mitochondrial dysfunction. Male A/J mice were exposed to CS generated by a smoking machine for 4 or 8 wk. A recovery group was exposed to CS for 8 wk and allowed to recover for 2 wk. Acute CS exposure altered lung glucose metabolism, entailing a decrease in the rate of glycolysis and an increase in the pentose phosphate pathway, as evidenced by altered expression and activity of GAPDH and glucose-6-phosphate dehydrogenase, respectively. Impairment of GAPDH was found to be due to glutathionylation of its catalytic site cysteines. Metabolic changes were associated with changes in cellular and mitochondrial redox status, assessed in terms of pyridine nucleotides and glutathione. CS exposure elicited an upregulation of the expression of complexes II, III, IV, and V and of the activity of complexes II, IV, and V. Microarray analysis of gene expression in mouse lungs after exposure to CS for 8 wk revealed upregulation of a group of genes involved in metabolism, electron transfer chain, oxidative phosphorylation, mitochondrial transport and dynamics, and redox regulation. These changes occurred independently of inflammatory responses. These findings have implications for the early onset of alterations in energy and redox metabolism upon acute lung exposure to CS.
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Affiliation(s)
- Amit R Agarwal
- Pharmacology & Pharmaceutical Sciences, School of Pharmacy, Univ. of Southern California, Los Angeles, CA 90089-9121, USA
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Wang Y, Yu C, Pan Y, Yang X, Huang Y, Feng Z, Li X, Yang S, Liang G. A novel synthetic mono-carbonyl analogue of curcumin, A13, exhibits anti-inflammatory effects in vivo by inhibition of inflammatory mediators. Inflammation 2012; 35:594-604. [PMID: 21614553 DOI: 10.1007/s10753-011-9350-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Curcumin is a pleiotropic molecule against inflammatory related diseases. However, poor bioavailability greatly limits its application in clinic. Our previous study synthesized and evaluated a hydrosoluble mono-carbonyl analogue of curcumin, (2E,5E)-2,5-bis(4-(3-(dimethylamino)-propoxy)benzylidene)cyclopentanone (A13). In the present study, we further evaluated the anti-inflammatory effect of A13 in vivo. In lipopolysaccharide-challenged mice, pretreatment of A13 (15 mg/kg, i.v.) attenuated the increase of plasma level of NO, TNF-α, and IL-6, significantly inhibited the increase of hepatic inflammatory gene transcription, and improved pulmonary damages. In addition, A13 (10 or 30 mg/kg, i.p.) reduced vascular permeability in Institute of Cancer Research mice and inhibited pain reaction in chemically induced inflammatory models. Together, A13 exhibits anti-inflammatory activities both in vitro and in vivo by the inhibition of various inflammatory mediators.
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Affiliation(s)
- Yi Wang
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, 325035, China
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38
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Tulio AZ, Chang C, Edirisinghe I, White KD, Jablonski JE, Banaszewski K, Kangath A, Tadapaneni RK, Burton-Freeman B, Jackson LS. Berry fruits modulated endothelial cell migration and angiogenesis via phosphoinositide-3 kinase/protein kinase B pathway in vitro in endothelial cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:5803-5812. [PMID: 22448669 DOI: 10.1021/jf3001636] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Polyphenolic-rich berry fruits are known to activate redox-sensitive cellular signaling molecules such as phosphatidylinositol-3-kinase (PI3 kinase)/kinase B (Akt), resulting in a cascade of downstream signaling pathways. This study investigated the ability of strawberry (SB), wild blueberry (WBB), and cranberry (CB) extracts to induce the activation of PI3 kinase/Akt signaling in vitro in human umbilical endothelial cells (HUVECs) and whether this activation would enhance cell migration and angiogenesis. Anthocyanin profiles of the extracts were characterized using HPLC-ESI/MS, and Akt activation was investigated using the Alpha Screen SureFire assay. The total anthocyanin contents of SB, WBB, and CB extracts were 81.7, 82.5, and 83.0 mg/100 g fresh weight, respectively. SB, WBB, and CB extracts activated Akt in a dose-dependent manner via PI3 kinase and induced cell migration and angiogenesis in vitro in HUVECs. The results from this study suggest that polyphenolics in berry fruits may play a role in promoting vascular health.
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Affiliation(s)
- Artemio Z Tulio
- Center for Food Safety and Applied Nutrition, U.S. Food and Drug Administration , 6502 South Archer Road, Bedford Park, Illinois 60501, United States
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Yang SR, Rahman I, Trosko JE, Kang KS. Oxidative stress-induced biomarkers for stem cell-based chemical screening. Prev Med 2012; 54 Suppl:S42-9. [PMID: 22197760 DOI: 10.1016/j.ypmed.2011.11.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2011] [Accepted: 11/30/2011] [Indexed: 12/23/2022]
Abstract
Stem cells have been considered for their potential in pharmaceutical research, as well as for stem cell-based therapy for many diseases. Despite the potential for their use, the challenge remains to examine the safety and efficacy of stem cells for their use in therapies. Recently, oxidative stress has been strongly implicated in the functional regulation of cell behavior of stem cells. Therefore, development of rapid and sensitive biomarkers, related to oxidative stress is of growing importance in stem cell-based therapies for treating various diseases. Since stem cells have been implicated as targets for carcinogenesis and might be the origin of "cancer stem cells", understanding of how oxidative stress-induced signaling, known to be involved in the carcinogenic process could lead to potential screening of cancer chemopreventive and chemotherapeutic agents. An evaluation of antioxidant states reducing equivalents like GSH and superoxide dismutase (SOD), as well as reactive oxygen species (ROS) and nitric oxide (NO) generation, can be effective markers in stem cell-based therapies. In addition, oxidative adducts, such as 4-hydroxynonenal, can be reliable markers to detect cellular changes during self-renewal and differentiation of stem cells. This review highlights the biomarker development to monitor oxidative stress response for stem cell-based chemical screening.
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Affiliation(s)
- Se-Ran Yang
- Adult Stem Cell Research Center, College of Veterinary Medicine, Seoul National University, Seoul, Republic of Korea
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40
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Reddy NM, Vegiraju S, Irving A, Paun BC, Luzina IG, Atamas SP, Biswal S, Ana NA, Mitzner W, Reddy SP. Targeted deletion of Jun/AP-1 in alveolar epithelial cells causes progressive emphysema and worsens cigarette smoke-induced lung inflammation. THE AMERICAN JOURNAL OF PATHOLOGY 2012; 180:562-74. [PMID: 22265050 DOI: 10.1016/j.ajpath.2011.10.029] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2011] [Revised: 10/12/2011] [Accepted: 10/27/2011] [Indexed: 10/14/2022]
Abstract
Chronic obstructive pulmonary disease appears to occur slowly and progressively over many years, with both genetic factors and environmental modifiers contributing to its pathogenesis. Although the c-Jun/activator protein 1 transcriptional factor regulates cell proliferation, apoptosis, and inflammatory responses, its role in lung pathogenesis is largely unknown. In this study, we report decreased expression levels of c-Jun mRNA and protein in the lung tissues of patients with advanced chronic obstructive pulmonary disease, and the genetic deletion of c-Jun specifically in alveolar epithelial cells causes progressive emphysema with lung inflammation and alveolar air space enlargement, which are cardinal features of emphysema. Although mice lacking c-Jun specifically in lung alveolar epithelial cells appear normal at the age of 6 weeks, when exposed to long-term cigarette smoke, c-Jun-mutant mice display more lung inflammation with perivascular and peribronchiolar infiltrates compared with controls. These results demonstrate that the c-Jun/activator protein 1 pathway is critical for maintaining lung alveolar cell homeostasis and that loss of its expression can contribute to lung inflammation and progressive emphysema.
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Affiliation(s)
- Narsa M Reddy
- Department of Environmental Health Sciences, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland, USA
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Mo Y, Wan R, Feng L, Chien S, Tollerud DJ, Zhang Q. Combination effects of cigarette smoke extract and ambient ultrafine particles on endothelial cells. Toxicol In Vitro 2012; 26:295-303. [PMID: 22178768 PMCID: PMC3273600 DOI: 10.1016/j.tiv.2011.12.001] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2011] [Revised: 10/29/2011] [Accepted: 12/01/2011] [Indexed: 01/01/2023]
Abstract
Previous studies have shown that ambient ultrafine particles with diameters less than 100nm (UFPs) can pass from the lungs to the circulation because of their very small diameter, and induce lung oxidative stress with a resultant dysfunction of lung endothelial cells. However, no studies have addressed the potential combined effects of UFPs and cigarette smoke on vascular endothelial cells. We hypothesized that co-exposure to UFPs and cigarette smoke extract (CSE) may cause combined effects on activation of endothelial cells and dysfunction of endothelium by oxidative stress through activation of NADPH oxidase. We determined the effects of UFPs with or without CSE on mouse pulmonary microvascular endothelial cells (MPMVEC) obtained from C57BL/6J (wild-type) and gp91(phox) knock-out mice (gp91(phox) is one of the key components of NADPH oxidase, one of ROS generators). Our results showed that exposure of MPMVEC from wild-type mice to UFPs or CSE, at a non-toxic dose, induced reactive oxygen species (ROS) generation, increased phosphorylation of p38 and Erk1/2, and up-regulated early growth response -1 (Egr-1) and IL-6 genes. These effects were significantly enhanced when cells were co-exposed to both UFPs and CSE. However, exposure of MPMVEC from gp91(phox) knock-out mice did not induce the above effects. Furthermore, UFPs- and/or CSE-induced Egr-1 mRNA upregulation was attenuated significantly when cells were pre-treated with p38 specific inhibitor, SB 203580, or MEK1/2 inhibitor, PD98059, and Egr-1 siRNA treatment abolished UFPs- and/or CSE-induced overexpression of IL-6. Our results suggest that UFPs and/or CSE caused activation of NADPH oxidase, resulting in ROS generation that led to activation of MAPKs through induced phosphorylation of p38 and ERK1/2 MAPKs and upregulation of Egr-1. Those effects may further result in endothelial dysfunction through production of cytokines such as IL-6. Our results suggest that co-exposure to UFPs and CSE causes enhanced injury to endothelial cells.
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Affiliation(s)
- Yiqun Mo
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Rong Wan
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Lingfang Feng
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
- Department of Hygiene, Zhejiang Academy of Medical Sciences, Hangzhou, Zhejiang, P. R. of China
| | - Sufan Chien
- Department of Surgery, School of Medicine, University of Louisville, Louisville, KY, USA
| | - David J. Tollerud
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
| | - Qunwei Zhang
- Department of Environmental and Occupational Health Sciences, School of Public Health and Information Sciences, University of Louisville, Louisville, KY, USA
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Kietadisorn R, Juni RP, Moens AL. Tackling endothelial dysfunction by modulating NOS uncoupling: new insights into its pathogenesis and therapeutic possibilities. Am J Physiol Endocrinol Metab 2012; 302:E481-95. [PMID: 22167522 DOI: 10.1152/ajpendo.00540.2011] [Citation(s) in RCA: 154] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Endothelial nitric oxide synthase (eNOS) serves as a critical enzyme in maintaining vascular pressure by producing nitric oxide (NO); hence, it has a crucial role in the regulation of endothelial function. The bioavailability of eNOS-derived NO is crucial for this function and might be affected at multiple levels. Uncoupling of eNOS, with subsequently less NO and more superoxide generation, is one of the major underlying causes of endothelial dysfunction found in atherosclerosis, diabetes, hypertension, cigarette smoking, hyperhomocysteinemia, and ischemia/reperfusion injury. Therefore, modulating eNOS uncoupling by stabilizing eNOS activity, enhancing its substrate, cofactors, and transcription, and reversing uncoupled eNOS are attractive therapeutic approaches to improve endothelial function. This review provides an extensive overview of the important role of eNOS uncoupling in the pathogenesis of endothelial dysfunction and the potential therapeutic interventions to modulate eNOS for tackling endothelial dysfunction.
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Affiliation(s)
- Rinrada Kietadisorn
- Maastricht Univ. Medical Centre, Cardiovascular Research Institute Maastricht, Maastricht, The Netherlands
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43
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Lin C, Wu M, Dong J. Quercetin-4'-O-β-D-glucopyranoside (QODG) inhibits angiogenesis by suppressing VEGFR2-mediated signaling in zebrafish and endothelial cells. PLoS One 2012; 7:e31708. [PMID: 22348123 PMCID: PMC3278463 DOI: 10.1371/journal.pone.0031708] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2011] [Accepted: 01/17/2012] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Angiogenesis plays an important role in many physiological and pathological processes. Identification of small molecules that block angiogenesis and are safe and affordable has been a challenge in drug development. Hypericum attenuatum Choisy is a Chinese herb medicine commonly used for treating hemorrhagic diseases. The present study investigates the anti-angiogenic effects of quercetin-4'-O-β-D-glucopyranoside (QODG), a flavonoid isolated from Hypericum attenuatum Choisy, in vivo and in vitro, and clarifies the underlying mechanism of the activity. METHODOLOGY/PRINCIPAL FINDINGS Tg(fli1:EGFP) transgenic zebrafish embryos were treated with different concentrations of quercetin-4'-O-β-D-glucopyranoside (QODG) (20, 60, 180 µM) from 6 hours post fertilisation (hpf) to 72 hpf, and adult zebrafish were allowed to recover in different concentrations of QODG (20, 60, 180 µM) for 7 days post amputation (dpa) prior morphological observation and angiogenesis phenotypes assessment. Human umbilical vein endothelial cells (HUVECs) were treated with or without VEGF and different concentrations of QODG (5, 20, 60, 180 µM), then tested for cell viability, cell migration, tube formation and apoptosis. The role of VEGFR2-mediated signaling pathway in QODG-inhibited angiogenesis was evaluated using quantitative real-time PCR (qRT-PCR) and Western blotting. CONCLUSION/SIGNIFICANCE Quercetin-4'-O-β-D-glucopyranoside (QODG) was shown to inhibit angiogenesis in human umbilical vein endothelial cells (HUVECs) in vitro and zebrafish in vivo via suppressing VEGF-induced phosphorylation of VEGFR2. Our results further indicate that QODG inhibits angiogenesis via inhibition of VEGFR2-mediated signaling with the involvement of some key kinases such as c-Src, FAK, ERK, AKT, mTOR and S6K and induction of apoptosis. Together, this study reveals, for the first time, that QODG acts as a potent VEGFR2 kinase inhibitor, and exerts the anti-angiogenic activity at least in part through VEGFR2-mediated signaling pathway.
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Affiliation(s)
- Chen Lin
- Pharmacy School, Wenzhou Medical College, Wenzhou, Zhejiang Province, People's Republic of China
| | - Menghua Wu
- Pharmacy School, Wenzhou Medical College, Wenzhou, Zhejiang Province, People's Republic of China
| | - Jianyong Dong
- Pharmacy School, Wenzhou Medical College, Wenzhou, Zhejiang Province, People's Republic of China
- * E-mail:
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Yin N, Zhang N, Lal G, Xu J, Yan M, Ding Y, Bromberg JS. Lymphangiogenesis is required for pancreatic islet inflammation and diabetes. PLoS One 2011; 6:e28023. [PMID: 22132197 PMCID: PMC3223214 DOI: 10.1371/journal.pone.0028023] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2011] [Accepted: 10/30/2011] [Indexed: 11/18/2022] Open
Abstract
Lymphangiogenesis is a common phenomenon observed during inflammation and engraftment of transplants, but its precise role in the immune response and underlying mechanisms of regulation remain poorly defined. Here we showed that in response to injury and autoimmunity, lymphangiogenesis occurred around islets and played a key role in the islet inflammation in mice. Vascular endothelial growth factors receptor 3 (VEGFR3) is specifically involved in lymphangiogenesis, and blockade of VEGFR3 potently inhibited lymphangiogenesis in both islets and the draining LN during multiple low-dose streptozotocin (MLDS) induced autoimmune insulitis, which resulted in less T cell infiltration, preservation of islets and prevention of the onset of diabetes. In addition to their well-known conduit function, lymphatic endothelial cells (LEC) also produced chemokines in response to inflammation. These LEC attracted two distinct CX3CR1hi and LYVE-1+ macrophage subsets to the inflamed islets and CX3CR1hi cells were influenced by LEC to differentiate into LYVE-1+ cells closely associated with lymphatic vessels. These observations indicate a linkage among lymphangiogenesis and myeloid cell inflammation during insulitis. Thus, inhibition of lymphangiogenesis holds potential for treating insulitis and autoimmune diabetes.
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Affiliation(s)
- Na Yin
- Center for Vascular and Inflammatory Diseases, University of Maryland, Baltimore, Maryland, United States of America
- * E-mail: (JSB); (NY)
| | - Nan Zhang
- Department of Surgery, Marshall University, Huntington, West Virginia, United States of America
| | - Girdhari Lal
- Center for Vascular and Inflammatory Diseases, University of Maryland, Baltimore, Maryland, United States of America
- Departments of Surgery and Microbiology and Immunology, University of Maryland, Baltimore, Maryland, United States of America
| | - Jiangnan Xu
- Center for Vascular and Inflammatory Diseases, University of Maryland, Baltimore, Maryland, United States of America
- Departments of Surgery and Microbiology and Immunology, University of Maryland, Baltimore, Maryland, United States of America
| | - Minhong Yan
- Department of Tumor Biology and Angiogenesis, Division of Research, Genentech Inc., South San Francisco, California, United States of America
| | - Yaozhong Ding
- Center for Vascular and Inflammatory Diseases, University of Maryland, Baltimore, Maryland, United States of America
- Departments of Surgery and Microbiology and Immunology, University of Maryland, Baltimore, Maryland, United States of America
| | - Jonathan S. Bromberg
- Center for Vascular and Inflammatory Diseases, University of Maryland, Baltimore, Maryland, United States of America
- Departments of Surgery and Microbiology and Immunology, University of Maryland, Baltimore, Maryland, United States of America
- * E-mail: (JSB); (NY)
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Lemaître V, Dabo AJ, D'Armiento J. Cigarette smoke components induce matrix metalloproteinase-1 in aortic endothelial cells through inhibition of mTOR signaling. Toxicol Sci 2011; 123:542-9. [PMID: 21742783 PMCID: PMC3179676 DOI: 10.1093/toxsci/kfr181] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2011] [Accepted: 06/27/2011] [Indexed: 01/04/2023] Open
Abstract
Smoking is a major risk factor for heart disease, but the molecular effects of cigarette smoke on vascular cells are poorly understood. In this study, we demonstrate that matrix metalloproteinase-1 (MMP-1), a collagenase expressed in atherosclerosis and aneurysms but not in the normal vessel wall, is induced in the aortic endothelium of rabbits exposed to cigarette smoke. In vitro cigarette smoke extract (CSE) and one of its components, acrolein, inhibit the mammalian target of rapamycin (mTOR)/p70S6K pathway in human endothelial cells, and chemical inhibition of this pathway by rapamycin resulted in elevated MMP-1. Moreover, the tissue inhibitor of metalloproteases-3 (TIMP-3), a major regulator of angiogenesis, is significantly downregulated in aortic endothelial cells treated with CSE, acrolein, or rapamycin. These data indicate that inhibition of mTOR by cigarette smoke components is a key event in the modulation of endothelial MMP-1 and TIMP-3 expression. Our study suggests that circulating smoke components, including acrolein, contribute to vascular diseases through enhanced MMP-1 and decreased TIMP-3 secretion in the endothelium, potentially leading to impaired angiogenesis, matrix disruption, and vessel injury.
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Affiliation(s)
| | | | - Jeanine D'Armiento
- Division of Molecular Medicine, Department of Medicine, Columbia University College of Physicians and Surgeons, New York, New York 10032
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Kim SY, Lee JH, Huh JW, Ro JY, Oh YM, Lee SD, An S, Lee YS. Cigarette smoke induces Akt protein degradation by the ubiquitin-proteasome system. J Biol Chem 2011; 286:31932-43. [PMID: 21778238 PMCID: PMC3173210 DOI: 10.1074/jbc.m111.267633] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Revised: 07/13/2011] [Indexed: 11/06/2022] Open
Abstract
Emphysema is one of the characteristic features of chronic obstructive pulmonary disease, which is caused mainly by cigarette smoking. Recent data have suggested that apoptosis and cell cycle arrest may contribute to the development of emphysema. In this study, we addressed the question of whether and how cigarette smoke affected Akt, which plays a critical role in cell survival and proliferation. In normal human lung fibroblasts, cigarette smoke extract (CSE) caused cell death, accompanying degradation of total and phosphorylated Akt (p-Akt), which was inhibited by MG132. CSE exposure resulted in preferential ubiquitination of the active Akt (myristoylated), rather than the inactive (T308A/S473A double mutant) Akt. Consistent with cytotoxicity, CSE induced a progressive decrease of phosphorylated human homolog of mouse double minute homolog 2 (p-HDM2) and phosphorylated apoptosis signal regulating kinase 1 (p-ASK1) with concomitant elevation of p53, p21, and phosphorylated p38 MAPK. Forced expression of the active Akt reduced both CSE-induced cytotoxicity and alteration in HDM2/p53/p21 and ASK1/p38 MAPK, compared with the inactive Akt. Of note, CSE induced expression of the tetratrico-peptide repeat domain 3 (TTC3), known as a ubiquitin ligase for active Akt. TTC3 siRNAs suppressed not only CSE-induced Akt degradation but also CSE-induced cytotoxicity. Accordingly, rat lungs exposed to cigarette smoke for 3 months showed elevated TTC3 expression and reduced Akt and p-Akt. Taken together, these data suggest that cigarette smoke induces cytotoxicity, partly through Akt degradation via the ubiquitin-proteasome system, in which TTC3 acts as a ubiquitin ligase for active Akt.
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Affiliation(s)
- Sun-Yong Kim
- From the Division of Pharmacology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon 440-746
| | - Ji-Hyun Lee
- the Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, College of Medicine, Pochon CHA University, Seongnam 463-712
| | - Jin Won Huh
- the Department of Pulmonary and Critical Care Medicine, Asthma Center, and Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, and
| | - Jai Youl Ro
- From the Division of Pharmacology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon 440-746
| | - Yeon-Mock Oh
- the Department of Pulmonary and Critical Care Medicine, Asthma Center, and Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, and
| | - Sang-Do Lee
- the Department of Pulmonary and Critical Care Medicine, Asthma Center, and Clinical Research Center for Chronic Obstructive Airway Diseases, Asan Medical Center, University of Ulsan College of Medicine, Seoul 138-736, and
| | - Sungkwan An
- the Functional Genoproteome Research Centre, Konkuk University, Seoul 143-701, Republic of Korea
| | - Yun-Song Lee
- From the Division of Pharmacology, Sungkyunkwan University School of Medicine, Samsung Biomedical Research Institute, Suwon 440-746
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Wang Y, Yu C, Pan Y, Li J, Zhang Y, Ye F, Yang S, Zhang H, Li X, Liang G. A novel compound C12 inhibits inflammatory cytokine production and protects from inflammatory injury in vivo. PLoS One 2011; 6:e24377. [PMID: 21931698 PMCID: PMC3169595 DOI: 10.1371/journal.pone.0024377] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2011] [Accepted: 08/05/2011] [Indexed: 01/21/2023] Open
Abstract
Inflammation is a hallmark of many diseases. Although steroids and cyclooxygenase inhibitors are main anti-inflammatory therapeutical agents, they may cause serious side effects. Therefore, developing non-steroid anti-inflammatory agents is urgently needed. A novel hydrosoluble compound, C12 (2,6-bis(4-(3-(dimethylamino)-propoxy)benzylidene)cyclohexanone), has been designed and synthesized as an anti-inflammatory agent in our previous study. In the present study, we investigated whether C12 can affect inflammatory processes in vitro and in vivo. In mouse primary peritoneal macrophages, C12 potently inhibited the production of the proinflammatory gene expression including TNF-α, IL-1β, IL-6, iNOS, COX-2 and PGE synthase. The activity of C12 was partly dependent on inhibition of ERK/JNK (but p38) phosphorylation and NF-κB activation. In vivo, C12 suppressed proinflammatory cytokine production in plasma and liver, attenuated lung histopathology, and significantly reduced mortality in endotoxemic mice. In addition, the pre-treatment with C12 reduced the inflammatory pain in the acetic acid and formalin models and reduced the carrageenan-induced paw oedema and acetic acid-increased vascular permeability. Taken together, C12 has multiple anti-inflammatory effects. These findings, coupled with the low toxicity and hydrosolubility of C12, suggests that this agent may be useful in the treatment of inflammatory diseases.
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Affiliation(s)
- Yi Wang
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, People's Republic of China
| | - Congcong Yu
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, People's Republic of China
| | - Yong Pan
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, People's Republic of China
| | - Jianling Li
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, People's Republic of China
| | - Yali Zhang
- Institute of Bioengineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Faqing Ye
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, People's Republic of China
| | - Shulin Yang
- Institute of Bioengineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
| | - Hui Zhang
- Department of Pharmacy, The First Affiliated Hospital, Wenzhou Medical College, Wenzhou, People's Republic of China
| | - Xiaokun Li
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, People's Republic of China
- Norman Bethune College of Medical Science, Jilin University, Changchun, People's Republic of China
| | - Guang Liang
- Bioorganic and Medicinal Chemistry Research Center, School of Pharmaceutical Science, Wenzhou Medical College, Wenzhou, People's Republic of China
- Institute of Bioengineering, Nanjing University of Science and Technology, Nanjing, People's Republic of China
- * E-mail:
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48
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Wickremasinghe SS, Guymer RH, Wong TY, Kawasaki R, Wong W, Qureshi S. Retinal venular calibre dilatation after intravitreal ranibizumab treatment for neovascular age-related macular degeneration. Clin Exp Ophthalmol 2011; 40:59-66. [DOI: 10.1111/j.1442-9071.2011.02613.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Zhai R, Zhao Y, Liu G, Ter-Minassian M, Wu IC, Wang Z, Su L, Asomaning K, Chen F, Kulke MH, Lin X, Heist RS, Wain JC, Christiani DC. Interactions between environmental factors and polymorphisms in angiogenesis pathway genes in esophageal adenocarcinoma risk: a case-only study. Cancer 2011; 118:804-11. [PMID: 21751195 DOI: 10.1002/cncr.26325] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2011] [Revised: 03/28/2011] [Accepted: 05/13/2011] [Indexed: 12/17/2022]
Abstract
BACKGROUND Gastroesophageal reflux disease (GERD), higher body mass index (BMI), smoking, and genetic variants in angiogenic pathway genes have been individually associated with increased risk of esophageal adenocarcinoma. However, how angiogenic gene polymorphisms and environmental factors jointly affect esophageal adenocarcinoma development remains unclear. METHODS By using a case-only design (n = 335), the authors examined interactions between 141 functional/tagging angiogenic single nucleotide polymorphisms (SNPs) and environmental factors (GERD, BMI, smoking) in modulating esophageal adenocarcinoma risk. Gene-environment interactions were assessed by a 2-step approach. First, the authors applied random forest to screen for important SNPs that had either main or interaction effects. Second, they used case-only logistic regression to assess the effects of gene-environment interactions on esophageal adenocarcinoma risk, adjusting for covariates and false-discovery rate. RESULTS Random forest analyses identified 3 sets of SNPs (17 SNPs-GERD, 26 SNPs-smoking, and 34 SNPs-BMI) that had the highest importance scores. In subsequent logistic regression analyses, interactions between 2 SNPs (rs2295778 of HIF1AN, rs13337626 of TSC2) and GERD, 2 SNPs (rs2295778 of HIF1AN, rs2296188 of VEGFR1) and smoking, and 7 SNPs (rs2114039 of PDGRFA, rs2296188 of VEGFR1, rs11941492 of VEGFR1, rs17708574 of PDGFRB, rs7324547 of VEGFR1, rs17619601 of VEGFR1, and rs17625898 of VEGFR1) and BMI were significantly associated with esophageal adenocarcinoma development (all false-discovery rates ≤0.10). Moreover, these interactions tended to have SNP dose-response effects for increased esophageal adenocarcinoma risk with increasing number of combined risk genotypes. CONCLUSIONS These findings suggest that genetic variations in angiogenic genes may modify esophageal adenocarcinoma susceptibility through interactions with environmental factors in an SNP dose-response manner.
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Affiliation(s)
- Rihong Zhai
- Department of Environmental Health, Harvard School of Public Health, Boston, Massachusetts 02115, USA.
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Volpi G, Facchinetti F, Moretto N, Civelli M, Patacchini R. Cigarette smoke and α,β-unsaturated aldehydes elicit VEGF release through the p38 MAPK pathway in human airway smooth muscle cells and lung fibroblasts. Br J Pharmacol 2011; 163:649-61. [PMID: 21306579 PMCID: PMC3101625 DOI: 10.1111/j.1476-5381.2011.01253.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2010] [Revised: 11/09/2010] [Accepted: 01/04/2011] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND AND PURPOSE Vascular endothelial growth factor (VEGF) is an angiogenic factor known to be elevated in the sputum of asymptomatic smokers as well as smokers with bronchitis type of chronic obstructive pulmonary disease. The aim of this study was to investigate whether acute exposure to cigarette smoke extract altered VEGF production in lung parenchymal cells. EXPERIMENTAL APPROACH We exposed human airway smooth muscle cells (ASMC), normal human lung fibroblasts (NHLF) and small airways epithelial cells (SAEC) to aqueous cigarette smoke extract (CSE) in order to investigate the effect of cigarette smoke on VEGF expression and release. KEY RESULTS Vascular endothelial growth factor release was elevated by sub-toxic concentrations of CSE in both ASMC and NHLF, but not in SAEC. CSE-evoked VEGF release was mimicked by its component acrolein at concentrations (10-100 µM) found in CSE, and prevented by the antioxidant and α,β-unsaturated aldehyde scavenger, N-acetylcysteine (NAC). Both CSE and acrolein (30 µM) induced VEGF mRNA expression in ASMC cultures, suggesting an effect at transcriptional level. Crotonaldehyde and 4-hydroxy-2-nonenal, an endogenous α,β-unsaturated aldehyde, stimulated VEGF release, as did H(2)O(2). CSE-evoked VEGF release was accompanied by rapid and lasting phosphorylation of p38 MAPK (mitogen-activated protein kinase), which was abolished by NAC and mimicked by acrolein. Both CSE- and acrolein-evoked VEGF release were blocked by selective inhibition of p38 MAPK signalling. CONCLUSIONS AND IMPLICATIONS α,β-Unsaturated aldehydes and possibly reactive oxygen species contained in cigarette smoke stimulate VEGF expression and release from pulmonary cells through p38 MAPK signalling.
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Affiliation(s)
- Giorgia Volpi
- Department of Pharmacology, Chiesi Farmaceutici S.p.A., Parma, Italy
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