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Wu Z, Yu W, Luo J, Shen G, Cui Z, Ni W, Wang H. Comprehensive transcriptomic analysis unveils macrophage-associated genes for establishing an abdominal aortic aneurysm diagnostic model and molecular therapeutic framework. Eur J Med Res 2024; 29:323. [PMID: 38867262 PMCID: PMC11167832 DOI: 10.1186/s40001-024-01900-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 05/22/2024] [Indexed: 06/14/2024] Open
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA) is a highly lethal cardiovascular disease. The aim of this research is to identify new biomarkers and therapeutic targets for the treatment of such deadly diseases. METHODS Single-sample gene set enrichment analysis (ssGSEA) and CIBERSORT algorithms were used to identify distinct immune cell infiltration types between AAA and normal abdominal aortas. Single-cell RNA sequencing data were used to analyse the hallmark genes of AAA-associated macrophage cell subsets. Six macrophage-related hub genes were identified through weighted gene co-expression network analysis (WGCNA) and validated for expression in clinical samples and AAA mouse models. We screened potential therapeutic drugs for AAA through online Connectivity Map databases (CMap). A network-based approach was used to explore the relationships between the candidate genes and transcription factors (TFs), lncRNAs, and miRNAs. Additionally, we also identified hub genes that can effectively identify AAA and atherosclerosis (AS) through a variety of machine learning algorithms. RESULTS We obtained six macrophage hub genes (IL-1B, CXCL1, SOCS3, SLC2A3, G0S2, and CCL3) that can effectively diagnose abdominal aortic aneurysm. The ROC curves and decision curve analysis (DCA) were combined to further confirm the good diagnostic efficacy of the hub genes. Further analysis revealed that the expression of the six hub genes mentioned above was significantly increased in AAA patients and mice. We also constructed TF regulatory networks and competing endogenous RNA networks (ceRNA) to reveal potential mechanisms of disease occurrence. We also obtained two key genes (ZNF652 and UBR5) through a variety of machine learning algorithms, which can effectively distinguish abdominal aortic aneurysm and atherosclerosis. CONCLUSION Our findings depict the molecular pharmaceutical network in AAA, providing new ideas for effective diagnosis and treatment of diseases.
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Affiliation(s)
- Zhen Wu
- Department of Vascular and Interventional Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Weiming Yu
- Department of Vascular and Interventional Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
- General Surgery, Thyroid Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, 510000, Guangdong, China
| | - Jie Luo
- Department of Vascular and Interventional Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Guanghui Shen
- Department of Vascular and Interventional Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China
| | - Zhongqi Cui
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China
| | - Wenxuan Ni
- Department of Clinical Laboratory, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, 200072, China.
| | - Haiyang Wang
- Department of Vascular and Interventional Surgery, The First Affiliated Hospital of Harbin Medical University, Harbin, 150001, Heilongjiang, China.
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Mansouri M, Therasse E, Montagnon E, Zhan YO, Lessard S, Roy A, Boucher LM, Steinmetz O, Aslan E, Tang A, Chartrand-Lefebvre C, Soulez G. CT analysis of aortic calcifications to predict abdominal aortic aneurysm rupture. Eur Radiol 2024; 34:3903-3911. [PMID: 37999728 DOI: 10.1007/s00330-023-10429-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 09/12/2023] [Accepted: 09/28/2023] [Indexed: 11/25/2023]
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA) rupture prediction based on sex and diameter could be improved. The goal was to assess whether aortic calcification distribution could better predict AAA rupture through machine learning and LASSO regression. METHODOLOGY In this retrospective study, 80 patients treated for a ruptured AAA between January 2001 and August 2018 were matched with 80 non-ruptured patients based on maximal AAA diameter, age, and sex. Calcification volume and dispersion, morphologic, and clinical variables were compared between both groups using a univariable analysis with p = 0.05 and multivariable analysis through machine learning and LASSO regression. We used AUC for machine learning and odds ratios for regression to measure performance. RESULTS Mean age of patients was 74.0 ± 8.4 years and 89% were men. AAA diameters were equivalent in both groups (80.9 ± 17.5 vs 79.0 ± 17.3 mm, p = 0.505). Ruptured aneurysms contained a smaller number of calcification aggregates (18.0 ± 17.9 vs 25.6 ± 18.9, p = 0.010) and were less likely to have a proximal neck (45.0% vs 76.3%, p < 0.001). In the machine learning analysis, 5 variables were associated to AAA rupture: proximal neck, antiplatelet use, calcification number, Euclidian distance between calcifications, and standard deviation of the Euclidian distance. A follow-up LASSO regression was concomitant with the findings of the machine learning analysis regarding calcification dispersion but discordant on calcification number. CONCLUSION There might be more to AAA calcifications that what is known in the present literature. We need larger prospective studies to investigate if indeed, calcification dispersion affects rupture risk. CLINICAL RELEVANCE STATEMENT Ruptured aneurysms are possibly more likely to have their calcification volume concentrated in a smaller geographical area. KEY POINTS • Abdominal aortic aneurysm (AAA) rupture prediction based on sex and diameter could be improved. • For a given calcification volume, AAAs with well-distributed calcification clusters could be less likely to rupture. • A machine learning model including AAA calcifications better predicts rupture compared to a model based solely on maximal diameter and sex alone, although it might be prone to overfitting.
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Affiliation(s)
- Mohamed Mansouri
- Department of Radiology, McGill University Health Center (MUHC), Montréal, Québec, Canada
- Department of Diagnostic Radiology, Faculty of Medicine, McGill University, Montréal, Québec, Canada
| | - Eric Therasse
- Department of Radiology, Centre Hospitalier de L'Université de Montréal (CHUM), 1051 Rue Sanguinet, Montreal, QC, H2X 3E4, Canada
- Department of Radiology, Radiation Oncology and Nuclear Medicine, Université de Montréal, Montréal, Québec, Canada
- Laboratory of Clinical Imaging Processing, Centre Hospitalier de L'Université de Montréal (CHUM) Research Center (CRCHUM), Montréal, Québec, Canada
| | - Emmanuel Montagnon
- Laboratory of Clinical Imaging Processing, Centre Hospitalier de L'Université de Montréal (CHUM) Research Center (CRCHUM), Montréal, Québec, Canada
| | - Ying Olivier Zhan
- Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada
| | - Simon Lessard
- Laboratory of Clinical Imaging Processing, Centre Hospitalier de L'Université de Montréal (CHUM) Research Center (CRCHUM), Montréal, Québec, Canada
| | - Aubert Roy
- Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada
| | - Louis-Martin Boucher
- Department of Radiology, McGill University Health Center (MUHC), Montréal, Québec, Canada
- Department of Diagnostic Radiology, Faculty of Medicine, McGill University, Montréal, Québec, Canada
| | - Oren Steinmetz
- Department of Vascular Surgery, McGill University Health Center (MUHC), Montréal, Québec, Canada
- Department of Vascular Surgery, Faculty of Medicine, McGill University, Montréal, Québec, Canada
| | - Emre Aslan
- Faculty of Medicine, Université de Montréal, Montréal, Québec, Canada
| | - An Tang
- Department of Radiology, Centre Hospitalier de L'Université de Montréal (CHUM), 1051 Rue Sanguinet, Montreal, QC, H2X 3E4, Canada
- Department of Radiology, Radiation Oncology and Nuclear Medicine, Université de Montréal, Montréal, Québec, Canada
- Laboratory of Clinical Imaging Processing, Centre Hospitalier de L'Université de Montréal (CHUM) Research Center (CRCHUM), Montréal, Québec, Canada
| | - Carl Chartrand-Lefebvre
- Department of Radiology, Centre Hospitalier de L'Université de Montréal (CHUM), 1051 Rue Sanguinet, Montreal, QC, H2X 3E4, Canada
- Department of Radiology, Radiation Oncology and Nuclear Medicine, Université de Montréal, Montréal, Québec, Canada
- Laboratory of Clinical Imaging Processing, Centre Hospitalier de L'Université de Montréal (CHUM) Research Center (CRCHUM), Montréal, Québec, Canada
| | - Gilles Soulez
- Department of Radiology, Centre Hospitalier de L'Université de Montréal (CHUM), 1051 Rue Sanguinet, Montreal, QC, H2X 3E4, Canada.
- Department of Radiology, Radiation Oncology and Nuclear Medicine, Université de Montréal, Montréal, Québec, Canada.
- Laboratory of Clinical Imaging Processing, Centre Hospitalier de L'Université de Montréal (CHUM) Research Center (CRCHUM), Montréal, Québec, Canada.
- Institute of Biomedical Engineering, Université de Montréal, Montréal, Québec, Canada.
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Han Q, Qiao L, Yin L, Sui X, Shao W, Wang Q. The effect of exercise training intervention for patients with abdominal aortic aneurysm on cardiovascular and cardiorespiratory variables: an updated meta-analysis of randomized controlled trials. BMC Cardiovasc Disord 2024; 24:80. [PMID: 38291355 PMCID: PMC10829311 DOI: 10.1186/s12872-024-03745-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 01/22/2024] [Indexed: 02/01/2024] Open
Abstract
OBJECTIVE The purpose of this meta-analysis was to evaluate the effect of exercise training intervention in patients with abdominal aortic aneurysm (AAA). METHODS Eight randomized controlled trials (RCTs) that recruited 588 AAA patients were extracted using 4 databases (PubMed, Embase, Wanfang Data, and Cochrane Library). Physiological and biochemistry parameters that included in this study are high-sensitivity C-reactive protein (hs-CRP), respiratory peak oxygen uptake rate (VO2peak), triglyceride (TG), total cholesterol (TC), anaerobic threshold (AT), the diameter of AAA, high density lipoprotein cholesterol (HDL), low density lipoprotein cholesterol (LDL), and matrix metalloproteinase-9 (MMP-9). Standard mean difference (SMD) was used to assess the between group effect. RESULTS This meta-analysis was synthesized with findings from RCTs and found that hs-CRP (SMD, - 0.56 mg/dL; 95% CI: - 0.90 to 0.22; P = 0.001), VO2peak (SMD, 0.4 mL/kg/min; 95% CI, 0.21 to 0.60; P < 0.001), TG (SMD, - 0.39 mg/dL; 95% CI: - 0.02 to 0.77; P = 0.04), and AT (SMD, 0.75 mL/kg/min; 95% CI, 0.54 to 0.96; P < 0.001) were significantly improved in the exercise groups, while the size of AAA (SMD, - 0.15; 95% CI: - 0.36 to 0.06; P = 0.15), TC (SMD, 0.16 mg/dL; 95% CI: - 0.10 to 0.42; P = 0.23), HDL/LDL ratio (SMD, - 0.06; 95% CI: - 0.32 to 0.20; P = 0.64), HDL (SMD, - 0.09; 95% CI: - 0.39 to 0.20; P = 0.54), LDL (SMD, 0.08; 95% CI: - 0.21 to 0.38; P = 0.59), and MMP-9 (SMD, - 0.23 mg/dL; 95% CI: - 0.53 to 0.06; P = 0.12) did not differ in the exercise groups compared with the controls. CONCLUSION Exercise intervention improved some of the CVD risk factors but not all, hs-CRP, VO2peak and AT were significantly improved after exercise intervention, while, changes of MMP-9, the size of AAA, and the overall lipids profile were not. Exercise intervention provides an additional solution for improving cardiorespiratory capacity and health status among AAA patients, and might lead to a delay of AAA progression.
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Affiliation(s)
- Qi Han
- Sports Nutrition Center, National Institute of Sports Medicine, Beijing, 100029, China
- Beijing Sport University, Beijing, 100084, China
| | - Li Qiao
- Beijing Competitor Sports Nutrition Research Institute, Beijing, 100029, China
| | - Li Yin
- Department of Vascular Surgery, The Second Affiliated Hospital of Zhejiang University, School of Medicine, Hangzhou, 310020, China
- Department of Surgery, Northwestern University, Chicago, IL, 60611, USA
| | - Xuemei Sui
- Department of Exercise Science, Arnold School of Public Health, University of South Carolina, Columbia, SC, 29208, USA
| | - Wenjuan Shao
- Beijing Sport University, Beijing, 100084, China
- Minzu University of China, Beijing, 100081, China
| | - Qirong Wang
- Sports Nutrition Center, National Institute of Sports Medicine, Beijing, 100029, China.
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Hensley SE, Upchurch GR. Repair of Abdominal Aortic Aneurysms: JACC Focus Seminar, Part 1. J Am Coll Cardiol 2022; 80:821-831. [PMID: 35981826 DOI: 10.1016/j.jacc.2022.04.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 03/29/2022] [Accepted: 04/05/2022] [Indexed: 10/15/2022]
Abstract
Abdominal aortic aneurysms (AAAs), defined by an aortic diameter >3 cm, affect >1 million people in the United States. Risk factors for AAA include male sex, family history of AAA, smoking, Caucasian ethnicity, and age. Patients with known AAA should undergo regular surveillance via ultrasonography. Medical management, including smoking cessation and blood pressure management, is recommended for asymptomatic patients who do not meet the threshold for intervention. Repair options include endovascular aortic repair and open surgical repair, with good outcomes in long-term follow-up. Men with AAA >5.5 cm and women with AAA >5.0 cm in general should undergo elective repair. Medical management, including smoking cessation and blood pressure management, is recommended for asymptomatic patients who do not meet the threshold for intervention.
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Affiliation(s)
- Sara E Hensley
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida, USA.
| | - Gilbert R Upchurch
- Department of Surgery, University of Florida College of Medicine, Gainesville, Florida, USA
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Gao H, Wang L, Ren J, Liu Y, Liang S, Zhang B, Sun X. Interleukin 2 receptor subunit beta as a novel hub gene plays a potential role in the immune microenvironment of abdominal aortic aneurysms. Gene 2022; 827:146472. [PMID: 35381314 DOI: 10.1016/j.gene.2022.146472] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2022] [Revised: 03/23/2022] [Accepted: 03/31/2022] [Indexed: 12/14/2022]
Abstract
BACKGROUND Abdominal aortic aneurysm (AAA) is potentially life threatening and characterized by immune-inflammatory cell infiltration and extracellular matrix degradation. Currently, pharmacotherapy mainly aims to control risk factors without reversion of the dilated aorta. This study analyzed the immune-inflammatory response and identified the immune-related hub genes of AAA. METHOD Gene Expression Omnibus datasets (GSE57691, GSE47472 and GSE7084) were downloaded. After identification of GSE57691 differentially expressed genes (DEGs), weighted gene co-expression network analysis of the DEGs was performed. Through enrichment analysis of each module and screening in Immunology Database and Analysis Portal, immune-related hub genes were identified via protein-protein interaction (PPI) network construction and lasso regression. CIBERSORT was utilized to analyze AAA immune infiltration. The correlations between the immune-related hub genes and infiltrating immune cells were investigated. Receiver operating characteristic (ROC) curve analysis was performed to determine immune-related hub gene cutoff values, which were validated in GSE47472 and GSE7084. RESULT In GSE57691, 1,018 DEGs were identified. Five modules were identified in the co-expression network. The blue and green modules were found to be related to immune-inflammatory responses, and 61 immune-related genes were identified. PPI and lasso regression analyses identified FOS, IL-6 and IL2RB as AAA immune-related hub genes. CIBERSORT analysis indicated significantly increased infiltration of naive B cells, memory activated CD4 T cells, follicular helper T cells, monocytes and M1 macrophages and significantly decreased infiltration of M2 macrophages in AAA compared with normal samples. IL2RB was more strongly associated with immune infiltration in AAA than were FOS and IL6. The IL2RB area under the ROC curve (AUC) value was > 0.9 in both the training and validation set, demonstrating its strong, stable diagnostic value in AAA. CONCLUSION AAA and normal samples had different immune infiltration statuses. IL2RB was identified as an immune-related hub gene and a potential hub gene with significant diagnostic value in AAA.
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Affiliation(s)
- Haoyu Gao
- Department of Cardiovascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Luchen Wang
- Department of Cardiovascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Jie Ren
- Department of Cardiovascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yanxiang Liu
- Department of Cardiovascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shenghua Liang
- Department of Cardiovascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Bowen Zhang
- Department of Cardiovascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaogang Sun
- Department of Cardiovascular Surgery, State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Sánchez-Infantes D, Nus M, Navas-Madroñal M, Fité J, Pérez B, Barros-Membrilla AJ, Soto B, Martínez-González J, Camacho M, Rodriguez C, Mallat Z, Galán M. Oxidative Stress and Inflammatory Markers in Abdominal Aortic Aneurysm. Antioxidants (Basel) 2021; 10:602. [PMID: 33919749 PMCID: PMC8070751 DOI: 10.3390/antiox10040602] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2021] [Revised: 04/08/2021] [Accepted: 04/12/2021] [Indexed: 12/18/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) is increasing due to aging of the population and is a major cause of death among the elderly. Ultrasound screening programs are useful in early diagnosis, but aneurysm size is not always a good predictor of rupture. Our aim was to analyze the value of circulating molecules related to oxidative stress and inflammation as new biomarkers to assist the management of AAA. The markers were quantified by ELISA, and their expression in the aneurysmal wall was studied by real-time PCR and by immunostaining. Correlation analysis of the studied markers with aneurysm diameter and peak wall stress (PWS), obtained by finite element analysis, and multivariate regression analysis to assess potential confounding factors were performed. Our study shows an extensive inflammatory infiltration in the aneurysmal wall, mainly composed by T-cells, macrophages and B-cells and altered levels of reactive oxygen species (ROS), IgM, IgG, CD38, GDF15, S100A4 and CD36 in plasma and in the aneurysmal tissue of AAA patients compared with controls. Circulating levels of IgG, CD38 and GDF15 positively correlated with abdominal aortic diameter, and CD38 was correlated with PWS. Our data show that altered levels of IgG, CD38 and GDF15 have potential diagnostic value in the assessment of AAA.
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Affiliation(s)
- David Sánchez-Infantes
- Department of Basic Sciences of Health, Area of Biochemistry and Molecular Biology, University Rey Juan Carlos, 28922 Alcorcón, Spain;
- Centro de Investigación Biomédica en Red-Fisiopatología de la Obesidad y Nutrición (CIBEROBN), ISCIII, 28029 Madrid, Spain
| | - Meritxell Nus
- Division of Cardiovascular Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; (M.N.); (Z.M.)
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
| | - Miquel Navas-Madroñal
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
| | - Joan Fité
- Servicio de Angiología, Cirugía Vascular y Endovascular, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain; (J.F.); (B.S.)
| | - Belén Pérez
- Faculty of Medicine, Universidad Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain;
| | - Antonio J. Barros-Membrilla
- Unidad Funcional de Patología de la Aorta (UPA), Servicio de Cardiología, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
| | - Begoña Soto
- Servicio de Angiología, Cirugía Vascular y Endovascular, Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain; (J.F.); (B.S.)
| | - José Martínez-González
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
- Instituto de Investigaciones Biomédicas de Barcelona-Consejo Superior de Investigaciones Científicas (IIBB-CSIC), 08036 Barcelona, Spain
| | - Mercedes Camacho
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
| | - Cristina Rodriguez
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
| | - Ziad Mallat
- Division of Cardiovascular Medicine, University of Cambridge, Cambridge CB2 0QQ, UK; (M.N.); (Z.M.)
| | - María Galán
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), ISCIII, 28029 Madrid, Spain; (J.M.-G.); (M.C.); (C.R.)
- Institut de Recerca del Hospital de la Santa Creu i Sant Pau, 08041 Barcelona, Spain;
- Instituto de Investigación Biomédica Sant Pau (IB Sant Pau), 08025 Barcelona, Spain
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7
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Ishida Y, Kuninaka Y, Nosaka M, Kimura A, Taruya A, Furuta M, Mukaida N, Kondo T. Prevention of CaCl 2-induced aortic inflammation and subsequent aneurysm formation by the CCL3-CCR5 axis. Nat Commun 2020; 11:5994. [PMID: 33239616 PMCID: PMC7688638 DOI: 10.1038/s41467-020-19763-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 10/29/2020] [Indexed: 11/27/2022] Open
Abstract
Inflammatory mediators such as cytokines and chemokines are crucially involved in the development of abdominal aortic aneurysm (AAA). Here we report that CaCl2 application into abdominal aorta induces AAA with intra-aortic infiltration of macrophages as well as enhanced expression of chemokine (C-C motif) ligand 3 (CCL3) and MMP-9. Moreover, infiltrating macrophages express C-C chemokine receptor 5 (CCR5, a specific receptor for CCL3) and MMP-9. Both Ccl3−/− mice and Ccr5−/− but not Ccr1−/− mice exhibit exaggerated CaCl2-inducced AAA with augmented macrophage infiltration and MMP-9 expression. Similar observations are also obtained on an angiotensin II-induced AAA model. Immunoneutralization of CCL3 mimics the phenotypes observed in CaCl2-treated Ccl3−/− mice. On the contrary, CCL3 treatment attenuates CaCl2-induced AAA in both wild-type and Ccl3−/− mice. Consistently, we find that the CCL3–CCR5 axis suppresses PMA-induced enhancement of MMP-9 expression in macrophages. Thus, CCL3 can be effective to prevent the development of CaCl2-induced AAA by suppressing MMP-9 expression. Inflammatory cytokines and chemokines are involved in the development of abdominal aortic aneurysm (AAA). Here the authors show that CCL3 prevents the development of CaCl2-induced AAA by suppressing MMP-9 expression.
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Affiliation(s)
- Yuko Ishida
- Department of Forensic Medicine, Wakayama Medical University, Wakayama, Japan
| | - Yumi Kuninaka
- Department of Forensic Medicine, Wakayama Medical University, Wakayama, Japan
| | - Mizuho Nosaka
- Department of Forensic Medicine, Wakayama Medical University, Wakayama, Japan
| | - Akihiko Kimura
- Department of Forensic Medicine, Wakayama Medical University, Wakayama, Japan
| | - Akira Taruya
- Department of Cardiovascular Medicine, Wakayama Medical University, Wakayama, Japan
| | - Machi Furuta
- Department of Clinical Laboratory Medicine, Wakayama Medical University, Wakayama, Japan
| | - Naofumi Mukaida
- Division of Molecular Bioregulation, Cancer Research Institute, Kanazawa University, Kanazawa, Japan
| | - Toshikazu Kondo
- Department of Forensic Medicine, Wakayama Medical University, Wakayama, Japan.
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8
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Golledge J, Moxon JV, Singh TP, Bown MJ, Mani K, Wanhainen A. Lack of an effective drug therapy for abdominal aortic aneurysm. J Intern Med 2020; 288:6-22. [PMID: 31278799 DOI: 10.1111/joim.12958] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Abdominal aortic aneurysm (AAA) rupture is a common cause of death in adults. Current AAA treatment is by open surgical or endovascular aneurysm repair. Rodent model and human epidemiology, and genetic and observational studies over the last few decades have highlighted the potential of a number of drug therapies, including medications that lower blood pressure, correct dyslipidaemia, or inhibit thrombosis, inflammation or matrix remodelling, as approaches to managing small AAA. This review summarizes prior AAA pathogenesis data from animal and human studies aimed at identifying targets for the development of drug therapies. The review also systematically assesses past randomized placebo-controlled drug trials in patients with small AAAs. Eleven previously published randomized-controlled clinical trials testing different drug therapies aimed at slowing AAA progression were identified. Five of the trials tested antibiotics and three trials assessed medications that lower blood pressure. Meta-analyses of these trials suggested that neither of these approaches limit AAA growth. Allocation to blood pressure-lowering medication was associated with a small reduction in AAA rupture or repair, compared to placebo (relative risk 0.94, 95% confidence intervals 0.89, 1.00, P = 0.047). Three further trials assessed the effect of a mast cell inhibitor, fibrate or platelet aggregation inhibition and reported no effect on AAA growth or clinical events. Past trials were noted to have a number of design issues, particularly small sample sizes and limited follow-up. Much larger trials are needed to properly test potential therapeutic approaches if a convincingly effective medical therapy for AAA is to be identified.
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Affiliation(s)
- J Golledge
- From the, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Qld, Australia.,The Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Qld, Australia.,Centre for Molecular Therapeutics, The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Qld, Australia
| | - J V Moxon
- From the, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Qld, Australia.,Centre for Molecular Therapeutics, The Australian Institute of Tropical Health and Medicine, James Cook University, Townsville, Qld, Australia
| | - T P Singh
- From the, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Qld, Australia.,The Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Qld, Australia
| | - M J Bown
- Department of Cardiovascular Sciences and NIHR Leicester Biomedical Research Centre, University of Leicester, Leicester, UK
| | - K Mani
- Department of Surgical Sciences, Vascular Surgery, Uppsala University, Uppsala, Sweden
| | - A Wanhainen
- Department of Surgical Sciences, Vascular Surgery, Uppsala University, Uppsala, Sweden
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Ahmad AF, Dwivedi G, O'Gara F, Caparros-Martin J, Ward NC. The gut microbiome and cardiovascular disease: current knowledge and clinical potential. Am J Physiol Heart Circ Physiol 2019; 317:H923-H938. [PMID: 31469291 DOI: 10.1152/ajpheart.00376.2019] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Cardiovascular disease (CVD) is the leading cause of death worldwide. The human body is populated by a diverse community of microbes, dominated by bacteria, but also including viruses and fungi. The largest and most complex of these communities is located in the gastrointestinal system and, with its associated genome, is known as the gut microbiome. Gut microbiome perturbations and related dysbiosis have been implicated in the progression and pathogenesis of CVD, including atherosclerosis, hypertension, and heart failure. Although there have been advances in the characterization and analysis of the gut microbiota and associated bacterial metabolites, the exact mechanisms through which they exert their action are not well understood. This review will focus on the role of the gut microbiome and associated functional components in the development and progression of atherosclerosis. Potential treatments to alter the gut microbiome to prevent or treat atherosclerosis and CVD are also discussed.
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Affiliation(s)
- Adilah F Ahmad
- Medical School, University of Western Australia, Perth, Western Australia, Australia.,Department of Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Perth, Western Australia, Australia
| | - Girish Dwivedi
- Medical School, University of Western Australia, Perth, Western Australia, Australia.,Department of Advanced Clinical and Translational Cardiovascular Imaging, Harry Perkins Institute of Medical Research, Perth, Western Australia, Australia.,Department of Cardiology, Fiona Stanley Hospital, Murdoch, Western Australia, Australia
| | - Fergal O'Gara
- School of Pharmacy and Biomedical Sciences, Curtin University, Perth, Western Australia, Australia.,Curtin Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia.,BIOMERIT Research Centre, School of Microbiology, University College Cork, National University of Ireland, Cork, Ireland.,Telethon Kids Institute, Children's Hospital, Perth, Western Australia, Australia
| | - Jose Caparros-Martin
- School of Pharmacy and Biomedical Sciences, Curtin University, Perth, Western Australia, Australia.,Curtin Health Innovation Research Institute, Curtin University, Perth, Western Australia, Australia
| | - Natalie C Ward
- Medical School, University of Western Australia, Perth, Western Australia, Australia.,School of Public Health, Curtin University, Perth Western Australia, Australia
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10
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Rowbotham SE, Pinchbeck JL, Anderson G, Bourke B, Bourke M, Gasser TC, Jaeggi R, Jenkins JS, Moran CS, Morton SK, Reid CM, Velu R, Yip L, Moxon JV, Golledge J. Inositol in the MAnaGemENt of abdominal aortic aneurysm (IMAGEN): study protocol for a randomised controlled trial. Trials 2017; 18:547. [PMID: 29145894 PMCID: PMC5692794 DOI: 10.1186/s13063-017-2304-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 10/31/2017] [Indexed: 12/20/2022] Open
Abstract
Background An abdominal aortic aneurysm (AAA) is a focal dilation of the abdominal aorta and is associated with a risk of fatal rupture. Experimental studies suggest that myo-inositol may exert beneficial effects on AAAs through favourable changes to biological pathways implicated in AAA pathology. The aim of the Inositol in the MAnaGemENt of abdominal aortic aneurysm (IMAGEN) trial is to assess if myo-inositol will reduce AAA growth. Methods/design IMAGEN is a multi-centre, prospective, parallel-group, randomised, double-blind, placebo-controlled trial. A total of 164 participants with an AAA measuring ≥ 30 mm will be randomised to either 2 g of myo-inositol or identical placebo twice daily for 12 months. The primary outcome measure will be AAA growth estimated by increase in total infrarenal aortic volume measured on computed tomographic scans. Secondary outcome measures will include AAA diameter assessed by computed tomography and ultrasound, AAA peak wall stress and peak wall rupture index, serum lipids, circulating AAA biomarkers, circulating RNAs and health-related quality of life. All analysis will be based on the intention-to-treat principle at the time of randomisation. All patients who meet the eligibility criteria, provide written informed consent and are enrolled in the study will be included in the primary analysis, regardless of adherence to dietary allocation. Discussion Currently, there is no known medical therapy to limit AAA progression. The IMAGEN trial will be the first randomised trial, to our knowledge, to assess the value of myo-inositol in limiting AAA growth. Trial registration Australian New Zealand Clinical Trials Registry, ACTRN12615001209583. Registered on 6 November 2015. Electronic supplementary material The online version of this article (doi:10.1186/s13063-017-2304-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Sophie E Rowbotham
- School of Medicine, The University of Queensland, Herston, QLD, 4006, Australia.,Department of Vascular Surgery, The Royal Brisbane and Women's Hospital, Herston, QLD, 4029, Australia.,Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Jenna L Pinchbeck
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Georgina Anderson
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Bernie Bourke
- Gosford Vascular Services, Gosford, NSW, 2250, Australia
| | - Michael Bourke
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia.,Gosford Vascular Services, Gosford, NSW, 2250, Australia
| | - T Christian Gasser
- Department of Solid Mechanics, School of Engineering Sciences, KTH Royal Institute of Technology, 100 44, Stockholm, Sweden
| | - Rene Jaeggi
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Jason S Jenkins
- Department of Vascular Surgery, The Royal Brisbane and Women's Hospital, Herston, QLD, 4029, Australia
| | - Corey S Moran
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Susan K Morton
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Christopher M Reid
- School of Public Health, Curtin University, Perth, WA, 6000, Australia.,School of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, 3004, Australia
| | - Ramesh Velu
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia.,Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, 4811, Australia
| | - Lisan Yip
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Joseph V Moxon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, QLD, 4811, Australia. .,Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, 4811, Australia.
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11
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Liang B, Che J, Zhao H, Zhang Z, Shi G. MiR-195 promotes abdominal aortic aneurysm media remodeling by targeting Smad3. Cardiovasc Ther 2017; 35. [PMID: 28665537 DOI: 10.1111/1755-5922.12286] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 06/19/2017] [Accepted: 06/27/2017] [Indexed: 12/16/2022] Open
Affiliation(s)
- Bing Liang
- Department of Cardiothoracic Surgery; Huaihe Hospital of Henan University; Kaifeng China
| | - Jianbo Che
- Department of Cardiothoracic Surgery; Huaihe Hospital of Henan University; Kaifeng China
| | - Hui Zhao
- Department of Cardiothoracic Surgery; Huaihe Hospital of Henan University; Kaifeng China
| | - Zhi Zhang
- Department of Cardiothoracic Surgery; Huaihe Hospital of Henan University; Kaifeng China
| | - Gongning Shi
- Department of Cardiothoracic Surgery; Huaihe Hospital of Henan University; Kaifeng China
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12
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Matthews EO, Rowbotham SE, Moxon JV, Jones RE, Vega de Ceniga M, Golledge J. Meta-analysis of the association between peripheral artery disease and growth of abdominal aortic aneurysms. Br J Surg 2017; 104:1765-1774. [DOI: 10.1002/bjs.10675] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/14/2017] [Accepted: 07/11/2017] [Indexed: 12/23/2022]
Abstract
Abstract
Background
The role of atherosclerosis in the pathogenesis of abdominal aortic aneurysm (AAA) is controversial. Atherosclerosis-associated peripheral artery disease (PAD) has been reported to be a risk factor for AAA in population screening studies; its relationship with AAA growth is controversial.
Methods
A systematic search of MEDLINE, Scopus, CINAHL and the Cochrane Central Register of Controlled Trials was conducted in April 2016 and repeated in January 2017. Databases were screened for studies reporting AAA growth rates in patients with, and without PAD. The included studies underwent quality assessment and, where possible, were included in the meta-analysis. A subgroup analysis was performed, including only studies that adjusted for confounding factors.
Results
Seventeen studies, including a total of 4873 patients, met the review entry criteria. Data from 15 studies were included in the meta-analysis. There was marked heterogeneity in study design, methodology and statistical analyses used. In the main analysis, PAD was associated with reduced AAA growth (mean difference – 0·13, 95 per cent c.i. –0·27 to –0·00; P = 0·04). However, statistical significance was not maintained in sensitivity analysis. In a subanalysis that included only data adjusted for other risk factors, no significant association between PAD and AAA growth was found (mean difference –0·11, –0·23 to 0·00; P = 0·05).
Conclusion
This systematic review suggests that currently reported studies demonstrate no robust and consistent association between PAD and reduced AAA growth.
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Affiliation(s)
- E O Matthews
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, Townsville, Queensland, Australia
| | - S E Rowbotham
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, Townsville, Queensland, Australia
- School of Medicine, University of Queensland, Herston, Queensland, Australia
- Department of Vascular Surgery, Royal Brisbane and Women's Hospital, Herston, Queensland, Australia
| | - J V Moxon
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, Townsville, Queensland, Australia
| | - R E Jones
- Division of Tropical Health and Medicine, James Cook University, Townsville, Queensland, Australia
| | - M Vega de Ceniga
- Department of Angiology and Vascular Surgery, Hospital de Galdakao-Usansolo, Bizkaia, Spain
| | - J Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, Townsville, Queensland, Australia
- Department of Vascular and Endovascular Surgery, Townsville Hospital, Townsville, Queensland, Australia
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13
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Kawai T, Takayanagi T, Forrester SJ, Preston KJ, Obama T, Tsuji T, Kobayashi T, Boyer MJ, Cooper HA, Kwok HF, Hashimoto T, Scalia R, Rizzo V, Eguchi S. Vascular ADAM17 (a Disintegrin and Metalloproteinase Domain 17) Is Required for Angiotensin II/β-Aminopropionitrile-Induced Abdominal Aortic Aneurysm. Hypertension 2017; 70:959-963. [PMID: 28947615 DOI: 10.1161/hypertensionaha.117.09822] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2017] [Revised: 06/22/2017] [Accepted: 08/31/2017] [Indexed: 01/05/2023]
Abstract
Angiotensin II (AngII)-activated epidermal growth factor receptor has been implicated in abdominal aortic aneurysm (AAA) development. In vascular smooth muscle cells (VSMCs), AngII activates epidermal growth factor receptor via a metalloproteinase, ADAM17 (a disintegrin and metalloproteinase domain 17). We hypothesized that AngII-dependent AAA development would be prevented in mice lacking ADAM17 in VSMCs. To test this concept, control and VSMC ADAM17-deficient mice were cotreated with AngII and a lysyl oxidase inhibitor, β-aminopropionitrile, to induce AAA. We found that 52.4% of control mice did not survive because of aortic rupture. All other surviving control mice developed AAA and demonstrated enhanced expression of ADAM17 in the AAA lesions. In contrast, all AngII and β-aminopropionitrile-treated VSMC ADAM17-deficient mice survived and showed reduction in external/internal diameters (51%/28%, respectively). VSMC ADAM17 deficiency was associated with lack of epidermal growth factor receptor activation, interleukin-6 induction, endoplasmic reticulum/oxidative stress, and matrix deposition in the abdominal aorta of treated mice. However, both VSMC ADAM17-deficient and control mice treated with AngII and β-aminopropionitrile developed comparable levels of hypertension. Treatment of C57Bl/6 mice with an ADAM17 inhibitory antibody but not with control IgG also prevented AAA development. In conclusion, VSMC ADAM17 silencing or systemic ADAM17 inhibition seems to protect mice from AAA formation. The mechanism seems to involve suppression of epidermal growth factor receptor activation.
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Affiliation(s)
- Tatsuo Kawai
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Takehiko Takayanagi
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Steven J Forrester
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Kyle J Preston
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Takashi Obama
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Toshiyuki Tsuji
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Tomonori Kobayashi
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Michael J Boyer
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Hannah A Cooper
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Hang Fai Kwok
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Tomoki Hashimoto
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Rosario Scalia
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.)
| | - Victor Rizzo
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.).
| | - Satoru Eguchi
- From the Cardiovascular Research Center, Department of Physiology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA (T. Kawai, T. Takayanagi, S.J.F., K.J.P., T.O., T. Tsuji, T. Kobayashi, M.J.B., H.A.C., R.S., V.R., S.E.); Faculty of Health Sciences, Macau Special Administrative Region, University of Macau, Taipa (H.F.K.); and Department of Anesthesia and Perioperative Care, University of California, San Francisco (T.H.).
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14
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Krishna SM, Seto SW, Jose R, Li J, Moxon J, Clancy P, Crossman DJ, Norman P, Emeto TI, Golledge J. High serum thrombospondin-1 concentration is associated with slower abdominal aortic aneurysm growth and deficiency of thrombospondin-1 promotes angiotensin II induced aortic aneurysm in mice. Clin Sci (Lond) 2017; 131:1261-1281. [PMID: 28364044 DOI: 10.1042/cs20160970] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2016] [Revised: 03/23/2017] [Accepted: 03/31/2017] [Indexed: 12/16/2023]
Abstract
Abdominal aortic aneurysm (AAA) is a common age-related vascular disease characterized by progressive weakening and dilatation of the aortic wall. Thrombospondin-1 (TSP-1; gene Thbs1) is a member of the matricellular protein family important in the control of extracellular matrix (ECM) remodelling. In the present study, the association of serum TSP-1 concentration with AAA progression was assessed in 276 men that underwent repeated ultrasound for a median 5.5 years. AAA growth was negatively correlated with serum TSP-1 concentration (Spearman's rho -0.129, P=0.033). Men with TSP-1 in the highest quartile had a reduced likelihood of AAA growth greater than median during follow-up (OR: 0.40; 95% confidence interval (CI): 0.19-0.84, P=0.016, adjusted for other risk factors). Immunohistochemical staining for TSP-1 was reduced in AAA body tissues compared with the relatively normal AAA neck. To further assess the role of TSP-1 in AAA initiation and progression, combined TSP-1 and apolipoprotein deficient (Thbs1-/-ApoE-/-, n=20) and control mice (ApoE-/-, n=20) were infused subcutaneously with angiotensin II (AngII) for 28 days. Following AngII infusion, Thbs1-/- ApoE-/- mice had larger AAAs by ultrasound (P=0.024) and ex vivo morphometry measurement (P=0.006). The Thbs1-/-ApoE-/- mice also showed increased elastin filament degradation along with elevated systemic levels and aortic expression of matrix metalloproteinase (MMP)-9. Suprarenal aortic segments and vascular smooth muscle cells (VSMCs) isolated from Thbs1-/-ApoE-/- mice showed reduced collagen 3A1 gene expression. Furthermore, Thbs1-/-ApoE-/- mice had reduced aortic expression of low-density lipoprotein (LDL) receptor-related protein 1. Collectively, findings from the present study suggest that TSP-1 deficiency promotes maladaptive remodelling of the ECM leading to accelerated AAA progression.
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MESH Headings
- Angiotensin II
- Animals
- Aorta, Abdominal/diagnostic imaging
- Aorta, Abdominal/metabolism
- Aorta, Abdominal/pathology
- Aortic Aneurysm, Abdominal/blood
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/metabolism
- Aortic Aneurysm, Abdominal/prevention & control
- Apolipoproteins E/deficiency
- Apolipoproteins E/genetics
- Biomarkers/blood
- Cells, Cultured
- Collagen Type III/genetics
- Collagen Type III/metabolism
- Disease Models, Animal
- Disease Progression
- Elastin/metabolism
- Genetic Predisposition to Disease
- Humans
- Low Density Lipoprotein Receptor-Related Protein-1
- Male
- Matrix Metalloproteinase 9/genetics
- Matrix Metalloproteinase 9/metabolism
- Mice, Knockout
- Odds Ratio
- Phenotype
- Proteolysis
- Receptors, LDL/genetics
- Receptors, LDL/metabolism
- Risk Factors
- Thrombospondin 1/blood
- Thrombospondin 1/deficiency
- Thrombospondin 1/genetics
- Time Factors
- Tumor Suppressor Proteins/genetics
- Tumor Suppressor Proteins/metabolism
- Ultrasonography
- Vascular Remodeling
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Affiliation(s)
- Smriti Murali Krishna
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
| | - Sai Wang Seto
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
- National Institute of Complementary Medicine (NICM), School of Science and Health, University of Western Sydney, Campbelltown, NSW, Australia
| | - Roby Jose
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
| | - Jiaze Li
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
| | - Joseph Moxon
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
| | - Paula Clancy
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
| | - David J Crossman
- Department of Physiology,Faculty of Medical and Health Sciences, Biophysics and Biophotonics Research Group, The University of Auckland, Auckland, New Zealand
| | - Paul Norman
- School of Surgery, University of Western Australia, Perth, WA 6907, Australia
| | - Theophilus I Emeto
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
- Public Health and Tropical Medicine, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, Queensland 4811, Australia
| | - Jonathan Golledge
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland 4811, Australia
- Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Australia
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15
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Iyer V, Rowbotham S, Biros E, Bingley J, Golledge J. A systematic review investigating the association of microRNAs with human abdominal aortic aneurysms. Atherosclerosis 2017; 261:78-89. [DOI: 10.1016/j.atherosclerosis.2017.03.010] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/18/2016] [Revised: 03/02/2017] [Accepted: 03/06/2017] [Indexed: 12/24/2022]
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16
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Li W, Luo S, Luo J, Liu Y, Ning B, Huang W, Xue L, Chen J. Predictors Associated With Increased Prevalence of Abdominal Aortic Aneurysm in Chinese Patients with Atherosclerotic Risk Factors. Eur J Vasc Endovasc Surg 2017; 54:43-49. [PMID: 28527818 DOI: 10.1016/j.ejvs.2017.04.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2016] [Accepted: 04/10/2017] [Indexed: 01/16/2023]
Abstract
OBJECTIVE/BACKGROUND Epidemiological screening studies have demonstrated that the prevalence of abdominal aortic aneurysm (AAA) of Asian origin appears to be low and so increases uncertainty about the cost effectiveness of screening for AAAs in Chinese people. Some studies have demonstrated a higher prevalence of AAA in patients with atherosclerotic risk factors. The purpose of the study was to determine the prevalence of AAA and to explore the high risk group of AAA in Chinese patients with atherosclerotic risk factors. METHODS From November 2014 to July 2015, a prospective observational study was conducted in Guangdong General Hospital. In total, 1582 consecutive patients with atherosclerotic risk factors and undergoing coronary angiography for suspected or known coronary artery disease were enrolled to be screened for AAA by abdominal aortic ultrasound. Because of inadequate ultrasound image quality, the analysis was based on the 1541 (97.4%) patients whose abdominal aortic ultrasound images were adequate. RESULTS The prevalence of AAA was 1.6% in the whole study population and 2.9% in male patients aged over 65 years. In multivariate analysis, age ≥ 65 years (p = .029), smoking (p = .037), hypertension (p = .026), and aortic root diameter > 30 mm (p = .003) were independent predictors of AAA. The prevalence of AAA was 0% (0/153) in patients without any independent predictor, 0.6% (3/502) in patients with one predictor, 1.0% (6/597) in patients with two predictors, 4.8% (12/249) in patients with three predictors, and up to 10% (4/40) in patients with four predictors (p<.001; p value for trend < .001). CONCLUSION Age ≥ 65 years, smoking, hypertension, and aortic root diameter > 30 mm emerged as independent predictors of AAA in Chinese patients. Stepwise increases in the prevalence of AAA were found to depend on the number of independent predictors. Ultrasound screening for AAA could be considered in these high risk patients, especially those with three or four predictors.
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Affiliation(s)
- W Li
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China; Southern Medical University, Guangzhou, People's Republic of China
| | - S Luo
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - J Luo
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China.
| | - Y Liu
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - B Ning
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - W Huang
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - L Xue
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
| | - J Chen
- Department of Cardiology, Guangdong Cardiovascular Institute, Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, People's Republic of China
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Busch A, Grimm C, Hartmann E, Paloschi V, Kickuth R, Lengquist M, Otto C, Eriksson P, Kellersmann R, Lorenz U, Maegdefessel L. Vessel wall morphology is equivalent for different artery types and localizations of advanced human aneurysms. Histochem Cell Biol 2017; 148:425-433. [PMID: 28478588 DOI: 10.1007/s00418-017-1575-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2017] [Indexed: 12/11/2022]
Abstract
Aneurysm formation occurs most frequently as abdominal aortic aneurysm (AAA), but is also seen in other localizations like thoracic or peripheral aneurysm. While initial mechanisms for aneurysm induction remain elusive, observations from AAA samples show transmural inflammation with proteolytic imbalance and repair mechanisms triggered by the innate immune system. However, limited knowledge exists about aneurysm pathology, especially for others than AAA. We compared 42 AAA, 15 popliteal, 3 ascending aortic, five iliac, two femoral, two brachial, one visceral and two secondary aneurysms to non-aneurysmatic controls by histologic analysis, immunohistochemistry and cytokine expression. Muscular and elastic type arteries show a uniform way of aneurysm formation. All samples show similar morphology. The changes compared to controls are distinct and include matrix remodeling with smooth muscle cell phenotype switch and angiogenesis, adventitial lymphoid cell accumulation and M1 macrophage homing together with neutrophil inflammation. Inflammatory cytokines are up-regulated accordingly. Comparative analysis of different disease entities can identify characteristic pathomechanisms. The phenotype of human advanced aneurysm disease is observed for elastic and muscular type arteries, does not differ between disease localizations and might, thus, be a unique response of the vasculature to the still unknown trigger of aneurysm formation.
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Affiliation(s)
- Albert Busch
- Clinic for General, Visceral, Vascular & Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany. .,Molecular Vascular Medicine Group, Center for Molecular Medicine, Karolinska Institute, Stockholm, Sweden. .,Clinic for Vascular and Endovascular Surgery, Technical University Munich, Ismaninger Str 22, 81675, Munich, Germany.
| | - Caroline Grimm
- Clinic for General, Visceral, Vascular & Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Elena Hartmann
- Institute of Pathology and Comprehensive Cancer Center (CCC) Mainfranken, University Hospital Würzburg, Würzburg, Germany
| | - Valentina Paloschi
- Cardiovascular Medicine Unit, Center for Molecular MedicineKarolinska, University hospital Solna, Karolinska Institutet, Stockholm, Sweden
| | - Ralph Kickuth
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Würzburg, Germany
| | - Mariette Lengquist
- Department of Molecular Medicine and Surgery, Karolinska Institutet, Solna, Sweden
| | - Christoph Otto
- Clinic for General, Visceral, Vascular & Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Per Eriksson
- Cardiovascular Medicine Unit, Center for Molecular MedicineKarolinska, University hospital Solna, Karolinska Institutet, Stockholm, Sweden
| | - Richard Kellersmann
- Clinic for General, Visceral, Vascular & Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Udo Lorenz
- Clinic for General, Visceral, Vascular & Pediatric Surgery, University Hospital of Würzburg, Würzburg, Germany
| | - Lars Maegdefessel
- Molecular Vascular Medicine Group, Center for Molecular Medicine, Karolinska Institute, Stockholm, Sweden.,Clinic for Vascular and Endovascular Surgery, Technical University Munich, Ismaninger Str 22, 81675, Munich, Germany
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Botar CC, Tóth ÁÁ, Klisurić OR, Nićiforović DD, Vučaj Ćirilović VA, Till VE. Dynamic simulation and Doppler Ultrasonography validation of blood flow behavior in Abdominal Aortic Aneurysm. Phys Med 2017; 37:1-8. [DOI: 10.1016/j.ejmp.2017.03.021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/13/2016] [Revised: 03/20/2017] [Accepted: 03/27/2017] [Indexed: 10/19/2022] Open
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19
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Emeto TI, Alele FO, Smith AM, Smith FM, Dougan T, Golledge J. Use of Nanoparticles As Contrast Agents for the Functional and Molecular Imaging of Abdominal Aortic Aneurysm. Front Cardiovasc Med 2017; 4:16. [PMID: 28386544 PMCID: PMC5362602 DOI: 10.3389/fcvm.2017.00016] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 03/09/2017] [Indexed: 01/19/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a degenerative disease of the aorta common in adults older than 65 years of age. AAA is usually imaged using ultrasound or computed tomography. Molecular imaging technologies employing nanoparticles (NPs) have been proposed as novel ways to quantify pathological processes, such as inflammation, within AAAs as a means to identify the risk of rapid progression or rupture. This article reviews the current evidence supporting the role of NP-based imaging in the management of AAA. Currently, ultrasmall superparamagnetic NPs enhanced magnetic resonance imaging appears to hold the greatest potential for imaging macrophage-mediated inflammation in human AAA.
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Affiliation(s)
- Theophilus I Emeto
- Public Health and Tropical Medicine, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD, Australia; Queensland Research Centre for Peripheral Vascular Diseases, College of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
| | - Faith O Alele
- Public Health and Tropical Medicine, College of Public Health, Medical and Veterinary Sciences, James Cook University , Townsville, QLD , Australia
| | - Amy M Smith
- Public Health and Tropical Medicine, College of Public Health, Medical and Veterinary Sciences, James Cook University , Townsville, QLD , Australia
| | - Felicity M Smith
- Public Health and Tropical Medicine, College of Public Health, Medical and Veterinary Sciences, James Cook University , Townsville, QLD , Australia
| | - Tammy Dougan
- Department of Medicine, University of Cambridge, Cambridge Biomedical Campus, Addenbrookes Hospital , Cambridge , UK
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Diseases, College of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia; Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, Australia
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20
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Parenteral administration of factor Xa/IIa inhibitors limits experimental aortic aneurysm and atherosclerosis. Sci Rep 2017; 7:43079. [PMID: 28220880 PMCID: PMC5318894 DOI: 10.1038/srep43079] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Accepted: 01/12/2017] [Indexed: 12/20/2022] Open
Abstract
Intraluminal thrombus is a consistent feature of human abdominal aortic aneurysm (AAA). Coagulation factor Xa (FXa) catalyses FII to thrombin (FIIa). We examined the effect of FXa/FIIa inhibition on experimental aortic aneurysm in apolipoprotein E-deficient (ApoE-/-) mice infused with angiotensin II (AngII). The concentration of FXa within the supra-renal aorta (SRA) correlated positively with SRA diameter. Parenteral administration of enoxaparin (FXa/IIa inhibitor) and fondaparinux (FXa inhibitor) over 14 days reduced to severity of aortic aneurysm and atherosclerosis in AngII-infused ApoE-/- mice. Enteral administration of the FIIa inhibitor dabigatran had no significant effect. Aortic protease-activated receptor (PAR)-2 expression increased in response to AngII infusion. Fondaparinux reduced SRA levels of FXa, FIIa, PAR-2, matrix metalloproteinase (MMP)2, Smad2/3 phosphorylation, and MOMA-2 positive cells in the mouse model. FXa stimulated Smad2/3 phosphorylation and MMP2 expression in aortic vascular smooth muscle cells (VSMC) in vitro. Expression of MMP2 in FXa-stimulated VSMC was downregulated in the presence of a PAR-2 but not a PAR-1 inhibitor. These findings suggest that FXa/FIIa inhibition limits aortic aneurysm and atherosclerosis severity due to down-regulation of vascular PAR-2-mediated Smad2/3 signalling and MMP2 expression. Inhibition of FXa/FIIa may be a potential therapy for limiting aortic aneurysm.
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21
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Gao P, Si J, Yang B, Yu J. Upregulation of MicroRNA-15a Contributes to Pathogenesis of Abdominal Aortic Aneurysm (AAA) by Modulating the Expression of Cyclin-Dependent Kinase Inhibitor 2B (CDKN2B). Med Sci Monit 2017; 23:881-888. [PMID: 28214350 PMCID: PMC5328202 DOI: 10.12659/msm.898233] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Background The objective of the present study was to identify the association between miR-15a-5p and CDKN2B, and their roles in regulating the development of abdominal aortic aneurysm (AAA). Material/Methods We searched the miRNA database online (www.mirdb.org) and used a luciferase reporter assay system to study the regulatory relationship between miR-15a-5p and CDKN2B. We also conducted real-time PCR and Western blot analysis to study the mRNA and protein expression level of CDKN2B among different patient groups (participants with abdominal aortic aneurysm (AAA) and normal controls) or cells treated with scramble control, miR-15a-5p mimics, CDKN2B siRNA, and miR-15a-5p inhibitors. Results We found that CDKN2B was a virtual target of miR-15a-5p with potential binding sites in the 3′UTR of CDKN2B (77–83 bp). We also showed that miR-15a-5p could bind to the CDKN2B 3′UTR, resulting in a significant decrease in luciferase activity compared with the scramble control. Furthermore, we found that the cells isolated from AAA participants showed an over-expression of miR-15a-5p compared to the normal controls, while the CDKN2B mRNA and protein expression level of the AAA group were much lower than the normal control group. Additionally, the expression of CDKN2B mRNA and the protein of the cells transfected with miR-15a-5p mimics and CDKN2B siRNA was downregulated, while the cells showed upregulated expression subsequent to transfection with miR-15a-5p inhibitors compared to the scramble control. Conclusions The data revealed a negative regulatory role of miR-15a-5p in the apoptosis of smooth muscle cells via targeting CDKN2B, and showed that miR-15a-5p could be a novel therapeutic target of AAA.
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Affiliation(s)
- Peng Gao
- Department of Cardiac Surgery, No. 1 People's Hospital of Jining, Jining, Shandong, China (mainland)
| | - Jiyuan Si
- Department of Cardiac Surgery, No. 1 People's Hospital of Jining, Jining, Shandong, China (mainland)
| | - Bin Yang
- Department of Cardiac Surgery, No. 1 People's Hospital of Jining, Jining, Shandong, China (mainland)
| | - Jixiang Yu
- Department of Cardiac Surgery, No. 1 People's Hospital of Jining, Jining, Shandong, China (mainland)
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22
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Challenges and opportunities in limiting abdominal aortic aneurysm growth. J Vasc Surg 2017; 65:225-233. [DOI: 10.1016/j.jvs.2016.08.003] [Citation(s) in RCA: 84] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Accepted: 08/08/2016] [Indexed: 11/18/2022]
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23
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CCN3: stopping that achy, breaky aorta. J Cell Commun Signal 2016; 11:93-94. [PMID: 27838899 DOI: 10.1007/s12079-016-0363-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 10/20/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) affects between 2 and 8 % of males over the age of 65. Mortality if ruptured is 85 to 90 %, Recent data by Zhang and colleagues (J Clin Invest 126(4):1282-1299 2016) suggest that CCN3 might be used to treat AAA. This Bits and Bytes summarizes these findings.
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Abstract
An abdominal aortic aneurysm (AAA) is a focal full thickness dilatation of the abdominal aorta, greater than 1.5 times its normal diameter. Although some patients with AAA experience back or abdominal pain, most remain asymptomatic until rupture. The prognosis after AAA rupture is poor. Management strategies for patients with asymptomatic AAAs include risk factor reduction, such as smoking cessation, optimizing antihypertensive treatment, and treating dyslipidemia, as well as surveillance by ultrasound. Currently, aneurysm diameter alone is often used to assess risk of rupture. Once the aneurysm diameter reaches 5.5 cm, the risk of rupture is considered greater than the risk of intervention and elective aneurysm repair is undertaken. There is increasing interest in detecting AAAs early, and national screening programs are now in place. Furthermore, there is increasing research interest in biomarkers, genetics, and functional imaging to improve detection of AAAs at risk of progression and rupture. In this review, we discuss risk factors for AAA rupture, which should be considered during the management process, to advance current deficiencies in management pathways.
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25
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Abstract
The term epigenetics is usually used to describe inheritable changes in gene function which do not involve changes in the DNA sequence. These typically include non-coding RNAs, DNA methylation and histone modifications. Smoking and older age are recognised risk factors for peripheral artery diseases, such as occlusive lower limb artery disease and abdominal aortic aneurysm, and have been implicated in promoting epigenetic changes. This brief review describes studies that have associated epigenetic factors with peripheral artery diseases and investigations which have examined the effect of epigenetic modifications on the outcome of peripheral artery diseases in mouse models. Investigations have largely focused on microRNAs and have identified a number of circulating microRNAs associated with human peripheral artery diseases. Upregulating or antagonising a number of microRNAs has also been reported to limit aortic aneurysm development and hind limb ischemia in mouse models. The importance of DNA methylation and histone modifications in peripheral artery disease has been relatively little studied. Whether circulating microRNAs can be used to assist identification of patients with peripheral artery diseases and be modified in order to improve the outcome of peripheral artery disease will require further investigation.
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Affiliation(s)
- Jonathan Golledge
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine & Dentistry, James Cook University, Townsville, QLD, 4811, Australia.
- Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, Australia.
| | - Erik Biros
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine & Dentistry, James Cook University, Townsville, QLD, 4811, Australia
| | - John Bingley
- Vascular Surgery Unit, Mater Hospital Brisbane, South Brisbane, QLD, Australia
- Department of Surgery, University of Queensland, Brisbane, Australia
| | - Vikram Iyer
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine & Dentistry, James Cook University, Townsville, QLD, 4811, Australia
- Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, Australia
- Department of Surgery, University of Queensland, Brisbane, Australia
| | - Smriti M Krishna
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine & Dentistry, James Cook University, Townsville, QLD, 4811, Australia
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26
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Abstract
Abdominal aortic aneurysm (AAA) is a significant cause of mortality in older adults. A key mechanism implicated in AAA pathogenesis is inflammation and the associated production of reactive oxygen species (ROS) and oxidative stress. These have been suggested to promote degradation of the extracellular matrix (ECM) and vascular smooth muscle apoptosis. Experimental and human association studies suggest that ROS can be favourably modified to limit AAA formation and progression. In the present review, we discuss mechanisms potentially linking ROS to AAA pathogenesis and highlight potential treatment strategies targeting ROS. Currently, none of these strategies has been shown to be effective in clinical practice.
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27
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Abstract
Abdominal aortic aneurysm (AAA) is a clinical challenge in risk assessment, recognition, treatment, and prevention. This article explores the pathogenesis, presentation, diagnosis, treatment, and prevention of AAA.
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28
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Watanabe A, Ichiki T, Kojima H, Takahara Y, Hurt-Camejo E, Michaëlsson E, Sankoda C, Ikeda J, Inoue E, Tokunou T, Kitamoto S, Sunagawa K. Suppression of abdominal aortic aneurysm formation by AR-R17779, an agonist for the α7 nicotinic acetylcholine receptor. Atherosclerosis 2016; 244:113-20. [DOI: 10.1016/j.atherosclerosis.2015.11.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 10/20/2015] [Accepted: 11/04/2015] [Indexed: 11/27/2022]
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29
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Affiliation(s)
- Jonathan Golledge
- Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, Australia Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Australia
| | - Mark E Cooper
- Diabetes Domain, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
| | - Zhonglin Chai
- Diabetes Domain, Baker IDI Heart and Diabetes Institute, Melbourne, Australia
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30
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Krishna SM, Seto SW, Jose RJ, Biros E, Moran CS, Wang Y, Clancy P, Golledge J. A peptide antagonist of thrombospondin-1 promotes abdominal aortic aneurysm progression in the angiotensin II-infused apolipoprotein-E-deficient mouse. Arterioscler Thromb Vasc Biol 2015; 35:389-98. [PMID: 25524772 DOI: 10.1161/atvbaha.114.304732] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Interaction of the activating sequence in thrombospondin-1 (TSP-1) with the conserved sequence (leucine-serine-lysine-leucine [LSKL]) in the latency-associated peptide region of latent transforming growth factor (TGF)-β complex is important in regulating TGF-β1 activity. We aimed to assess the effect of blocking peptide LSKL on the progression of pre-established abdominal aortic aneurysm in angiotensin II-infused apolipoprotein E-deficient (ApoE(-/-)) mice. APPROACH AND RESULTS Abdominal aortic aneurysm was established in 3-month-old male ApoE(-/-) mice with subcutaneous infusion of angiotensin II for 28 days. After this, mice received LSKL peptide or control SLLK (serine-leucine-leucine-lysine) peptide (4 mg/kg) via daily intraperitoneal injection for an additional 2 weeks. Administration of LSKL peptide promoted larger suprarenal aortic diameter, as determined by ultrasound and morphometric analysis, and stimulated more severe atherosclerosis within the aortic arch. In addition, mice receiving LSKL peptide exhibited elevated circulating proinflammatory cytokine levels and greater inflammatory cells within the suprarenal aorta compared with controls. Mice receiving LSKL peptide showed low plasma TGF-β1 activity and low levels of aortic tissue phosphorylated to total Smad2/3. Aortic gene expression of TGF-β receptor 1 (TGFBRI) and receptor 2 (TGFBRII), but not TGF-β1 and thrombospondin-1, were lower in mice receiving LSKL peptide than controls. LSKL peptide administration was associated with greater aortic elastin fragmentation and lower expression and activity of the TGF-β1-target gene lysyl oxidase like 1 (LOXL1). CONCLUSIONS Attenuation of thrombospondin-1-directed activation of TGF-β1 promotes abdominal aortic aneurysm and atherosclerosis progression in the angiotensin II-infused ApoE(-/-) mouse model.
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MESH Headings
- Amino Acid Oxidoreductases/metabolism
- Angiotensin II
- Animals
- Aorta/drug effects
- Aorta/metabolism
- Aorta/pathology
- Aortic Aneurysm, Abdominal/blood
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/genetics
- Aortic Aneurysm, Abdominal/pathology
- Apolipoproteins E/deficiency
- Apolipoproteins E/genetics
- Atherosclerosis/blood
- Atherosclerosis/chemically induced
- Atherosclerosis/genetics
- Atherosclerosis/pathology
- Cytokines/blood
- Disease Models, Animal
- Disease Progression
- Elastin/metabolism
- Inflammation Mediators/blood
- Injections, Intraperitoneal
- Male
- Mice, Knockout
- Peptides/administration & dosage
- Peptides/toxicity
- Phosphorylation
- Protein Serine-Threonine Kinases/metabolism
- Receptor, Transforming Growth Factor-beta Type I
- Receptor, Transforming Growth Factor-beta Type II
- Receptors, Transforming Growth Factor beta/metabolism
- Smad2 Protein/metabolism
- Smad3 Protein/metabolism
- Thrombospondin 1/antagonists & inhibitors
- Thrombospondin 1/metabolism
- Time Factors
- Transforming Growth Factor beta1/blood
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Affiliation(s)
- Smriti M Krishna
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.)
| | - Sai Wang Seto
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.)
| | - Roby J Jose
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.)
| | - Erik Biros
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.)
| | - Corey S Moran
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.)
| | - Yutang Wang
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.)
| | - Paula Clancy
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.)
| | - Jonathan Golledge
- From the Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Queensland, Australia (S.M.K., S.W.S., R.J.J., E.B., C.S.M., Y.W., P.C., J.G.); and Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia (J.G.).
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Golledge J, Hankey GJ, Yeap BB, Almeida OP, Flicker L, Norman PE. Reported high salt intake is associated with increased prevalence of abdominal aortic aneurysm and larger aortic diameter in older men. PLoS One 2014; 9:e102578. [PMID: 25036037 PMCID: PMC4103816 DOI: 10.1371/journal.pone.0102578] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 06/20/2014] [Indexed: 11/18/2022] Open
Abstract
Background Salt intake has been implicated in the pathogenesis of abdominal aortic aneurysm (AAA) through studies in rodent models but not previously studied in humans. The aim of this study was to examine the association between reported addition of salt to food and the prevalence of AAA. Methods A risk factor questionnaire which contained a question about salt intake was included as part of a population screening study for AAA in 11742 older men. AAA presence was assessed by abdominal ultrasound imaging using a reproducible protocol. Results The prevalence of AAA was 6.9, 8.5 and 8.6% in men who reported adding salt to food never, sometimes and always, respectively, p = 0.005. Addition of salt to food sometimes (odds ratio [OR]: 1.22, 95% confidence interval [CI]: 1.03–1.44) or always (OR: 1.23, 95% CI 1.04–1.47) was independently associated with AAA after adjustment for other risk factors including age, waist-hip ratio, blood pressure, history of hypertension, high cholesterol, angina, diabetes, myocardial infarction and stroke. Salt intake was also independently associated with aortic diameter (beta 0.023, p = 0.012). In men with no prior history of hypertension, high cholesterol, angina, myocardial infarction or stroke (n = 4185), the association between addition of salt to food sometimes (OR: 1.41, 95% CI 0.96–2.08) or always (OR: 1.52, 95% CI 1.04–2.22) and AAA remained evident. Conclusion Reported salt intake is associated with AAA in older men. Additional studies are needed to determine whether reducing salt intake would protect against AAA.
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Affiliation(s)
- Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, Australia
- Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Australia
- * E-mail:
| | - Graeme J. Hankey
- School of Medicine and Pharmacology, University of Western Australia, Perth, Australia
- Department of Neurology, Royal Perth Hospital, Perth, Australia
| | - Bu B. Yeap
- School of Medicine and Pharmacology, University of Western Australia, Perth, Australia
- Department of Endocrinology, Fremantle Hospital, Fremantle, Australia
| | - Osvaldo P. Almeida
- School of Psychiatry & Clinical Neurosciences, University of Western Australia, Perth, Australia
- WA Centre for Health & Ageing, Centre for Medical Research, Perth, Australia
- Department of Psychiatry, Royal Perth Hospital, Perth, Australia
| | - Leon Flicker
- School of Medicine and Pharmacology, University of Western Australia, Perth, Australia
- WA Centre for Health & Ageing, Centre for Medical Research, Perth, Australia
- Department of Geriatric Medicine, Royal Perth Hospital, Perth, Australia
| | - Paul E. Norman
- School of Surgery, University of Western Australia, Perth, Australia
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Cronin O, Liu D, Bradshaw B, Iyer V, Buttner P, Cunningham M, Walker PJ, Golledge J. Visceral adiposity is not associated with abdominal aortic aneurysm presence and growth. Vasc Med 2014; 19:272-280. [PMID: 24948557 DOI: 10.1177/1358863x14537883] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Previous studies in rodent models and patients suggest that visceral adipose could play a direct role in the development and progression of abdominal aortic aneurysm (AAA). This study aimed to assess the association of visceral adiposity with AAA presence and growth. This study was a case-control investigation of patients that did (n=196) and did not (n=181) have an AAA who presented to The Townsville Hospital vascular clinic between 2003 and 2012. Cases were patients with AAA (infra-renal aortic diameter >30 mm) and controls were patients with intermittent claudication but no AAA (infra-renal aortic diameter <30 mm). All patients underwent computed tomography angiography (CTA). The visceral to total abdominal adipose volume ratio was estimated from CTAs by assessing total and visceral adipose deposits using an imaging software program. Measurements were assessed for reproducibility by repeat assessments on 15 patients. AAA risk factors were recorded at entry. Forty-five cases underwent two CTAs more than 6 months apart to assess AAA expansion. The association of visceral adiposity with AAA presence and growth was examined using logistic regression. Visceral adipose assessment by CTA was highly reproducible (mean coefficient of variation 1.0%). AAA was positively associated with older age and negatively associated with diabetes. The visceral to total abdominal adipose volume ratio was not significantly associated with AAA after adjustment for other risk factors. Patients with a visceral to total abdominal adipose volume ratio in quartile four had a 1.63-fold increased risk of AAA but with wide confidence intervals (95% CI 0.71-3.70; p=0.248). Visceral adiposity was not associated with AAA growth. In conclusion, this study suggests that visceral adiposity is not specifically associated with AAA presence or growth although larger studies are required to confirm these findings.
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Affiliation(s)
- Oliver Cronin
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
| | - David Liu
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
| | - Barbara Bradshaw
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
| | - Vikram Iyer
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia School of Medicine and Centre for Clinical Research, University of Queensland, Brisbane, QLD, Australia
| | - Petra Buttner
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia School of Public Health, Tropical Medicine and Rehabilitation Sciences, James Cook University, Townsville, QLD, Australia
| | - Margaret Cunningham
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia
| | - Philip J Walker
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia School of Medicine and Centre for Clinical Research, University of Queensland, Brisbane, QLD, Australia Department of Vascular Surgery, Royal Brisbane and Women's Hospital, Brisbane, QLD, Australia
| | - Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, School of Medicine and Dentistry, James Cook University, Townsville, QLD, Australia Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, QLD, Australia
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A deletion in chromosome 6q is associated with human abdominal aortic aneurysm. Clin Sci (Lond) 2014; 127:475-84. [PMID: 24708024 DOI: 10.1042/cs20130784] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Current efforts to identify the genetic contribution to abdominal aortic aneurysm (AAA) have mainly focused on the assessment of germ-line variants such as single-nucleotide polymorphisms. The aim of the present study was to assess the presence of acquired chromosomal aberrations in human AAA. Microarray data of ten biopsies obtained from the site of main AAA dilatation (AAA body) and three control biopsies obtained from the macroscopically non-dilated neck of the AAA (AAA neck) were initially compared with identified chromosomal aneuploidies using the Chromosomal Aberration Region Miner (ChARM) software. A commonly deleted segment of chromosome bands 6 (q22.1-23.2) was predicted within AAA biopsies. This finding was confirmed by quantitative real-time PCR (qPCR)-based DNA copy number assessments of an independent set of six AAA body and neck biopsies which identified a fold copy number change (∆KCt) of -1±0.35, suggesting the loss of one copy of the long interspersed nucleotide element type 1 (LINE-1) mapped to chromosome 6 (q22.1-23.2). The median relative genomic content of LINE-1 DNA was also reduced in AAA body compared with AAA neck biopsies (1.540 compared with 3.159; P=0.031). A gene important for vascular homoeostasis mapped to 6q23.1, connective tissue growth factor (CTGF), was assessed and found to be significantly down-regulated within AAA bodies compared with AAA necks (0.261 compared with 0.627; P=0.031), as determined by reverse transcription qPCR using total RNA as a template. Histology demonstrated marked staining for macrophages within AAA body biopsies. We found in vitro that the median relative genomic content of LINE-1 DNA in aortic vascular smooth muscle cells (AoSMCs) exposed to pro-inflammatory medium was ~1.5 times greater than that measured in control AoSMCs exposed to non-conditioned medium (3.044 compared with 2.040; P=0.015). Our findings suggest that acquired chromosomal aberrations associated with retrotransposon propagation may predispose to sporadic AAA.
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Suppression of abdominal aortic aneurysm formation by inhibition of prolyl hydroxylase domain protein through attenuation of inflammation and extracellular matrix disruption. Clin Sci (Lond) 2014; 126:671-8. [PMID: 24256203 DOI: 10.1042/cs20130435] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In the present study we sought to determine the effect of CoCl2, an inhibitor of PHD (prolyl hydroxylase domain protein), on the development of AAA (abdominal aortic aneurysm). AAA was induced in C57BL/6 mice by periaortic application of CaCl2 (AAA group). NaCl (0.9%)-treated mice were used as a sham control (SHAM group). Mice were treated with 0.05% CoCl2 in the drinking water (AAA/CoCl2 group). At 1 and 6 weeks after the operation, aortic tissue was excised for further examination. After 6 weeks of CaCl2 treatment, aortic diameter and macrophage infiltration into the aortic adventitia were increased in the AAA group compared with the SHAM group. Treatment with CoCl2 reduced the aneurysmal size and macrophage infiltration compared with the AAA group. Aortic expression of inflammatory cytokines and MCP-1 (monocyte chemoattractant protein-1) and the activities of MMP-9 (matrix metalloproteinase-9) and MMP-2 were enhanced in the AAA group and attenuated in the AAA/CoCl2 group. Expression of cytokines and the activities of MMPs were already increased after 1 week of CaCl2 treatment, but were suppressed by CoCl2 treatment in association with reduced NF-κB (nuclear factor κB) phosphorylation. Treatment with CoCl2 in mice prevented the development of CaCl2-induced AAA in association with reduced inflammation and ECM (extracellular matrix) disruption. The results of the present study suggest that PHD plays a critical role in the development of AAA and that there is a therapeutic potential for PHD inhibitors in the prevention of AAA development.
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microRNA profiling in patients with abdominal aortic aneurysms: the significance of miR-155. Clin Sci (Lond) 2014; 126:795-803. [DOI: 10.1042/cs20130599] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Our finding of high levels of miR-155 in patients with abdominal aortic aneurysm identifies this miRNA as a potential therapeutic target with implications for clinical management of this vascular disease.
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Golledge J, Iyer V, Jenkins J, Bradshaw B, Cronin O, Walker PJ. Thrombus volume is similar in patients with ruptured and intact abdominal aortic aneurysms. J Vasc Surg 2014; 59:315-20. [DOI: 10.1016/j.jvs.2013.08.036] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Revised: 08/21/2013] [Accepted: 08/21/2013] [Indexed: 11/30/2022]
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Biros E, Moran CS, Rush CM, Gäbel G, Schreurs C, Lindeman JHN, Walker PJ, Nataatmadja M, West M, Holdt LM, Hinterseher I, Pilarsky C, Golledge J. Differential gene expression in the proximal neck of human abdominal aortic aneurysm. Atherosclerosis 2014; 233:211-8. [PMID: 24529146 DOI: 10.1016/j.atherosclerosis.2013.12.017] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/25/2013] [Revised: 12/16/2013] [Accepted: 12/22/2013] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Abdominal aortic aneurysm (AAA) represents a common cause of morbidity and mortality in elderly populations but the mechanisms involved in AAA formation remain incompletely understood. Previous human studies have focused on biopsies obtained from the center of the AAA however it is likely that pathological changes also occur in relatively normal appearing aorta away from the site of main dilatation. The aim of this study was to assess the gene expression profile of biopsies obtained from the neck of human AAAs. METHODS We performed a microarray study of aortic neck specimens obtained from 14 patients with AAA and 8 control aortic specimens obtained from organ donors. Two-fold differentially expressed genes were identified with correction for multiple testing. Mechanisms represented by differentially expressed genes were identified using Kyoto Encyclopedia of Genes and Genomes (KEGG) pathways. Some of the differentially expressed genes were validated by quantitative real-time PCR (qPCR) and immunohistochemistry. RESULTS We identified 1047 differentially expressed genes in AAA necks. The KEGG analysis revealed marked upregulation of genes related to immunity. These pathways included cytokine-cytokine receptor interaction (P = 8.67*10(-12)), chemokine signaling pathway (P = 5.76*10(-07)), and antigen processing and presentation (P = 4.00*10(-04)). Examples of differentially expressed genes validated by qPCR included the T-cells marker CD44 (2.16-fold upregulated, P = 0.008) and the B-cells marker CD19 (3.14-fold upregulated, P = 0.029). The presence of B-cells in AAA necks was confirmed by immunohistochemistry. CONCLUSIONS The role of immunity in AAA is controversial. This study suggests that immune pathways are also upregulated within the undilated aorta proximal to an AAA.
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Affiliation(s)
- Erik Biros
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine, James Cook University, Townsville, Queensland, Australia
| | - Corey S Moran
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine, James Cook University, Townsville, Queensland, Australia
| | - Catherine M Rush
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine, James Cook University, Townsville, Queensland, Australia; School of Veterinary and Biomedical Sciences, James Cook University, Townsville, Queensland, Australia
| | - Gabor Gäbel
- Department of Vascular and Endovascular Surgery, Ludwig Maximilians University Munich, Munich, Germany
| | - Charlotte Schreurs
- Department of Vascular Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Jan H N Lindeman
- Department of Vascular Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Philip J Walker
- University of Queensland, School of Medicine, Discipline of Surgery, and Centre for Clinical Research and Royal Brisbane and Women's Hospital, Department of Vascular Surgery Herston, Queensland 4029, Australia
| | - Maria Nataatmadja
- The Cardiovascular Research Group, Department of Medicine, the University of Queensland, Queensland, Australia
| | - Malcolm West
- The Cardiovascular Research Group, Department of Medicine, the University of Queensland, Queensland, Australia
| | - Lesca M Holdt
- Institute of Laboratory Medicine, Ludwig Maximilians University Munich, Munich, Germany
| | - Irene Hinterseher
- Department of General, Visceral, Vascular and Thoracic Surgery, Charité Universitätsmedizin Berlin, Charité Campus Mitte, Berlin, Germany
| | - Christian Pilarsky
- Department of Vascular and Endovascular Surgery, Ludwig Maximilians University Munich, Munich, Germany
| | - Jonathan Golledge
- The Vascular Biology Unit, Queensland Research Centre for Peripheral Vascular Disease, School of Medicine, James Cook University, Townsville, Queensland, Australia; Department of Vascular and Endovascular Surgery, The Townsville Hospital, Townsville, Queensland, Australia.
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Urocortin 2 is associated with abdominal aortic aneurysm and mediates anti-proliferative effects on vascular smooth muscle cells via corticotrophin releasing factor receptor 2. Clin Sci (Lond) 2013; 126:517-27. [DOI: 10.1042/cs20130425] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
There are no current effective drug therapies for abdominal aortic aneurysm, an important cause of death in older adults. Our study suggests that urocortin 2 participates in the disease process and may serve as a putative therapeutic target.
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Golledge J, Clancy P, Yeap BB, Hankey GJ, Norman PE. Increased serum angiopoietin-2 is associated with abdominal aortic aneurysm prevalence and cardiovascular mortality in older men. Int J Cardiol 2013; 167:1159-63. [DOI: 10.1016/j.ijcard.2012.03.120] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 02/08/2012] [Accepted: 03/10/2012] [Indexed: 01/28/2023]
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Golledge J, Clancy P, Hankey GJ, Norman PE. Relation between serum thrombospondin-2 and cardiovascular mortality in older men screened for abdominal aortic aneurysm. Am J Cardiol 2013; 111:1800-4. [PMID: 23528028 DOI: 10.1016/j.amjcard.2013.02.038] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 02/05/2013] [Accepted: 02/05/2013] [Indexed: 10/27/2022]
Abstract
Thrombospondin-1 and -2 (TSP-1 and -2) have been implicated in the regulation of angiogenesis, thrombosis, and inflammation, which are believed to be critical in the pathogenesis of cardiovascular events. The aim of this study was to assess whether serum TSP-1 and TSP-2 concentrations were associated with cardiovascular mortality in older men. A cohort of 992 elderly men was recruited between 2001 and 2004, and blood was collected for assessment of serum TSP-1 and TSP-2 by immunoassay. The men were followed by means of the Western Australia Data Linkage System until July 31, 2009. The association of TSP-1 and TSP-2 with mortality was assessed using Kaplan-Meier estimates and Cox proportional hazard analysis. Serum TSP-2 quartile was strongly positively associated with all-cause and cardiovascular mortality. Men with serum TSP-2 in the first, second, third, and fourth quartiles had a cumulative incidence of cardiovascular mortality of 3.3%, 8.0%, 9.7%, and 12.5% at 5 years, respectively, p = 0.001. Men with serum TSP-2 in the highest quartile had a 3.37-fold (95% confidence interval: 1.53-7.44, p = 0.003) increased risk of cardiovascular mortality after adjusting for other cardiovascular risk factors. Most deaths were secondary to cardiac causes, and serum TSP-2 was also independently associated with cardiac mortality (relative risk: 3.55, 95% confidence interval: 1.54-8.20 for men in the top compared with the lowest quartile). Serum TSP-1 was not associated with cardiovascular mortality. In conclusion, increased serum TSP-2 concentration is independently and significantly associated with the risk of cardiac mortality in older men.
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Golledge J. Targeting chemokines in aortic aneurysm: could this be key to a novel therapy for a common problem? Arterioscler Thromb Vasc Biol 2013; 33:670-2. [PMID: 23486768 DOI: 10.1161/atvbaha.112.301004] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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Moxon JV, Parr A, Emeto TI, Walker P, Norman PE, Golledge J. Diagnosis and monitoring of abdominal aortic aneurysm: current status and future prospects. Curr Probl Cardiol 2011; 35:512-48. [PMID: 20932435 DOI: 10.1016/j.cpcardiol.2010.08.004] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abdominal aortic aneurysm (AAA) remains an important cause of morbidity and mortality in elderly men, and prevalence is predicted to increase in parallel with a global aging population. AAA is commonly asymptomatic, and in the absence of routine screening, diagnosis is usually incidental when imaging to assess unrelated medical complaints. In the absence of approved diagnostic and prognostic markers, AAAs are monitored conservatively via medical imaging until aortic diameter approaches 50-55 mm and surgical repair is performed. There is currently significant interest in identifying molecular markers of diagnostic and prognostic value for AAA. Here we outline the current guidelines for AAA management and discuss modern scientific techniques currently employed to identify improved diagnostic and prognostic markers.
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Golledge J, Mallat Z, Tedgui A, Norman PE. Serum secreted phospholipase A2 is associated with abdominal aortic aneurysm presence but not progression. Atherosclerosis 2011; 216:458-60. [PMID: 21382622 DOI: 10.1016/j.atherosclerosis.2011.02.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2010] [Revised: 02/09/2011] [Accepted: 02/10/2011] [Indexed: 11/17/2022]
Abstract
OBJECTIVE Secretory phospholipase A(2) (sPLA(2)) has been implicated in rodent models of abdominal aortic aneurysm (AAA). The aim of this study was to assess whether serum sPLA(2) activity was associated with AAA presence and progression. METHODS Serum sPLA(2) activity was measured using a fluorometric assay in 1002 men of whom 310 had an AAA. 272 of the men had repeat ultrasound surveillance of their AAA for a median of 5.5 years. The association of sPLA(2) activity with AAA was assessed using multiple regression analysis to adjust for other risk factors. RESULTS Median serum sPLA(2) activity was 21.67 in men with AAA and 18.32 U/ml in men without AAA, p<0.001. Men with sPLA(2) activity ≥ median (19.20 U/ml) had a 1.40-fold (95% CI 1.04-1.87, p=0.027) increased prevalence of AAA independent of other risk factors. Serum sPLA(2) activity was not associated with AAA growth. CONCLUSION Serum sPLA(2) activity is elevated in men with small AAAs but is not associated with AAA progression.
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Affiliation(s)
- Jonathan Golledge
- Vascular Biology Unit, School of Medicine and Dentistry, James Cook University, Townsville 4811, Australia.
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Trollope AF, Golledge J. Angiopoietins, abdominal aortic aneurysm and atherosclerosis. Atherosclerosis 2010; 214:237-43. [PMID: 20832800 DOI: 10.1016/j.atherosclerosis.2010.08.051] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2010] [Revised: 06/29/2010] [Accepted: 08/02/2010] [Indexed: 01/10/2023]
Abstract
Abdominal aortic aneurysm (AAA) and atherosclerosis are common causes of mortality and morbidity in an aging population. Angiogenesis is believed to contribute to the development and progression of these diseases. Angiopoietins (angpts) are known to be important regulators of angiogenesis. Angpts can also influence inflammation and have been shown to possess both pro-atherosclerotic and atheroprotective effects. This review explores the potential roles that the angpts play in the development and progression of AAA and atherosclerosis.
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Affiliation(s)
- Alexandra F Trollope
- The Vascular Biology Unit, School of Medicine and Dentistry, James Cook University, Douglas Campus, Townsville, QLD 4811, Australia
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Golledge J, Norman PE. Atherosclerosis and abdominal aortic aneurysm: cause, response, or common risk factors? Arterioscler Thromb Vasc Biol 2010; 30:1075-7. [PMID: 20484703 DOI: 10.1161/atvbaha.110.206573] [Citation(s) in RCA: 176] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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Trollope A, Moxon JV, Moran CS, Golledge J. Animal models of abdominal aortic aneurysm and their role in furthering management of human disease. Cardiovasc Pathol 2010; 20:114-23. [PMID: 20133168 DOI: 10.1016/j.carpath.2010.01.001] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2009] [Revised: 11/02/2009] [Accepted: 01/04/2010] [Indexed: 12/14/2022] Open
Abstract
Abdominal aortic aneurysm is a common degenerative disorder associated with sudden death due to aortic rupture. Current therapy is limited to open surgical repair of the aorta or endovascular placement of covered stents to exclude the abdominal aortic aneurysm from the circulation. A number of different animal models have been developed in order to study abdominal aortic aneurysm in an effort to advance current management deficiencies. Large animal models have been mostly used to assist in developing novel methods to surgically treat abdominal aortic aneurysms. Small animal models, particularly those developed in rodents, have been employed to further the understanding of the mechanisms involved in abdominal aortic aneurysm in order to identify potential new medical treatments. It is expected that findings from these animal models will contribute importantly to new treatments for human abdominal aortic aneurysm. This review explores the animal models which are used in abdominal aortic aneurysm research and highlights their advantages and disadvantages.
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Affiliation(s)
- Alexandra Trollope
- School of Medicine and Dentistry, James Cook University, Townsville, QLD 4811, Australia
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