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Yao D, Mei S, Tang W, Xu X, Lu Q, Shi Z. AAAKB: A manually curated database for tracking and predicting genes of Abdominal aortic aneurysm (AAA). PLoS One 2023; 18:e0289966. [PMID: 38100461 PMCID: PMC10723669 DOI: 10.1371/journal.pone.0289966] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 07/31/2023] [Indexed: 12/17/2023] Open
Abstract
Abdominal aortic aneurysm (AAA), an extremely dangerous vascular disease with high mortality, causes massive internal bleeding due to aneurysm rupture. To boost the research on AAA, efforts should be taken to organize and link the information about AAA-related genes and their functions. Currently, most researchers screen through genetic databases manually, which is cumbersome and time-consuming. Here, we developed "AAAKB" a manually curated knowledgebase containing genes, SNPs and pathways associated with AAA. In order to facilitate researchers to further explore the mechanism network of AAA, AAAKB provides predicted genes that are potentially associated with AAA. The prediction is based on the protein interaction information of genes collected in the database, and the random forest algorithm (RF) is used to build the prediction model. Some of these predicted genes are differentially expressed in patients with AAA, and some have been reported to play a role in other cardiovascular diseases, illustrating the utility of the knowledgebase in predicting novel genes. Also, AAAKB integrates a protein interaction visualization tool to quickly determine the shortest paths between target proteins. As the first knowledgebase to provide a comprehensive catalog of AAA-related genes, AAAKB will be an ideal research platform for AAA. Database URL: http://www.lqlgroup.cn:3838/AAAKB/.
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Affiliation(s)
- Di Yao
- Institute of Industrial Internet and Internet of Things, China Academy of Information and Communications Technology (CAICT), China
| | - Shuyuan Mei
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Wangyang Tang
- School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, China
| | - Xingyu Xu
- School of Biomedical Engineering and Informatics, Nanjing Medical University, Nanjing, China
| | - Qiulun Lu
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Zhiguang Shi
- Key Laboratory of Cardiovascular and Cerebrovascular Medicine, School of Pharmacy, Nanjing Medical University, Nanjing, China
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Atkinson G, Bianco R, Di Gregoli K, Johnson JL. The contribution of matrix metalloproteinases and their inhibitors to the development, progression, and rupture of abdominal aortic aneurysms. Front Cardiovasc Med 2023; 10:1248561. [PMID: 37799778 PMCID: PMC10549934 DOI: 10.3389/fcvm.2023.1248561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 09/07/2023] [Indexed: 10/07/2023] Open
Abstract
Abdominal aortic aneurysms (AAAs) account for up to 8% of deaths in men aged 65 years and over and 2.2% of women. Patients with AAAs often have atherosclerosis, and intimal atherosclerosis is generally present in AAAs. Accordingly, AAAs are considered a form of atherosclerosis and are frequently referred to as atherosclerotic aneurysms. Pathological observations advocate inflammatory cell infiltration alongside adverse extracellular matrix degradation as key contributing factors to the formation of human atherosclerotic AAAs. Therefore, macrophage production of proteolytic enzymes is deemed responsible for the damaging loss of ECM proteins, especially elastin and fibrillar collagens, which characterise AAA progression and rupture. Matrix metalloproteinases (MMPs) and their regulation by tissue inhibitors metalloproteinases (TIMPs) can orchestrate not only ECM remodelling, but also moderate the proliferation, migration, and apoptosis of resident aortic cells, alongside the recruitment and subsequent behaviour of inflammatory cells. Accordingly, MMPs are thought to play a central regulatory role in the development, progression, and eventual rupture of abdominal aortic aneurysms (AAAs). Together, clinical and animal studies have shed light on the complex and often diverse effects MMPs and TIMPs impart during the development of AAAs. This dichotomy is underlined from evidence utilising broad-spectrum MMP inhibition in animal models and clinical trials which have failed to provide consistent protection from AAA progression, although more encouraging results have been observed through deployment of selective inhibitors. This review provides a summary of the supporting evidence connecting the contribution of individual MMPs to AAA development, progression, and eventual rupture. Topics discussed include structural, functional, and cell-specific diversity of MMP members; evidence from animal models of AAA and comparisons with findings in humans; the dual role of MMPs and the requirement to selectively target individual MMPs; and the advances in identifying aberrant MMP activity. As evidenced, our developing understanding of the multifaceted roles individual MMPs perform during the progression and rupture of AAAs, should motivate clinical trials assessing the therapeutic potential of selective MMP inhibitors, which could restrict AAA-related morbidity and mortality worldwide.
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Affiliation(s)
| | | | | | - Jason L. Johnson
- Laboratory of Cardiovascular Pathology, Department of Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom
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Qiu C, Li Y, Xiao L, Zhang J, Guo S, Zhang P, Li R, Gong K. A novel rabbit model of abdominal aortic aneurysm: Construction and evaluation. Heliyon 2023; 9:e17279. [PMID: 37389075 PMCID: PMC10300360 DOI: 10.1016/j.heliyon.2023.e17279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 06/11/2023] [Accepted: 06/13/2023] [Indexed: 07/01/2023] Open
Abstract
Prior research has indicated that animal models of abdominal aortic aneurysm (AAA) utilizing porcine pancreatic elastase (PPE) exhibit a perfusion duration of 30 min, and extended perfusion durations are associated with elevated mortality rates. Similarly, the AAA model, which relies solely on balloon dilation (BD), is limited by the occurrence of self-healing aneurysms. Consequently, we constructed a novel AAA model by PPE combined with balloon expansion to shorten the modeling time and improve the modeling success rate. The findings indicated that 5 min was the optimal BD time for rabbits, 3 min BD was ineffective for aneurysm formation, and 10 min BD had a high mortality rate. The model, constructed in combination with PPE and 5 min BD, exhibited a 100% model formation rate and a 244.7% ± 9.83% dilation rate. HE staining exhibited that severe disruption of the inner, middle, and outer membranes of the abdominal aorta, with a marked decrease in smooth muscle cells and elastase, and a marked increase in fibroblasts of the middle membrane, and many infiltrating inflammatory cells were seen in all three layers, especially in the middle membrane. EVG staining displayed that the elastic fibers of the abdominal aortic wall were fractured and degraded, and lost their normal wavy appearance. The protein expression of inflammatory factor (IL-1β, IL-6 and TNF-α) as well as extracellular matrix components (MMP-2 and MMP-9) were significantly increased compared to PPE and 5 min BD alone. In conclusion, PPE combined with BD allows the establishment of a novel AAA model that closely mimics human AAA in terms of histomorphology, inflammatory cell infiltration, and vascular stromal destruction. This model provides an ideal animal model for understanding the pathogenesis of AAA.
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Affiliation(s)
- Changtao Qiu
- Affiliated Hospital of Kunming University of Science and Technology, Kunming, 650500, Yunnan, China
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
| | - Yuejin Li
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
| | - Le Xiao
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
| | - Jian Zhang
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
| | - Shikui Guo
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
| | - Peng Zhang
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
| | - Ruoxi Li
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
| | - Kunmei Gong
- Department of General Surgery, The First People’s Hospital of Yunnan Province Kunming, Kunming, 650032, Yunnan, China
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Xue C, Zhao G, Zhao Y, Chen YE, Zhang J. Mouse Abdominal Aortic Aneurysm Model Induced by Perivascular Application of Elastase. J Vis Exp 2022:10.3791/63608. [PMID: 35225256 PMCID: PMC9450023 DOI: 10.3791/63608] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/29/2023] Open
Abstract
Abdominal aortic aneurysm (AAA), although primarily asymptomatic, is potentially life-threatening as the rupture of AAA usually has a devastating outcome. Currently, there are several distinct experimental models of AAA, each emphasizing a different aspect in the pathogenesis of AAA. The elastase-induced AAA model is the second most used rodent AAA model. This model involves direct infusion or application of porcine pancreatic elastase (PPE) to the infrarenal segment of the aorta. Due to technical challenges, most elastase-induced AAA model nowadays is performed with the external application rather than an intraluminal infusion of PPE. The infiltration of elastase will cause degradation of elastic lamellae in the medial layers, resulting in the loss of aortic wall integrity and subsequent dilation of the abdominal aorta. However, one disadvantage of the elastase-induced AAA model is the inevitable variation of how the surgery is performed. Specifically, the surgical technique of isolating the infrarenal segment of the aorta, the material used for aorta wrapping and PPE incubation, the enzymatic activity of PPE, and the time duration of PPE application can all be important determinants that affect the eventual AAA formation rate and aneurysm diameter. Notably, the difference in these factors from different studies on AAA can lead to reproducibility issues. This article describes a detailed surgical process of the elastase-induced AAA model through direct application of PPE to the adventitia of the infrarenal abdominal aorta in the mouse. Following this procedure, a stable AAA formation rate of around 80% in male and female mice is achievable. The consistency and reproducibility of AAA studies using an elastase-induced AAA model can be significantly enhanced by establishing a standard surgical procedure.
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Affiliation(s)
- Chao Xue
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor
| | - Guizhen Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor
| | - Yang Zhao
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor
| | - Y Eugene Chen
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor
| | - Jifeng Zhang
- Department of Internal Medicine, Frankel Cardiovascular Center, University of Michigan, Ann Arbor;
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Huang Y, Deng H, Zhang J, Sun H, Li W, Li C, Zhang Y, Sun D. A photoelectrochemical immunosensor based on ReS2 nanosheets for determination of collagen III related to abdominal aortic aneurysm. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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De Leo N, Melillo A, Zhang P, Badach J, Miller H, Lin A, Williamson J, Ghobrial G, Gaughan J, Krishnadoss V, Noshadi I, Brown SA, Carpenter JP. Development of a Model for Abdominal Aortic Aneurysms in Swine. J Surg Res 2021; 268:79-86. [PMID: 34289418 DOI: 10.1016/j.jss.2021.05.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 03/12/2021] [Accepted: 05/26/2021] [Indexed: 01/02/2023]
Abstract
INTRODUCTION Producing a reliable large-animal model of AAA has proven challenging. We sought to create a reproducible swine model of AAA using enzymatic degradation of the aortic wall. METHODS Twelve male Yorkshire swine received periadventitial injections of type 1 collagenase and porcine pancreatic elastase into a 4 cm segment of infrarenal aorta. Nine survived until postoperative day (POD) 21. Aortic growth was monitored at 7 and 14 days using ultrasound. The animals were euthanized on POD 21, and the suprarenal (control) and infrarenal aorta were harvested for analysis, after gross measurement of aortic diameter (AD). Tensile strength was measured and additional segments were collected for histopathological analysis. PCR of matrix metalloproteinases (MMP9) was conducted. Groups were compared with paired t-tests, or ANOVA, where appropriate. RESULTS Average percent growth of AD at POD 21 for treated segments was 27% versus 4.5% for control tissue. The average difference in AD by subject, was 26.7% (P<0.001). Aortic medial thickness was decreased in treated tissue; 235 μm versus 645 μm (P<0.0001). Quantities of both medial elastin fibers, and smooth muscles cells were decreased in treated tissue; 1.8% compared to 9.9% (P<0.0001), and 24% versus 37.4%, respectively. Tensile strength was also decreased in treated tissue; 16.7 MPa versus 29.5 MPa (P=0.0002). A 12-fold increase in expression of MMP9 mRNA was also demonstrated in aneurysmal tissue (P=0.002) CONCLUSION: A reproducible, large-animal model of AAA, with anatomical, histopathological, and biomechanical properties that are clinically translatable, can be achieved with extraluminal enzymatic degradation.
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Affiliation(s)
- Nicholas De Leo
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey.
| | - Atlee Melillo
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | - Ping Zhang
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | - Jeremy Badach
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | - Henry Miller
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | - Andrew Lin
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | - John Williamson
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | - Gaby Ghobrial
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | - J Gaughan
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
| | | | - Iman Noshadi
- Rowan University, College of Engineering, Glassboro, New Jersey
| | - Spencer A Brown
- Cooper Research Institute, Education and Research Building, Camden, New Jersey
| | - Jeffrey P Carpenter
- Cooper University Hospital/Cooper Medical School of Rowan University, Department of Surgery, Camden, New Jersey
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7
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He J, Li N, Fan Y, Zhao X, Liu C, Hu X. Metformin Inhibits Abdominal Aortic Aneurysm Formation through the Activation of the AMPK/mTOR Signaling Pathway. J Vasc Res 2021; 58:148-158. [PMID: 33601368 DOI: 10.1159/000513465] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2020] [Accepted: 11/26/2020] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Epidemiological evidence suggests that the antidiabetic drug metformin (MET) can also inhibit abdominal aortic aneurysm (AAA) formation. However, the underlying protective mechanism remains unknown. It has been reported that phosphorylated AMP-activated protein kinase (AMPK) levels are significantly lower in AAA tissues than control aortic tissues. AMPK activation can inhibit the downstream signaling molecule called mechanistic target of rapamycin (mTOR), which has also been reported be upregulated in thoracic aneurysms. Thus, blocking mTOR signaling could attenuate AAA progression. MET is a known agonist of AMPK. Therefore, in this study, we investigated if MET could inhibit formation of AAA by activating the AMPK/mTOR signaling pathway. MATERIALS AND METHODS The AAA animal model was induced by intraluminal porcine pancreatic elastase (PPE) perfusion in male Sprague Dawley rats. The rats were treated with MET or compound C (C.C), which is an AMPK inhibitor. AAA formation was monitored by serial ultrasound. Aortas were collected 4 weeks after surgery and subjected to immunohistochemistry, Western blot, and transmission electron microscopy analyses. RESULTS MET treatment dramatically inhibited the formation of AAA 4 weeks after PPE perfusion. MET reduced the aortic diameter, downregulated both macrophage infiltration and matrix metalloproteinase expression, decreased neovascularization, and preserved the contractile phenotype of the aortic vascular smooth muscle cells. Furthermore, we detected an increase in autophagy after MET treatment. All of these effects were reversed by the AMPK inhibitor C.C. CONCLUSION This study demonstrated that MET activates AMPK and suppresses AAA formation. Our study provides a novel mechanism for MET and suggests that MET could be potentially used as a therapeutic candidate for preventing AAA.
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MESH Headings
- AMP-Activated Protein Kinases/metabolism
- Animals
- Aorta, Abdominal/drug effects
- Aorta, Abdominal/enzymology
- Aorta, Abdominal/ultrastructure
- Aortic Aneurysm, Abdominal/chemically induced
- Aortic Aneurysm, Abdominal/enzymology
- Aortic Aneurysm, Abdominal/pathology
- Aortic Aneurysm, Abdominal/prevention & control
- Dilatation, Pathologic
- Disease Models, Animal
- Enzyme Activation
- Macrophages/drug effects
- Macrophages/metabolism
- Male
- Metformin/pharmacology
- Neovascularization, Pathologic
- Pancreatic Elastase
- Phosphorylation
- Rats, Sprague-Dawley
- Signal Transduction
- TOR Serine-Threonine Kinases/metabolism
- Vascular Remodeling/drug effects
- Rats
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Affiliation(s)
- Jiaan He
- Department of Vascular Surgery, The First Affiliated Hospital, China Medical University, Shenyang, China
| | - Nan Li
- Department of Vascular Surgery, The First Affiliated Hospital, China Medical University, Shenyang, China
| | - Yichuan Fan
- Department of Vascular Surgery, The First Affiliated Hospital, China Medical University, Shenyang, China
| | - Xingzhi Zhao
- Department of Vascular Surgery, The First Affiliated Hospital, China Medical University, Shenyang, China
| | - Chengwei Liu
- Department of Vascular Surgery, The First Affiliated Hospital of Jiamusi University, Jiamusi, China
| | - Xinhua Hu
- Department of Vascular Surgery, The First Affiliated Hospital, China Medical University, Shenyang, China,
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Hyperlipidemia does not affect development of elastase-induced abdominal aortic aneurysm in mice. Atherosclerosis 2020; 311:73-83. [PMID: 32949946 DOI: 10.1016/j.atherosclerosis.2020.08.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 07/31/2020] [Accepted: 08/26/2020] [Indexed: 12/16/2022]
Abstract
BACKGROUND AND AIMS Hyperlipidemia is a suggested risk factor for abdominal aortic aneurysm (AAA). However, whether hyperlipidemia is causally involved in AAA progression remains elusive. Here, we tested the hypothesis that hyperlipidemia aggravates AAA formation in the widely used porcine pancreatic elastase (PPE) model of AAA in mice with varying levels of plasma lipids. METHODS Prior to PPE-surgery, 8-week-old male C57BL/6J mice (n = 32) received 1·1011 viral genomes of rAAV8-D377Y-mPcsk9 or control rAAV8 via the tail vein. Mice were fed either western type diet or regular chow. At baseline and during the 28 days following PPE-surgery, mice underwent weekly ultrasonic assessment of AAA progression. Experiments were repeated using Apolipoprotein E knockout (ApoE-/-) mice (n = 7) and wildtype C57BL/6J mice (n = 5). RESULTS At sacrifice, maximal intergroup plasma cholesterol and non-HDL/HDL ratio differences were >5-fold and >20-fold, respectively. AAA diameters expanded to 150% of baseline, but no intergroup differences were detected. This was verified in an independent experiment comparing 8-week-old male ApoE-/- mice with wildtype mice. Histological evaluation of experimental AAA lesions revealed accumulated lipid in neointimal and medial layers, and analysis of human AAA lesions (n = 5) obtained from open repair showed medial lipid deposition. CONCLUSIONS In summary, we find that lipid deposition in the aortic wall is a feature of PPE-induced AAA in mice as well as human AAA lesions. Despite, our data do not support the hypothesis that hyperlipidemia contributes to AAA progression.
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Xiao J, Wei Z, Chen X, Chen W, Zhang H, Yang C, Shang Y, Liu J. Experimental abdominal aortic aneurysm growth is inhibited by blocking the JAK2/STAT3 pathway. Int J Cardiol 2020; 312:100-106. [PMID: 32334849 DOI: 10.1016/j.ijcard.2020.03.072] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/05/2020] [Accepted: 03/27/2020] [Indexed: 12/19/2022]
Abstract
BACKGROUND The JAK/STAT pathway is a vital transcription signaling pathway that regulates gene expression and cellular activity. Our recently published study highlighted the role of IL-17A in abdominal aortic aneurysm (AAA) formation and rupture. IL-17A has been proven to upregulate vascular endothelial growth factor (VEGF) expression in some diseases. However, no study has demonstrated the relationships among JAK2/STAT3, IL-17A and VEGF. Therefore, we hypothesized that IL-17A may up-regulate VEGF expression via the JAK2/STAT3 signaling pathway to amplify the inflammatory response, exacerbate neovascularization, and accelerate AAA progression. METHODS To fully verify our hypothesis, two separate studies were performed: i) a study investigating the influence of JAK2/STAT3 on AAA formation and progression. ii) a study evaluating the relationship among IL-17A, JAK2/STAT3 and VEGF. Human tissues were collected from 7 AAA patients who underwent open surgery and 7 liver transplantation donors. All human aortic tissues were examined by histological and immunohistochemical staining, and Western blotting. Furthermore, mouse aortic tissues were also examined by histological and immunohistochemical staining and Western blotting, and the mouse aortic diameters were assessed by high-resolution Vevo 2100 microimaging system. RESULTS Among human aortic tissues, JAK2/STAT3, IL-17A and VEGF expression levels were higher in AAA tissues than in control tissues. Group treated with WP1066 (a selective JAK2/STAT3 pathway inhibitor), IL-17A, and VEGF groups had AAA incidences of 25%, 40%, and 65%, respectively, while the control group had an incidence of 75%. Histopathological analysis revealed that the IL-17A- and VEGF-related inflammatory responses were attenuated by WP1066. Thus, blocking the JAK2/STAT3 pathway with WP1066 attenuated experimental AAA progression. In addition, in study ii, we found that IL-17A siRNA seemed to attenuate the expression of IL-17A and VEGF in vivo study; treatment with VEGF siRNA decreased the expression of VEGF, while IL-17A expression remained high. In an in vitro study, rhIL-17A treatment increased JAK2/STAT3 and VEGF expression in macrophages in a dose-dependent manner. CONCLUSION Blocking the JAK2/STAT3 pathway with WP1066 (a JAK2/STAT3 specific inhibitor) attenuates experimental AAA progression. During AAA progression, IL-17A may influence the expression of VEGF via the JAK2/STAT3 signaling pathway. This potential mechanism may suggest a novel strategy for nonsurgical AAA treatment.
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Affiliation(s)
- Jie Xiao
- Department of Cardiovascular Surgery, Central Hospital of Wuhan, Tongji Medical college, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Zhanjie Wei
- Department of Thyroid and Breast Surgery, Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430014, Hubei, China
| | - Xing Chen
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical college, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Weiqiang Chen
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical college, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Hua Zhang
- Department of Cardiovascular Surgery, Union Hospital, Tongji Medical college, Huazhong University of Science and Technology, Wuhan, 430022, Hubei, China
| | - Chuanlei Yang
- Department of Cardiovascular Surgery, Central Hospital of Wuhan, Tongji Medical college, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Yuqiang Shang
- Department of Cardiovascular Surgery, Central Hospital of Wuhan, Tongji Medical college, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Jinping Liu
- Department of Cardiovascular Surgery, Zhongnan Hospital, Wuhan University, Wuhan, 430071, Hubei, China.
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10
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Abdollahi S, Boktor J, Hibino N. Bioprinting of freestanding vascular grafts and the regulatory considerations for additively manufactured vascular prostheses. Transl Res 2019; 211:123-138. [PMID: 31201778 PMCID: PMC6702084 DOI: 10.1016/j.trsl.2019.05.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 05/15/2019] [Accepted: 05/23/2019] [Indexed: 12/31/2022]
Abstract
Vasculature is the network of blood vessels of an organ or body part that allow for the exchange of nutrients and waste to and from every cell, thus establishing a circulatory equilibrium. Vascular health is at risk from a variety of conditions that includes disease and trauma. In some cases, medical therapy can alleviate the impacts of the condition. Intervention is needed in other instances to restore the health of abnormal vasculature. The main approaches to treat vascular conditions are endovascular procedures and open vascular reconstruction that often requires a graft to accomplish. However, current vascular prostheses have limitations that include size mismatch with the native vessel, risk of immunogenicity from allografts and xenografts, and unavailability of autografts. In this review, we discuss efforts in bioprinting, an emerging method for vascular reconstruction. This includes an overview of 3D printing processes and materials, graft characterization strategies and the regulatory aspects to consider for the commercialization of 3D bioprinted vascular prostheses.
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Affiliation(s)
- Sara Abdollahi
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Joseph Boktor
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland; Department of Biology, Johns Hopkins University, Baltimore, Maryland
| | - Narutoshi Hibino
- Division of Cardiac Surgery, Johns Hopkins Hospital, Baltimore, Maryland.
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Affiliation(s)
- Rhéure Alves-Lopes
- From the Institute of Cardiovascular and Medical Sciences, British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, United Kingdom
| | - Rhian M Touyz
- From the Institute of Cardiovascular and Medical Sciences, British Heart Foundation Glasgow Cardiovascular Research Centre, University of Glasgow, 126 University Place, United Kingdom
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12
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Shavandi A, Bekhit AEDA, Saeedi P, Izadifar Z, Bekhit AA, Khademhosseini A. Polyphenol uses in biomaterials engineering. Biomaterials 2018; 167:91-106. [PMID: 29567389 PMCID: PMC5973878 DOI: 10.1016/j.biomaterials.2018.03.018] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2017] [Revised: 02/21/2018] [Accepted: 03/12/2018] [Indexed: 12/26/2022]
Abstract
Polyphenols are micronutrients obtained from diet that have been suggested to play an important role in health. The health benefits of polyphenols and their protective effects in food systems as antioxidant compounds are well known and have been extensively investigated. However, their functional roles as a "processing cofactor" in tissue engineering applications are less widely known. This review focuses on the functionality of polyphenols and their application in biomaterials. Polyphenols have been used to stabilize collagen and to improve its resistance to degradation in biological systems. Therefore, they have been proposed to improve the performance of biomedical devices used in cardiovascular systems by improving the mechanical properties of grafted heart valves, enhancing microcirculation through the relaxation of the arterial walls and improving the capillary blood flow and pressure resistance. Polyphenols have been found to stimulate bone formation, mineralization, as well as the proliferation, differentiation, and the survival of osteoblasts. These effects are brought about by the stimulatory effect of polyphenols on osteoblast cells and their protective effect against oxidative stress and inflammatory cytokines. In addition, polyphenols inhibit the differentiation of the osteoclast cells. Collectively, these actions lead to promote bone formation and to reduce bone resorption, respectively. Moreover, polyphenols can increase the cross-linking of dentine and hence its mechanical stability. Overall, polyphenols provide interesting properties that will stimulate further research in the bioengineering field.
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Affiliation(s)
- Amin Shavandi
- Department of Food Science, University of Otago, Dunedin, New Zealand.
| | | | - Pouya Saeedi
- Department of Human Nutrition, University of Otago, Dunedin, New Zealand
| | - Zohreh Izadifar
- The Lunenfeld-Tanenbaum Research Institute, University of Toronto, Toronto, Canada
| | - Adnan A Bekhit
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, University of Alexandria, Alexandria, Egypt; Pharmacy Program, Allied Health Department, College of Health Sciences, University of Bahrain, P.O. Box 32038, Kingdom of Bahrain
| | - Ali Khademhosseini
- Department of Bioengineering, Department of Chemical and Biomolecular Engineering, Henry Samueli School of Engineering and Applied Sciences, University of California-Los Angeles, Los Angeles, CA, USA; Department of Radiology, David Geffen School of Medicine, University of California-Los Angeles, Los Angeles, CA, USA; Center for Minimally Invasive Therapeutics (C-MIT), University of California-Los Angeles, Los Angeles, CA, USA; California NanoSystems Institute (CNSI), University of California-Los Angeles, Los Angeles, CA, USA.
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Park AC, Phan N, Massoudi D, Liu Z, Kernien JF, Adams SM, Davidson JM, Birk DE, Liu B, Greenspan DS. Deficits in Col5a2 Expression Result in Novel Skin and Adipose Abnormalities and Predisposition to Aortic Aneurysms and Dissections. THE AMERICAN JOURNAL OF PATHOLOGY 2017; 187:2300-2311. [PMID: 28734943 DOI: 10.1016/j.ajpath.2017.06.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Revised: 06/07/2017] [Accepted: 06/08/2017] [Indexed: 12/15/2022]
Abstract
Classic Ehlers-Danlos syndrome (cEDS) is characterized by fragile, hyperextensible skin and hypermobile joints. cEDS can be caused by heterozygosity for missense mutations in genes COL5A2 and COL5A1, which encode the α2(V) and α1(V) chains, respectively, of collagen V, and is most often caused by COL5A1 null alleles. However, COL5A2 null alleles have yet to be associated with cEDS or other human pathologies. We previously showed that mice homozygous null for the α2(V) gene Col5a2 are early embryonic lethal, whereas haploinsufficiency caused aberrancies of adult skin, but not a frank cEDS-like phenotype, as skin hyperextensibility at low strain and dermal cauliflower-contoured collagen fibril aggregates, two cEDS hallmarks, were absent. Herein, we show that ubiquitous postnatal Col5a2 knockdown results in pathognomonic dermal cauliflower-contoured collagen fibril aggregates, but absence of skin hyperextensibility, demonstrating these cEDS hallmarks to arise separately from loss of collagen V roles in control of collagen fibril growth and nucleation events, respectively. Col5a2 knockdown also led to loss of dermal white adipose tissue (WAT) and markedly decreased abdominal WAT that was characterized by miniadipocytes and increased collagen deposition, suggesting α2(V) to be important to WAT development/maintenance. More important, Col5a2 haploinsufficiency markedly increased the incidence and severity of abdominal aortic aneurysms, and caused aortic arch ruptures and dissections, indicating that α2(V) chain deficits may play roles in these pathologies in humans.
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Affiliation(s)
- Arick C Park
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Noel Phan
- Department of Surgery, University of Wisconsin, Madison, Wisconsin
| | - Dawiyat Massoudi
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Zhenjie Liu
- Department of Surgery, University of Wisconsin, Madison, Wisconsin
| | - John F Kernien
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin
| | - Sheila M Adams
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Jeffrey M Davidson
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University, Nashville, Tennessee
| | - David E Birk
- Department of Molecular Pharmacology and Physiology, Morsani College of Medicine, University of South Florida, Tampa, Florida
| | - Bo Liu
- Department of Surgery, University of Wisconsin, Madison, Wisconsin
| | - Daniel S Greenspan
- Department of Cell and Regenerative Biology, University of Wisconsin, Madison, Wisconsin.
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Jansen CHP, Reimann C, Brangsch J, Botnar RM, Makowski MR. In vivo MR-angiography for the assessment of aortic aneurysms in an experimental mouse model on a clinical MRI scanner: Comparison with high-frequency ultrasound and histology. PLoS One 2017; 12:e0178682. [PMID: 28582441 PMCID: PMC5459432 DOI: 10.1371/journal.pone.0178682] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 05/17/2017] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND MR-angiography currently represents one of the clinical reference-standards for the assessment of aortic-dimensions. For experimental research in mice, dedicated preclinical high-field MRI scanners are used in most studies. This type of MRI scanner is not available in most institutions. The aim of this study was to evaluate the potential of MR-angiography performed on a clinical MR scanner for the assessment of aortic aneurysms in an experimental mouse model, compared to a preclinical high-resolution ultrasound imaging system and histopathology. METHODS All in vivo MR imaging was performed with a clinical 3T MRI system (Philips Achieva) equipped with a clinical gradient system in combination with a single-loop surface-coil (47 mm). All MR sequences were based on clinically used sequences. For ultrasound, a dedicated preclinical high-resolution system (30 MHz linear transducer, Vevo770, VisualSonics) was used. All imaging was performed with an ApoE knockout mouse-model for aortic aneurysms. Histopathology was performed as reference-standard at all stages of aneurysm development. RESULTS MR-angiography on a clinical 3T system enabled the clear visualization of the aortic lumen and aneurysmal dilation at different stages of aneurysm development. A close correlation (R2 = 0.98; p < 0.001) with histological area measurements was found. Additionally, a good agreement between MR and ultrasound area measurements in systole (R2 = 0.91; p < 0.001) and diastole (R2 = 0.94; p < 0.001) were measured. Regarding interobserver reproducibility, MRI measurements yielded a smaller 95% confidence interval and a closer interreader correlation compared to ultrasound measurements (-0.37-0.46; R2 = 0.97 vs. -0.78-0.88; R2 = 0.87). CONCLUSION This study demonstrates that MR-angiography, performed on a clinical 3T MR scanner, enables the reliable detection and quantification of the aortic dilatation at different stages of aneurysm development in an experimental mouse model.
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Affiliation(s)
- Christian H. P. Jansen
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, London, United Kingdom
| | | | | | - René M. Botnar
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, London, United Kingdom
- BHF Centre of Excellence, King’s College London, London, United Kingdom
- Wellcome Trust and EPSRC Medical Engineering Center, King’s College London, London, United Kingdom
- NIHR Biomedical Research Centre, King’s College London, London, United Kingdom
- School of Engineering, Pontificia Universidad Catolica de Chile, Santiago, Chile
| | - Marcus R. Makowski
- King’s College London, Division of Imaging Sciences and Biomedical Engineering, London, United Kingdom
- Department of Radiology, Charite, Berlin, Germany
- BHF Centre of Excellence, King’s College London, London, United Kingdom
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15
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Malkawi A, Pirianov G, Torsney E, Chetter I, Sakalihasan N, Loftus IM, Nordon I, Huggins C, Charolidi N, Thompson M, Xu XY, Cockerill GW. Increased Expression of Lamin A/C Correlate with Regions of High Wall Stress in Abdominal Aortic Aneurysms. AORTA : OFFICIAL JOURNAL OF THE AORTIC INSTITUTE AT YALE-NEW HAVEN HOSPITAL 2016; 3:152-66. [PMID: 27175366 DOI: 10.12945/j.aorta.2015.14.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 05/18/2015] [Indexed: 01/02/2023]
Abstract
BACKGROUND Since aortic diameter is the most -significant risk factor for rupture, we sought to identify stress-dependent changes in gene expression to illuminate novel molecular processes in aneurysm rupture. MATERIALS AND METHODS We constructed finite element maps of abdominal computerized tomography scans (CTs) of seven abdominal aortic aneurysm (AAA) patients to map wall stress. Paired biopsies from high- and low-stress areas were collected at surgery using vascular landmarks as coordinates. Differential gene expression was evaluated by Illumina Array analysis, using the whole genome DNA-mediated, annealing, selection, extension, and ligation (DASL) gene chip (n = 3 paired samples). RESULTS The sole significant candidate from this analysis, Lamin A/C, was validated at the protein level, using western blotting. Lamin A/C expression in the inferior mesenteric vein (IMV) of AAA patients was compared to a control group and in aortic smooth muscle cells in culture in response to physiological pulsatile stretch. -Areas of high wall stress (n = 7) correlate to those -regions which have the thinnest walls [778 µm (585-1120 µm)] in comparison to areas of lowest wall stress [1620 µm (962-2919 µm)]. Induced expression of Lamin A/C -correlated with areas of high wall stress from AAAs but was not significantly induced in the IMV from AAA patients compared to controls (n = 16). Stress-induced expression of Lamin A/C was mimicked by exposing aortic smooth muscle cells to prolonged pulsatile stretch. CONCLUSION Lamin A/C protein is specifically increased in areas of high wall stress in AAA from patients, but is not increased on other vascular beds of aneurysm patients, suggesting that its elevation may be a compensatory response to the pathobiology leading to aneurysms.
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Affiliation(s)
- Amir Malkawi
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
| | - Grisha Pirianov
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
| | - Evelyn Torsney
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
| | - Ian Chetter
- Centre for Cardiovascular & Metabolic Research, York Hull Medical School, Hull, UK
| | - Natzi Sakalihasan
- Department of Cardiovascular Surgery, University Hospital of Liege, Liege, Belgium
| | - Ian M Loftus
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
| | - Ian Nordon
- Department of Vascular Surgery, University Hospital Southampton, Southampton, UK
| | - Christopher Huggins
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
| | - Nicoletta Charolidi
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
| | - Matt Thompson
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
| | - Xie Yun Xu
- Department of Chemical Engineering, Imperial College London, London, UK
| | - Gillian W Cockerill
- Department of Biomedical and Forensic Sciences, Anglia Ruskin University, Cambridge, UK
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Aquino MDA, Barros SMWD, Castro AA, Pitta GBB, Pereira AH. Experimental Model of Saccular Abdominal Aortic Aneurysm in Swines with Pericardium Sac. Braz J Cardiovasc Surg 2016; 31:70-3. [PMID: 27074279 PMCID: PMC5062701 DOI: 10.5935/1678-9741.20160005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2014] [Accepted: 11/17/2015] [Indexed: 11/20/2022] Open
Abstract
OBJECTIVE To consider modifications in an experimental model of saccular aortic aneurysm, aiming at better reproducibility, to be used in the development of vascular prostheses. METHODS Experimental study in two phases, developed in the Center of Experimental Surgery and Bioterium (CCEB) of the University of Health Sciences of Alagoas (UNCISAL), with 11 hybrid swine, female, mean weight of 20 ± 5 kg, according to modifications in the Perini technique was performed. In the first phase, the aneurysm was confectioned with bovine pericardial patch. In the second phase, fifteen days later, the patency of the aneurysms was confirmed by Doppler ultrasonography. The described variables were aortic and aneurysm sac patency, incidence of rupture, morbidity and mortality. The statistical analysis program used was STATA v.8. RESULTS All animals survived to the procedures. Surgical mean time was 73 minutes. Aneurysm rupture, proximal or distal aortic thrombosis, visceral or legs ischemia weren't observed. Parietal thrombus formation was observed in all of the aneurysms, two of which (18%; IC 95% = 3.98 - 48.84) were occluded and nine (82%; IC 95% = 51.15 - 96.01) were patent. CONCLUSION In this series, the modifications carried out in the technique related to the surgical approach, race, anesthesia, and imaging exams reproduced the experimental model, reducing its costs, without hindering the analysis of the variables. The satisfactory patency ratio allows the method to be used in experimental models for the development of vascular prostheses.
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Rat aorta as a pharmacological tool for in vitro and in vivo studies. Life Sci 2016; 145:190-204. [DOI: 10.1016/j.lfs.2015.12.043] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2015] [Revised: 11/26/2015] [Accepted: 12/24/2015] [Indexed: 11/24/2022]
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Miner GH, Faries PL, Costa KD, Hanss BG, Marin ML. An update on the etiology of abdominal aortic aneurysms: implications for future diagnostic testing. Expert Rev Cardiovasc Ther 2015; 13:1079-90. [PMID: 26401919 DOI: 10.1586/14779072.2015.1082906] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Abdominal aortic aneurysm (AAA) disease is multifactorial with both environmental and genetic risk factors. The current research in AAA revolves around genetic profiles and expression studies in both human and animal models. Variants in genes involved in extracellular matrix degradation, inflammation, the renin-angiotensin system, cell growth and proliferation and lipid metabolism have been associated with AAA using a variety of study designs. However, the results have been inconsistent and without a standard animal model for validation. Thus, despite the growing body of knowledge, the specific variants responsible for AAA development, progression and rupture have yet to be determined. This review explores some of the more significant genetic studies to provide an overview of past studies that have influenced the current understanding of AAA etiology. Expanding our understanding of disease pathogenesis will inform research into novel diagnostics and therapeutics and ultimately to improve outcomes for patients with AAA.
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Affiliation(s)
- Grace H Miner
- a Icahn school of Medicine at Mount Sinai, New York, USA
| | - Peter L Faries
- a Icahn school of Medicine at Mount Sinai, New York, USA
| | - Kevin D Costa
- a Icahn school of Medicine at Mount Sinai, New York, USA
| | - Basil G Hanss
- a Icahn school of Medicine at Mount Sinai, New York, USA
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Owens AP, Edwards TL, Antoniak S, Geddings JE, Jahangir E, Wei WQ, Denny JC, Boulaftali Y, Bergmeier W, Daugherty A, Sampson UK, Mackman N. Platelet Inhibitors Reduce Rupture in a Mouse Model of Established Abdominal Aortic Aneurysm. Arterioscler Thromb Vasc Biol 2015; 35:2032-2041. [PMID: 26139462 PMCID: PMC4552620 DOI: 10.1161/atvbaha.115.305537] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 06/17/2015] [Indexed: 01/26/2023]
Abstract
OBJECTIVE Rupture of abdominal aortic aneurysms causes a high morbidity and mortality in the elderly population. Platelet-rich thrombi form on the surface of aneurysms and may contribute to disease progression. In this study, we used a pharmacological approach to examine a role of platelets in established aneurysms induced by angiotensin II infusion into hypercholesterolemic mice. APPROACH AND RESULTS Administration of the platelet inhibitors aspirin or clopidogrel bisulfate to established abdominal aortic aneurysms dramatically reduced rupture. These platelet inhibitors reduced abdominal aortic platelet and macrophage recruitment resulting in decreased active matrix metalloproteinase-2 and matrix metalloproteinase-9. Platelet inhibitors also resulted in reduced plasma concentrations of platelet factor 4, cytokines, and components of the plasminogen activation system in mice. To determine the validity of these findings in human subjects, a cohort of aneurysm patients were retrospectively analyzed using developed and validated algorithms in the electronic medical record database at Vanderbilt University. Similar to mice, administration of aspirin or P2Y12 inhibitors was associated with reduced death among patients with abdominal aortic aneurysm. CONCLUSIONS These results suggest that platelets contribute to abdominal aortic aneurysm progression and rupture.
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Affiliation(s)
- A. Phillip Owens
- Department of Medicine Division of Hematology and Oncology, UNC McAllister Heart Institute University of North Carolina at Chapel Hill Chapel Hill, NC 27599, USA Phone: 919-843-3961
| | - Todd L Edwards
- Department of Medicine, Vanderbilt University Medical Center Nashville, TN 37203 Phone: 615-322-3652
- Division of Epidemiology, Vanderbilt University Medical Center Nashville, TN 37203 Phone: 615-322-3652
| | - Silvio Antoniak
- Department of Medicine Division of Hematology and Oncology, UNC McAllister Heart Institute University of North Carolina at Chapel Hill Chapel Hill, NC 27599, USA Phone: 919-843-3961
| | - Julia E. Geddings
- Department of Medicine Division of Hematology and Oncology, UNC McAllister Heart Institute University of North Carolina at Chapel Hill Chapel Hill, NC 27599, USA Phone: 919-843-3961
| | - Eiman Jahangir
- Department of Cardiovascular Diseases John Ochsner Heart and Vascular Institute Ochsner Clinical School - The University of Queensland School of Medicine New Orleans, LA 70115 Phone: 504-392-3131
| | - Wei-Qi Wei
- Department of Biomedical Informatics, Vanderbilt University Medical Center Nashville, TN 37203 Phone: 615-322-3652
| | - Joshua C. Denny
- Department of Biomedical Informatics, Vanderbilt University Medical Center Nashville, TN 37203 Phone: 615-322-3652
| | - Yacine Boulaftali
- Department of Medicine Division of Hematology and Oncology, UNC McAllister Heart Institute University of North Carolina at Chapel Hill Chapel Hill, NC 27599, USA Phone: 919-843-3961
| | - Wolfgang Bergmeier
- Department of Biochemistry and Biophysics, UNC McAllister Heart Institute University of North Carolina at Chapel Hill Chapel Hill, NC 27599, USA Phone: 919-843-3961
| | - Alan Daugherty
- Saha Cardiovascular Research Center University of Kentucky Lexington, KY 40536 Phone: 859-323-3512
| | - Uchechukwu K.A. Sampson
- Department of Medicine, Vanderbilt University Medical Center Nashville, TN 37203 Phone: 615-322-3652
- Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center Nashville, TN 37203 Phone: 615-322-3652
- Department of Radiology and Radiological Sciences, Vanderbilt University Medical Center Nashville, TN 37203 Phone: 615-322-3652
| | - Nigel Mackman
- Department of Medicine Division of Hematology and Oncology, UNC McAllister Heart Institute University of North Carolina at Chapel Hill Chapel Hill, NC 27599, USA Phone: 919-843-3961
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Dai D, Kadirvel R, Rezek I, Ding YH, Lingineni R, Kallmes D. Elastase-Induced Intracranial Dolichoectasia Model in Mice. Neurosurgery 2015; 76:337-43; discussion 343. [DOI: 10.1227/neu.0000000000000615] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
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21
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Kloster BO, Lund L, Lindholt JS. Induction of continuous expanding infrarenal aortic aneurysms in a large porcine animal model. Ann Med Surg (Lond) 2015; 4:30-5. [PMID: 25685342 PMCID: PMC4323759 DOI: 10.1016/j.amsu.2014.10.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2014] [Revised: 10/13/2014] [Accepted: 10/15/2014] [Indexed: 12/05/2022] Open
Abstract
Background A large animal model with a continuous expanding infrarenal aortic aneurysm gives access to a more realistic AAA model with anatomy and physiology similar to humans, and thus allows for new experimental research in the natural history and treatment options of the disease. Methods 10 pigs (group A) underwent infrarenal aortic dissection, balloon dilatation, infusion of elastase into the lumen and placement of a stenosing cuff around the aorta. 10 control pigs (group B) underwent a sham procedure. The subsequent 28 days the AP-diameters of the aneurysms were measured using ultrasound, hereafter the pigs were euthanized for inspection and AAA wall sampling for histological analysis. Results In group A, all pigs developed continuous expanding AAA's with a mean increase in AP-diameter to 16.26 ± 0.93 mm equivalent to a 57% increase. In group B the AP-diameters increased to 11.33 ± 0.13 mm equivalent to 9.3% which was significantly less than in group A (p < 0.001). In group A, a significant negative association between the preoperative weight and the resulting AP-diameters was found. Histology shoved more or less complete resolution of the elastic tissue in the tunica media in group A. The most frequent complication was a neurological deficit in the lower limbs. Conclusion In pigs it's possible to induce continuous expanding AAA's based upon proteolytic degradation and pathological flow, resembling the real life dynamics of human aneurysms. Because the lumbars are preserved, it's also a potential model for further studies of novel endovascular devices and their complications. A large porcine animal model of AAA disease that mimics human aneurysm pathology. The first large AAA animal model to demonstrate a continuous AAA expansion over time. A potential model for further research into the natural history and prognosis of AAA's. Due to preserved lumbars a potential model for further EVAR/Endoleak research.
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Affiliation(s)
- Brian O Kloster
- Vascular Research Unit, Department of Vascular Surgery, Viborg Regional Hospital, Heibergs Alle 4, 8800 Viborg, Denmark
| | - Lars Lund
- Department of Urology, OUH Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
| | - Jes S Lindholt
- Vascular Research Unit, Department of Vascular Surgery, Viborg Regional Hospital, Heibergs Alle 4, 8800 Viborg, Denmark ; Elitary Research Centre of Individualized Medicine in Arterial Diseases (CIMA), Department of Cardiovascular and Thoracic Surgery, OUH Odense University Hospital, Sdr. Boulevard 29, 5000 Odense C, Denmark
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English SJ, Diaz JA, Shao X, Gordon D, Bevard M, Su G, Henke PK, Rogers VE, Upchurch GR, Piert M. Utility of (18) F-FDG and (11)C-PBR28 microPET for the assessment of rat aortic aneurysm inflammation. EJNMMI Res 2014; 4:20. [PMID: 26055934 PMCID: PMC4593011 DOI: 10.1186/s13550-014-0020-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2013] [Accepted: 03/21/2014] [Indexed: 01/11/2023] Open
Abstract
BACKGROUND The utility of (18) F-FDG and (11)C-PBR28 to identify aortic wall inflammation associated with abdominal aortic aneurysm (AAA) development was assessed. METHODS Utilizing the porcine pancreatic elastase (PPE) perfusion model, abdominal aortas of male Sprague-Dawley rats were infused with active PPE (APPE, AAA; N = 24) or heat-inactivated PPE (IPPE, controls; N = 16). Aortic diameter increases were monitored by ultrasound (US). Three, 7, and 14 days after induction, APPE and IPPE rats were imaged using (18) F-FDG microPET (approximately 37 MBq IV) and compared with (18) F-FDG autoradiography (approximately 185 MBq IV) performed at day 14. A subset of APPE (N = 5) and IPPE (N = 6) animals were imaged with both (11)C-PBR28 (approximately 19 MBq IV) and subsequent (18) F-FDG (approximately 37 MBq IV) microPET on the same day 14 days post PPE exposure. In addition, autoradiography of the retroperitoneal torso was performed after (11)C-PBR28 (approximately 1,480 MBq IV) or (18) F-FDG (approximately 185 MBq IV) administration at 14 days post PPE exposure. Aortic wall-to-muscle ratios (AMRs) were determined for microPET and autoradiography. CD68 and translocator protein (TSPO) immunohistochemistry (IHC), as well as TSPO gene expression assays, were performed for validation. RESULTS Mean 3 (p = 0.009), 7 (p < 0.0001) and 14 (p < 0.0001) days aortic diameter increases were significantly greater for APPE AAAs compared to IPPE controls. No significant differences in (18) F-FDG AMR were determined at days 3 and 7 post PPE exposure; however, at day 14, the mean (18) F-FDG AMR was significantly elevated in APPE AAAs compared to IPPE controls on both microPET (p = 0.0002) and autoradiography (p = 0.02). Similarly, mean (11)C-PBR28 AMR was significantly increased at day 14 in APPE AAAs compared to IPPE controls on both microPET (p = 0.04) and autoradiography (p = 0.02). For APPE AAAs, inhomogeneously increased (18) F-FDG and (11)C-PBR28 uptake was noted preferentially at the anterolateral aspect of the AAA. Compared to controls, APPE AAAs demonstrated significantly increased macrophage cell counts by CD68 IHC (p = 0.001) as well as increased TSPO staining (p = 0.004). Mean TSPO gene expression for APPE AAAs was also significantly elevated compared to IPPE controls (p = 0.0002). CONCLUSION Rat AAA wall inflammation can be visualized using (18) F-FDG and (11)C-PBR28 microPET revealing regional differences of radiotracer uptake on microPET and autoradiography. These results support further investigation of (18) F-FDG and (11)C-PBR28 in the noninvasive assessment of human AAA development.
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Affiliation(s)
- Sean J English
- />Conrad Jobst Vascular Research Laboratories, University of Michigan Health System, Ann Arbor, MI 48109 USA
| | - Jose A Diaz
- />Conrad Jobst Vascular Research Laboratories, University of Michigan Health System, Ann Arbor, MI 48109 USA
| | - Xia Shao
- />Division of Nuclear Medicine, Department of Radiology, University of Michigan Health System, Ann Arbor, MI 48109 USA
| | - David Gordon
- />Department of Pathology, University of Michigan Health System, Ann Arbor, MI 48109 USA
| | - Melissa Bevard
- />Division of Vascular and Endovascular Surgery, University of Virginia Health System, Charlottesville, VA 22903 USA
| | - Gang Su
- />Division of Vascular and Endovascular Surgery, University of Virginia Health System, Charlottesville, VA 22903 USA
| | - Peter K Henke
- />Conrad Jobst Vascular Research Laboratories, University of Michigan Health System, Ann Arbor, MI 48109 USA
| | - Virginia E Rogers
- />Division of Nuclear Medicine, Department of Radiology, University of Michigan Health System, Ann Arbor, MI 48109 USA
| | - Gilbert R Upchurch
- />Division of Vascular and Endovascular Surgery, University of Virginia Health System, Charlottesville, VA 22903 USA
| | - Morand Piert
- />Division of Nuclear Medicine, Department of Radiology, University of Michigan Health System, Ann Arbor, MI 48109 USA
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Wei Z, Wang Y, Zhang K, Liao Y, Ye P, Wu J, Wang Y, Li F, Yao Y, Zhou Y, Liu J. Inhibiting the Th17/IL-17A–Related Inflammatory Responses With Digoxin Confers Protection Against Experimental Abdominal Aortic Aneurysm. Arterioscler Thromb Vasc Biol 2014; 34:2429-38. [DOI: 10.1161/atvbaha.114.304435] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Zhanjie Wei
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Yu Wang
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Kailun Zhang
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Yaohang Liao
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Ping Ye
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Jie Wu
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Yang Wang
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Feifei Li
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Yufeng Yao
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Yanzhao Zhou
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
| | - Jinping Liu
- From the Department of Cardiovascular Surgery, Union Hospital (Z.W., K.Z., Y.L., P.Y., J.W., Y.W., F.L., J.L.) and Department of Biochemistry and Molecular Biology (Y.W.), Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China; Department of Cardiology, Central Hospital of Wuhan, Wuhan, China (P.Y.); and Key Laboratory of Molecular Biophysics of the Ministry of Education, Cardio-X Institute, College of Life Science and Technology and Center for Human Genome Research (Y.Y
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Deb PP, Ramamurthi A. Spatiotemporal mapping of matrix remodelling and evidence of in situ elastogenesis in experimental abdominal aortic aneurysms. J Tissue Eng Regen Med 2014; 11:231-245. [PMID: 24799390 DOI: 10.1002/term.1905] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2013] [Revised: 12/02/2013] [Accepted: 03/17/2014] [Indexed: 12/19/2022]
Abstract
Spatiotemporal changes in the extracellular matrix (ECM) were studied within abdominal aortic aneurysms (AAAs) generated in rats via elastase infusion. At 7, 14 and 21 days post-induction, AAA tissues were divided into proximal, mid- and distal regions, based on their location relative to the renal arteries and the region of maximal aortic diameter. Wall thicknesses differed significantly between the AAA spatial regions, initially increasing due to positive matrix remodelling and then decreasing due to wall thinning and compaction of matrix as the disease progressed. Histological images analysed using custom segmentation tools indicated significant differences in ECM composition and structure vs healthy tissue, and in the extent and nature of matrix remodelling between the AAA spatial regions. Histology and immunofluorescence (IF) labelling provided evidence of neointimal AAA remodelling, characterized by presence of elastin-containing fibres. This remodelling was effected by smooth muscle α-actin-positive neointimal cells, which transmission electron microscopy (TEM) showed to differ morphologically from medial SMCs. TEM of the neointima further showed the presence of elongated deposits of amorphous elastin and the presence of nascent, but not mature, elastic fibres. These structures appeared to be deficient in at least one microfibrillar component, fibrillin-1, which is critical to mature elastic fibre assembly. The substantial production of elastin and elastic fibre-like structures that we observed in the AAA neointima, which was not observed elsewhere within AAA tissues, provides a unique opportunity to capitalize on this autoregenerative phenomenon and direct it from the standpoint of matrix organization towards restoring healthy aortic matrix structure, mechanics and function. Copyright © 2014 John Wiley & Sons, Ltd.
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Affiliation(s)
- Partha Pratim Deb
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA
| | - Anand Ramamurthi
- Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, USA.,Department of Biomedical Engineering, Cleveland Clinic, Cleveland, OH, USA
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Mikołajczyk-Stecyna J, Korcz A, Gabriel M, Pawlaczyk K, Oszkinis G, Słomski R. Risk factors in abdominal aortic aneurysm and in Polish population aortoiliac occlusive disease and differences between them [corrected]. Sci Rep 2013; 3:3528. [PMID: 24346221 PMCID: PMC3866687 DOI: 10.1038/srep03528] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 11/18/2013] [Indexed: 11/09/2022] Open
Abstract
Abdominal aortic aneurysm (AAA) and aortoiliac occlusive disease (AIOD) are multifactorial vascular disorders caused by complex genetic and environmental factors. The purpose of this study was to define risk factors of AAA and AIOD in the Polish population and indicate differences between diseases.
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Affiliation(s)
| | - Aleksandra Korcz
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, 60-479, Poland
| | - Marcin Gabriel
- Department of Vascular Surgery, Poznan University of Medical Sciences, Poznan, 61-848, Poland
| | - Katarzyna Pawlaczyk
- Department of Hypertension, Internal Medicine, and Vascular Diseases, Poznan University of Medical Sciences, Poznan, 61-848, Poland
| | - Grzegorz Oszkinis
- Department of Vascular Surgery, Poznan University of Medical Sciences, Poznan, 61-848, Poland
| | - Ryszard Słomski
- Institute of Human Genetics, Polish Academy of Sciences, Poznan, 60-479, Poland
- Department of Biochemistry and Biotechnology of the Poznan University of Life Sciences, Poznan, 60-632, Poland
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Abdulkareem N, Skroblin P, Jahangiri M, Mayr M. Proteomics in aortic aneurysm - What have we learnt so far? Proteomics Clin Appl 2013; 7:504-15. [DOI: 10.1002/prca.201300016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2012] [Revised: 02/07/2013] [Accepted: 02/25/2013] [Indexed: 01/14/2023]
Affiliation(s)
- Nada Abdulkareem
- Department of Cardiothoracic Surgery; St. George's Hospital University of London; London UK
| | - Philipp Skroblin
- King's British Heart Foundation Centre; King's College London; London UK
| | - Marjan Jahangiri
- Department of Cardiothoracic Surgery; St. George's Hospital University of London; London UK
| | - Manuel Mayr
- King's British Heart Foundation Centre; King's College London; London UK
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