1
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Golledge J, Lu HS, Curci JA. Small AAAs: Recommendations for Rodent Model Research for the Identification of Novel Therapeutics. Arterioscler Thromb Vasc Biol 2024; 44:1467-1473. [PMID: 38924435 PMCID: PMC11384288 DOI: 10.1161/atvbaha.124.320823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 05/20/2024] [Indexed: 06/28/2024]
Abstract
CLINICAL PROBLEM Most abdominal aortic aneurysms (AAAs) are small with low rupture risk (<1%/y) when diagnosed but slowly expand to ≥55 mm and undergo surgical repair. Patients and clinicians require medications to limit AAA growth and rupture, but drugs effective in animal models have not translated to patients. RECOMMENDATIONS FOR INCREASING TRANSLATION FROM MOUSE MODELS Use models that simulate human AAA tissue pathology, growth patterns, and rupture; focus on the clinically relevant outcomes of growth and rupture; design studies with the rigor required of human clinical trials; monitor AAA growth using reproducible ultrasound; and perform studies in both males and females. SUMMARY OF STRENGTHS AND WEAKNESSES OF MOUSE MODELS The aortic adventitial elastase oral β-aminopropionitrile model has many strengths including simulating human AAA pathology and modeling prolonged aneurysm growth. The Ang II (angiotensin II) model performed less well as it better simulates acute aortic syndrome than AAA. The elastase plus TGFβ (transforming growth factor-β) blocking antibody model displays a high rupture rate, making prolonged monitoring of AAA growth not feasible. The elastase perfusion and calcium chloride models both display limited AAA growth.
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Affiliation(s)
- Jonathan Golledge
- Queensland Research Centre for Peripheral Vascular Disease, College of Medicine and Dentistry, James Cook University, Townsville, Australia (J.G.)
- Department of Vascular and Endovascular Surgery, Townsville University Hospital, Queensland, Australia (J.G.)
- The Australian Institute of Tropical Health and Medicine, Townsville, Queensland, Australia (J.G.)
| | - Hong S Lu
- Saha Cardiovascular Research Center, Department of Physiology, College of Medicine, University of Kentucky, Lexington (H.S.L.)
| | - John A Curci
- Department of Vascular Surgery, Vanderbilt Section of Surgical Sciences, Vanderbilt University Medical Center, Nashville, TN (J.A.C.)
- Section of Vascular Surgery, Department of Surgery, Tennessee Valley Health System, VA Medical Center, Nashville (J.A.C.)
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2
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Singh J, Jackson KL, Tang FS, Fu T, Nowell C, Salimova E, Kiriazis H, Ritchie RH, Head GA, Woodman OL, Qin CX. The pro-resolving mediator, annexin A1 regulates blood pressure, and age-associated changes in cardiovascular function and remodeling. FASEB J 2024; 38:e23457. [PMID: 38318648 DOI: 10.1096/fj.202301802r] [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: 09/05/2023] [Revised: 12/21/2023] [Accepted: 01/18/2024] [Indexed: 02/07/2024]
Abstract
Aging is associated with chronic, low-level inflammation which may contribute to cardiovascular pathologies such as hypertension and atherosclerosis. This chronic inflammation may be opposed by endogenous mechanisms to limit inflammation, for example, by the actions of annexin A1 (ANXA1), an endogenous glucocorticoid-regulated protein that has anti-inflammatory and pro-resolving activity. We hypothesized the pro-resolving mediator ANXA1 protects against age-induced changes in blood pressure (BP), cardiovascular structure and function, and cardiac senescence. BP was measured monthly in conscious mature (4-month) and middle-aged (12-month) ANXA1-deficient (ANXA1-/- ) and wild-type C57BL/6 mice. Body composition was measured using EchoMRI, and both cardiac and vascular function using ultrasound imaging. Cardiac hypertrophy, fibrosis and senescence, vascular fibrosis, elastin, and calcification were assessed histologically. Gene expression relevant to structural remodeling, inflammation, and cardiomyocyte senescence were also quantified. In C57BL/6 mice, progression from 4 to 12 months of age did not affect the majority of cardiovascular parameters measured, with the exception of mild cardiac hypertrophy, vascular calcium, and collagen deposition. Interestingly, ANXA1-/- mice exhibited higher BP, regardless of age. Additionally, age progression had a marked impact in ANXA1-/- mice, with markedly augmented vascular remodeling, impaired vascular distensibility, and body composition. Consistent with vascular dysfunction, cardiac dysfunction, and hypertrophy were also evident, together with markers of senescence and inflammation. These findings suggest that endogenous ANXA1 plays a critical role in regulating BP, cardiovascular function, and remodeling and delays cardiac senescence. Our findings support the development of novel ANXA1-based therapies to prevent age-related cardiovascular pathologies.
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Affiliation(s)
- Jaideep Singh
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Kristy L Jackson
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Feng Shii Tang
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Ting Fu
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Cameron Nowell
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Ekaterina Salimova
- Monash Biomedical Imaging, Monash University, Clayton, Melbourne, Victoria, Australia
| | - Helen Kiriazis
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Rebecca H Ritchie
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Cardiometabolic Health, University of Melbourne, Melbourne, Victoria, Australia
| | - Geoffrey A Head
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
| | - Owen L Woodman
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
| | - Cheng Xue Qin
- Drug Discovery Biology, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, Australia
- Baker Heart & Diabetes Institute, Melbourne, Victoria, Australia
- Department of Pharmacology, School of Pharmaceutical Sciences, Qilu College of Medicine, Shandong University, Jinan, China
- Department of Emergency Medicine, Qilu Hospital of Shandong University, Jinan, China
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3
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Harrison DG, Bader M, Lerman LO, Fink G, Karumanchi SA, Reckelhoff JF, Sequeira-Lopez MLS, Touyz RM. Tail-Cuff Versus Radiotelemetry to Measure Blood Pressure in Mice and Rats. Hypertension 2024; 81:3-5. [PMID: 37990918 PMCID: PMC10842069 DOI: 10.1161/hypertensionaha.123.22329] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Affiliation(s)
- D G Harrison
- Division of Clinical Pharmacology, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN (D.G.H.)
| | - M Bader
- Max-Delbrück-Center for Molecular Medicine, Berlin, Germany (M.B.)
| | - L O Lerman
- Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN (L.O.L.)
| | - G Fink
- Department of Pharmacology and Toxicology, Michigan State University, College of Osteopathic Medicine, East Lansing (G.F.)
| | - S A Karumanchi
- Department of Medicine, Cedars-Sinai Medical Center, Los Angeles, CA (S.A.K.)
| | - J F Reckelhoff
- Department of Cell and Molecular Biology Women's Health Research Center, University of Mississippi Medical Center, Jackson (J.F.R.)
| | - M L S Sequeira-Lopez
- Department of Paediatrics, University of Virginia, Charlottesville (M.L.S.S.-L.)
| | - R M Touyz
- Research Institute of McGill University Health Centre, McGill University, Montreal, QC, Canada (R.M.T.)
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4
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Okuno K, Torimoto K, Kuroda R, Cicalese SM, Okuno Y, Kono R, Marumoto S, Utsunomiya H, Eguchi S. Infused juice concentrate of Japanese plum Prunus mume attenuates inflammatory vascular remodeling in a mouse model of hypertension induced by angiotensin II. Hypertens Res 2023; 46:1923-1933. [PMID: 37308550 DOI: 10.1038/s41440-023-01332-9] [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: 03/16/2023] [Revised: 04/20/2023] [Accepted: 05/13/2023] [Indexed: 06/14/2023]
Abstract
Fruit from the Prunus mume tree is a traditional food in Japan. Recently, bainiku-ekisu, an infused juice concentrate of Japanese Prunus mume, is attracting attention as a health promoting supplement. Angiotensin II (Ang II) plays a central role in development of hypertension. It has been reported that bainiku-ekisu treatment attenuates the growth-promoting signaling induced by Ang II in vascular smooth muscle cells. However, whether bainiku-ekisu has any effect on an animal model of hypertension remains unknown. Therefore, this study was designed to explore the potential anti-hypertensive benefit of bainiku-ekisu utilizing a mouse model of hypertension with Ang II infusion. Male C57BL/6 mice were infused with Ang II for 2 weeks and given 0.1% bainiku-ekisu containing water or normal water for 2 weeks with blood pressure evaluation. After 2 weeks, mice were euthanized, and the aortas were collected for evaluation of remodeling. Aortic medial hypertrophy was observed in control mice after Ang II infusion, which was attenuated in bainiku-ekisu group with Ang II infusion. Bainiku-ekisu further attenuated aortic induction of collagen producing cells and immune cell infiltration. Development of hypertension induced by Ang II was also prevented by bainiku-ekisu. Echocardiograph indicated protection of Ang II-induced cardiac hypertrophy by bainiku-ekisu. In vascular fibroblasts, bainiku-ekisu attenuated vascular cell adhesion molecule-1 induction, an endoplasmic reticulum stress marker, inositol requiring enzyme-1α phosphorylation, and enhancement in glucose consumption in response to Ang II. In conclusion, Bainiku-ekisu prevented Ang II-induced hypertension and inflammatory vascular remodeling. Potential cardiovascular health benefit to taking bainiku-ekisu should be further studied.
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Affiliation(s)
- Keisuke Okuno
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Keiichi Torimoto
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Ryohei Kuroda
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Stephanie M Cicalese
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA
| | - Yoshiharu Okuno
- National Institute of Technology, Wakayama College, Gobo, Japan
| | - Ryohei Kono
- Department of Rehabilitation, Osaka Kawasaki Rehabilitation University, Kaizuka, Osaka, Japan
| | | | - Hirotoshi Utsunomiya
- Department of Rehabilitation, Osaka Kawasaki Rehabilitation University, Kaizuka, Osaka, Japan.
| | - Satoru Eguchi
- Department of Cardiovascular Science, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, USA.
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5
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Kemper PPN, Mahmoudi S, Apostolakis IZ, Konofagou EE. Feasibility of Bilinear Mechanical Characterization of the Abdominal Aorta in a Hypertensive Mouse Model. ULTRASOUND IN MEDICINE & BIOLOGY 2021; 47:3480-3490. [PMID: 34507874 PMCID: PMC8693438 DOI: 10.1016/j.ultrasmedbio.2021.08.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 07/28/2021] [Accepted: 08/01/2021] [Indexed: 05/19/2023]
Abstract
A change in elastin and collagen content is indicative of damage caused by hypertension, which changes the non-linear behavior of the vessel wall. This study was aimed at investigating the feasibility of monitoring the non-linear material behavior in an angiotensin II hypertensive mice model. Aortas from 13 hypertensive mice were imaged with pulse wave imaging (PWI) over 4 wk using a 40-MHz linear array. The pulse wave velocity was estimated using two wave features: (i) the maximum axial acceleration of the foot (PWVdia) and (ii) the maximum axial acceleration of the dicrotic notch (PWVend-sys). The Bramwell-Hill equation was used to derive the compliance at diastolic and end-systolic pressure. This study determined the potential of PWI in a hypertensive mouse model to image and quantify the non-linear material behavior in vivo. End-systolic compliance could differentiate between the sham and angiotensin II groups, whereas diastolic compliance could not, indicating that PWI can detect early collagen-dominated remodeling.
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Affiliation(s)
- Paul P N Kemper
- Ultrasound and Elasticity Imaging Laboratory, Department of Biomedical Engineering, Columbia University, New York, New York, USA.
| | - Salah Mahmoudi
- Ultrasound and Elasticity Imaging Laboratory, Department of Biomedical Engineering, Columbia University, New York, New York, USA
| | - Iason Zacharias Apostolakis
- Ultrasound and Elasticity Imaging Laboratory, Department of Biomedical Engineering, Columbia University, New York, New York, USA
| | - Elisa E Konofagou
- Ultrasound and Elasticity Imaging Laboratory, Department of Biomedical Engineering, Columbia University, New York, New York, USA; Department of Radiology, Columbia University, New York, New York, USA
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6
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Ghaghada KB, Ren P, Devkota L, Starosolski Z, Zhang C, Vela D, Stupin IV, Tanifum EA, Annapragada AV, Shen YH, LeMaire SA. Early Detection of Aortic Degeneration in a Mouse Model of Sporadic Aortic Aneurysm and Dissection Using Nanoparticle Contrast-Enhanced Computed Tomography. Arterioscler Thromb Vasc Biol 2021; 41:1534-1548. [PMID: 33535789 PMCID: PMC7990703 DOI: 10.1161/atvbaha.120.315210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Ketan B Ghaghada
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston (K.B.G., L.D., Z.S., I.V.S., E.A.T., A.V.A.)
- Department of Radiology (K.B.G., Z.S., E.A.T., A.V.A.), Baylor College of Medicine, Houston, TX
- Cardiovascular Research Institute (K.B.G., A.V.A., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
| | - Pingping Ren
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery (P.R., C.Z., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
| | - Laxman Devkota
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston (K.B.G., L.D., Z.S., I.V.S., E.A.T., A.V.A.)
- Department of Pediatrics, Section of Hematology-Oncology (L.D.), Baylor College of Medicine, Houston, TX
| | - Zbigniew Starosolski
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston (K.B.G., L.D., Z.S., I.V.S., E.A.T., A.V.A.)
- Department of Radiology (K.B.G., Z.S., E.A.T., A.V.A.), Baylor College of Medicine, Houston, TX
| | - Chen Zhang
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery (P.R., C.Z., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
| | - Deborah Vela
- Department of Cardiovascular Pathology Research (D.V.), Texas Heart Institute, Houston
| | - Igor V Stupin
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston (K.B.G., L.D., Z.S., I.V.S., E.A.T., A.V.A.)
| | - Eric A Tanifum
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston (K.B.G., L.D., Z.S., I.V.S., E.A.T., A.V.A.)
- Department of Radiology (K.B.G., Z.S., E.A.T., A.V.A.), Baylor College of Medicine, Houston, TX
| | - Ananth V Annapragada
- Edward B. Singleton Department of Radiology, Texas Children's Hospital, Houston (K.B.G., L.D., Z.S., I.V.S., E.A.T., A.V.A.)
- Department of Radiology (K.B.G., Z.S., E.A.T., A.V.A.), Baylor College of Medicine, Houston, TX
- Cardiovascular Research Institute (K.B.G., A.V.A., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
| | - Ying H Shen
- Cardiovascular Research Institute (K.B.G., A.V.A., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery (P.R., C.Z., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
- Department of Cardiovascular Surgery (Y.H.S., S.A.L.), Texas Heart Institute, Houston
| | - Scott A LeMaire
- Cardiovascular Research Institute (K.B.G., A.V.A., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
- Division of Cardiothoracic Surgery, Michael E. DeBakey Department of Surgery (P.R., C.Z., Y.H.S., S.A.L.), Baylor College of Medicine, Houston, TX
- Department of Cardiovascular Surgery (Y.H.S., S.A.L.), Texas Heart Institute, Houston
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7
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Luther JM, Fogo AB. Under pressure-how to assess blood pressure in rodents: tail-cuff? Kidney Int 2020; 96:34-36. [PMID: 31229047 DOI: 10.1016/j.kint.2018.12.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/19/2018] [Accepted: 12/21/2018] [Indexed: 10/26/2022]
Affiliation(s)
- James Matthew Luther
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Agnes B Fogo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Department of Medicine, Pathology, Microbiology and Immunology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
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8
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Luft FC. Men, mice, and blood pressure: telemetry? Kidney Int 2020; 96:31-33. [PMID: 31229046 DOI: 10.1016/j.kint.2018.12.033] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Revised: 12/03/2018] [Accepted: 12/06/2018] [Indexed: 11/17/2022]
Affiliation(s)
- Friedrich C Luft
- Experimental and Clinical Research Center, Max-Delbrück Center for Molecular Medicine, Medical Faculty of the Charité, Berlin, Germany.
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9
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Aslanidou L, Trachet B, Sasset L, Lovric G, Stergiopulos N, Di Lorenzo A. Early Morphofunctional Changes in AngII-Infused Mice Contribute to Regional Onset of Aortic Aneurysm and Dissection. J Vasc Res 2020; 57:367-375. [PMID: 32937637 DOI: 10.1159/000509545] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 06/15/2020] [Indexed: 12/20/2022] Open
Abstract
Aortic aneurysms and dissections are silent and lethal conditions, whose pathogenesis remains incompletely understood. Although angiotensin II (AngII)-infused ApoE-/- mice have been widely used to study aortic aneurysm and dissection, early morphofunctional alterations preceding the onset of these conditions remain unknown. The goal of this study was to unveil early morphofunctional changes underlying the onset of aneurysm and dissection. At 3 days post-AngII infusion, suprarenal abdominal aorta presented significant volumetric dilatation and microstructural damage. Ex vivo assessment of vascular reactivity of the suprarenal dissection-prone aorta and its side branches, showed an endothelial and contractile dysfunctions that were severe in the suprarenal aorta, moderate distally, and absent in the side branches, mirroring the susceptibility to dissection of these different vascular segments. Early and specific morphofunctional changes of the suprarenal aorta may contribute to the regional onset of aortic aneurysm and dissection by exacerbating the biomechanical burden arising from its side branches.
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Affiliation(s)
- Lydia Aslanidou
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Department of Pathology and Laboratory Medicine, Cardiovascular Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Bram Trachet
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,BioMMeda, Ghent University, Ghent, Belgium
| | - Linda Sasset
- Department of Pathology and Laboratory Medicine, Cardiovascular Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA
| | - Goran Lovric
- Centre d'Imagerie BioMédicale, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.,Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
| | - Nikolaos Stergiopulos
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Annarita Di Lorenzo
- Department of Pathology and Laboratory Medicine, Cardiovascular Research Institute, Feil Family Brain and Mind Research Institute, Weill Cornell Medicine, New York, New York, USA,
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10
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Brzezinski RY, Ovadia-Blechman Z, Lewis N, Rabin N, Zimmer Y, Levin-Kotler L, Tepper-Shaihov O, Naftali-Shani N, Tsoref O, Grossman E, Leor J, Hoffer O. Non-invasive thermal imaging of cardiac remodeling in mice. BIOMEDICAL OPTICS EXPRESS 2019; 10:6189-6203. [PMID: 31853394 PMCID: PMC6913410 DOI: 10.1364/boe.10.006189] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 09/26/2019] [Accepted: 10/24/2019] [Indexed: 06/10/2023]
Abstract
Thermal infrared imaging has been suggested as a non-invasive alternative to monitor physiological processes and disease. However, the use of this technique to image internal organs, such as the heart, has not yet been investigated. We sought to determine the ability of our novel thermal image-processing algorithm to detect structural and functional changes in a mouse model of hypertension and cardiac remodeling. Twelve mice were randomly assigned to receive either the pro-inflammatory, hypertensive hormone angiotensin-II (2 mg/kg/day, n = 6) or saline (n = 6) infusion for 28 days. We performed weekly blood pressure measurements, together with serial trans-thoracic echocardiography studies and histopathological evaluation of the hearts. Thermal images were captured with a commercially available thermal camera, and images were processed by our novel algorithm which analyzes relative spatial temperature variation across the animal's thorax. We assessed cardiac inflammation by measuring inflammatory cell infiltration through flow cytometry. Angiotensin infusion increased blood pressure together with cardiac hypertrophy and fibrosis. Thermal imaging at day 28 of the experiment detected an increase in the fraction of the skin heated by the heart in angiotensin-treated mice. Thermal image findings were significantly correlated to left ventricular volume and mass parameters seen on echocardiography (r = 0.8, p < 0.01 and r = 0.6, p = 0.07). We also identified distinct changes in the spatial heat profiles of all angiotensin-treated hearts, possibly reflecting remodeling processes in the hypertensive heart. Finally, a machine learning based model using thermal imaging parameters predicted intervention status in 10 out of 11 mice similar to a model using echocardiographic measurements. Our findings suggest, for the first time, that a new thermal image-processing algorithm successfully correlates surface thermography with cardiac structural changes in mice with hypertensive heart disease.
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Affiliation(s)
- Rafael Y. Brzezinski
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Neufeld Cardiac Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Zehava Ovadia-Blechman
- School of Medical Engineering, Afeka Tel Aviv Academic College of Engineering, Tel Aviv, 6910717, Israel
| | - Nir Lewis
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Neufeld Cardiac Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Neta Rabin
- Department of Industrial Engineering, Tel-Aviv University, Tel Aviv, 6997801, Israel
| | - Yair Zimmer
- School of Medical Engineering, Afeka Tel Aviv Academic College of Engineering, Tel Aviv, 6910717, Israel
| | - Lapaz Levin-Kotler
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Neufeld Cardiac Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Olga Tepper-Shaihov
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Neufeld Cardiac Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Nili Naftali-Shani
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Neufeld Cardiac Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Olga Tsoref
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Neufeld Cardiac Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Ehud Grossman
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Internal Medicine Wing, and Hypertension Unit, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Jonathan Leor
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, 6997801, Israel
- Neufeld Cardiac Research Institute, Sackler Faculty of Medicine, Tel Aviv University, Israel; Tamman Cardiovascular Research Institute, Leviev Heart Center, Sheba Medical Center, Tel Hashomer, 52621, Israel
| | - Oshrit Hoffer
- School of Electrical Engineering, Afeka Tel Aviv Academic College of Engineering, Tel Aviv, 6910717, Israel
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11
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Aslanidou L, Ferraro M, Lovric G, Bersi MR, Humphrey JD, Segers P, Trachet B, Stergiopulos N. Co-localization of microstructural damage and excessive mechanical strain at aortic branches in angiotensin-II-infused mice. Biomech Model Mechanobiol 2019; 19:81-97. [PMID: 31273562 DOI: 10.1007/s10237-019-01197-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Accepted: 06/26/2019] [Indexed: 02/07/2023]
Abstract
Animal models of aortic aneurysm and dissection can enhance our limited understanding of the etiology of these lethal conditions particularly because early-stage longitudinal data are scant in humans. Yet, the pathogenesis of often-studied mouse models and the potential contribution of aortic biomechanics therein remain elusive. In this work, we combined micro-CT and synchrotron-based imaging with computational biomechanics to estimate in vivo aortic strains in the abdominal aorta of angiotensin-II-infused ApoE-deficient mice, which were compared with mouse-specific aortic microstructural damage inferred from histopathology. Targeted histology showed that the 3D distribution of micro-CT contrast agent that had been injected in vivo co-localized with precursor vascular damage in the aortic wall at 3 days of hypertension, with damage predominantly near the ostia of the celiac and superior mesenteric arteries. Computations similarly revealed higher mechanical strain in branching relative to non-branching regions, thus resulting in a positive correlation between high strain and vascular damage in branching segments that included the celiac, superior mesenteric, and right renal arteries. These results suggest a mechanically driven initiation of damage at these locations, which was supported by 3D synchrotron imaging of load-induced ex vivo delaminations of angiotensin-II-infused suprarenal abdominal aortas. That is, the major intramural delamination plane in the ex vivo tested aortas was also near side branches and specifically around the celiac artery. Our findings thus support the hypothesis of an early mechanically mediated formation of microstructural defects at aortic branching sites that subsequently propagate into a macroscopic medial tear, giving rise to aortic dissection in angiotensin-II-infused mice.
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Affiliation(s)
- Lydia Aslanidou
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland.
| | - Mauro Ferraro
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
| | - Goran Lovric
- Centre d'Imagerie BioMédicale, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
- Swiss Light Source, Paul Scherrer Institute, Villigen, Switzerland
| | - Matthew R Bersi
- Department of Biomedical Engineering, Yale University, New Haven, USA
- Department of Biomedical Engineering, Vanderbilt University, Nashville, USA
| | - Jay D Humphrey
- Department of Biomedical Engineering, Yale University, New Haven, USA
| | | | - Bram Trachet
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
- bioMMeda, Ghent University, Ghent, Belgium
| | - Nikos Stergiopulos
- Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland
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12
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Chen JZ, Sawada H, Moorleghen JJ, Weiland M, Daugherty A, Sheppard MB. Aortic Strain Correlates with Elastin Fragmentation in Fibrillin-1 Hypomorphic Mice. Circ Rep 2019; 1:199-205. [PMID: 31123721 PMCID: PMC6528667 DOI: 10.1253/circrep.cr-18-0012] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Background High frequency ultrasound has facilitated in vivo measurements of murine ascending aortas, allowing aortic strains to be gleaned from two-dimensional images. Thoracic aortic aneurysms associated with mutations in fibrillin-1 (FBN1) display elastin fragmentation, which may impact aortic strain. In this study, we determined the relationship between elastin fragmentation and aortic circumferential strain in wild type and fibrillin-1 hypomorphic (FBN1 mgR/mgR) mice. Methods and Results Luminal diameters of the ascending aorta from wild type and FBN1 hypomorphic (FBN1 mgR/mgR) mice were measured in systole and diastole. Expansion of the ascending aorta during systole in male and female wild type mice was 0.21±0.02 mm (16.3%) and 0.21±0.01 mm (17.0%) respectively, while expansion in male and female FBN1 mgR/mgR mice was 0.11±0.04 mm (4.9%) and 0.07±0.02 mm (4.5%) respectively. Reduced circumferential strain was observed in FBN1 mgR/mgR mice compared to wild type littermates. Elastin fragmentation was inversely correlated to circumferential strain (R^2 = 0.628 p = 0.004) and significantly correlated with aortic diameter. (R^2 = 0.397, p = 0.038 in systole and R^2 = 0.515, p =0.013 in diastole). Conclusions FBN1 mgR/mgR mice had increased aortic diameters, reduced circumferential strain, and increased elastin fragmentation. Elastin fragmentation in FBN1 mgR/mgR and their wild type littermates was correlated with reduced circumferential strain.
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Affiliation(s)
- Jeff Z Chen
- Saha Cardiovascular Research Center.,Department of Physiology
| | | | | | | | - Alan Daugherty
- Saha Cardiovascular Research Center.,Department of Physiology
| | - Mary B Sheppard
- Saha Cardiovascular Research Center.,Department of Physiology.,Department of Family and Community Medicine.,Department of Surgery, University of Kentucky, Lexington, KY
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13
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Singh MV, Cicha MZ, Nunez S, Meyerholz DK, Chapleau MW, Abboud FM. Angiotensin II-induced hypertension and cardiac hypertrophy are differentially mediated by TLR3- and TLR4-dependent pathways. Am J Physiol Heart Circ Physiol 2019; 316:H1027-H1038. [PMID: 30793936 DOI: 10.1152/ajpheart.00697.2018] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Toll-like receptors (TLR) are key components of the innate immune system that elicit inflammatory responses through the adaptor proteins myeloid differentiation protein 88 (MyD88) and Toll-interleukin receptor domain-containing adaptor protein-inducing interferon-β (TRIF). Previously, we demonstrated that TRIF mediates the signaling of angiotensin II (ANG II)- induced hypertension and cardiac hypertrophy. Since TRIF is activated selectively by TLR3 and TLR4, our goals in this study were to determine the roles of TLR3 and TLR4 in mediating ANG II-induced hypertension and cardiac hypertrophy, and associated changes in proinflammatory gene expression in heart and kidney. In wild-type (WT) mice, ANG II infusion (1,000 ng·kg-1·min-1 for 3 wk) increased systolic blood pressure and caused cardiac hypertrophy. In ANG II-infused TLR4-deficient mice (Tlr4del), hypertrophy was significantly attenuated despite a preserved or enhanced hypertensive response. In contrast, in TLR3-deficient mice (Tlr3-/-), both ANG II-induced hypertension and hypertrophy were abrogated. In WT mice, ANG II increased the expression of several proinflammatory genes in hearts and kidneys that were attenuated in both TLR4- and TLR3-deficient mice compared with WT. We conclude that ANG II activates both TLR4-TRIF and TLR3-TRIF pathways in a nonredundant manner whereby hypertension is dependent on activation of the TLR3-TRIF pathway and cardiac hypertrophy is dependent on both TLR3-TRIF and TLR4-TRIF pathways. NEW & NOTEWORTHY Angiotensin II (ANG II)-induced hypertension is dependent on the endosomal Toll-like receptor 3 (TLR3)-Toll-interleukin receptor domain-containing adaptor protein-inducing interferon-β (TRIF) pathway of the innate immune system but not on cell membrane localized TLR4. However, ANG II-induced cardiac hypertrophy is regulated by both TLR4-TRIF and TLR3-TRIF pathways. Thus, ANG II-induced rise in systolic blood pressure is independent of TLR4-TRIF effect on cardiac hypertrophy. The TLR3-TRIF pathway may be a potential target of therapeutic intervention.
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Affiliation(s)
- Madhu V Singh
- Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa , Iowa City, Iowa
| | - Michael Z Cicha
- Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa , Iowa City, Iowa
| | - Sarah Nunez
- Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa , Iowa City, Iowa
| | - David K Meyerholz
- Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, Iowa
| | - Mark W Chapleau
- Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa , Iowa City, Iowa.,Department of Internal Medicine, Department of Molecular Physiology and Biophysics, Carver College of Medicine, University of Iowa , Iowa City, Iowa.,Veterans Affairs Medical Center , Iowa City, Iowa
| | - François M Abboud
- Abboud Cardiovascular Research Center, Carver College of Medicine, University of Iowa , Iowa City, Iowa.,Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, Iowa
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14
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Fink GD. Does Tail-Cuff Plethysmography Provide a Reliable Estimate of Central Blood Pressure in Mice? J Am Heart Assoc 2017; 6:JAHA.117.006554. [PMID: 28655736 PMCID: PMC5669206 DOI: 10.1161/jaha.117.006554] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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15
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Perez J, Diaz N, Tandon I, Plate R, Martindale C, Balachandran K. Elevated Serotonin Interacts with Angiotensin-II to Result in Altered Valve Interstitial Cell Contractility and Remodeling. Cardiovasc Eng Technol 2017; 9:168-180. [PMID: 28247311 DOI: 10.1007/s13239-017-0298-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Accepted: 02/22/2017] [Indexed: 01/30/2023]
Abstract
While the valvulopathic effects of serotonin (5HT) and angiotensin-II (Ang-II) individually are known, it was not clear how 5HT and Ang-II might interact, specifically in the context of the mechanobiological responses due to altered valve mechanics potentiated by these molecules. In this context, the hypothesis of this study was that increased serotonin levels would result in accelerated progression toward disease in the presence of angiotensin-II-induced hypertension. C57/BL6 J mice were divided into four groups and subcutaneously implanted with osmotic pumps containing: PBS (control), 5HT (2.5 ng/kg/min), Ang-II (400 ng/kg/min), and 5HT + Ang-II (combination). Blood pressure was monitored using the tail cuff method. Echocardiography was performed on the mice before surgery and every week thereafter to assess ejection fraction. After three weeks, the mice were sacrificed and their hearts excised, embedded and sectioned for analysis of the aortic valves via histology and immunohistochemistry. In separate experiments, porcine valve interstitial cells (VICs) were directly stimulated with 5HT (10-7 M), Ang-II (100 nM) or both and assayed for cellular contractility, cytoskeletal organization and collagen remodeling. After three weeks, average systolic blood pressure was significantly increased in the 5HT, Ang-II and combination groups compared to control. Echocardiographic analysis demonstrated significantly reduced ejection fraction in Ang-II and the combination groups. H&E staining demonstrated thicker leaflets in the combination groups, suggesting a more aggressive remodeling process. Picrosirius red staining and image analysis suggested that the Ang-II and combination groups had the largest proportion of thicker collagen fibers. VIC orientation, cellular contractility and collagen gene expression was highest for the 5HT + Ang-II combination treatment compared to all other groups. Overall, our results suggest that 5HT and Ang-II interact to result in significantly detrimental alteration of function and remodeling in the valve.
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Affiliation(s)
- Jessica Perez
- Department of Biomedical Engineering, University of Arkansas, 122 John A. White Jr. Engineering Hall, Fayetteville, AR, 72701, USA
| | - Nancy Diaz
- Department of Biomedical Engineering, University of Arkansas, 122 John A. White Jr. Engineering Hall, Fayetteville, AR, 72701, USA
| | - Ishita Tandon
- Department of Biomedical Engineering, University of Arkansas, 122 John A. White Jr. Engineering Hall, Fayetteville, AR, 72701, USA
| | - Rachel Plate
- Department of Biomedical Engineering, University of Arkansas, 122 John A. White Jr. Engineering Hall, Fayetteville, AR, 72701, USA
| | - Christopher Martindale
- Department of Biomedical Engineering, University of Arkansas, 122 John A. White Jr. Engineering Hall, Fayetteville, AR, 72701, USA
| | - Kartik Balachandran
- Department of Biomedical Engineering, University of Arkansas, 122 John A. White Jr. Engineering Hall, Fayetteville, AR, 72701, USA.
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16
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Raffort J, Lareyre F, Clement M, Mallat Z. Micro-RNAs in abdominal aortic aneurysms: insights from animal models and relevance to human disease. Cardiovasc Res 2016; 110:165-77. [PMID: 26965051 DOI: 10.1093/cvr/cvw046] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2015] [Accepted: 01/28/2016] [Indexed: 01/09/2023] Open
Abstract
Abdominal aortic aneurysm (AAA) is a major health concern and may be associated with high rates of mortality linked to acute complications. Diagnosis and treatment are, respectively, based on imaging and surgical techniques. Drug-based therapies are still mostly ineffective, which highlight a real unmet need. Major pathophysiological mechanisms leading to aneurysm formation involve inflammatory processes, degradation of the extracellular matrix, and loss of smooth muscle cells. However, the precise cellular and molecular pathways are still poorly understood. Recently, microRNAs have emerged as major intracellular players in a wide range of biological processes, and their stability in extracellular medium within microvesicles has led to propose them as mediators of intercellular crosstalk and as potential biomarkers and therapeutic targets in a variety of disease settings. To date, several studies have been performed to address the involvement of micro-RNAs (miRs) in aneurysm formation and complications. Here, we discuss the roles and implications of miRs in animal models and their relevance to human AAA.
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Affiliation(s)
- Juliette Raffort
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge CB20 SZ, UK University of Nice-Sophia Antipolis, Medical School, Nice 06107, France INSERM U1081, CNRS UMR7284, IRCAN, Nice, France Clinical Chemistry Laboratory, University Hospital of Nice, Nice, France
| | - Fabien Lareyre
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge CB20 SZ, UK University of Nice-Sophia Antipolis, Medical School, Nice 06107, France INSERM U1081, CNRS UMR7284, IRCAN, Nice, France Department of Vascular Surgery, University Hospital of Nice, Nice, France
| | - Marc Clement
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge CB20 SZ, UK
| | - Ziad Mallat
- Division of Cardiovascular Medicine, Department of Medicine, University of Cambridge, Cambridge CB20 SZ, UK Institut National de la Santé et de la Recherche Médicale (Inserm), Unit 970, Paris Cardiovascular Research Center, Paris 75015, France
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