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  1. Article ; Online: Acetylsalicylic Acid Reduces Passive Aortic Wall Stiffness and Cardiovascular Remodelling in a Mouse Model of Advanced Atherosclerosis

    Lynn Roth / Miche Rombouts / Dorien M. Schrijvers / Besa Emini Veseli / Wim Martinet / Guido R. Y. De Meyer

    International Journal of Molecular Sciences, Vol 23, Iss 404, p

    2022  Volume 404

    Abstract: Acetylsalicylic acid (ASA) is widely used in secondary prevention of cardiovascular (CV) disease, mainly because of its antithrombotic effects. Here, we investigated whether ASA can prevent the progression of vessel wall remodelling, atherosclerosis, and ...

    Abstract Acetylsalicylic acid (ASA) is widely used in secondary prevention of cardiovascular (CV) disease, mainly because of its antithrombotic effects. Here, we investigated whether ASA can prevent the progression of vessel wall remodelling, atherosclerosis, and CV complications in apolipoprotein E deficient ( ApoE −/− ) mice, a model of stable atherosclerosis, and in ApoE −/− mice with a mutation in the fibrillin-1 gene ( Fbn1 C1039G+/− ), which is a model of elastic fibre fragmentation, accompanied by exacerbated unstable atherosclerosis. Female ApoE −/− and ApoE −/− Fbn1 C1039G+/− mice were fed a Western diet (WD). At 10 weeks of WD, the mice were randomly divided into four groups, receiving either ASA 5 mg/kg/day in the drinking water ( ApoE −/− ( n = 14), ApoE −/− Fbn1 C1039G+/− ( n = 19)) or plain drinking water ( ApoE −/− ( n = 15), ApoE −/− Fbn1 C1039G+/− ( n = 21)) for 15 weeks. ApoE −/− Fbn1 C1039G+/− mice showed an increased neutrophil–lymphocyte ratio (NLR) compared to ApoE −/− mice, and this effect was normalised by ASA. In the proximal ascending aorta wall, ASA-treated ApoE −/− Fbn1 C1039G+/− mice showed less p-SMAD2/3 positive nuclei, a lower collagen percentage and an increased elastin/collagen ratio, consistent with the values measured in ApoE −/− mice. ASA did not affect plaque progression, incidence of myocardial infarction and survival of ApoE −/− Fbn1 C1039G+/− mice, but systolic blood pressure, cardiac fibrosis and hypertrophy were reduced. In conclusion, ASA normalises the NLR, passive wall stiffness and cardiac remodelling in ApoE −/− Fbn1 C1039G+/− mice to levels observed in ApoE −/− mice, indicating additional therapeutic benefits of ASA beyond its classical use.
    Keywords arterial stiffness ; neutrophil–lymphocyte ratio ; collagen ; SMAD ; elastin ; aspirin ; Biology (General) ; QH301-705.5 ; Chemistry ; QD1-999
    Language English
    Publishing date 2022-12-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Acetylsalicylic Acid Reduces Passive Aortic Wall Stiffness and Cardiovascular Remodelling in a Mouse Model of Advanced Atherosclerosis.

    Roth, Lynn / Rombouts, Miche / Schrijvers, Dorien M / Emini Veseli, Besa / Martinet, Wim / De Meyer, Guido R Y

    International journal of molecular sciences

    2021  Volume 23, Issue 1

    Abstract: Acetylsalicylic acid (ASA) is widely used in secondary prevention of cardiovascular (CV) disease, mainly because of its antithrombotic effects. Here, we investigated whether ASA can prevent the progression of vessel wall remodelling, atherosclerosis, and ...

    Abstract Acetylsalicylic acid (ASA) is widely used in secondary prevention of cardiovascular (CV) disease, mainly because of its antithrombotic effects. Here, we investigated whether ASA can prevent the progression of vessel wall remodelling, atherosclerosis, and CV complications in apolipoprotein E deficient (
    MeSH term(s) Animals ; Aorta/drug effects ; Aorta/pathology ; Aorta/physiopathology ; Apolipoproteins E/deficiency ; Apolipoproteins E/metabolism ; Aspirin/pharmacology ; Atherosclerosis/pathology ; Atherosclerosis/physiopathology ; Blood Pressure/drug effects ; Disease Models, Animal ; Disease Progression ; Female ; Fibrillin-1/metabolism ; Kaplan-Meier Estimate ; Lymphocytes/drug effects ; Lymphocytes/metabolism ; Mice ; Myocardial Infarction/physiopathology ; Neutrophils/drug effects ; Neutrophils/metabolism ; Vascular Remodeling/drug effects ; Vascular Stiffness/drug effects
    Chemical Substances Apolipoproteins E ; Fibrillin-1 ; Aspirin (R16CO5Y76E)
    Language English
    Publishing date 2021-12-30
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms23010404
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: MicroRNA-216a is essential for cardiac angiogenesis.

    Juni, Rio P / Kocken, Jordy M M / Abreu, Ricardo C / Ottaviani, Lara / Davalan, Tim / Duygu, Burcu / Poels, Ella M / Vasilevich, Aliaksei / Hegenbarth, Jana C / Appari, Mahesh / Bitsch, Nicole / Olieslagers, Serve / Schrijvers, Dorien M / Stoll, Monika / Heineke, Joerg / de Boer, Jan / de Windt, Leon J / da Costa Martins, Paula A

    Molecular therapy : the journal of the American Society of Gene Therapy

    2023  Volume 31, Issue 6, Page(s) 1807–1828

    Abstract: While it is experimentally supported that impaired myocardial vascularization contributes to a mismatch between myocardial oxygen demand and supply, a mechanistic basis for disruption of coordinated tissue growth and angiogenesis in heart failure remains ...

    Abstract While it is experimentally supported that impaired myocardial vascularization contributes to a mismatch between myocardial oxygen demand and supply, a mechanistic basis for disruption of coordinated tissue growth and angiogenesis in heart failure remains poorly understood. Silencing strategies that impair microRNA biogenesis have firmly implicated microRNAs in the regulation of angiogenesis, and individual microRNAs prove to be crucial in developmental or tumor angiogenesis. A high-throughput functional screening for the analysis of a whole-genome microRNA silencing library with regard to their phenotypic effect on endothelial cell proliferation as a key parameter, revealed several anti- and pro-proliferative microRNAs. Among those was miR-216a, a pro-angiogenic microRNA which is enriched in cardiac microvascular endothelial cells and reduced in expression under cardiac stress conditions. miR-216a null mice display dramatic cardiac phenotypes related to impaired myocardial vascularization and unbalanced autophagy and inflammation, supporting a model where microRNA regulation of microvascularization impacts the cardiac response to stress.
    MeSH term(s) Animals ; Mice ; Endothelial Cells/metabolism ; Heart Failure/metabolism ; MicroRNAs/metabolism ; Myocardium/metabolism ; Neovascularization, Pathologic/genetics ; Neovascularization, Pathologic/metabolism ; Neovascularization, Physiologic/genetics
    Chemical Substances MicroRNAs ; MIRN216 microRNA, mouse
    Language English
    Publishing date 2023-04-17
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2010592-7
    ISSN 1525-0024 ; 1525-0016
    ISSN (online) 1525-0024
    ISSN 1525-0016
    DOI 10.1016/j.ymthe.2023.04.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Defective Autophagy in Atherosclerosis: To Die or to Senesce?

    Grootaert, Mandy O J / Roth, Lynn / Schrijvers, Dorien M / De Meyer, Guido R Y / Martinet, Wim

    Oxidative medicine and cellular longevity

    2018  Volume 2018, Page(s) 7687083

    Abstract: Autophagy is a subcellular process that plays an important role in the degradation of proteins and damaged organelles such as mitochondria (a process termed "mitophagy") via lysosomes. It is crucial for regulating protein and mitochondrial quality ... ...

    Abstract Autophagy is a subcellular process that plays an important role in the degradation of proteins and damaged organelles such as mitochondria (a process termed "mitophagy") via lysosomes. It is crucial for regulating protein and mitochondrial quality control and maintaining cellular homeostasis, whereas dysregulation of autophagy has been implicated in a wide range of diseases including atherosclerosis. Recent evidence has shown that the autophagic process becomes dysfunctional during the progression of atherosclerosis, regardless of whether there are many autophagy-stimulating factors (e.g., reactive oxygen species, oxidized lipids, and cytokines) present within the atherosclerotic plaque. This review highlights the recent insights into the causes and consequences of defective autophagy in atherosclerosis, with a special focus on the role of autophagy and mitophagy in plaque macrophages, vascular smooth muscle cells (VSMCs), and endothelial cells (ECs). It has been shown that defective autophagy can promote apoptosis in macrophages but that it accelerates premature senescence in VSMCs. In the ECs, defective autophagy promotes both apoptosis and senescence. We will discuss the discrepancy between these three cell types in their response to autophagy deficiency and underline the cell type-dependent role of autophagy, which may have important implications for the efficacy of autophagy-targeted treatments for atherosclerosis.
    MeSH term(s) Animals ; Apoptosis/physiology ; Atherosclerosis/metabolism ; Atherosclerosis/physiopathology ; Autophagy/physiology ; Cellular Senescence/physiology ; Humans ; Mitochondrial Degradation/physiology
    Language English
    Publishing date 2018-02-26
    Publishing country United States
    Document type Journal Article ; Review
    ISSN 1942-0994
    ISSN (online) 1942-0994
    DOI 10.1155/2018/7687083
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Does patient-tailored immunotherapy pave the way for new renal cell carcinoma treatment perspectives?

    Van Brussel, Ilse / Van Craenenbroeck, Amaryllis H / Schrijvers, Dorien M / Cools, Nathalie

    Translational andrology and urology

    2016  Volume 2, Issue 2, Page(s) 85–88

    Language English
    Publishing date 2016-01-01
    Publishing country China
    Document type Journal Article
    ZDB-ID 2851630-8
    ISSN 2223-4691 ; 2223-4691 ; 2223-4683
    ISSN (online) 2223-4691
    ISSN 2223-4691 ; 2223-4683
    DOI 10.3978/j.issn.2223-4683.2012.10.02
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Cholesterol-independent effects of atorvastatin prevent cardiovascular morbidity and mortality in a mouse model of atherosclerotic plaque rupture.

    Roth, Lynn / Rombouts, Miche / Schrijvers, Dorien M / Martinet, Wim / De Meyer, Guido R Y

    Vascular pharmacology

    2016  Volume 80, Page(s) 50–58

    Abstract: Because cholesterol-independent effects of statins are difficult to determine in patients, we studied these pleiotropic effects in apolipoprotein E-deficient (ApoE(-/-)) mice with a mutation in the fibrillin-1 gene (Fbn1(C1039G+/-)). These mice develop ... ...

    Abstract Because cholesterol-independent effects of statins are difficult to determine in patients, we studied these pleiotropic effects in apolipoprotein E-deficient (ApoE(-/-)) mice with a mutation in the fibrillin-1 gene (Fbn1(C1039G+/-)). These mice develop exacerbated atherosclerosis and spontaneous plaque ruptures, accompanied by myocardial infarctions (MI) and sudden death. ApoE(-/-)Fbn1(C1039G+/-) mice were fed a Western diet (WD). At week 10 of WD, mice were divided in a control (WD), atorvastatin (10mg/kg/day + WD) and cholesterol withdrawal group (cholW, normal chow). The latter was included to compare the effects of atorvastatin with dietary lipid lowering. Fifteen weeks later, the mice were sacrificed. CholW, but not atorvastatin, reduced plasma cholesterol. Survival increased from 50% to 90% both in cholW and atorvastatin treated mice. CholW as well as atorvastatin treatment increased plaque collagen and fibrous cap thickness, but they did not affect the amount of plaque macrophages and T cells. MMP-2 and MMP-9 activity was significantly lower and the expression of MMP-12, TNF-α and IL-1β was strongly reduced in both treatment groups. Blood monocytes and neutrophils returned to baseline levels (ApoE(-/-) mice before the onset of atherosclerosis). Importantly, atorvastatin but not cholW significantly reduced coronary stenosis (from 50 to 28%) and the occurrence of MI (from 43 to 10%). In conclusion, independent of cholesterol lowering, atorvastatin significantly reduced mortality, plaque vulnerability and inflammation to the same extent as cholW. In addition, atorvastatin but not cholW reduced coronary stenosis and the occurrence of MI. These data unequivocally illustrate the significance of the pleiotropic effects of atorvastatin in the prevention of cardiovascular morbidity and mortality.
    MeSH term(s) Animal Feed ; Animals ; Anticholesteremic Agents/administration & dosage ; Anticholesteremic Agents/therapeutic use ; Apolipoproteins E/genetics ; Atorvastatin Calcium/administration & dosage ; Atorvastatin Calcium/therapeutic use ; Cholesterol/blood ; Cholesterol/deficiency ; Disease Models, Animal ; Female ; Fibrillin-1/genetics ; Hypercholesterolemia/blood ; Hypercholesterolemia/drug therapy ; Hypercholesterolemia/genetics ; Hypercholesterolemia/immunology ; Kaplan-Meier Estimate ; Mice, Knockout ; Plaque, Atherosclerotic/blood ; Plaque, Atherosclerotic/etiology ; Plaque, Atherosclerotic/immunology ; Plaque, Atherosclerotic/prevention & control ; Survival Analysis
    Chemical Substances Anticholesteremic Agents ; Apolipoproteins E ; Fbn1 protein, mouse ; Fibrillin-1 ; Atorvastatin Calcium (48A5M73Z4Q) ; Cholesterol (97C5T2UQ7J)
    Language English
    Publishing date 2016-05
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 2082846-9
    ISSN 1879-3649 ; 1537-1891 ; 1879-3649
    ISSN (online) 1879-3649 ; 1537-1891
    ISSN 1879-3649
    DOI 10.1016/j.vph.2016.01.007
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Caspase-3 Deletion Promotes Necrosis in Atherosclerotic Plaques of ApoE Knockout Mice.

    Grootaert, Mandy O J / Schrijvers, Dorien M / Hermans, Marthe / Van Hoof, Viviane O / De Meyer, Guido R Y / Martinet, Wim

    Oxidative medicine and cellular longevity

    2016  Volume 2016, Page(s) 3087469

    Abstract: Apoptosis of macrophages and vascular smooth muscle cells (VSMCs) in advanced atherosclerotic plaques contributes to plaque progression and instability. Caspase-3, a key executioner protease in the apoptotic pathway, has been identified in human and ... ...

    Abstract Apoptosis of macrophages and vascular smooth muscle cells (VSMCs) in advanced atherosclerotic plaques contributes to plaque progression and instability. Caspase-3, a key executioner protease in the apoptotic pathway, has been identified in human and mouse atherosclerotic plaques but its role in atherogenesis is not fully explored. We therefore investigated the impact of caspase-3 deletion on atherosclerosis by crossbreeding caspase-3 knockout (Casp3
    MeSH term(s) Animals ; Apolipoproteins E/deficiency ; Apoptosis ; Caspase 3/metabolism ; Mice ; Mice, Knockout ; Necrosis ; Plaque, Atherosclerotic/metabolism
    Chemical Substances Apolipoproteins E ; Caspase 3 (EC 3.4.22.-)
    Language English
    Publishing date 2016
    Publishing country United States
    Document type Journal Article
    ISSN 1942-0994
    ISSN (online) 1942-0994
    DOI 10.1155/2016/3087469
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Molecular and cellular mechanisms of macrophage survival in atherosclerosis.

    Martinet, Wim / Schrijvers, Dorien M / De Meyer, Guido R Y

    Basic research in cardiology

    2012  Volume 107, Issue 6, Page(s) 297

    Abstract: Macrophages play a key role in the initiation and progression of atherosclerotic plaques. Although a significant number of macrophages undergoes cell death during plaque development as a result of atherogenic stressors, advanced plaques are characterized ...

    Abstract Macrophages play a key role in the initiation and progression of atherosclerotic plaques. Although a significant number of macrophages undergoes cell death during plaque development as a result of atherogenic stressors, advanced plaques are characterized by a large macrophage content. Macrophage accumulation is mediated by continuous recruitment of monocytes, reduced emigration of macrophages and poor phagocytosis of dead cells which may trigger secondary necrosis and amplification of plaque inflammation. Moreover, an increasing body of evidence indicates that macrophages have developed several strategies to survive and to proliferate in the adverse environment of an advanced atherosclerotic plaque. Macrophages contain organic molecules or enzymes that provide enhanced antioxidant protection. In addition, synthesis of anti-apoptotic proteins is upregulated and several cellular protection mechanisms such as the unfolded protein response and autophagy are activated in macrophages to promote cellular survival. In this review, we discuss these macrophage survival mechanisms that allow growth and destabilization of advanced atherosclerotic plaques.
    MeSH term(s) Animals ; Antioxidants/metabolism ; Apoptosis Regulatory Proteins/metabolism ; Atherosclerosis/immunology ; Atherosclerosis/metabolism ; Autophagy ; Cell Survival ; Humans ; Lipoproteins, LDL/metabolism ; Macrophages/physiology ; Unfolded Protein Response
    Chemical Substances Antioxidants ; Apoptosis Regulatory Proteins ; Lipoproteins, LDL
    Language English
    Publishing date 2012-11
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 189755-x
    ISSN 1435-1803 ; 0300-8428 ; 0175-9418
    ISSN (online) 1435-1803
    ISSN 0300-8428 ; 0175-9418
    DOI 10.1007/s00395-012-0297-x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Defective autophagy in vascular smooth muscle cells accelerates senescence and promotes neointima formation and atherogenesis.

    Grootaert, Mandy Oj / da Costa Martins, Paula A / Bitsch, Nicole / Pintelon, Isabel / De Meyer, Guido Ry / Martinet, Wim / Schrijvers, Dorien M

    Autophagy

    2015  Volume 11, Issue 11, Page(s) 2014–2032

    Abstract: Autophagy is triggered in vascular smooth muscle cells (VSMCs) of diseased arterial vessels. However, the role of VSMC autophagy in cardiovascular disease is poorly understood. Therefore, we investigated the effect of defective autophagy on VSMC survival ...

    Abstract Autophagy is triggered in vascular smooth muscle cells (VSMCs) of diseased arterial vessels. However, the role of VSMC autophagy in cardiovascular disease is poorly understood. Therefore, we investigated the effect of defective autophagy on VSMC survival and phenotype and its significance in the development of postinjury neointima formation and atherosclerosis. Tissue-specific deletion of the essential autophagy gene Atg7 in murine VSMCs (atg7
    Language English
    Publishing date 2015-09-22
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2454135-7
    ISSN 1554-8635 ; 1554-8627
    ISSN (online) 1554-8635
    ISSN 1554-8627
    DOI 10.1080/15548627.2015.1096485
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Pharmacological modulation of cell death in atherosclerosis: a promising approach towards plaque stabilization?

    Martinet, Wim / Schrijvers, Dorien M / De Meyer, Guido R Y

    British journal of pharmacology

    2011  Volume 164, Issue 1, Page(s) 1–13

    Abstract: Despite tremendous advances over the last 15 years in identifying vulnerable atherosclerotic plaques, the incidence of death and disability caused by such lesions still remains the number one health threat in developed countries. Therefore, new systemic ... ...

    Abstract Despite tremendous advances over the last 15 years in identifying vulnerable atherosclerotic plaques, the incidence of death and disability caused by such lesions still remains the number one health threat in developed countries. Therefore, new systemic or focal therapies aimed at decreasing the overall burden of disease, and a change to a more benign phenotype, are needed. Because cell death is a prominent feature of advanced atherosclerotic plaques with a major impact on plaque destabilization, an increasing number of compounds targeting the apoptotic or autophagic machinery in atherosclerosis are being explored, predominantly at the preclinical level. This review will provide an overview of these compounds, with a focus on both inhibition and stimulation of cell death, to prevent acute coronary syndromes and sudden cardiac death.
    MeSH term(s) Animals ; Atherosclerosis/drug therapy ; Atherosclerosis/pathology ; Cell Death/drug effects ; Death, Sudden, Cardiac/prevention & control ; Humans ; Plaque, Atherosclerotic/drug therapy ; Plaque, Atherosclerotic/pathology
    Language English
    Publishing date 2011-03-21
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 80081-8
    ISSN 1476-5381 ; 0007-1188
    ISSN (online) 1476-5381
    ISSN 0007-1188
    DOI 10.1111/j.1476-5381.2011.01342.x
    Database MEDical Literature Analysis and Retrieval System OnLINE

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