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1.
J Hypertens ; 42(4): 685-693, 2024 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-38406874

RESUMO

BACKGROUND: Endothelial nitric oxide synthase (NOS3) elicits atheroprotection by preventing extracellular matrix (ECM) proteolytic degradation through inhibition of extracellular matrix metalloproteinase inducer (EMMPRIN) and collagenase MMP-13 by still unknown mechanisms. METHODS: C57BL/6 mice lacking ApoE , NOS3, and/or MMP13 were fed with a high-fat diet for 6 weeks. Entire aortas were extracted and frozen to analyze protein and nucleic acid expression. Atherosclerotic plaques were detected by ultrasound imaging, Oil Red O (ORO) staining, and Western Blot. RNA-seq and RT-qPCR were performed to evaluate EMMPRIN, MMP-9, and EMMPRIN-targeting miRNAs. Mouse aortic endothelial cells (MAEC) were incubated to assess the role of active MMP-13 over MMP-9. One-way ANOVA or Kruskal-Wallis tests were performed to determine statistical differences. RESULTS: Lack of NOS3 in ApoE null mice fed with a high-fat diet increased severe plaque accumulation, vessel wall widening, and high mortality, along with EMMPRIN-induced expression by upregulation of miRNAs 46a-5p and 486-5p. However, knocking out MMP-13 in ApoE/NOS3 -deficient mice was sufficient to prevent mortality (66.6 vs. 26.6%), plaque progression (23.1 vs. 8.8%), and MMP-9 expression, as confirmed in murine aortic endothelial cell (MAEC) cultures, in which MMP-9 was upregulated by incubation with active recombinant MMP-13, suggesting MMP-9 as a new target of MMP-13 in atherosclerosis. CONCLUSION: We describe a novel mechanism by which the absence of NOS3 may worsen atherosclerosis through EMMPRIN-induced ECM proteolytic degradation by targeting the expression of miRNAs 146a-5p and 485-5p. Focusing on NOS3 regulation of ECM degradation could be a promising approach in the management of atherosclerosis.


Assuntos
Aterosclerose , MicroRNAs , Animais , Camundongos , Metaloproteinase 13 da Matriz/metabolismo , Basigina/metabolismo , Metaloproteinase 9 da Matriz/metabolismo , Células Endoteliais/metabolismo , Camundongos Endogâmicos C57BL , Matriz Extracelular/metabolismo , MicroRNAs/metabolismo , Apolipoproteínas E/genética
2.
World J Diabetes ; 14(8): 1301-1313, 2023 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-37664470

RESUMO

BACKGROUND: Diabetes mellitus (DM) is one of the largest global health emergencies of the 21st century. In recent years, its connection with environmental pollutants, such as bisphenol A (BPA), has been demonstrated; consequently, new structurally similar molecules are used to replace BPA in the plastics industry (BPS, BPF and BPAF). AIM: To carry out a systematic review to allow coherent evaluation of the state of the art. Subsequently, a meta-analysis was performed to unify the existing quantitative data. METHODS: Firstly, a systematic review was carried out, using the terms "(bisphenol) AND (Diabetes OR Hyperglycemia)", to maximize the number of results. Subsequently, three authors analyzed the set of articles. Finally, a meta-analysis was performed for each BP, using RevMan software. In addition, funnel plots were developed to study publication bias. RESULTS: The systematic analysis of the literature revealed 13 recent articles (2017-2023) related to the study paradigm. The qualitative analysis showed interesting data linking diabetes to the three most widely used substitute BPs in the industry: BPS, BPF and BPAF. Finally, the meta-analysis determined a positive relationship with BPS, BPF and BPAF, which was only statistically significant with BPS. CONCLUSION: There is a need to apply the precautionary principle, regulating the use of new BPs. Therefore, replacing BPA with BPS, BPF or BPAF is unlikely to protect the population from potential health risks, such as DM.

3.
Pharmaceutics ; 14(10)2022 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-36297479

RESUMO

(1) Background: Early response after acute myocardial infarction (AMI) prevents extensive cardiac necrosis, in which inflammation resolution, including expression of anti-inflammatory interleukin-10 (IL-10), may play a key role. (2) Methods: We synthesized NIL10, a micelle-based nanoparticle, to target IL-10 receptor in mice and pigs subjected to AMI. (3) Results: Administration of NIL10 induced cardiac protection of wild-type and IL-10 knockout mice and pigs subjected to AMI. Cardiac protection was not induced in IL-10-receptor null mice, as shown by a significant recovery of cardiac function, in which inflammatory foci and fibrosis were strongly reduced, together with the finding that resolving M2-like macrophage populations were increased after day 3 of reperfusion. In addition, anti-inflammatory cytokines, including IL-4, IL-7, IL-10, IL-13, IL-16, and IL-27 were also elevated. Mechanistically, NIL10 induced activation of the IL-10 receptor/STAT-3 signaling pathway, and STAT3-dependent inhibition of nuclear translocation of pro-inflammatory NF-ĸB transcription factor. (4) Conclusions: Taken together, we propose using NIL10 as a novel therapeutic tool against AMI-induced cardiac damage.

4.
Circ Cardiovasc Imaging ; 15(6): e013379, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-35678191

RESUMO

BACKGROUND: Rapid screening and accurate diagnosis of acute myocardial infarction are critical to reduce the progression of myocardial necrosis, in which proteolytic degradation of myocardial extracellular matrix plays a major role. In previous studies, we found that targeting the extracellular matrix metalloprotease inducer (EMMPRIN) by injecting nanoparticles conjugated with the specific EMMPRIN-binding peptide AP9 significantly improved cardiac function in mice subjected to ischemia/reperfusion. METHODS: In a porcine model of coronary ischemia/reperfusion, we tested the theragnostic effects of administering 0.1 mg/kg gadolinium-containing nanoparticles conjugated with AP9 (NAP9), a synthetic peptide that targets EMMPRIN or a control nanoparticle (NAPSC). Cardiac magnetic resonance assessment of the infarct progression, ventricular function, and nanoparticle distribution was performed the next 7 days. We also measured the infarcted area of the heart and cardiac remodeling at 7 or 21 days after ischemia/reperfusion. RESULTS: After 21 days of ischemia/reperfusion, NAP9 reduced the extension of cardiac necrosis (14.1±9.7 versus 35.5±1.8) and the levels of collagenolytic activity of MMPs (matrix metalloproteases), along with a significant reduction in collagen deposition (7.5±4.5 versus 41.3±20); including the ratio of type I versus III collagen fibers in the necrotic myocardium. In terms of cardiac function, the response to NAP9 administration resulted in a significant improvement of cardiac performance overtime, as evidenced by the left ventricle ejection fraction (64.0±7.8), when compared with those present in the NAPSC group (47.3±4.7). As shown by magnetic resonance imaging, noninvasive molecular imaging of NAP9 enabled us to find a significant reduction in cardiac necrosis, myocardial edema, hemorrhage, and microvascular obstruction, suggesting that NAP9 may reduce myocardial injury and preserve left ventricular function, at least, by preventing the effect of EMMPRIN on extracellular matrix degradation. CONCLUSIONS: Our data point towards NAP9 as a promising theragnostic tool in managing acute myocardial infarction, by inhibiting EMMPRIN-induced extracellular matrix degradation and allowing noninvasive visualization of cardiac necrosis progression over time.


Assuntos
Doença da Artéria Coronariana , Infarto do Miocárdio , Nanopartículas , Animais , Basigina/metabolismo , Colágeno , Doença da Artéria Coronariana/patologia , Matriz Extracelular/patologia , Humanos , Metaloproteinases da Matriz/metabolismo , Camundongos , Infarto do Miocárdio/diagnóstico por imagem , Infarto do Miocárdio/tratamento farmacológico , Infarto do Miocárdio/metabolismo , Miocárdio/patologia , Nanopartículas/química , Medicina de Precisão , Reperfusão , Suínos
5.
Biomolecules ; 11(10)2021 09 29.
Artigo em Inglês | MEDLINE | ID: mdl-34680063

RESUMO

Bisphenol A (BPA) is a widespread endocrine disruptor affecting many organs and systems. Previous work in our laboratory demonstrated that BPA could induce death due to necroptosis in murine aortic endothelial cells (MAECs). This work aims to evaluate the possible involvement of BPA-induced senescence mechanisms in endothelial cells. The ß-Gal assays showed interesting differences in cell senescence at relatively low doses (100 nM and 5 µM). Western blots confirmed that proteins involved in senescence mechanisms, p16 and p21, were overexpressed in the presence of BPA. In addition, the UPR (unfolding protein response) system, which is part of the senescent phenotype, was also explored by Western blot and qPCR, confirming the involvement of the PERK-ATF4-CHOP pathway (related to pathological processes). The endothelium of mice treated with BPA showed an evident increase in the expression of the proteins p16, p21, and CHOP, confirming the results observed in cells. Our results demonstrate that oxidative stress induced by BPA leads to UPR activation and senescence since pretreatment with N-acetylcysteine (NAC) in BPA-treated cells reduced the percentage of senescent cells prevented the overexpression of proteins related to BPA-induced senescence and reduced the activation of the UPR system. The results suggest that BPA participates actively in accelerated cell aging mechanisms, affecting the vascular endothelium and promoting cardiovascular diseases.


Assuntos
Fator 4 Ativador da Transcrição/genética , Senescência Celular/efeitos dos fármacos , Inibidor p16 de Quinase Dependente de Ciclina/genética , eIF-2 Quinase/genética , Acetilcisteína/metabolismo , Envelhecimento/efeitos dos fármacos , Envelhecimento/genética , Animais , Aorta/efeitos dos fármacos , Apoptose/efeitos dos fármacos , Compostos Benzidrílicos/farmacologia , Endotélio/efeitos dos fármacos , Endotélio/patologia , Camundongos , Necroptose/efeitos dos fármacos , Necroptose/genética , Estresse Oxidativo/efeitos dos fármacos , Fenóis/farmacologia , Fator de Transcrição CHOP/genética
6.
Int J Mol Sci ; 22(6)2021 Mar 12.
Artigo em Inglês | MEDLINE | ID: mdl-33809359

RESUMO

In response to cardiac ischemia/reperfusion, proteolysis mediated by extracellular matrix metalloproteinase inducer (EMMPRIN) and its secreted ligand cyclophilin-A (CyPA) significantly contributes to cardiac injury and necrosis. Here, we aimed to investigate if, in addition to the effect on the funny current (I(f)), Ivabradine may also play a role against cardiac necrosis by reducing EMMPRIN/CyPA-mediated cardiac inflammation. In a porcine model of cardiac ischemia/reperfusion (IR), we found that administration of 0.3 mg/kg Ivabradine significantly improved cardiac function and reduced cardiac necrosis by day 7 after IR, detecting a significant increase in cardiac CyPA in the necrotic compared to the risk areas, which was inversely correlated with the levels of circulating CyPA detected in plasma samples from the same subjects. In testing whether Ivabradine may regulate the levels of CyPA, no changes in tissue CyPA were found in healthy pigs treated with 0.3 mg/kg Ivabradine, but interestingly, when analyzing the complex EMMPRIN/CyPA, rather high glycosylated EMMPRIN, which is required for EMMPRIN-mediated matrix metalloproteinase (MMP) activation and increased CyPA bonding to low-glycosylated forms of EMMPRIN were detected by day 7 after IR in pigs treated with Ivabradine. To study the mechanism by which Ivabradine may prevent secretion of CyPA, we first found that Ivabradine was time-dependent in inhibiting co-localization of CyPA with the granule exocytosis marker vesicle-associated membrane protein 1 (VAMP1). However, Ivabradine had no effect on mRNA expression nor in the proteasome and lysosome degradation of CyPA. In conclusion, our results point toward CyPA, its ligand EMMPRIN, and the complex CyPA/EMMPRIN as important targets of Ivabradine in cardiac protection against IR.


Assuntos
Basigina/genética , Ciclofilina A/genética , Infarto do Miocárdio/tratamento farmacológico , Proteína 1 Associada à Membrana da Vesícula/genética , Animais , Biomarcadores/metabolismo , Cardiotônicos/farmacologia , Modelos Animais de Doenças , Regulação da Expressão Gênica , Coração/efeitos dos fármacos , Coração/fisiopatologia , Humanos , Ivabradina/farmacologia , Infarto do Miocárdio/genética , Infarto do Miocárdio/patologia , Suínos
9.
Rev Esp Cardiol (Engl Ed) ; 74(12): 1062-1071, 2021 Dec.
Artigo em Inglês, Espanhol | MEDLINE | ID: mdl-33132099

RESUMO

INTRODUCTION AND OBJECTIVES: Ivabradine reduces heart rate by blocking the I(f) current and preserves blood pressure and stroke volume through unknown mechanisms. Caveolin-3 protects the heart by forming protein complexes with several proteins, including extracellular matrix (ECM)-metalloproteinase-inducer (EMMPRIN) and hyperpolarization-activated cyclic nucleotide-gated channel 4 (HN4), a target of ivabradine. We hypothesized that ivabradine might also exert cardioprotective effects through inhibition of ECM degradation. METHODS: In a porcine model of cardiogenic shock, we studied the effects of ivabradine on heart integrity, the levels of MMP-9 and EMMPRIN, and the stability of caveolin-3/HCN4 protein complexes with EMMPRIN. RESULTS: Administration of 0.3 mg/kg ivabradine significantly reduced cardiogenic shock-induced ventricular necrosis and expression of MMP-9 without affecting EMMPRIN mRNA, protein, or protein glycosylation (required for MMP activation). However, ivabradine increased the levels of the caveolin-3/LG-EMMPRIN (low-glycosylated EMMPRIN) and caveolin-3/HCN4 protein complexes and decreased that of a new complex between HCN4 and high-glycosylated EMMPRIN formed in response to cardiogenic shock. We next tested whether caveolin-3 can bind to HCN4 and EMMPRIN and found that the HCN4/EMMPRIN complex was preserved when we silenced caveolin-3 expression, indicating a direct interaction between these 2 proteins. Similarly, EMMPRIN-silenced cells showed a significant reduction in the binding of caveolin-3/HCN4, which regulates the I(f) current, suggesting that, rather than a direct interaction, both proteins bind to EMMPRIN. CONCLUSIONS: In addition to inhibition of the I(f) current, ivabradine may induce cardiac protection by inhibiting ECM degradation through preservation of the caveolin-3/LG-EMMPRIN complex and control heart rate by stabilizing the caveolin-3/HCN4 complex.


Assuntos
Cardiotônicos/farmacologia , Matriz Extracelular , Coração , Ivabradina/farmacologia , Choque Cardiogênico , Animais , Coração/efeitos dos fármacos , Frequência Cardíaca , Choque Cardiogênico/prevenção & controle , Suínos
10.
Int J Mol Sci ; 21(18)2020 Sep 08.
Artigo em Inglês | MEDLINE | ID: mdl-32911752

RESUMO

Ivabradine can reduce heart rate through inhibition of the current I(f) by still unexplored mechanisms. In a porcine model of ischemia reperfusion (IR), we found that treatment with 0.3 mg/kg Ivabradine increased plasma release of microvesicles (MVs) over Placebo, as detected by flow cytometry of plasma isolated from pigs 7 days after IR, in which a tenfold increase of Extracellular Matrix Metalloproteinase Inducer (EMMPRIN) containing (both high and low-glycosylated) MVs, was detected in response to Ivabradine. The source of MVs was investigated, finding a 37% decrease of CD31+ endothelial cell derived MVs, while CD41+ platelet MVs remained unchanged. By contrast, Ivabradine induced the release of HCN4+ (mostly cardiac) MVs. While no differences respect to EMMPRIN as a cargo component were found in endothelial and platelet derived MVs, Ivabradine induced a significant release of EMMPRIN+/HCN4+ MVs by day 7 after IR. To test the role of EMMPRIN+ cardiac MVs (EMCMV), H9c2 cell monolayers were incubated for 24 h with 107 EMCMVs, reducing apoptosis, and increasing 2 times cell proliferation and 1.5 times cell migration. The in vivo contribution of Ivabradine-induced plasma MVs was also tested, in which 108 MVs isolated from the plasma of pigs treated with Ivabradine or Placebo 7 days after IR, were injected in pigs under IR, finding a significant cardiac protection by increasing left ventricle ejection fraction and a significant reduction of the necrotic area. In conclusion ivabradine induces cardiac protection by increasing at least the release of EMMPRIN containing cardiac microvesicles.


Assuntos
Ivabradina/uso terapêutico , Microvasos/efeitos dos fármacos , Infarto do Miocárdio/tratamento farmacológico , Doença Aguda , Animais , Apoptose , Basigina/efeitos dos fármacos , Basigina/metabolismo , Linhagem Celular , Micropartículas Derivadas de Células , Modelos Animais de Doenças , Feminino , Citometria de Fluxo/métodos , Coração/fisiopatologia , Frequência Cardíaca , Ivabradina/metabolismo , Microvasos/metabolismo , Infarto do Miocárdio/prevenção & controle , Traumatismo por Reperfusão Miocárdica/fisiopatologia , Plasma , Suínos
11.
Biomolecules ; 10(8)2020 08 09.
Artigo em Inglês | MEDLINE | ID: mdl-32784904

RESUMO

Toll-like receptor 4 (TLR4) contributes to the pathogenesis of coronary ischemia/reperfusion (IR). To test whether the new TLR4 antagonist, ApTOLL, may prevent coronary IR damage, we administered 0.078 mg/kg ApTOLL or Placebo in pigs subjected to IR, analyzing the levels of cardiac troponins, matrix metalloproteinases, pro-, and anti-inflammatory cytokines, heart function, and tissue integrity over a period of 7 days after IR. Our results show that ApTOLL reduced cardiac troponin-1 24 h after administration, improving heart function, as detected by a significant recovery of the left ventricle ejection fraction (LVEF) and the shortening fraction (FS) cardiac parameters. The extension of necrotic and fibrotic areas was also reduced, as detected by Evans blue/2,3,5-triphenyltetrazolium chloride (TTC) staining, Hematoxylin/Eosine, and Masson Trichrome staining of heart sections, together with a significant reduction in the expression of the extracellular matrix-degrading, matrix metalloproteinase 9. Finally, the expression of the following cytokines, CCL1, CCL2, MIP1-A-B, CCL5, CD40L, C5/C5A, CXCL1, CXCL10, CXCL11, CXCL12, G-CSF, GM-CSF, ICAM-1, INF-g, IL1-a, ILI-b, IL-1Ra, IL2, IL4, IL5, IL6, IL8, IL10, IL12, IL13, IL16, IL17-A, IL17- E, IL18, IL21, IL27, IL32, MIF, SERPIN-E1, TNF-a, and TREM-1, were also assayed, detecting a pronounced decrease of pro-inflammatory cytokines after 7 days of treatment with ApTOLL. Altogether, our results show that ApTOLL is a promising new tool for the treatment of acute myocardial infarction (AMI).


Assuntos
Aptâmeros de Nucleotídeos/uso terapêutico , Infarto do Miocárdio/tratamento farmacológico , Traumatismo por Reperfusão Miocárdica/tratamento farmacológico , Receptor 4 Toll-Like/antagonistas & inibidores , Animais , Citocinas/sangue , Modelos Animais de Doenças , Feminino , Coração/fisiopatologia , Infarto do Miocárdio/diagnóstico por imagem , Infarto do Miocárdio/metabolismo , Infarto do Miocárdio/patologia , Traumatismo por Reperfusão Miocárdica/diagnóstico por imagem , Traumatismo por Reperfusão Miocárdica/metabolismo , Traumatismo por Reperfusão Miocárdica/patologia , Suínos , Receptor 4 Toll-Like/metabolismo
12.
Cardiol J ; 27(1): 62-71, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-30155868

RESUMO

BACKGROUND: Acute heart failure patients could benefit from heart rate reduction, as myocardial consumption and oxidative stress are related to tachycardia. Ivabradine could have a clinical role attenuating catecholamine-induced tachycardia. The aim of this study was to evaluate hemodynamic effects of ivabradine in a swine model of acute heart failure. METHODS: Myocardial infarction was induced by 45 min left anterior descending artery balloon occlusion in 18 anesthetized pigs. An infusion of dobutamine and noradrenaline was maintained aiming to preserve adequate hemodynamic support, accompanied by fluid administration to obtain a pulmonary wedged pressure ≥ 18 mmHg. After reperfusion, rhythm and hemodynamic stabilization, the animals were randomized to 0.3 mg/kg ivabradine intravenously (n = 9) or placebo (n = 9). Hemodynamic parameters were observed over a 60 min period. RESULTS: Ivabradine was associated with a significant reduction in heart rate (88.4 ± 12.0 bpm vs. 122.7 ± 17.3 bpm after 15 min of ivabradine/placebo infusion, p < 0.01) and an increase in stroke volume (68.8 ± 13.7 mL vs. 52.4 ± 11.5 mL after 15 min, p = 0.01). There were no significant differences in systemic or pulmonary arterial pressure, or significant changes in pulmonary capillary pressure. However, after 15 min, cardiac output was significantly reduced with ivabradine (-5.2% vs. +15.0% variation in ivabradine/placebo group, p = 0.03), and central venous pressure increased (+4.2% vs. -19.7% variation, p < 0.01). CONCLUSIONS: Ivabradine reduces heart rate and increases stroke volume without modifying systemic or left filling pressures in a swine model of acute heart failure. However, an excessive heart rate reduction could lead to a decrease in cardiac output and an increase in right filling pressures. Future studies with specific heart rate targets are needed.


Assuntos
Pressão Arterial , Débito Cardíaco , Fármacos Cardiovasculares , Insuficiência Cardíaca , Frequência Cardíaca , Ivabradina , Animais , Feminino , Doença Aguda , Pressão Arterial/efeitos dos fármacos , Débito Cardíaco/efeitos dos fármacos , Fármacos Cardiovasculares/farmacologia , Modelos Animais de Doenças , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/etiologia , Insuficiência Cardíaca/fisiopatologia , Frequência Cardíaca/efeitos dos fármacos , Ivabradina/farmacologia , Infarto do Miocárdio/complicações , Sus scrofa , Fatores de Tempo
13.
Biosci Rep ; 39(3)2019 03 29.
Artigo em Inglês | MEDLINE | ID: mdl-30792263

RESUMO

A new familial dilated cardiomyopathy (FDCM) was found related to mutations in BAG3 gene. MicroRNAs (miRNAs) represent new targets of FDCM, although no studies have assessed clinical association between Bcl2-associated athanogene 3 (BAG3)-related DCM and miRNAs. Here, we studied whether a clinical association between BAG3-related FDCM and circulating miRNAs may have diagnostic and prognostic value in a small cohort of familial related individuals carrying a BAG3 mutation (BAG3+) and/or diagnosed of dilated cardiomyopathy (DCM) (DCM+). The analysis of 1759 circulating miRNAs showed significant differences between BAG3+ and BAG3- individuals for miRNAs mir-3191-3p, 6769b-3p, 1249-ep, 154-5p, 6855-5p, and 182-5p, while comparisons between BAG3+/DCM+ versus BAG3+/DCM- were restricted to miRNAs mir-154-5p, 6885-5p, and 182-5p, showing significant correlation with systolic and diastolic blood pressure, A wave, left atrium length, and left atrium area. Additionally, when stratified by gender and age, miRNAs were statistically correlated with critical parameters, including left ventricle ejection fraction (LVEF) and ventricular diameter, in women and young men. Likewise, 56% of BAG3+/DCM+, significantly co-expressed mir-154-5p and mir-182-5p, and a slight 4% did not express such combination, suggesting that co-expression of mir-154-5p and mir-182-5p may potentially show diagnostic value. Further studies will require long-term follow-up, and validation in larger populations.


Assuntos
Proteínas Adaptadoras de Transdução de Sinal/genética , Proteínas Reguladoras de Apoptose/genética , Cardiomiopatia Dilatada/genética , MicroRNA Circulante/genética , Perfilação da Expressão Gênica/métodos , MicroRNAs/genética , Adolescente , Adulto , Cardiomiopatia Dilatada/diagnóstico , Cardiomiopatia Dilatada/fisiopatologia , Criança , Feminino , Humanos , Masculino , MicroRNAs/sangue , Pessoa de Meia-Idade , Mutação , Prognóstico , Adulto Jovem
14.
Curr Vasc Pharmacol ; 17(5): 447-454, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-30124156

RESUMO

Endothelial senescence-associated with aging or induced prematurely in pathological situations, such as diabetes, is a first step in the development of Cardiovascular Disease (CVDs) and particularly inflammatory cardiovascular diseases. The main mechanism that links endothelial senescence and the progression of CVDs is the production of altered Extracellular Vesicles (EVs) by senescent endothelial cells among them, Microvesicles (MVs). MVs are recognized as intercellular signaling elements that play a key role in regulating tissue homeostasis. However, MVs produced by damage cell conveyed epigenetic signals, mainly involving microRNAs, which induce many of the injured responses in other vascular cells leading to the development of CVDs. Many studies strongly support that the quantification and characterization of the MVs released by senescent endothelial cells may be useful diagnostic tools in patients with CVDs, as well as a future therapeutic target for these diseases. In this review, we summarize the current knowledge linking senescence-associated MVs to the development of CVDs and discuss the roles of these MVs, in particular, in diabetic-associated increases the risk of CVDs.


Assuntos
Proliferação de Células , Senescência Celular , Diabetes Mellitus/metabolismo , Angiopatias Diabéticas/metabolismo , Células Endoteliais/metabolismo , Endotélio Vascular/metabolismo , Vesículas Extracelulares/metabolismo , Animais , Diabetes Mellitus/genética , Diabetes Mellitus/patologia , Diabetes Mellitus/fisiopatologia , Angiopatias Diabéticas/genética , Angiopatias Diabéticas/patologia , Angiopatias Diabéticas/fisiopatologia , Células Endoteliais/patologia , Endotélio Vascular/patologia , Endotélio Vascular/fisiopatologia , Epigênese Genética , Vesículas Extracelulares/patologia , Humanos , Transdução de Sinais
15.
Int J Mol Sci ; 19(10)2018 Oct 19.
Artigo em Inglês | MEDLINE | ID: mdl-30347750

RESUMO

Lack of endothelial nitric oxide causes endothelial dysfunction and circulating monocyte infiltration, contributing to systemic atheroma plaque formation in arterial territories. Among the different inflammatory products, macrophage-derived foam cells and smooth muscle cells synthesize matrix metalloproteinases (MMPs), playing a pivotal role in early plaque formation and enlargement. We found increased levels of MMP-9 and MMP-13 in human endarterectomies with advanced atherosclerosis, together with significant amounts of extracellular matrix (ECM) metalloproteinase inducer EMMPRIN. To test whether the absence of NO may aggravate atherosclerosis through EMMPRIN activation, double NOS3/apoE knockout (KO) mice expressed high levels of EMMPRIN in carotid plaques, suggesting that targeting extracellular matrix degradation may represent a new mechanism by which endothelial NO prevents atherosclerosis. Based on our previous experience, by using gadolinium-enriched paramagnetic fluorescence micellar nanoparticles conjugated with AP9 (NAP9), an EMMPRIN-specific binding peptide, magnetic resonance sequences allowed non-invasive visualization of carotid EMMPRIN in NOS3/apoE over apoE control mice, in which atheroma plaques were significantly reduced. Taken together, these results point to EMMPRIN as a new therapeutic target of NO-mediated protection against atherosclerosis, and NAP9 as a non-invasive molecular tool to target atherosclerosis.


Assuntos
Aterosclerose/metabolismo , Basigina/metabolismo , Óxido Nítrico/metabolismo , Idoso , Idoso de 80 Anos ou mais , Animais , Aterosclerose/tratamento farmacológico , Artérias Carótidas/metabolismo , Artérias Carótidas/patologia , Endotélio Vascular/efeitos dos fármacos , Endotélio Vascular/metabolismo , Feminino , Humanos , Masculino , Metaloproteinases da Matriz/metabolismo , Camundongos , Nanopartículas/química , Óxido Nítrico Sintase Tipo III/metabolismo , Fragmentos de Peptídeos/farmacologia , Fragmentos de Peptídeos/uso terapêutico , Ligação Proteica
16.
Int J Mol Sci ; 19(7)2018 Jul 09.
Artigo em Inglês | MEDLINE | ID: mdl-29987251

RESUMO

Atherosclerosis, a chronic inflammatory disease that causes the most heart attacks and strokes in humans, is the leading cause of death in the developing world; its principal clinical manifestation is coronary artery disease. The development of atherosclerosis is attributed to the aging process itself (biological aging) and is also associated with the development of chronic diseases (premature aging). Both aging processes produce an increase in risk factors such as oxidative stress, endothelial dysfunction and proinflammatory cytokines (oxi-inflamm-aging) that might generate endothelial senescence associated with damage in the vascular system. Cellular senescence increases microvesicle release as carriers of molecular information, which contributes to the development and calcification of atherosclerotic plaque, as a final step in advanced atherosclerotic plaque formation. Consequently, this review aims to summarize the information gleaned to date from studies investigating how the senescent extracellular vesicles, by delivering biological signalling, contribute to atherosclerotic calcification.


Assuntos
Micropartículas Derivadas de Células/genética , Placa Aterosclerótica/genética , Calcificação Vascular/genética , Envelhecimento/genética , Envelhecimento/metabolismo , Animais , Micropartículas Derivadas de Células/metabolismo , Senescência Celular , Predisposição Genética para Doença , Humanos , Placa Aterosclerótica/metabolismo , Fatores de Risco , Calcificação Vascular/metabolismo
17.
Int J Mol Sci ; 19(5)2018 May 17.
Artigo em Inglês | MEDLINE | ID: mdl-29772765

RESUMO

Carbamylation is a post-translational modification of proteins that may partake in the oxidative stress-associated cell damage, and its increment has been recently proposed as a "hallmark of aging". The molecular mechanisms associated with aging are related to an increased release of free radicals. We have studied whether carbamylated proteins from the peripheral blood of healthy subjects are related to oxidative damage and aging, taking into account the gender and the immune profile of the subjects. The study was performed in healthy human volunteers. The detection of protein carbamylation and malondialdehyde (MDA) levels was evaluated using commercial kits. The immune profile was calculated using parameters of immune cell function. The results show that the individuals from the elderly group (60⁻79 years old) have increased carbamylated protein and MDA levels. When considered by gender, only men between 60 and 79 years old showed significantly increased carbamylated proteins and MDA levels. When those subjects were classified by their immune profile, the carbamylated protein levels were higher in those with an older immune profile. In conclusion, the carbamylation of proteins in peripheral blood is related to age-associated oxidative damage and to an aging functional immunological signature. Our results suggest that carbamylated proteins may play an important role at the cellular level in the aging process.


Assuntos
Envelhecimento/metabolismo , Oxirredução , Proteínas/metabolismo , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Envelhecimento/sangue , Biomarcadores , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Processamento de Proteína Pós-Traducional , Espécies Reativas de Oxigênio/metabolismo , Fatores Sexuais , Adulto Jovem
18.
An Real Acad Farm ; 84(1): 4-15, ene.-mar. 2018. graf, tab
Artigo em Espanhol | IBECS | ID: ibc-178046

RESUMO

En la década de los 90 se descubrió un nuevo sistema de comunicación célula-célula a través de vesículas con moléculas bioactivas liberadas al espacio extracelular. Estas vesículas, conocidas como vesículas extracelulares (VE), actúan como reguladores de procesos fisiológicos, pero también participan en el desarrollo y progresión de múltiples patologías. Las microvesículas (MVs) son un tipo de VE que se producen como resultado del daño celular, y están implicadas en la etiopatogenia de un gran número de enfermedades cardiovasculares porque intervienen en el inicio de la aterosclerosis. Diferentes fármacos cardioprotectores han demostrado tener un efecto sobre las MVs; por otro lado, desde que se conoce su capacidad para transferir información biológica, el uso de las éstas como vehículos de suministro molecular ha adquirido interés científico. El objetivo de este trabajo es analizar la implicación de las MVs en la etiopatogenia de la aterosclerosis estableciendo su importancia como biomarcadores de diagnóstico y de seguimiento. Se revisará el efecto farmacológico de las terapias actuales sobre las MVs y se discutirá su papel como herramienta terapéutica


In the 1990's, it was discovered a new cell-cell communication system based on the action of vesicles that cargo bioactive molecules, on neighboring cells. These vesicles, known as extracellular vesicles (EVs) act as regulators of several physiological processes but also participate in the development and progression of multiple diseases. Microvesicles (MVs) are types of EVs that are implicated in the etiopathogenesis of a large number of cardiovascular diseases due to they take part in the onset of atherosclerosis. Different cardioprotective drugs have shown to have an effect on MVs. In addition, since the discovery that MVs are capable of transferring biological information, the use of them as drug delivery vehicles has gained scientific interest. The aim of this work is to analyze the involvement of MVs in the origin of atherosclerosis to demonstrate their role as diagnostic biomarkers, as well as to review the pharmacological effect of current therapies on MVs and their role as therapeutic tool


Assuntos
Humanos , Sistemas de Liberação de Medicamentos , Vesículas Extracelulares , Inibidores da Agregação Plaquetária/farmacologia , Doenças Cardiovasculares/diagnóstico , Doenças Cardiovasculares/tratamento farmacológico , Biomarcadores Farmacológicos , Vesículas Extracelulares/classificação
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