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2.
BMC Proc ; 17(Suppl 8): 20, 2023 Aug 17.
Artigo em Inglês | MEDLINE | ID: mdl-37587509

RESUMO

Although the cardiovascular (CV) polypill concept is not new and several guidelines state that a CV polypill should be considered an integral part of a comprehensive CV disease (CVD) prevention strategy, there are still some barriers to its implementation in the real-world setting, mainly in secondary CV prevention. As the CNIC-polypill is the only one approved for secondary CV prevention in patients with atherosclerotic CVD in 27 countries worldwide, a panel of four discussants and 30 participants from 18 countries conveyed in a virtual meeting on April 21, 2022, to discuss key clinical questions regarding the practical use of the CNIC-Polypill and barriers to its implementation.Data presented showed that, although the use of the CV polypill is not explicitly mentioned in the current 2021 European Society of Cardiology guidelines on CVD prevention, it may be used in any patient for secondary CVD prevention tolerating all their components to improve outcomes through different aspects. The favourable results of the Secondary Prevention of Cardiovascular Disease in the Elderly (SECURE) trial now reinforce this recommendation. The panellists presented algorithms on how to switch from any baseline regimen when starting treatment with the CNIC-polypill in different situations, including patients with hypertension, dyslipidaemia, and a previous CV event; at discharge after a cardiovascular event; in chronic ischemic conditions; and in cases of polypharmacy. The panellists and expert discussants did agree that available studies conducted so far with the CNIC-polypill demonstrate that it is as efficacious as the monocomponents, equipotent drugs, or other therapies; reduces the risk of experiencing recurrent major CV events; improves medication adherence; reduces health care costs and resources compared to patients treated with loose drugs; and the patients prefer it over the multipill strategy.In conclusion, the data presented by the participants provided the evidence behind the use of the CNIC-polypill to help fulfil the goal of encouraging its adoption by physicians.

3.
Sci Rep ; 13(1): 12240, 2023 07 28.
Artigo em Inglês | MEDLINE | ID: mdl-37507448

RESUMO

Rejuvenation of an old organism was achieved in heterochronic parabiosis experiments, implicating different soluble factors in this effect. Extracellular vesicles (EVs) are the secretory effectors of many cells, including cardiosphere-derived cells (CDCs) with demonstrated anti-senescent effect. 1. To determine the role of EVs (versus other blood fractions) on the rejuvenating effect of the young blood. 2. To evaluate the anti-aging properties of therapeutically administered EVs secreted by young-CDCs in an old organism. Neonatal blood fractioned in 4 components (whole blood, serum, EV-depleted serum and purified EVs) was used to treat old human cardiac stromal cells (CSPCs). CDCs were generated from neonatal rat hearts and the secreted CDC-EVs were purified. CDC-EVs were then tested in naturally-aged rats, using monthly injections over 4-months period. For validation in human samples, pediatric CDC-EVs were tested in aged human CSPCs and progeric fibroblasts. While the purified EVs reproduced the rejuvenating effects of the whole blood, CSPCs treated with EV-depleted serum exhibited the highest degree of senescence. Treatment with young CDC-EVs induce structural and functional improvements in the heart, lungs, skeletal muscle, and kidneys of old rats, while favorably modulating glucose metabolism and anti-senescence pathways. Lifespan was prolonged. EVs secreted by young CDCs exert broad-ranging anti-aging effects in aged rodents and in cellular models of human senescence. Our work not only identifies CDC-EVs as possible therapeutic candidates for a wide range of age-related pathologies, but also raises the question of whether EVs function as endogenous modulators of senescence.


Assuntos
Vesículas Extracelulares , Humanos , Ratos , Animais , Criança , Idoso , Vesículas Extracelulares/metabolismo , Envelhecimento , Coração , Fibroblastos , Pulmão , Senescência Celular/fisiologia
4.
Int J Cardiol ; 370: 18-25, 2023 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-36328111

RESUMO

BACKGROUND: Coronary endothelial dysfunction and vasospasm are potential causes of ischemia in patients without obstructive coronary stenoses (INOCA). OBJECTIVE: To evaluate the prevalence of endothelial dysfunction and the clinical profile of patients with INOCA in Spain, as well as to identify the predictors and the prognostic impact of endothelial dysfunction in this scenario. METHODS: A total of 438 consecutive patients with INOCA in whom the acetylcholine test was performed were prospectively enrolled. Patients were followed up at 1 and 2 years. RESULTS: Mean age was 62 ± 11 years with 60% female. Clinical presentation comprised 52.6% angina at rest, 61.2% exertional angina, and 31.7% dyspnea. There were no major complications of the acetylcholine test. Endothelial dysfunction was observed in 198 (45%) of patients, with severe vasoconstriction (defined as over 70% constriction), being observed in 101 (23%). Multivariable regression analysis showed that endothelial dysfunction was predicted by the presence of exertional angina (OR 2.2; CI95%1.01-2.55; p = 0.02), prior coronary disease (OR 2.46; CI95% 1.57-3.89; p < 0.01), and coronary intramyocardial bridging (2.35; CI95% 1.02-5.60; p = 0.04). Patients with endothelial dysfunction presented with worsening angina compared to those without endothelial dysfunction (25.6% vs. 12.8%) and also presented with increased levels of minimal effort angina (40% vs. 26,7%, p = 0.03) more frequently during the follow up than those without endothelial dysfunction. Endothelial dysfunction was also an independent predictor of the occurrence of myocardial infarction or unstable angina at one year (OR 2.85, CI 95% 1.01-9.25; p = 0.03). CONCLUSIONS: Endothelial dysfunction is present in almost half of patients with INOCA and is associated with worsening symptoms, as well as with a higher rate of adverse events.


Assuntos
Acetilcolina , Doença da Artéria Coronariana , Humanos , Feminino , Pessoa de Meia-Idade , Idoso , Masculino , Angina Pectoris/diagnóstico , Angina Pectoris/epidemiologia , Angina Pectoris/complicações , Vasoconstrição , Angina Instável/complicações
6.
BioTech (Basel) ; 11(3)2022 Jun 30.
Artigo em Inglês | MEDLINE | ID: mdl-35892928

RESUMO

Translational science has been introduced as the nexus among the scientific and the clinical field, which allows researchers to provide and demonstrate that the evidence-based research can connect the gaps present between basic and clinical levels. This type of research has played a major role in the field of cardiovascular diseases, where the main objective has been to identify and transfer potential treatments identified at preclinical stages into clinical practice. This transfer has been enhanced by the intromission of digital health solutions into both basic research and clinical scenarios. This review aimed to identify and summarize the most important translational advances in the last years in the cardiovascular field together with the potential challenges that still remain in basic research, clinical scenarios, and regulatory agencies.

7.
Front Cardiovasc Med ; 8: 663361, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-34504874

RESUMO

The main objective of cardiovascular disease (CVD) prevention is to reduce morbidity and mortality. Despite recommendations on evidence-based pharmacological treatment and lifestyle changes, the control of CV risk factors such as hypertension or dyslipidaemia is not optimal. The use of a CV polypill, including guideline-recommended drugs, as a baseline therapy, may contribute to improving risk factors control either by improving the treatment adherence or by the synergistic effect of its components. The CNIC-Polypill is the first CV polypill approved in Europe as an effective strategy for secondary prevention, which contains acetylsalicylic acid, atorvastatin (in two optional doses), and ramipril (in three optional doses) in a single pill. The present practical clinical document aims to provide a guide for patient management after an acute coronary syndrome (ACS) or with chronic CVD (CCVD) with a strategy based on the CNIC-Polypill, also considering the need to add other therapies for a personalized treatment. The most suitable clinical scenarios for the CNIC-Polypill use are discussed: (a) in patients after an ACS at discharge, (b) in patients with CCVD (chronic coronary syndrome, stroke, or peripheral artery disease) with uncontrolled low-density lipoprotein cholesterol (LDL-c) and/or blood pressure levels and (c) in patients with CCVD with well-controlled risk factors to simplify treatment and reduce polypharmacy in the context of CCVD prevention.

8.
Int J Mol Sci ; 22(17)2021 Aug 26.
Artigo em Inglês | MEDLINE | ID: mdl-34502146

RESUMO

Stem-cell-derived extracellular vesicles (EVs) have demonstrated multiple beneficial effects in preclinical models of cardiac diseases. However, poor retention at the target site may limit their therapeutic efficacy. Cardiac extracellular matrix hydrogels (cECMH) seem promising as drug-delivery materials and could improve the retention of EVs, but may be limited by their long gelation time and soft mechanical properties. Our objective was to develop and characterize an optimized product combining cECMH, polyethylene glycol (PEG), and EVs (EVs-PEG-cECMH) in an attempt to overcome their individual limitations: long gelation time of the cECMH and poor retention of the EVs. The new combined product presented improved physicochemical properties (60% reduction in half gelation time, p < 0.001, and threefold increase in storage modulus, p < 0.01, vs. cECMH alone), while preserving injectability and biodegradability. It also maintained in vitro bioactivity of its individual components (55% reduction in cellular senescence vs. serum-free medium, p < 0.001, similar to EVs and cECMH alone) and increased on-site retention in vivo (fourfold increase vs. EVs alone, p < 0.05). In conclusion, the combination of EVs-PEG-cECMH is a potential multipronged product with improved gelation time and mechanical properties, increased on-site retention, and maintained bioactivity that, all together, may translate into boosted therapeutic efficacy.


Assuntos
Matriz Extracelular/química , Vesículas Extracelulares/metabolismo , Hidrogéis/química , Miocárdio/citologia , Polietilenoglicóis/química , Animais , Vesículas Extracelulares/transplante , Humanos , Camundongos , Camundongos Endogâmicos BALB C , Miocárdio/metabolismo , Células-Tronco/metabolismo , Suínos
9.
Stem Cell Rev Rep ; 17(6): 2235-2244, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34463902

RESUMO

Biological treatments are one of the medical breakthroughs in the twenty-first century. The initial enthusiasm pushed the field towards indiscriminatory use of cell therapy regardless of the pathophysiological particularities of underlying conditions. In the reparative and regenerative cardiovascular field, the results of the over two decades of research in cell-based therapies, although promising still could not be translated into clinical scenario. Now, when we identified possible deficiencies and try to rebuild its foundations rigorously on scientific evidence, development of potency assays for the potential therapeutic product is one of the steps which will bring our goal of clinical translation closer. Although, highly challenging, the potency tests for cell products are considered as a priority by the regulatory agencies. In this paper we describe the main characteristics and challenges for a cell therapy potency test focusing on the cardiovascular field. Moreover, we discuss different steps and types of assays that should be taken into consideration for an eventual potency test development by tying together two fundamental concepts: target disease and expected mechanism of action. Development of potency assays for cell-based products consists in understanding the pathophysiology of the disease, identifying potential mechanisms of action (MoA) to counteract it and finding the most suitable cell-based product that exhibits these MoA. When applied, the potency assay needs to correlate bioactivity of the product, via a measurement related to the MoA, with treatment efficacy. However, in the cardiovascular field, the process faces several challenges and high requirements.


Assuntos
Terapia Baseada em Transplante de Células e Tecidos , Coração
10.
Gac. sanit. (Barc., Ed. impr.) ; 35(3)may.-jun. 2021. tab, ilus
Artigo em Espanhol | IBECS | ID: ibc-219288

RESUMO

Uno de los objetivos de la iniciativa ciudadana #CienciaenelParlamento es contribuir al establecimiento de una oficina parlamentaria de asesoramiento científico y tecnológico en las Cortes Generales. Dicha oficina estaría encargada de favorecer espacios de confluencia entre el conocimiento científico y las políticas públicas, y fomentar el debate entre políticos, expertos y la sociedad en general. En este artículo se revisan los principales mecanismos parlamentarios de asesoramiento científico, con especial atención a uno de ellos: las oficinas parlamentarias de asesoramiento científico y tecnológico. Estas oficinas existen en 22 parlamentos en todo el mundo, pero en España no. En segundo lugar, se describe la acción realizada por #CienciaenelParlamento en su colaboración con el Congreso de los Diputados durante la XII Legislatura, que culminó con unas jornadas en noviembre de 2018 en las que más de 200 científicos y casi 100 diputados debatieron sobre 12 temas de actualidad con el conocimiento científico más actualizado. Gracias a esta colaboración, el Congreso ha dado los primeros pasos para el establecimiento oficial de una oficina de asesoramiento científico. Por último, se exponen algunos ejemplos de cómo la acción de estas oficinas parlamentarias de asesoramiento científico y tecnológico en otros países se imbrica con la de otros agentes para un mayor debate público y la tramitación de mejores políticas públicas en temas de salud y otras áreas. Como conclusión, desde #CienciaenelParlamento creemos que una oficina asesora ayudaría a enriquecer el ecosistema ciencia-política en España. (AU)


One of the aims of the citizen's initiative #CienciaenelParlamento is helping to establishing a parliamentary office of scientific and technological advice in the Spanish parliament. Said office would be in charge of fostering networking spaces between scientific knowledge and public policies and of triggering public debate between policy-makers, experts and the general public. In this article, we first review the main parliamentary mechanisms of scientific advice, with special attention to one in particular: parliamentary offices of scientific and technological advice. These offices exist in 22 parliaments worldwide, but there are none in Spain. Second, we describe the activity undertaken by #CienciaenelParlamento in its collaboration with the Congress of Deputies during the 12th Spanish Legislature. This collaboration reached its peak with a two-day networking event in November 2018 with over 200 scientists and almost 100 deputies, who all debated twelve topics of social interest and the most up-to-date scientific knowledge. Thanks to this collaboration, the Congress has taken the first steps towards officially establishing a parliamentary science advice office. Lastly, we enumerate some examples about how these parliamentary offices in other countries have contributed with other stakeholders to better public debate and processing of public policies in public health and other areas. To conclude, we at #CienciaenelParlamento believe that a parliamentary science advice office would help to enhance the science-policy ecosystem in Spain. (AU)


Assuntos
Humanos , Ecossistema , Política Pública , Órgãos Governamentais , Tecnologia , Espanha
11.
Gac Sanit ; 35(3): 293-297, 2021.
Artigo em Espanhol | MEDLINE | ID: mdl-31948599

RESUMO

One of the aims of the citizen's initiative #CienciaenelParlamento is helping to establishing a parliamentary office of scientific and technological advice in the Spanish parliament. Said office would be in charge of fostering networking spaces between scientific knowledge and public policies and of triggering public debate between policy-makers, experts and the general public. In this article, we first review the main parliamentary mechanisms of scientific advice, with special attention to one in particular: parliamentary offices of scientific and technological advice. These offices exist in 22 parliaments worldwide, but there are none in Spain. Second, we describe the activity undertaken by #CienciaenelParlamento in its collaboration with the Congress of Deputies during the 12th Spanish Legislature. This collaboration reached its peak with a two-day networking event in November 2018 with over 200 scientists and almost 100 deputies, who all debated twelve topics of social interest and the most up-to-date scientific knowledge. Thanks to this collaboration, the Congress has taken the first steps towards officially establishing a parliamentary science advice office. Lastly, we enumerate some examples about how these parliamentary offices in other countries have contributed with other stakeholders to better public debate and processing of public policies in public health and other areas. To conclude, we at #CienciaenelParlamento believe that a parliamentary science advice office would help to enhance the science-policy ecosystem in Spain.


Assuntos
Ecossistema , Política Pública , Órgãos Governamentais , Humanos , Espanha , Tecnologia
12.
Cardiovasc Res ; 117(6): 1428-1433, 2021 05 25.
Artigo em Inglês | MEDLINE | ID: mdl-33258961

RESUMO

Great expectations have been set around the clinical potential of regenerative and reparative medicine in the treatment of cardiovascular diseases [i.e. in particular, heart failure (HF)]. Initial excitement, spurred by encouraging preclinical data, resulted in a rapid translation into clinical research. The sobering outcome of the resulting clinical trials suggests that preclinical testing may have been insufficient to predict clinical outcome. A number of barriers for clinical translation include the inherent variability of the biological products and difficulties to develop potency and quality assays, insufficient rigour of the preclinical research and reproducibility of the results, manufacturing challenges, and scientific irregularities reported in the last years. The failure to achieve clinical success led to an increased scrutiny and scepticism as to the clinical readiness of stem cells and gene therapy products among clinicians, industry stakeholders, and funding bodies. The present impasse has attracted the attention of some of the most active research groups in the field, which were then summoned to analyse the position of the field and tasked to develop a strategy, to re-visit the undoubtedly promising future of cardiovascular regenerative and reparative medicine, based on lessons learned over the past two decades. During the scientific retreat of the ESC Working Group on Cardiovascular Regenerative and Reparative Medicine (CARE) in November 2018, the most relevant and timely research aspects in regenerative and/or reparative medicine were presented and critically discussed, with the aim to lay out a strategy for the future development of the field. We report herein the main ideas and conclusions of that meeting.


Assuntos
Pesquisa Biomédica/tendências , Cardiologia/tendências , Cardiopatias/terapia , Miocárdio/patologia , Regeneração , Medicina Regenerativa/tendências , Animais , Ensaios Clínicos como Assunto , Modelos Animais de Doenças , Cardiopatias/patologia , Cardiopatias/fisiopatologia , Humanos , Recuperação de Função Fisiológica
13.
Circ Res ; 124(6): 938-951, 2019 03 15.
Artigo em Inglês | MEDLINE | ID: mdl-30870121

RESUMO

The myocardium consists of numerous cell types embedded in organized layers of ECM (extracellular matrix) and requires an intricate network of blood and lymphatic vessels and nerves to provide nutrients and electrical coupling to the cells. Although much of the focus has been on cardiomyocytes, these cells make up <40% of cells within a healthy adult heart. Therefore, repairing or regenerating cardiac tissue by merely reconstituting cardiomyocytes is a simplistic and ineffective approach. In fact, when an injury occurs, cardiac tissue organization is disrupted at the level of the cells, the tissue architecture, and the coordinated interaction among the cells. Thus, reconstitution of a functional tissue must reestablish electrical and mechanical communication between cardiomyocytes and restore their surrounding environment. It is also essential to restore distinctive myocardial features, such as vascular patency and pump function. In this article, we review the current status, challenges, and future priorities in cardiac regenerative or reparative medicine. In the first part, we provide an overview of our current understanding of heart repair and comment on the main contributors and mechanisms involved in innate regeneration. A brief section is dedicated to the novel concept of rejuvenation or regeneration, which we think may impact future development in the field. The last section describes regenerative therapies, where the most advanced and disruptive strategies used for myocardial repair are discussed. Our recommendations for priority areas in studies of cardiac regeneration or repair are summarized in Tables 1 and 2 .


Assuntos
Miócitos Cardíacos/fisiologia , Regeneração/fisiologia , Medicina Regenerativa , Fibroblastos/fisiologia , Humanos , Inflamação/fisiopatologia
15.
Arch Med Res ; 49(8): 558-567, 2018 11.
Artigo em Inglês | MEDLINE | ID: mdl-30606503

RESUMO

Heart failure (HF) is a progressively debilitating disease that considerably decreases the life expectancy and quality of life. It has become an important area of focus since it remains one of the most common reasons for admission in patients over the age of 65. Importantly, the incidence of HF has not declined within the past 20 years, but the survival after onset has increased in younger patients and men. This has been in part due to the growing interest in therapies that may decrease morbidity, mortality, along with the substantial health care expenditures associated with the disease. It can be said that over the past 50 years, there have been three distinct eras relating to HF management; a) the non-pharmacologic era, focused its treatments on fluid restriction; b) the pharmacologic era, marked by the increased use of inotropes and diuretics and the discovery of vasodilators, and the posterior discovery of medications relating to neurohormonal pathways; c) the device era, with the discovery, acceptance, and increased use of implantable cardioverter defibrillators, cardiac resynchronization therapy (CRT), and left ventricular assist devices (LVADs) among others. A new forth era could be about to arrive, with the advent of regenerative therapies. In this review article will discuss new therapeutic discoveries as well as provide insight into future therapies.


Assuntos
Terapia de Ressincronização Cardíaca/métodos , Cardiotônicos/uso terapêutico , Desfibriladores Implantáveis , Insuficiência Cardíaca/terapia , Medicina Regenerativa/métodos , Idoso , Diuréticos/uso terapêutico , Feminino , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/fisiopatologia , Transplante de Coração , Hospitalização , Humanos , Expectativa de Vida , Masculino , Qualidade de Vida , Resultado do Tratamento , Vasodilatadores/uso terapêutico
16.
Oncotarget ; 8(59): 99624-99636, 2017 Nov 21.
Artigo em Inglês | MEDLINE | ID: mdl-29245929

RESUMO

The heart is known for its resistance to cancer. Although different conjectures have been proposed to explain this phenomenon, none has been tested. We propose that the heart microenvironment may exert anti-cancer properties. So, our objective was to test the anti-oncogenic potential of cardiac-derived extracellular vesicles (EVs). For that EVs secreted by cardiosphere-derived cells (CDCs, heart progenitor cells) were tested in vitro on fibrosarcoma HT1080. In vivo models comprised the xenograft HT1080 fibrosarcoma in athymic mice (n=35), and spontaneous acute lymphocyte leukemia in old rats (n=44). CDC-EVs were compared with two control groups: EVs secreted by bone-marrow derived mesenchymal stem cells (MSC-EVs) and phosphate-buffered saline (PBS). Injection of CDC-EVs led to a 2.5-fold decrease of fibrosarcoma growth in mice (p<0.01 and p<0.05 for human and rat EVs, respectively) vs PBS group. The effect was associated with 2-fold decrease of tumor cells proliferation (p<0.001) and 1.5-fold increase of apoptosis (p<0.05) in CDC-EV vs PBS mice. Salutary changes in tumor gene and protein expression were observed in CDC-EV animals. CDC-EVs reduced tumor vascularization compared with PBS (p<0.05) and MSC-EVs (p<0.01). Moreover, CDC-EVs increased leukemia-free survival (p<0.05) in old rats vs PBS. MiR-146, highly enriched in CDC-EVs, may be implicated in part of the observed effects. In conclusion, this study presents the first evidence that ties together the long-recognized enigma of the "heart immunity to cancer" with an antioncogenic effect of heart-derived EVs. These findings open up cancer as a new therapeutic target for CDC-EVs.

17.
Eur Heart J ; 38(39): 2957-2967, 2017 Oct 14.
Artigo em Inglês | MEDLINE | ID: mdl-29020403

RESUMO

AIM: The aim is to assess the effects of CDCs on heart structure, function, gene expression, and systemic parameters in aged rats. Diastolic dysfunction is characteristic of aged hearts. Cardiosphere-derived cell (CDC) therapy has exhibited several favourable effects on heart structure and function in humans and in preclinical models; however, the effects of CDCs on aging have not been evaluated. METHODS AND RESULTS: We compared intra-cardiac injections of neonatal rat CDCs to vehicle (phosphate-buffered saline, PBS) in 21.8 ± 1.6 month-old rats (mean ± standard deviation; n = 23 total). Ten rats 4.1 ± 1.5 months of age comprised a young reference group. Blood, echocardiographic, haemodynamic and treadmill stress tests were performed at baseline in all animals, and 1 month after treatment in old animals. Histology and the transcriptome were assessed after terminal phenotyping. For in vitro studies, human heart progenitors from older donors, or cardiomyocytes from aged rats were exposed to human CDCs or exosomes secreted by CDCs (CDC-XO) from paediatric donors. Transcriptomic analysis revealed that CDCs, but not PBS, recapitulated a youthful pattern of gene expression in the hearts of old animals (85.5% of genes differentially expressed, P < 0.05). Telomeres in heart cells were longer in CDC-transplanted animals (P < 0.0001 vs. PBS). Cardiosphere-derived cells attenuated hypertrophy by echo (P < 0.01); histology confirmed decreases in cardiomyocyte area (P < 0.0001) and myocardial fibrosis (P < 0.05) vs. PBS. Cardiosphere-derived cell injection improved diastolic dysfunction [lower E/A (P < 0.01), E/E' (P = 0.05), end-diastolic pressure-volume relationship (P < 0.05) compared with baseline), and lowered serum brain natriuretic peptide (both P < 0.05 vs. PBS). In CDC-transplanted old rats, exercise capacity increased ∼20% (P < 0.05 vs. baseline), body weight decreased ∼30% less (P = 0.05 vs. PBS) and hair regrowth after shaving was more robust (P < 0.05 vs. PBS). Serum biomarkers of inflammation (IL-10, IL-1b, and IL-6) improved in the CDC group (P < 0.05 for each, all vs. PBS). Young CDCs secrete exosomes which increase telomerase activity, elongate telomere length, and reduce the number of senescent human heart cells in culture. CONCLUSION: Young CDCs rejuvenate old animals as gauged by cardiac gene expression, heart function, exercise capacity, and systemic biomarkers.


Assuntos
Terapia Baseada em Transplante de Células e Tecidos/métodos , Coração/fisiologia , Transplante de Células-Tronco/métodos , Idoso , Análise de Variância , Animais , Senescência Celular/fisiologia , Células-Tronco Fetais/citologia , Humanos , Pessoa de Meia-Idade , Miócitos Cardíacos/citologia , Condicionamento Físico Animal/fisiologia , Ratos Endogâmicos F344 , Ratos Sprague-Dawley , Regeneração/fisiologia , Rejuvenescimento/fisiologia , Esferoides Celulares/citologia , Telômero/fisiologia
18.
Sci Rep ; 6: 39603, 2016 12 22.
Artigo em Inglês | MEDLINE | ID: mdl-28004756

RESUMO

The platelet-specific collagen receptor glycoprotein VI (GPVI) is critical for the formation of arterial thrombosis in vivo. We analyzed GPVI-activated platelets from ST-elevation myocardial infarction (STEMI) patients and matched stable coronary artery disease (SCAD) controls in order to provide novel clues on the degree of involvement of GPVI signaling in the acute event. Firstly, platelets were isolated from systemic venous blood and activated with the GPVI specific agonist CRP (collagen-related peptide). STEMI and SCAD samples were compared by a phosphoproteomics approach. Validations were by immunoblotting in systemic and intracoronary blood from independent cohorts of patients. Twenty-six differentially regulated proteins were identified when comparing CRP-activated systemic platelets from STEMI and SCAD patients, 4 of which were selected for validation studies: PLCÉ£2, G6f, SLP-76, and Dok-2. Immunoblot analyses showed these four proteins had higher tyrosine phosphorylation levels in response to CRP in platelets from STEMI patients, being these levels more pronounced at the culprit site of coronary artery occlusion. Moreover, platelet aggregation studies showed a higher response to GPVI agonists in STEMI patients compared to SCAD controls. In conclusion, we show an altered activation state of GPVI signaling in STEMI patients, confirming this receptor as a promising anti-thrombotic target for myocardial infarction.


Assuntos
Plaquetas/metabolismo , Ativação Plaquetária , Agregação Plaquetária , Glicoproteínas da Membrana de Plaquetas/metabolismo , Infarto do Miocárdio com Supradesnível do Segmento ST/metabolismo , Transdução de Sinais , Idoso , Estudos de Coortes , Colágeno/química , Doença da Artéria Coronariana/metabolismo , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Fosforilação , Proteômica , Trombose/metabolismo
19.
Proteomics Clin Appl ; 10(8): 851-8, 2016 08.
Artigo em Inglês | MEDLINE | ID: mdl-27095521

RESUMO

PURPOSE: Platelets play a fundamental role in the atherothrombotic events that lead to an acute myocardial infarction. In the present study we compared the proteome of intracoronary and peripheral arterial platelets from ST-elevation myocardial infarction (STEMI) patients in the search for potential platelet biomarkers/drug targets related to what is happening at the culprit site. EXPERIMENTAL DESIGN: Ten STEMI patients were recruited and blood collected from the occluded coronary artery, at the culprit site, in the moment of reperfusion. Systemic blood obtained from the radial artery of the same patients was used as control. Proteome analysis was based on high-resolution 2D-DIGE and mass spectrometry. Validations were by western blotting in a group of 11 patients. RESULTS: Sixteen differentially regulated protein features were identified, corresponding to 15 ORFs, mostly related to cytoskeletal and signaling proteins. We demonstrate the up-regulation of integrin αIIb (ITA2B), the adapter Src kinase-associated phosphoprotein-2 (SKAP2), and thrombospondin-1 isoforms in intracoronary platelets. CONCLUSION AND CLINICAL RELEVANCE: This study constitutes the first analyzing in detail the proteome of arterial intracoronary platelets from STEMI patients. We show variations in the platelet proteome when comparing intracoronary and peripheral platelets. Observed differences might be related to platelet activation events at the culprit site.


Assuntos
Plaquetas/metabolismo , Vasos Coronários/patologia , Infarto do Miocárdio/sangue , Ativação Plaquetária , Proteômica/métodos , Eletroforese em Gel Diferencial Bidimensional , Regulação para Cima , Doença Aguda , Idoso , Artefatos , Plaquetas/fisiologia , Feminino , Humanos , Peptídeos e Proteínas de Sinalização Intracelular/metabolismo , Masculino , Infarto do Miocárdio/metabolismo , Infarto do Miocárdio/fisiopatologia , Glicoproteína IIb da Membrana de Plaquetas/metabolismo , Talina/metabolismo , Trombospondina 1/metabolismo
20.
Biomark Med ; 9(3): 209-16, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-25731208

RESUMO

AIM: We evaluated the prognostic value of plasmatic fluorescent advanced glycation end-products (AGE) to predict long-term death and reinfarction in patients with acute coronary syndrome (ACS). MATERIALS & METHODS: A unicenter registry comprising a prospective cohort of 210 ACS patients (47.4% ST-segment elevation myocardial infarction) followed up during 3.1 ± 0.9 years were carried out. RESULTS: Cardiovascular death ratio was 5.7% and 23 patients suffered reinfarction (11.0%). The hazard ratio of the multivariate analysis with respect to death and reinfarction for AGE adjusted by GRACE risk score was 1.011 (1.006-1.016), p < 0.001. CONCLUSION: Fluorescent AGE plasma levels were an independent predictor of death and reinfarction in the long-term follow-up of patients with ACS.


Assuntos
Síndrome Coronariana Aguda/diagnóstico , Síndrome Coronariana Aguda/mortalidade , Produtos Finais de Glicação Avançada/sangue , Infarto do Miocárdio/sangue , Infarto do Miocárdio/diagnóstico , Síndrome Coronariana Aguda/sangue , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Recidiva
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