CARLOS JOSE DORNAS GONCALVES BARBOSA
Projetos de Pesquisa
Unidades Organizacionais
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina - Médico
20 resultados
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conferenceObject Is there a Correlation Between Bleeding Risk Score and Platelet Aggregability?(2014) ARANTES, Flavia B.; FURTADO, Remo H.; BARBOSA, Carlos J.; FRANCI, Andre; MENEZES, Fernando R.; FALCAO, Talia D.; NAKASHIMA, Carlos A.; BARACIOLI, Luciano M.; RAMIRES, Jose A.; NICOLAU, Jose C.- Do Diabetic Patients with Acute Coronary Syndromes Have a Higher Threshold for Ischemic Pain?(2014) NICOLAU, Jose Carlos; BARBOSA, Carlos Jose Dornas Goncalves; FRANCI, Andre; BARACIOLI, Luciano Moreira; FRANKEN, Marcelo; LIMA, Felipe Gallego; GIRALDEZ, Roberto Rocha; KALIL FILHO, Roberto; RAMIRES, Jose Antonio Franchini; GIUGLIANO, Robert P.Background: Data from over 4 decades have reported a higher incidence of silent infarction among patients with diabetes mellitus (DM), but recent publications have shown conflicting results regarding the correlation between DM and presence of pain in patients with acute coronary syndromes (ACS). Objective: Our primary objective was to analyze the association between DM and precordial pain at hospital arrival. Secondary analyses evaluated the association between hyperglycemia and precordial pain at presentation, and the subgroup of patients presenting within 6 hours of symptom onset. Methods: We analyzed a prospectively designed registry of 3,544 patients with ACS admitted to a Coronary Care Unit of a tertiary hospital. We developed multivariable models to adjust for potential confounders. Results: Patients with precordial pain were less likely to have DM (30.3%) than those without pain (34.0%; unadjusted p = 0.029), but this difference was not significant after multivariable adjustment, for the global population (p = 0.84), and for subset of patients that presented within 6 hours from symptom onset (p = 0.51). In contrast, precordial pain was more likely among patients with hyperglycemia (41.2% vs 37.0% without hyperglycemia, p = 0.035) in the overall population and also among those who presented within 6 hours (41.6% vs. 32.3%, p = 0.001). Adjusted models showed an independent association between hyperglycemia and pain at presentation, especially among patients who presented within 6 hours (OR = 1.41, p = 0.008). Conclusion: In this non-selected ACS population, there was no correlation between DM and hospital presentation without precordial pain. Moreover, hyperglycemia correlated significantly with pain at presentation, especially in the population that arrived within 6 hours from symptom onset.
- Relation of High Lipoprotein (a) Concentrations to Platelet Reactivity in Individuals with and Without Coronary Artery Disease(2020) SALSOSO, Rocio; DALCOQUIO, Talia F.; FURTADO, Remo H. M.; FRANCI, Andre; BARBOSA, Carlos J. D. G.; GENESTRETI, Paulo R. R.; STRUNZ, Celia M. C.; LIMA, Viviane; BARACIOLI, Luciano M.; GIUGLIANO, Robert P.; GOODMAN, Shaun G.; GURBEL, Paul A.; MARANHAO, Raul C.; NICOLAU, Jose C.Introduction Lipoprotein (a) [Lp(a)] is a risk factor for coronary artery disease (CAD). To the best of our knowledge, this is the first study addressing the relationship between Lp(a) and platelet reactivity in primary and secondary prevention. Methods Lp(a) was evaluated in 396 individuals with (82.3%) and without (17.7%) obstructive CAD. The population was divided into two groups according to Lp(a) concentrations with a cutoff value of 50 mg/dL. The primary objective was to evaluate the association between Lp(a) and adenosine diphosphate (ADP)-induced platelet reactivity using the VerifyNow (TM) P2Y(12)assay. Platelet reactivity was also induced by arachidonic acid and collagen-epinephrine (C-EPI) and assessed by Multiplate (TM), platelet function analyzer (TM) 100 (PFA-100), and light transmission aggregometry (LTA) assays. Secondary objectives included the assessment of the primary endpoint in individuals with or without CAD. Results Overall, 294 (74.2%) individuals had Lp(a) < 50 mg/dL [median (IQR) 13.2 (5.8-27.9) mg/dL] and 102 (25.8%) had Lp(a) >= 50 mg/dL [82.5 (67.6-114.5) mg/dL],P < 0.001. Univariate analysis in the entire population revealed no differences in ADP-induced platelet reactivity between individuals with Lp(a) >= 50 mg/dL (249.4 +/- 43.8 PRU) versus Lp(a) < 50 mg/dL (243.1 +/- 52.2 PRU),P = 0.277. Similar findings were present in individuals with (P = 0.228) and without (P = 0.669) CAD, and regardless of the agonist used or method of analysis (allP > 0.05). Finally, multivariable analysis did not show a significant association between ADP-induced platelet reactivity and Lp(a) >= 50 mg/dL [adjusted OR = 1.00 [(95% CI 0.99-1.01),P = 0.590]. Conclusion In individuals with or without CAD, Lp(a) >= 50 mg/dL was not associated with higher platelet reactivity.
conferenceObject ACUTE CORONARY SYNDROMES IN THE VERY OLD: THERAPIES AND OUTCOME IN THE LONG-TERM FOLLOW-UP(2014) NICOLAU, Jose C.; FRANCI, Andre; BARBOSA, Carlos; BARACIOLI, Luciano; FURTADO, Remo; GIANNETTI, Natali; GIRALDEZ, Roberto; LIMA, Felipe; FRANKEN, Marcelo; RAMIRES, Jose; KALIL-FILHO, Roberto; FERRAZ, Thiago- Platelet function, coagulation and fibrinolysis in patients with previous coronary and cerebrovascular ischemic events(2019) BARBOSA, Carlos Jose Dornas Goncalves; BARREIROS, Renata de Souza; FRANCI, Andre; ARANTES, Flavia Bittar Brito; FURTADO, Remo Holanda de Mendonca; STRUNZ, Celia Maria Cassaro; ROCHA, Tania Rubia Flores da; BARACIOLI, Luciano Moreira; RAMIRES, Jose Antonio Franchini; KALIL-FILHO, Roberto; NICOLAU, Jose CarlosOBJECTIVES: Ischemic stroke (IS) or transient ischemic attack (TIA) history is present in 4-17% of patients with coronary artery disease (CAD). This subgroup of patients is at high risk for both ischemic and bleeding events. The aim of this study was to determine the role of platelet aggregability, coagulation and endogenous fibrinolysis in patients with CAD and previous IS or TIA. METHODS: A prospective case-control study that included 140 stable CAD patients divided into two groups: the CASE group (those with a previous IS/TIA, n=70) and the CONTROL group (those without a previous IS/TIA, n=70). Platelet aggregability (VerifyNow Aspirin (R) and VerifyNow P2Y12 (R)), coagulation (fibrinogen and thromboelastography by Reorox (R)) and endogenous fibrinolysis (D dimer and plasminogen activator inhibitor-1) were evaluated. RESULTS: Patients in the CASE group presented significantly higher systolic blood pressure levels (135.84 +/- 16.09 vs 123.68 +/- 16.11, p <0.01), significantly more previous CABG (25.71% vs 10%, p=0.015) and significantly higher calcium channel blocker usage (42.86% vs 24.29%, p=0.02) than those in the control group. In the adjusted models, low triglyceride values, low hemoglobin values and higher systolic blood pressure were significantly associated with previous IS/TIA (CASE group). Most importantly, platelet aggregability, coagulation and fibrinolysis tests were not independently associated with previous cerebrovascular ischemic events (CASE group). CONCLUSION: Platelet aggregability, coagulation and endogenous fibrinolysis showed similar results among CAD patients with and without previous IS/TIA. Therefore, it remains necessary to identify other targets to explain the higher bleeding risk presented by these patients.
conferenceObject INCREASED BODYWEIGHT AND INADEQUATE RESPONSE TO ASPIRIN IN INDIVIDUALS WITH CORONARY ARTERY DISEASE(2019) FURTADO, Remo Holanda de Mendonca; ARANTES, Flavia; BARBOSA, Carlos; FRANCI, Andre; MENEZES, Fernando; SALSOSO, Rocio; DALCOQUIO, Talia; NAKASHIMA, Carlos; SCANAVINI FILHO, Marco; FERRARI, Aline; GENESTRETI, Paulo; BARACIOLI, Luciano; NICOLAU, Jose C.- Influence of Direct Thrombin Inhibitor and Low Molecular Weight Heparin on Platelet Function in Patients with Coronary Artery Disease: A Prospective Interventional Trial(2020) ARANTES, Flavia B. B.; MENEZES, Fernando R.; FRANCI, Andre; BARBOSA, Carlos J. D. G.; DALCOQUIO, Talia F.; NAKASHIMA, Carlos A. K.; BARACIOLI, Luciano M.; FURTADO, Remo H. M.; NOMELINI, Quintiliano S. S.; RAMIRES, Jose A. F.; KALIL FILHO, Roberto; NICOLAU, Jose C.Introduction The interaction between anticoagulants and platelet function is complex. Previous publications showed mixed results regarding the role of heparins in platelet aggregation. On the other hand, the direct thrombin inhibitor (DTI) dabigatran might enhance the risk of myocardial infarction in patients with atrial fibrillation, which could be related to increased platelet aggregability. Methods This was a prospective, interventional study of patients with chronic coronary artery disease (CAD) taking low-dose aspirin. The objective of the current study was to compare the effects of dabigatran versus enoxaparin on platelet aggregability. Subjects initially were on orally administered dabigatran for 5 days followed by subcutaneously administered enoxaparin after a 30-day washout period. Platelet function was assessed at baseline and after each intervention by multiple electrode aggregometry (MEA-ASPI) (primary endpoint), serum thromboxane B2 (TXB2), VerifyNow Aspirin (TM), and coagulation tests (secondary endpoints). Results Compared to baseline MEA-ASPI values, dabigatran increased platelet aggregation while enoxaparin decreased platelet aggregation (+ 5 U +/- 24.1 vs - 6 U +/- 22.2, respectively, p = 0.012). The TXB2 assay showed the same pattern (+ 2 pg/ml for dabigatran vs - 13 pg/ml for enoxaparin, p = 0.011). None of the additional tests showed significant differences between the groups. Individually, compared to baseline TXB2 results, enoxaparin significantly decreased platelet activation [33 (16.5-95) pg/mL vs 20 (10-52) pg/mL, respectively, p = 0.026], but no significant differences were observed with dabigatran. Conclusions DTI and anti-Xa drugs exert opposite effects on platelet function. A significant decrease in platelet activation through COX1 (also known as prostaglandin G/H synthase 1) was observed with enoxaparin, but no significant differences in platelet function were observed with dabigatran.
- Diretrizes da Sociedade Brasileira de Cardiologia sobre Angina Instável e Infarto Agudo do Miocárdio sem Supradesnível do Segmento ST (II Edição, 2007) - Atualização 2013/2014(2014) NICOLAU, JC; TIMERMAN, A; MARIN-NETO, JA; PIEGAS, LS; BARBOSA, CJDG; FRANCI, A; AVEZUM JR., A; CARVALHO, ACC; MARKMAN FILHO, B; POLANCZYK, CA; ROCHITTE, CE; SERRANO JÚNIOR, CV; PRECOMA, DB; SILVA JUNIOR, DG; ALBUQUERQUE, DC; STEFANINI, E; KNOBEL, E; JATENE, FB; FERES, F; MORCERF, FAP; GANEM, F; LIMA FILHO, FA; FEITOSA FILHO, GS; FERREIRA, JFM; MENEGHETTI, JC; SARAIVA, JFK; SILVA, LS; MAIA, LN; BARACIOLI, LM; LISBOA, LAF; DALLAN, LAO; BODANESE, LC; ANDRADE, MD; OLIVEIRA JÚNIOR, M; DUTRA, OP; COELHO, OR; LEÃES, PE; ALBUQUERQUE, PF; LEMOS, P; KALIL, R; COSTA, RVC; ESPORCATE, R; MARINO, RL; BOTELLHO, RV; MENEGHELO, RS; SPROVIERI, SR; TIMERMAN, S; MATHIAS JÚNIOR, W
conferenceObject Mortality impact of previous coronary angioplasty in the long-term follow-up of patients with acute coronary syndromes submitted to coronary artery bypass surgery during the same hospitalization(2014) NICOLAU, J. C.; FRANKEN, M.; FERRAZ, T.; FRANCI, A.; BARBOSA, C. J. D. G.; KALIL FILHO, R.; RAMIRES, J. A. F.; LISBOA, L. A. F.; DALLAN, L. A. O.; JATENE, F. B.- Lipid transfer to high-density lipoproteins in coronary artery disease patients with and without previous cerebrovascular ischemic events(2019) BARBOSA, Carlos J. D. G.; MARANHAO, Raul C.; BARREIROS, Renata S.; FREITAS, Fatima R.; FRANCI, Andre; STRUNZ, Celia M. C.; ARANTES, Flavia B. B.; TAVONI, Thauany M.; RAMIRES, Jose A. F.; KALIL FILHO, Roberto; NICOLAU, Jose C.Background Patients with coronary artery disease (CAD) and previous ischemic cerebrovascular events (ICVE, ischemic stroke, or transitory ischemic attack) constitute a high-risk subgroup for cardiovascular outcomes. High-density lipoprotein cholesterol (HDL-C) levels are correlated with cardiovascular events. Lipid transfer to HDL affects structure size and HDL subclass profile. Impairment of this transfer could influence ischemic risk seen in patients with CAD + ICVE. The objective was to evaluate the HDL ability to receive the lipids in patients with CAD with or without ICVE. Methods Patients with CAD + ICVE (n = 60) and patients with CAD only (n = 60) were matched by age, sex, acute coronary syndromes (ACS) event type, and time elapsed between the ACS event and inclusion in the study. Lipid transfer to HDL was evaluated by incubating donor lipid nanoparticles labeled with radioactive unesterified cholesterol (UC) and esterified cholesterol (EC), phospholipid (PL), and triglyceride (TG) with whole plasma. After the chemical precipitation of non-HDL fractions and nanoparticles, the supernatant was counted for HDL radioactivity. Results CAD + ICVE group presented with impaired lipid transfer to HDL for PL (CAD + ICVE: 21.14 +/- 2.7% vs CAD: 21.67 +/- 3.1%, P = .03), TG (CAD + ICVE: 4.88 +/- 0.97% vs CAD: 5.63 +/- 0.92%, P = .002), and UC (CAD + ICVE: 5.55 +/- 1.19% vs CAD: 6.16 +/- 1.14%, P = .009). Lipid transfer to HDL was similar in both groups for EC. Adjusted models showed similar results. Conclusion Patients with CAD and ICVE have reduced lipid transfer to HDL compared to those with CAD only. Dysfunctional HDL may account for the higher incidence of ischemic outcomes observed in this population.