ANTONIO DE PADUA MANSUR
Projetos de Pesquisa
Unidades Organizacionais
Departamento de Cardio-Pneumologia, Faculdade de Medicina - Docente
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
Instituto do Coração, Hospital das Clínicas, Faculdade de Medicina
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conferenceObject Left ventricular ejection fraction, systolic blood pressure and smoking history are good predictors of respiratory muscle weakness in systolic heart failure(2018) NAKAGAWA, N. K. Naomi Kondo; DIZ, M. A.; KAWAUCHI, T. S.; ANDRADE, G. N.; UMEDA, Iik; MURAKAMI, F. M.; OLIVEIRA-MAUL, J. P.; NASCIMENTO, J. A.; NUNES, N.; TAKADA, J. Y.; MANSUR, A. P.; CAHALIN, L. P.- Cerebral blood flow changes during intermittent acute hypoxia in patients with heart failure(2018) MANSUR, Antonio P.; ALVARENGA, Glaura Souza; KOPEL, Liliane; GUTIERREZ, Marco Antonio; CONSOLIM-COLOMBO, Fernanda Marciano; HAJJAR, Ludhmila Abrahao; LAGE, Silvia GelasObjective: Heart failure (HF) is associated with intermittent hypoxia, and the effects of this hypoxia on the cardiovascular system are not well understood. This study was performed to compare the effects of acute hypoxia (10% oxygen) between patients with and without HF. Methods: Fourteen patients with chronic HF and 17 matched control subjects were enrolled. Carotid artery changes were examined during the first period of hypoxia, and brachial artery changes were examined during the second period of hypoxia. Data were collected at baseline and after 2 and 4 minutes of hypoxia. Norepinephrine, epinephrine, dopamine, and renin were measured at baseline and after 4 minutes hypoxia. Results: The carotid blood flow, carotid systolic diameter, and carotid diastolic diameter increased and the carotid resistance decreased in patients with HF. Hypoxia did not change the carotid compliance, distensibility, brachial artery blood flow and diameter, or concentrations of sympathomimetic amines in patients with HF, but hypoxia increased the norepinephrine level in the control group. Hypoxia increased minute ventilation and decreased the oxygen saturation and end-tidal carbon dioxide concentration in both groups. Conclusion: Hypoxia-induced changes in the carotid artery suggest an intensification of compensatory mechanisms for preservation of cerebral blood flow in patients with HF.
bookPart Na Mulher: é Diferente do Homem?(2018) MANSUR, Antonio de Pádua- Gene Expression of Sirtuin-1 and Endogenous Secretory Receptor for Advanced Glycation End Products in Healthy and Slightly Overweight Subjects after Caloric Restriction and Resveratrol Administration(2018) ROGGERIO, Alessandra; STRUNZ, Celia M. Cassaro; PACANARO, Ana Paula; LEAL, Dalila Pinheiro; TAKADA, Julio Y.; AVAKIAN, Solange D.; MANSUR, Antonio de PaduaSirtuin-1 (Sirt-1) and an endogenous secretory receptor for an advanced glycation end product (esRAGE) are associated with vascular protection. The purpose of this study was to examine the effects of resveratrol (RSV) and caloric restriction (CR) on gene expression of Sirt-1 and esRAGE on serum levels of Sirt1 and esRAGE in healthy and slightly overweight subjects. The study included 48 healthy subjects randomized to 30 days of RSV (500 mg/day) or CR (1000 cal/day). Waist circumference (p = 0.011), TC (p = 0.007), HDL (p = 0.031), non-HDL (p = 0.025), ApoA1 (p = 0.011), and ApoB (p = 0.037) decreased in the CR group. However, TC (p = 0.030), non-HDL (p = 0.010), ApoB (p = 0.034), and HOMA-IR (p = 0.038) increased in the RSV group. RSV and CR increased serum levels of Sirt-1, respectively, from 1.06 +/- 0.71 ng/mL to 5.75 +/- 2.98 ng/mL (p < 0.0001) and from 1.65 +/- 1.81 ng/mL to 5.80 +/- 2.23 ng/mL (p < 0.0001). esRAGE serum levels were similar in RSV (p = NS) and CR (p = NS) groups. Significant positive correlation was observed between gene expression changes of Sirt-1 and esRAGE in RSV (r = 0.86; p < 0.0001) and in CR (r = 0.71; p < 0.0001) groups, but not for the changes in serum concentrations. CR promoted increases in the gene expression of esRAGE (post/pre). Future long-term studies are needed to evaluate the impact of these outcomes on vascular health.