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| Dourado,P.M.M.; Tsutsui,J.M.; Santos,J.M.T.; Aiello,V.D.; Mathias Jr.,W.; Ramires,A.F.; da Luz,P.L.; Chagas,A.C.P.. |
| Myocardial contrast echocardiography has been used for assessing myocardial perfusion. Some concerns regarding its safety still remain, mainly regarding the induction of microvascular alterations. We sought to determine the bioeffects of microbubbles and real-time myocardial contrast echocardiography (RTMCE) in a closed-chest canine model. Eighteen mongrel dogs were randomly assigned to two groups. Nine were submitted to continuous intravenous infusion of perfluorocarbon-exposed sonicated dextrose albumin (PESDA) plus continuous imaging using power pulse inversion RTMCE for 180 min, associated with manually deflagrated high-mechanical index impulses. The control group consisted of 3 dogs submitted to continuous imaging using RTMCE without PESDA, 3 dogs... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Microbubbles; Ultrasound; Bioeffects; Myocardial contrast echocardiography. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000600017 |
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| Bertini,P.J.; Parga,J.R.; Chagas,A.C.P.; Rochitte,C.E.; Ávila,L.F.; Favarato,D.; Luz,P.L. da. |
| The aim of the present study was to evaluate the role of magnetic resonance imaging (MRI) for the non-invasive detection of coronary abnormalities and specifically the remodeling process in patients with coronary artery disease (CAD). MRI was performed in 10 control healthy subjects and 26 patients with angiographically proven CAD of the right coronary (RCA) or left anterior descending (LAD) artery; 23 patients were within two months of acute coronary syndromes, and 3 had stable angina with a positive test for ischemia. Wall thickness (WT), vessel wall area (VWA), total vessel area (TVA), and luminal area (LA) were measured. There were significant increases in WT (mean ± SEM, RCA: 2.62 ± 0.75 vs 0.53 ± 0.15 mm; LAD: 2.21 ± 0.69 vs 0.62 ± 0.24 mm) and in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coronary disease; Coronary remodeling; Magnetic resonance imaging. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2005000500002 |
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| da Luz,P.L.; Nishiyama,M.; Chagas,A.C.P.. |
| In this article, we compare two strategies for atherosclerosis treatment: drugs and healthy lifestyle. Statins are the principal drugs used for the treatment of atherosclerosis. Several secondary prevention studies have demonstrated that statins can significantly reduce cardiovascular events including coronary death, the need for surgical revascularization, stroke, total mortality, as well as fatal and non-fatal myocardial infarction. These results were observed in both men and women, the elderly, smokers and non-smokers, diabetics and hypertensives. Primary prevention studies yielded similar results, although total mortality was not affected. Statins also induce atheroma regression and do not cause cancer. However, many unresolved issues remain, such as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atherosclerosis; Statins; Lifestyle; Coronary disease; Prevention. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011001000002 |
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| Faria-Neto,J.R.; Chagas,A.C.P.; Bydlowski,S.P.; Lemos Neto,P.A.; Chamone,D.A.; Ramirez,J.A.F.; da Luz,P.L.. |
| Hyperhomocystinemia has been related to an increased risk of cardiovascular disease in several studies. The C677T polymorphism for the gene that encodes the methylenetetrahydrofolate reductase enzyme (MTHFR) and low plasma folate levels are common causes of hyperhomocystinemia. Due to differences in nutritional patterns and genetic background among different countries, we evaluated the role of hyperhomocystinemia as a coronary artery disease (CAD) risk factor in a Brazilian population. The relation between homocysteine (Hcy) and the extent of CAD, measured by an angiographic score, was determined. A total of 236 patients referred for coronary angiography for clinical reasons were included. CAD was found in 148 (62.7%) patients and 88 subjects had normal or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hyperhomocystinemia; Homocysteine; Methylenetetrahydrofolate reductase; Atherosclerosis; Folic acid deficiency. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2006000400005 |
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| Bacci,M.R.; Leme,R.C.P.; Zing,N.P.C.; Murad,N.; Adami,F.; Hinnig,P.F.; Feder,D.; Chagas,A.C.P.; Fonseca,F.L.A.. |
| Community-acquired pneumonia (CAP) is amongst the leading causes of death worldwide. As inflammatory markers, cytokines can predict outcomes, if interpreted together with clinical data and scoring systems such as CURB-65, CRB, and Acute Physiology and Chronic Health Evaluation II (APACHE II). The aim of this study was to determine the impact of inflammatory biomarkers on the early mortality of hospitalized CAP patients. Twenty-seven CAP patients needing hospitalization were enrolled for the study and samples of interleukin-1 (IL-1) and interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-α), C-reactive protein (CRP), and homocystein were collected at the time of admission (day 1) as well as on the seventh day of the treatment. There was a significant... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Community acquired pneumonia; Interleukin-6; Tumor necrosis factor α; Sepsis. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2015000500427 |
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| Dourado,P.M.M.; Tsutsui,J.M.; Landim,M.B.P.; Casella Filho,A.; Galvao,T.F.G.; Aiello,V.D.; Mathias Jr.,W.; da Luz,P.L.; Chagas,A.C.P.. |
| Dyslipidemia is related to the progression of atherosclerosis and is an important risk factor for acute coronary syndromes. Our objective was to determine the effect of rosuvastatin on myocardial necrosis in an experimental model of acute myocardial infarction (AMI). Male Wistar rats (8-10 weeks old, 250-350 g) were subjected to definitive occlusion of the left anterior descending coronary artery to cause AMI. Animals were divided into 6 groups of 8 to 11 rats per group: G1, normocholesterolemic diet; G2, normocholesterolemic diet and rosuvastatin (1 mg·kg-1·day-1) 30 days after AMI; G3, normocholesterolemic diet and rosuvastatin (1 mg·kg-1·day-1) 30 days before and after AMI; G4, hypercholesterolemic diet; G5, hypercholesterolemic diet and rosuvastatin (1... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Acute myocardial infarction; Rosuvastatin; Hypercholesterolemia; Myocardial necrosis. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2011000500013 |
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