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Previous issue date: 2016-03-30 / Metabolic syndrome is a public health problem due to its high prevalence, once it is characterized by a set of risk factors that, when associated, predisposes to the development of atherosclerosis and its complications (acute myocardial infarction and stroke) and diabetes mellitus type 2. These risk factors are interconnected by biochemical, clinical, metabolic and inflammatory reactions. Chronic inflammation is closely related to the adipose tissue, predisposing to an induction of various cytokines which constitutes an important link between insulin resistance and endothelial dysfunction, precursor of atherosclerosis. The aim of this study was to evaluate the profile of cytokines in patients with metabolic syndrome and severe coronary artery disease. This was a controlled cross-sectional study with descriptive-analytic approach in patients treated at the Cardiometabolic Clinic of the Hospital S?o Lucas / PUCRS, Porto Alegre, Brazil. The sample was composed of three independent groups. Group 1 (n = 30) was composed of patients diagnosed with metabolic syndrome without significant coronary artery disease; group 2 (n = 30) was composed of patients with metabolic syndrome but with severe coronary artery disease; and group 3, control group, comprised healthy individuals. The activities of pro and anti-inflammatory cytokines, the oxidative stress, the anthropometric data and the biochemical data were evaluated. Levels of pro-inflammatory interleukins (TNF-?, IL-6, IL-12) were significantly higher in group 1, and so were IL-10 (anti-inflammatory) levels in this group. The main finding of this study showed that high IL-10 levels in patients with metabolic syndrome are associated with lower incidence of severe coronary artery disease, suggesting a protective effect through its anti-inflammatory activity, even in the presence of increased levels of other pro-inflammatory cytokines. Low IL-10 levels are associated with higher incidence of severe coronary artery disease in this population. / A S?ndrome Metab?lica ? um problema de sa?de p?blica devido a sua alta preval?ncia, pois se caracteriza por um conjunto de fatores de risco, que associados predisp?e o desenvolvimento de doen?a ateroscler?tica e suas complica??es (infarto agudo do mioc?rdio e acidente vascular cerebral) e Diabetes mellitus tipo 2. Esses fatores de risco est?o interligados por aspectos bioqu?micos, cl?nicos, metab?licos e por rea??es inflamat?rias. A inflama??o cr?nica apresenta estreita rela??o com o tecido adiposo, predispondo a uma indu??o de diversas citocinas as quais constituem um elo importante entre a resist?ncia ? insulina e a disfun??o endotelial, precursora da aterosclerose. O objetivo do presente estudo ? avaliar o perfil das citocinas em pacientes com s?ndrome metab?lica e doen?a arterial coronariana grave. Foi realizado um estudo observacional do tipo transversal controlado com abordagem descritivo-anal?tica em pacientes atendidos no Ambulat?rio Cardiometab?lico do Hospital S?o Lucas/PUCRS, Porto Alegre, Brasil. A amostra foi composta por tr?s grupos independentes. No grupo 1 (n=30) foram inclu?dos pacientes com diagn?stico de s?ndrome metab?lica sem doen?a arterial coronariana grave; no grupo 2 (n=30) pacientes com s?ndrome metab?lica por?m com doen?a arterial coronariana grave e no grupo 3, grupo controle, foram inclu?dos indiv?duos saud?veis. Foram avaliadas as atividades das citocinas pr? e anti-inflamat?rias, o estresse oxidativo, dados antropom?tricos e dados bioqu?micos. N?veis de interleucinas pr?-inflamat?rias como TNF-?, IL-6, IL-12 apresentaram-se n?veis significativamente mais elevados no grupo 1, bem como a IL-10 (anti-inflamat?ria). O principal achado deste estudo demonstrou que altos n?veis de IL-10 em pacientes com s?ndrome metab?lica est?o associados a menor incid?ncia de doen?a arterial coronariana grave. Isto sugere um efeito protetor atrav?s de sua atividade anti-inflamat?ria, mesmo na presen?a de n?veis aumentados de outras citocinas pr?-inflamat?rias. Baixos n?veis de IL-10 est?o associados a maior ocorr?ncia de doen?a arterial coronariana grave nessa popula??o.
| Identifer | oai:union.ndltd.org:IBICT/oai:tede2.pucrs.br:tede/6777 |
| Date | 30 March 2016 |
| Creators | Barcelos, Ana Let?cia Vargas |
| Contributors | Bodanese, Luiz Carlos, Oliveira, Jarbas Rodrigues de |
| Publisher | Pontif?cia Universidade Cat?lica do Rio Grande do Sul, Programa de P?s-Gradua??o em Medicina e Ci?ncias da Sa?de, PUCRS, Brasil, Faculdade de Medicina |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da PUC_RS, instname:Pontifícia Universidade Católica do Rio Grande do Sul, instacron:PUC_RS |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | 7620745074616285884, 600, 600, 600, -8624664729441623247, -969369452308786627 |
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