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Doctoral Thesis
DOI
https://doi.org/10.11606/T.5.2018.tde-28032018-090855
Document
Author
Full name
André Luiz Dabarian
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2017
Supervisor
Committee
Mady, Charles (President)
Lopes, Heno Ferreira
Pastore, Carlos Alberto
Spósito, Andrei Carvalho
Title in Portuguese
Mediadores inflamatórios e metabólicos em pacientes com miocardiopatia dilatada idiopática e chagásica: correlação com disfunção autonômica
Keywords in Portuguese
Adiponectina
Cardiomiopatia chagásica
Cardiomiopatia idiopática
Doença de Chagas
Fator de necrose tumoral alfa
Inflamação
Insulina
Interleucina-6
Lepitina
Metabolismo
Resistência a insulina
Sistema nervoso autônomo
Abstract in Portuguese
Alterações metabólicas, inflamatórias e do sistema nervoso autônomo estão presentes em pacientes com insuficiência cardíaca. No entanto, não há até o momento, consenso de que tais alterações são decorrentes da disfunção ventricular ou da síndrome de insuficiência cardíaca. Objetivo: Avaliacão do metabolismo e atividade inflamatória em pacientes com miocardiopatia dilatada chagásica e idiopática e sua correlação com medidas de funcão do sistema nervoso autônomo. Casuística: Foram avaliados 46 pacientes divididos em três grupos: pacientes com miocardiopatia dilatada idiopática, chagásica e controle, pareados entre si de acordo com sexo e idade e índice de massa corpórea. Critérios de inclusão: miocardiopatia chagásica com sorologia positiva em dois métodos diferentes (imunofluorescência indireta e ELISA) e miocardiopatia dilatada idiopática com idade superior a 18 anos; ambos os sexos; Índice de massa corporal (IMC) entre 18,5 e 25 kg/m2 e fração de ejeção < 40% pelo método de Simpson ao ecocardiograma. Metodologia: Todos pacientes foram submetidos a medidas antropométricas: índice de massa corporal e medida da porcentagem de gordura corporal através de bioimpedância. Coletado sangue para dosagens sanguíneas de leptina, adiponectina, interleucina-6, fator de necrose tumoral, glicose, insulina, colesterol total, HDL-Colesterol, LDL-Colesterol e triglicerídeos após jejum de 12 horas e realizados: Holter de 24 horas para avaliação da função autonômica, ecocardiograma transtorácico bidimensional complementado com modo-M, Doppler pulsátil, tecidual e colorido. Resultados: Não houve diferenças entre os grupos com relação a dosagem de glicemia, colesterol total, LDL-colesterol, HDL-colesterol e triglicerídeos. Com relação à leptina e adiponectina e o índice HOMA-IR, não houve diferença entre os grupos. As dosagens de insulina foram menores no grupo chagásico em comparação ao grupo controle e de idiopático (5,4; 8,0; 9,9) respectivamente (p = 0,007). As dosagens de interleucina-6 e fator de necrose tumoral-alfa foram maiores no grupo chagásico em relação aos outros grupos. A insulina correlacionou positivamente no grupo chagásico com leptina (r = 0,579; p = 0,024) e sistema nervoso autônomo ( atividade simpática) BF/AF ( r = 0,562; p = 0,029) e BF (r = 0,562; p = 0,029) e negativamente com adiponectina (r = -0,603; p = 0,017). Na análise multivariada, apenas a adiponectina foi significante. A adição de uma unidade de adiponectina reduziu a média de insulina em 0,332. Conclusões: Os níveis de insulina foram menores nos pacientes com miocardiopatia chagásica em comparação aos pacientes com miocardiopatia dilatada idiopática e controle. Os níveis das citocinas inflamatórias (TNF-alfa e interleucina-6) foram maiores nos pacientes com miocardiopatia chagásica em comparação aos pacientes com miocardiopatia dilatada idiopática e controle. A insulina correlacionou negativamente no grupo chagásico com adiponectina
Title in English
Metabolic and inflammatory mediators in patients with idiopathic dilated cardiomyopathy and Chagas' disease: correlation with autonomic dysfunction
Keywords in English
Adiponectin
Chagas cardiomyopathy
Chagas disease
Idiopathic cardiomyopathy
Inflammation
Insulin resistance
Insulin
Interleukin-6
Leptin
Metabolism
Tumor necrosis factor-alpha, Autonomic nervous system
Abstract in English
Metabolic, inflammatory and autonomic nervous system changes are present in patients with heart failure. However, there is so far, consensus that these changes are due to ventricular dysfunction or heart failure syndrome. Objective: Evaluation of metabolism and inflammatory activity in patients with Chagas' disease and idiopathic dilated cardiomyopathy and its correlation with user function measures the autonomic nervous system. Patients: A total of 46 patients divided into three groups: patients with idiopathic dilated cardiomyopathy, Chagas and control, matched each other according to sex and age and body mass index. Inclusion criteria: serology for Chagas' disease in two different methods (indirect immunofluorescence and ELISA); idiopathic dilated cardiomyopathy; older than 18 years; both sexes; Body mass index (BMI), ie between 18.5 and 25 kg / m2 and ejection fraction < 40% by Simpson method by echocardiography. Methods: All patients underwent anthropometric measurements: body mass index and measure the percentage of body fat by bioimpedance. Blood was collected for blood leptin dosages, adiponectin, interleukin-6, tumor necrosis factor, glucose, insulin, total cholesterol, HDLcholesterol, LDL-cholesterol and triglyceride levels after fasting for 12 hours and performed: 24 hours for evaluation Holter autonomic function, two-dimensional transthoracic echocardiography complemented by M-mode, pulsed Doppler, tissue and colorful. Results: There were no differences between groups with respect to blood glucose levels, total cholesterol, LDL-cholesterol, HDLcholesterol and triglycerides. With respect to leptin and adiponectin and HOMAIR, there was no difference between groups. Insulin doses were lower in the chagasic group compared to the control group and Idiopathic: 5.4; 8.0; 9.9, respectively (p = 0.007). Dosages of interleukin-6 and tumor necrosis factoralpha were higher in the chagasic group compared to other groups. Insulin positively correlated in the chagasic group with leptin (r = 0.579; p = 0.024) and autonomic nervous system (sympathetic activity) LF / HF (r = 0.562; p = 0.029) and BF (r = 0.562; p = 0.029) and negatively with adiponectin (r = -0.603; p = 0.017). In multivariate analysis, only adiponectin was significant. The addition of an adiponectin unit reduced the average insulin 0.332. Conclusions: Insulin levels were lower in patients with Chagas' heart disease compared to patients with idiopathic dilated cardiomyopathy and control. The levels of inflammatory cytokines (TNF-alpha and interleukin-6) were higher in patients with Chagas' heart disease compared to patients with idiopathic dilated cardiomyopathy and control. Insulin negatively correlated with adiponectin in the chagasic group
 
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Publishing Date
2018-03-29
 
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