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Doctoral Thesis
DOI
10.11606/T.5.2016.tde-05102016-124645
Document
Author
Full name
Kristopherson Lustosa Augusto
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Pasoto, Sandra Gofinet (President)
Duarte, Alberto Jose da Silva
Latorre, Luiz Carlos
Pinheiro, Marcelo de Medeiros
Pinto, Ana Lúcia de Sá
Title in Portuguese
Estudo da síndrome metabólica e do perfil de adipocitocinas na síndrome de Sjögren primária: relevância clínica e correlações com citocinas inflamatórias
Keywords in Portuguese
Adipocinas
Doenças cardiovasculares
Fatores de risco
Hipertensão
Interleucina-1 beta
Resistência à insulina
Síndrome de Sjögren
Síndrome X metabólica
Abstract in Portuguese
A Síndrome Metabólica (SM) tem sido descrita nas doenças autoimunes. No entanto, existem poucos dados na literatura sobre a síndrome metabólica e o perfil de adipocitocinas na síndrome de Sjögren primária (SSp). Setenta e um pacientes do sexo feminino com SSp com idades entre 18-65 anos (Critérios do Consenso Euramericano, 2002) e 71 mulheres saudáveis pareadas por idade e raça foram incluídas neste estudo caso-controle. Os dados clínicos foram coletados por meio de um protocolo padronizado. Os níveis sanguíneos de glicose, colesterol total, LDL-colesterol (LDL-C), HDL-colesterol (HDL-C), triglicérides, interleucina-1 beta (IL-1 beta)/ IL-6, fator de ativação das células B (BAFF), insulina e leptina/ adiponectina/ visfatina/ resistina foram determinados. Os pacientes e os controles foram comparáveis com relação ao índice de massa corporal (IMC), tabagismo, sedentarismo e menopausa (p > 0,05). A síndrome metabólica (39,4 vs. 16,9%, p= 0,005), hipertensão (p= 0,004) e a dislipidemia (p= 0,002) foram mais frequentes nos pacientes do que nos controles. Os níveis de IL-1 beta, IL-6, BAFF, resistina e adiponectina foram mais elevados nos pacientes do que nos controles (p < 0,05). Os pacientes com SSp com SM (n= 28) apresentaram maiores valores de IMC, circunferência abdominal, colesterol total, LDL-C, triglicérides, insulina, leptina e HOMA-IR, além de maiores taxas de hipertensão e diabetes do que os pacientes com SSp sem SM (n= 43) (p < 0,05). O uso atual e/ou prévio de prednisona (75,0 vs. 62,8%, p = 0,313), a dose atual (3,0 ± 4,5 vs. 1,6 ± 3,2 mg/dia, p= 0,299) e a dose cumulativa de prednisona (p= 0,495) foram semelhantes em ambos os grupos. Entretanto, os níveis de IL-1 beta foram maiores em pacientes com SM do que nos pacientes sem SM (p= 0,012). Este achado foi confirmado por análise multivariada (p= 0,048) com ajustes para idade, etnia, uso de prednisona, doses cumulativas e atuais de prednisona e ainda duração do uso da mesma. Nós identificamos elevada frequência de síndrome metabólica e um perfil anormal de adipocitocinas em pacientes com SSp. A associação da síndrome metabólica com elevados níveis de IL-1 beta sugere que a inflamação possa desempenhar um papel importante na sua patogênese
Title in English
Metabolic syndrome in Sjögren's syndrome patients: a relevant concern for clinical monitoring
Keywords in English
Adipokines
Cardiovascular diseases
Hypertension
Insulin resistance
Interleukin-1 beta
Metabolic syndrome
Risk factors
Sjögren's syndrome
Abstract in English
The metabolic syndrome (MetS) has been described in autoimmune diseases. However, there are few data in the literature on metabolic syndrome and adipocytokines profile in primary Sjögren's syndrome (pSS). Seventy-one female patients with pSS aged 18-65 years (criteria of the American European Consensus, 2002) and 71 healthy women matched for age and race were included in this case-control study. Clinical data were collected using a standardized protocol. Blood levels of glucose, total cholesterol, LDL-cholesterol (LDL-C), HDL-cholesterol (HDL-C), triglycerides, interleukin-1 beta (IL-1 beta)/ IL-6, B-cell activating factor (BAFF), insulin and leptin/ adiponectin/ visfatin/ resistin were determined. Patients and controls were comparable with respect to body mass index (BMI), smoking, sedentary lifestyle and menopause (p > 0.05). The metabolic syndrome (39.4 vs. 16.9%, p= 0.005), hypertension (p= 0.004) and dyslipidemia (p= 0.002) were more frequent in patients than in controls. IL-1 beta, IL-6, BAFF, resistin and adiponectin levels were higher in patients than in controls (p < 0.05). pSS patients with MetS (n= 28) had higher BMI, waist circumference, total cholesterol, LDL-C, triglycerides, insulin, leptin and HOMA-IR, as well as higher rates of hypertension and diabetes than pSS patients without MetS (n= 43) (p < 0.05). The current and/or prior use of prednisone (75.0 vs. 62.8%, p= 0.313), the current dose (3.0 ± 4.5 vs. 1.6 ± 3.2 mg/day p= 0.299) and cumulative dose of prednisone (p= 0.495) were similar in both groups. However, IL-1 beta levels were higher in pSS patients with MetS than in pSS patients without MetS (p= 0.012). This finding was confirmed by multivariate analysis (p= 0.048) with adjustments for age, ethnicity, use of prednisone, current and cumulative doses of prednisone and even duration of use. We have identified high frequency of metabolic syndrome and an abnormal profile of adipocytokines in pSS patients. The association of metabolic syndrome with elevated IL-1 beta levels suggests that inflammation may play an important role in its pathogenesis
 
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Publishing Date
2016-10-06
 
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