Prevalence of dyslipidemia in adolescents: comparison between definitions.

Introduction: The indiscriminate use of different diagnostic criteria for the definition of dyslipidemia may result in inaccurate interpretations, which could compromise diagnosis and therefore the therapeutic and prophylactic actions to be taken.

Objective: To analyze possible differences in prevalence rates of dyslipidemia in adolescents based on three diagnostic definitions.

Methods: A cross-sectional study was conducted of a representative sample of Brazilian adolescents between 11 and 16 years of age.

[Tobacco use and plasma lipid-lipoprotein profile in adolescents].

Objective: To analyze the impact of tobacco use on plasma lipid lipoprotein profile in representative sample of adolescents.

Methods: A sample of 452 subjects (246 girls and 206 boys) 15 to 18 years old were included in the study. Each participant completed a structured and self-administered questionnaire concerning tobacco use.

[Centripetal distribution of body fat, overweight and cardiorespiratory fitness: association with insulin sensitivity and metabolic alterations].

The purpose of this paper was to investigate associations between the centripetal distribution of the body fat and serum lipid-lipoproteins, blood pressure and the index Homa-IR of insulin resistance, adjusting for indicators of overweight and cardiorespiratory fitness. Eighty-nine voluntaries were analyzed (44 men and 45 women). The centripetal distribution of the body fat was analyzed through waist circumference (CC) and the overweight by the body mass index (BMI).

[Cardiovascular risk factors in adolescents: biological and behavioral indicators].

Objective: To provide descriptive information and investigate to what extent behavioral risk factors for cardiovascular diseases are associated with biological risk factors in the young population.

Methods: The sample included 452 adolescents (246 girls and 206 boys) between 15 and 18 years of age selected in a high school in the city of Londrina, Paraná. Risk factors of a behavioral nature were analyzed as regards insufficient physical activity, excessive intake of fat and cholesterol and smoking.

Minimally modified electronegative LDL and its autoantibodies in acute and chronic coronary syndromes.

Objectives: To determine the minimally modified electronegative LDL (LDL-) and its autoantibodies in coronary syndromes.

Design And Methods: LDL(-) and its autoantibodies were determined by ELISA in patients with acute (ACS, unstable angina; AMI, acute myocardial infarction) and chronic coronary syndromes (stable angina, SA) and compared to subjects without coronary disease (controls). Results are expressed as median of LDL- (microg/mL) and anti-LDL(-) IgG (OD405 nm).