Oxidized and electronegative low-density lipoprotein as potential biomarkers of cardiovascular risk in obese adolescents

Author(s)

Pruper de Freitas, Maria Camila ^[1] ; Estevez Fernandez, Diana Gabriela ^[2] ; Cohen, Danielle ^[2] ; Figueiredo-Neto, Antonio Martins ^[3] ; Maranhao, Raul Cavalcante ^{[4, 5]} ; Teixeira Damasceno, Nagila Raquel ^{[1, 2]}

Affiliation

^[1] Univ Sao Paulo, Fac Saude Publ, Dept Nutr, Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Fac Ciencias Farmaceut, Programa Interunidades Nutr Humana Aplicada, Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Inst Fis, Sao Paulo, SP - Brazil

^[4] Univ Sao Paulo, Fac Ciencias Farmaceut, Dept Anal Clin, Sao Paulo, SP - Brazil

^[5] Univ Sao Paulo, Fac Med, Hosp Clin, Lab Metab Lipides, Inst Coracao, Sao Paulo, SP - Brazil

• Document type: Journal article
• Source: Clinics; v. 73, 2018.
• Web of Science Citations: 1

Abstract

OBJECTIVES: To evaluate biomarkers associated with early cardiometabolic risk in obese adolescents. METHODS: This cross-sectional study included 137 adolescents of both sexes aged 10 to 19 years divided into a normal weight group (NW) (n=69) and an obese group (OB) (n=68). RESULTS: As expected, obesity showed positive associations with homeostatic model assessment for insulin resistance (HOMA-IR), triacylglycerol, insulin, plasma levels of non-esterified fatty acids, and cholesterol ester transfer protein activity and negative associations with plasma antioxidant levels. Plasma oxidized low-density lipoprotein (oxLDL) and electronegative low-density lipoprotein [LDL(-)] levels were significantly higher in the OB group. Higher tertiles of oxLDL were associated with increased values of body mass index; waist circumference; fatty mass percentage (%FM); and the atherogenic lipids non-high-density-lipoprotein cholesterol (non-HDL-C), low-density lipoprotein cholesterol (LDL-C), apolipoprotein B and triacylglycerol. Higher tertiles of LDL(-) were robustly associated with body mass index and waist circumference. Logistic regression models (odds ratios) confirmed that increased values of lipids and apolipoprotein B were associated with increased risk of oxLDL. For LDL(-), these associations were not significant, suggesting that another mechanism is involved in generating this particle in obese adolescents. CONCLUSIONS: Obese adolescents showed increased plasma LDL(-) and oxLDL, and obese girls had more LDL(-) than obese boys. Therefore, oxLDL is strongly and independently associated with classical cardiovascular risk factors, while increased levels of LDL(-) were influenced by body mass index, waist circumference and demographic parameters in obese adolescents. (AU)

• FAPESP's process: 11/13616-4 - Optical and structural properties of elastomers and complex fluids of biological interest
• Grantee: Antonio Martins Figueiredo Neto
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 11/12523-2 - Physical and chemical properties of LDL and HDL, cardiometabolic and oxidative markers can be modulate by consumption of ômega-3, ômega-6 e ômega-9 in adult subjects?
• Grantee: Nágila Raquel Teixeira Damasceno
• Support Opportunities: Regular Research Grants
• FAPESP's process: 15/06565-5 - Development of High Density Lipoprotein (HDL)Functionality Score and Association with Cardiovascular Risk Prediction Algorithms and Clinical Outcomes in Brazilian Subjects
• Grantee: Maria Camila Pruper de Freitas
• Support Opportunities: Scholarships in Brazil - Doctorate