Copper biomarkers and their relationship with dyslipidemia in women with obesity

Adipose tissue dysfunction influences the development of dyslipidemias associated with obesity, however, the mechanisms are still unclear. In this sense, the literature highlights the role of copper in cholesterol synthesis, contributing to the increase in concentrations of this lipid fraction and consequently to the manifestation of dyslipidemia. The objective of the study was to investigate the relationship between copper parameters and lipid profile markers in women with obesity. This is a cross-sectional study involving women aged 20 to 50 years divided into a case group (BMI ≥ 35 kg/m²) and a control group (BMI between 18.5 and 24.9 kg/m²). Copper concentrations in plasma and erythrocytes were determined by inductively coupled plasma optical emission spectrophotometry and ceruloplasmin activity by spectrophotometry. The lipid fractions were analyzed according to the enzymatic colorimetric method, using an automatic biochemical analyzer. Participants with obesity had elevated concentrations of copper in plasma and reduced concentrations in erythrocytes compared to the control group, but there was no significant difference in ceruloplasmin activity between the groups. The research does not identify a correlation between copper parameters and serum concentrations of lipid fractions, which does not allow inferring the role of copper in the manifestation of dyslipidemia in obesity.