Cell-free DNA as an obesity biomarker

Area of Science:

• Biochemistry
• Metabolic Disorders
• Surgical Research

Background:

• Obesity is a global health issue linked to systemic inflammation.
• Cell-free DNA (cfDNA) is a potential biomarker for various health conditions, including obesity.
• Inflammation associated with obesity may influence cfDNA release into circulation.

Purpose of the Study:

• To investigate the relationship between cfDNA levels and changes in weight and body fat.
• To assess cfDNA levels six months after bariatric surgery in obese individuals.
• To explore correlations between cfDNA, body fat percentage (BFP), and C-Reactive Protein (CRP).

Main Methods:

• Thirty-eight obese subjects (BMI 43.5±6.2, BFP 46.6±4.8) underwent bariatric surgery.
• Anthropometric measurements, BFP, CRP, and cfDNA levels were assessed pre-surgery and six months post-surgery.
• Correlations between cfDNA, BFP, and CRP were analyzed.

Main Results:

• Bariatric surgery led to significant reductions in total body weight and CRP levels.
• cfDNA levels remained unchanged six months after surgery.
• A weak correlation was found between cfDNA and BFP pre-surgery; a moderate correlation existed between cfDNA and CRP.

Conclusions:

• Despite significant body fat reduction post-bariatric surgery, cfDNA levels did not change.
• cfDNA may not be a sensitive biomarker for tracking fat mass loss in obese individuals after bariatric intervention.
• Further research is needed to understand the role of cfDNA in obesity and its metabolic consequences.