Which salivary components can differentiate metabolic obesity?

Area of Science:

• Biochemistry
• Human Physiology
• Metabolic Health

Background:

• Obesity is a complex global health issue.
• Metabolic obesity is characterized by increased health risks.
• Salivary biomarkers are being explored for non-invasive health assessments.

Purpose of the Study:

• To assess salivary concentrations of specific inflammatory markers and enzymes in women with varying body composition.
• To determine if salivary markers can indicate metabolic obesity.
• To explore correlations between salivary markers and obesity indicators.

Main Methods:

• A pilot study involving 10 women with obesity and 6 healthy controls.
• Enzyme-linked immunosorbent assay (ELISA) was used to measure salivary levels of TNF-α, IL-8, sICAM1, calprotectin, MMP-9, MMP-2, and TLR2.
• Statistical analysis to correlate salivary marker levels with body composition parameters (BMI, body fat percentage, VAT, WHR) and insulin levels.

Main Results:

• Women with metabolic obesity showed significantly elevated salivary IL-8, calprotectin, and MMP-2 compared to controls.
• Body Mass Index (BMI) positively correlated with salivary TNF-α, IL-8, and MMP-2.
• Body fat mass and percentage showed positive correlations with TNF-α, IL-8, and MMP-2; visceral adipose tissue (VAT) and waist-hip ratio (WHR) correlated with TNF-α and MMP-2.

Conclusions:

• Salivary concentrations of TNF-α, MMP-2, and IL-8 are positively correlated with BMI.
• These three salivary components show potential as non-invasive indicators of metabolic obesity.
• Further research with larger cohorts is recommended to validate these findings.