Correlations between Chondroitin Sulfate Physicochemical Properties and its in-vitro Absorption and Anti-inflammatory Activity

TL;DR

This study explores how the physicochemical properties of chondroitin sulfate influence its absorption and anti-inflammatory effects in vitro, providing insights for better screening of therapeutic samples.

Contribution

It identifies correlations between molecular weight, sulfation patterns, and biological activities of chondroitin sulfate, aiding in sample evaluation.

Findings

Absorption correlates with chondroitin-6-sulfate percentage.

Anti-inflammatory activity weakly related to molecular weight.

Physicochemical properties can predict biological activity.

Abstract

Here, we investigated the influence of physicochemical characteristics of chondroitin sulfate (CS) on its in vitro absorption and anti-inflammatory activity. We used eight different synthetic and natural CS samples with a range of molecular weights (7-35 kDa) and sulfation patterns. Our studies indicate that the absorption of CS is moderately correlated to percentage of chondroitin-6-sulfate while the anti-inflammatory activity may be weakly related to the molecular weight and the amount of total sulfation in the samples. Our in vitro studies could provide helpful screening tools for quick and effective evaluation of CS samples as a preliminary step towards in vivo studies.