What is it about?
This study explored whether cyanidin-3-O-glucoside (C3G), a natural anthocyanin commonly found in berries, can protect intestinal epithelial cells from the harmful effects of long-term exposure to low concentrations of antimony(III), an emerging environmental contaminant. Using differentiated Caco-2 intestinal cell monolayers, the researchers examined how C3G influences barrier integrity, oxidative stress, inflammation, endoplasmic reticulum stress, and apoptosis during chronic antimony exposure.
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Why is it important?
Antimony can leach from PET materials into food and beverages, raising concerns about chronic exposure and intestinal health. In this in vitro model, C3G helped preserve epithelial barrier function, reduced oxidative and inflammatory stress, alleviated endoplasmic reticulum stress, and decreased apoptosis. These findings contribute to the understanding of how dietary anthocyanins may interact with cellular stress pathways associated with environmental contaminants.
Perspectives
The study was conducted in vitro using Caco-2 intestinal epithelial cells, so the findings cannot be directly extrapolated to humans. Although the results support a potential protective role for C3G and suggest involvement of Nrf2-related antioxidant mechanisms, further in vivo studies are required to confirm these effects and clarify the underlying molecular pathway
Prof. Antonio Speciale
University of Messina
Read the Original
This page is a summary of: In vitro protective effects of cyanidin-3-O-glucoside against toxicity induced by continuous exposure to antimony(III) in intestinal epithelial cells, Environmental Toxicology and Pharmacology, September 2026, Elsevier,
DOI: 10.1016/j.etap.2026.105136.
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