Methyl-esterification, degree of polymerization and ∆4,5-unsaturation of galacturonic acid oligosaccharides as determinants of immunomodulation.

In recent years, immunomodulation by pectin and pectin-derived galacturonic acid oligosaccharides has been the subject of wide-spread scientific research due to the potential of different pectin structures as bioactive biomolecules. Yet, gaps remain in understanding the structure-dependent immunomodulation of galacturonic acid. This study describes in vitro immunomodulatory effects of well-characterized galacturonic acid oligosaccharides.

Solid-state fermentation of green lentils by leads to formation of distinct peptides that are absorbable and enhances DPP-IV inhibitory activity in an intestinal Caco-2 cell model.

Food-derived bioactive compounds mimicking the effects of incretin therapies offer promising opportunities for combination therapies with functional foods, where food matrix interactions, gastrointestinal enzyme activity, and bioactivity should be key considerations. In this study, green lentils were solid-state fermented with ATCC8014, digested and exposed to brush border enzymes of a Caco-2 cell monolayer. Intestinal absorption of peptides and DPP-IV inhibitory activity were then investigated.

Rice-derived arabinoxylan fibers are particle size-dependent inducers of trained immunity in a human macrophage-intestinal epithelial cell co-culture model.

Arabinoxylans have been identified for a wide range of purported health-promoting applications, primarily attributed to its immunomodulatory effects. Previously, we have reported the ability of arabinoxylans to induce non-specific memory in innate immune cells, commonly referred to as "trained innate immunity". In the present study, we investigated the effect of particle size on innate immune training and resilience in primary human macrophages as well as in a more physiologically relevant macrophage-intestinal epithelial cell co-culture model.

IL-33 Expression Is Lower in Current Smokers at both Transcriptomic and Protein Levels.

IL-33 is a proinflammatory cytokine thought to play a role in the pathogenesis of asthma and chronic obstructive pulmonary disease (COPD). A recent clinical trial using an anti-IL-33 antibody showed a reduction in exacerbation and improved lung function in ex-smokers but not current smokers with COPD. This study aimed to understand the effects of smoking status on IL-33.