Efficacy of Laurus nobilis L. for Tight Junction Protein Imbalance in Leaky Gut Syndrome

Author:

Shin Yelim1,Kim Jiyeon12,Song Youngcheon13,Kim Sangbum1,Kong Hyunseok34ORCID

Affiliation:

1. College of Pharmacy, Sahmyook University, Seoul 01795, Republic of Korea

2. KOSA BIO Inc., 272, Namyangju-si 12106, Republic of Korea

3. PADAM Natural Material Research Institute, Sahmyook University, Seoul 01795, Republic of Korea

4. College of Animal Resources Science, Seoul 01795, Republic of Korea

Abstract

Laurus nobilis L. (LNL) belongs to the evergreen Lauraceae family. It is native to the Mediterranean and widely distributed in the southern United States, Europe, and the Middle East. LNL is rich in active ingredients of the sesquiterpene lactone series and has been reported to have antioxidant, anti-inflammatory, and anticancer effects. And parthenolide, known as a sesquiterpene lactone-based compound, inhibits the activation of lipopolysaccharide-binding protein (LBP), which is a major trigger for leaky gut syndrome. However, the effectiveness of LNL in improving the state of increased intestinal permeability has not yet been reported. Therefore, we demonstrated the efficacy of LNL, which is known to be rich in parthenolide, in improving intestinal permeability induced by IL-13. We investigated the improvement in permeability and analyzed major tight junction proteins (TJs), permeability-related mechanisms, weight and disease activity indices, and corresponding cytokine mechanisms. LNL maintained TJs homeostasis and clinical improvement by reducing increased claudin-2 through the inhibition of IL-13/STAT6 activation in TJ-damaged conditions. These results are expected to be effective in preventing leaky gut syndrome through the TJ balance and to further improve intestinal-related diseases, such as inflammatory bowel disease.

Publisher

MDPI AG

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