Loading
Life sciences · Journal article
Inflammopharmacology · August 10, 2026
Early or partial results. Treat as a signal, not a conclusion.
This is an early-stage experimental study demonstrating that chestnut leaf extract and its constituent castalagin suppress NF-κB pathway gene expression, reduce H. pylori colonisation, and decrease gastric inflammation and immune infiltration in murine models and gastric organoids. No quantified effect sizes, confidence intervals, or p-values are provided, and findings are limited to preclinical systems with no human validation.
Experimental study: in vitro murine gastric organoid model and in vivo murine infection model. Murine gastric organoids derived from mice and laboratory mice experimentally infected with H. pylori; no human subjects.. Intervention: Chestnut (Castanea sativa Mill.) leaf extract standardized to contain castalagin, and pure castalagin compound.
NF-κB pathway genes, including CXCR2 and CXCR3 ligands, were suppressed by both chestnut extract and castalagin Both extract and pure compound strongly suppressed H. pylori colonisation in mice Gastric inflammatory mediators were suppressed in mice
Safety was not reported in the material analysed. Check the source before drawing any conclusion about harm.
The source did not state who this applies to in practice.
Early experimental work combining in vitro organoid and murine in vivo models with no human clinical data, surrogate endpoints (gene expression, immune infiltration), and no quantified effect sizes reported.
As stated by the source record.
Graded across the dimensions that decide whether you should act, each from what the source actually supports. There is no single score, and where a dimension was not assessed it says so.
What is missing. This record has no reported figures. That is a gap in the analysis, not a judgement about the study.
BACKGROUND: Helicobacter pylori is a bacterium that has been identified as a causative agent in the development of chronic gastritis, peptic ulcers, and gastric cancer. Current eradication therapies, based on antibiotic combination, are suffering from lack of patient compliance and primary antibiotic resistance. The traditional use and the scientific literature both report the gastroprotective role of natural extracts containing ellagitannins, suggesting an intriguing hypothesis about the potential impact on H. pylori-related gastritis. Anti-inflammatory and antibacterial effects of Castanea sativa Mill. extract standardized to contain castalagin have been previously demonstrated in human gastric epithelial cells. AIM: This experimental work aimed at investigating the role of a food grade chestnut leaf extract in complex models of H. pylori infection. METHODS: The biological properties of chestnut leaf extract and castalagin have been validated, firstly in a novel murine gastric organoid cell model of H. pylori infection, and, secondly, in an in vivo infection model. RESULTS: Some NF-κB pathway genes, including ligands for CXCR2 and CXCR3 receptors, were found to be suppressed by both the extract and the pure compound. Furthermore, both strongly suppressed H. pylori colonisation and gastric inflammatory mediators in mice. The infiltration of immune cells, mainly neutrophils and monocytes, was also reduced. CONCLUSION: The results of this work demonstrate the significant potential for the translation of innovative food supplements as co-adjuvants in the prevention and/or treatment of H. pylori-induced gastritis.
Taken from the source record, never inferred. Follow any of these and new work involving them reaches your briefing.