Probiotic Applications of Bacillus Species in Gastrointestinal Health
Summary
Bacillus species have emerged as robust probiotic candidates owing to their spore-forming capacity, resilience to processing and storage, and ability to survive gastric acidity and bile salts. Upon germination in the small intestine, selected strains interact with the host epithelium and microbiota through secreted enzymes, antimicrobial peptides and immunomodulatory metabolites. These interactions strengthen intestinal barrier integrity, modulate inflammatory responses and help restore microbial balance in dysbiotic states associated with conditions such as irritable bowel syndrome and inflammatory bowel disease. Their stability and functional versatility have underpinned growing interest in both dietary supplements and functional foods, offering global significance for preventive and adjunctive therapies in gastrointestinal health.
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Probiotic Applications of Bacillus Species in Gastrointestinal Health publication trend
The graph below shows the total number of articles in probiotic applications of bacillus species in gastrointestinal health across all publications each year (not limited to Nature Index journals).
Technical terms
Spore-forming bacteria: Microorganisms that produce dormant, highly resistant spores enabling survival under harsh environmental and gastrointestinal conditions.
Intestinal barrier integrity: The functional state of the gut lining that prevents translocation of pathogens and toxins while permitting nutrient absorption.
Dysbiosis: An imbalance in the composition or diversity of the gut microbiota associated with disease states.
Postbiotics: Bioactive compounds, such as metabolites or cell wall fragments, derived from probiotic microorganisms that confer health benefits.
Tight junction proteins: Transmembrane and scaffold proteins (for example, occludin and claudins) that seal spaces between epithelial cells to control permeability.
GADD45A-Wnt/β-catenin pathway: A signalling cascade in which growth arrest and DNA damage-inducible protein 45A regulates Wnt-mediated β-catenin activity, influencing cellular proliferation and barrier function.
References
- Enhancement of gut barrier integrity by a Bacillus subtilis secreted metabolite through the GADD45A‐Wnt/β‐catenin pathway. iMeta (2025).
- Bacillus As Potential Probiotics: Status, Concerns, and Future Perspectives. Frontiers in Microbiology (2017).
- Effect of Bacillus subtilis Strains on Intestinal Barrier Function and Inflammatory Response. Frontiers in Immunology (2019).
- Secretome of Intestinal Bacilli: A Natural Guard against Pathologies. Frontiers in Microbiology (2017).
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