Prebiotic Modulation of Gut Microbiota

Prebiotic modulation of the gut microbiota involves the deliberate administration of non‐digestible dietary compounds to enrich beneficial microbial communities and promote host health. Central to this process is the selective fermentation of substrates such as lactulose, galactooligosaccharides and inulin by saccharolytic bacteria in the distal intestine. Resulting metabolic end-products, notably short-chain fatty acids, contribute to epithelial integrity, immune regulation and systemic metabolic homeostasis. Advances in sequencing and metabolomic profiling have revealed how prebiotic interventions reshape microbial diversity, enhance populations of Bifidobacterium and Lactobacillus, and suppress opportunistic pathogens. Beyond gastrointestinal applications, emerging evidence supports a role for prebiotics in bone health, glycaemic control and inflammatory disease prevention. Recent trials in human cohorts and experimental models have begun to define optimal doses, temporal dynamics of microbial shifts and the interplay between microbial metabolites and host signalling pathways. As the global burden of metabolic and inflammatory disorders escalates, harnessing prebiotic strategies represents a safe, cost-effective approach to modulate the gut ecosystem and reinforce barrier function across diverse populations.

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Prebiotic Modulation of Gut Microbiota publication trend

The graph below shows the total number of articles in prebiotic modulation of gut microbiota across all publications each year (not limited to Nature Index journals).

Technical terms

Prebiotic: A non-digestible dietary compound selectively utilised by gut microorganisms to confer health benefits on the host.

Short-chain fatty acids (SCFAs): Organic acids (e.g., acetate, propionate, butyrate) produced by microbial fermentation that support mucosal health and immune function.

Bifidobacterium: A genus of saccharolytic bacteria commonly enriched by prebiotics and linked to anti-inflammatory effects.

16S rRNA sequencing: A molecular technique for profiling bacterial community composition by targeting the 16S ribosomal RNA gene.

Alpha diversity: A measure of microbial richness and evenness within a single sample, indicating community complexity.

References

1. Lactulose Ingestion Induces a Rapid Increase in Genus Bifidobacterium in Healthy Japanese: A Randomised, Double-Blind, Placebo-Controlled Crossover Trial. Microorganisms (2022).
2. The potential role of lactulose pharmacotherapy in the treatment and prevention of diabetes. Frontiers in Endocrinology (2022).
3. Metabolic profiling of probiotic strain Lactobacillus delbrueckii subsp. bulgaricus L14 cultivated in presence of prebiotic oligosaccharides and polysaccharides in simulating in vitro gastrointestinal tract system. Biotechnology & Biotechnological Equipment (2023).