Bifidobacterium population

The Bifidobacterium population refers collectively to the community of Bifidobacterium species inhabiting the gastrointestinal tract, predominantly in the large intestine of mammals, including humans. These are Gram-positive, anaerobic, non-spore-forming bacteria classified in the phylum Actinobacteria. They are among the earliest and dominant colonizers in the guts of breastfed infants and play beneficial roles in host health, such as modulating immune responses, producing health-promoting metabolites (including acetate and lactate), contributing to digestion and nutrient absorption, and protecting against pathogenic microbes. Bifidobacterium populations decline with age but remain important members of adult gut microbiota. The "population" concept is highly variable between individuals and over time, and the term itself does not denote a specific molecule, enzyme, or receptor but a group of related microorganisms. In summary, "Bifidobacterium population" is not a specific molecular target, but rather refers to the aggregate of bacterial species and strains from the Bifidobacterium genus present in a given biological niche, most commonly the human gut.

Other names

BifidobacteriaBifidobacterium spp.gut Bifidobacteriaintestinal Bifidobacteria population

Colonization resistance (compete with pathogens for space/resources); Immune modulation (enhancing regulatory T cells, decreasing inflammation); Metabolite production (acetate, lactate, butyrate)