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. 2015 Feb 2:26:26050.
doi: 10.3402/mehd.v26.26050. eCollection 2015.

The composition of the gut microbiota throughout life, with an emphasis on early life

Affiliations

The composition of the gut microbiota throughout life, with an emphasis on early life

Juan Miguel Rodríguez et al. Microb Ecol Health Dis. .

Abstract

The intestinal microbiota has become a relevant aspect of human health. Microbial colonization runs in parallel with immune system maturation and plays a role in intestinal physiology and regulation. Increasing evidence on early microbial contact suggest that human intestinal microbiota is seeded before birth. Maternal microbiota forms the first microbial inoculum, and from birth, the microbial diversity increases and converges toward an adult-like microbiota by the end of the first 3-5 years of life. Perinatal factors such as mode of delivery, diet, genetics, and intestinal mucin glycosylation all contribute to influence microbial colonization. Once established, the composition of the gut microbiota is relatively stable throughout adult life, but can be altered as a result of bacterial infections, antibiotic treatment, lifestyle, surgical, and a long-term change in diet. Shifts in this complex microbial system have been reported to increase the risk of disease. Therefore, an adequate establishment of microbiota and its maintenance throughout life would reduce the risk of disease in early and late life. This review discusses recent studies on the early colonization and factors influencing this process which impact on health.

Keywords: diet; gut; maternal; microbiota; neonate.

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Figures

Fig. 1
Fig. 1
Factors influencing the infant gut microbiota development and the adult and elderly microbiota. The first 3 years of life represents the most critical period for dietary interventions aimed at microbiota modulation to improve child growth and development and positively affect health.
Fig. 2
Fig. 2
(a) Classification of human mucins into secreted (gel-forming and non-gel-forming) and membrane-bound mucins (MUCs). (b) The four common mucin type O-glycans (core-1-4) found in the GI.

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