Gut microbiota composition and its effects on obesity and insulin resistance.
OBJECTIVE
Rising evidence suggest that variation in the gut microbiome at gene and species levels defines subsets of individuals who have increased risk of obesity-related metabolic disorders, including insulin resistance and type 2 diabetes, which is influenced by diet and genetic profile of the host. Our goal in this review is gathering the newest findings concerning gut microbiota composition and effects on host's metabolism.


RESULTS
Dietary changes have been shown as the most prominent shaper of gut microbiota composition, reflecting major phenotypes, which can also be transmitted to other individuals, in spite of genetic variances. Gut microbiota composition has also been presented as diversity, which may have important implications in metabolite production and consequent interference with inflammatory activation, insulin resistance, and obesity.


CONCLUSIONS
Specific approaches made it possible to comprehend some of the interactions between certain bacterial strains and their host, and how their metabolites may interfere with host's cell signaling, changing its metabolic profile. Herein, we discuss some of the mechanisms by which alterations in the gut microbiota composition may contribute to the pathophysiology of obesity and its related comorbidities.
Department of Internal Medicine, State University of Campinas, Campinas, Sau Paulo, Brazil.
Andrea M
AM
Caricilli
Mario J A
MJ
Saad
D001647:Bile Acids and Salts / Q000378:metabolism; D003924:Diabetes Mellitus, Type 2 / Q000382:microbiology; D041981:Gastrointestinal Tract / Q000382:microbiology*; D006801:Humans; D007333:Insulin Resistance; D064307:Microbiota; D009765:Obesity / Q000382:microbiology*
D001647:Bile Acids and Salts