Gut microbiota of children with atopic dermatitis: Controlled study in the metropolitan region of São Paulo, Brazil.

Background: It is possible that imbalances in the composition of the gut microbiota or the relationship of the microbiota with the host may be implicated in the origin of allergy. Therefore, we studied the intestinal microbiota of children with atopic dermatitis (AD).

Methods: Cross-sectional study with 81 children aged 5-11; 23 with AD and 58 controls.

Fecal microbiota analysis of children with small intestinal bacterial overgrowth among residents of an urban slum in Brazil.

Objective: To analyze the fecal microbiota composition of children living in an urban slum in Brazil, with or without small intestinal bacterial overgrowth, and to investigate the occurrence of stunting and anemia.

Methods: A total of 100 children were studied, aged 5-11 years, from the municipality of Osasco, São Paulo. Small intestinal bacterial overgrowth was screened through hydrogen and methane breath test with lactulose.

Methane production and small intestinal bacterial overgrowth in children living in a slum.

Aim: To analyze small intestinal bacterial overgrowth in school-aged children and the relationship between hydrogen and methane production in breath tests.

Methods: This transversal study included 85 children residing in a slum and 43 children from a private school, all aged between 6 and 10 years, in Osasco, Brazil. For characterization of the groups, data regarding the socioeconomic status and basic housing sanitary conditions were collected.