Lipopolysaccharide (LPS) concentration in serum(a) and Proteobacteria abundance in faeces of different mouse groups after 14 weeks of dietary intervention (b).

<p>SD group: control mice receiving a standard diet (SD) plus placebo; HFD group: obese mice receiving a high-fat diet (HFD) plus placebo; SD+Bif group: control mice receiving SD and a daily dose of 1 x 10⁹ CFU <i>B</i>. <i>pseudocatenulatum</i> CECT 7765; HFD+Bif group: obese mice receiving HFD and a daily dose of 1 x 10⁹ CFU <i>B</i>. <i>pseudocatenulatum</i> CECT 7765 by gavage during 14 weeks. LPS concentrations are expressed as means and standard errors (error bars) of data from each mouse group (n = 8 per group) and statistically significant differences were determined by ANOVA with Bonferroni’s <i>post hoc</i> test at <i>p</i> <0.050 (a). Proteobacteria abundances as relative fractions of all 454 reads in each sample are represented as means and standard errors (error bars) of data from each mouse group (n = 8) and statistically significant differences were determined using a permutation test at a p < 0.050 (b).