The gut microbiota as a modulator of innate immunity during melioidosis (original) (raw)
Fig 2
Antibiotic pre-treated mice show increased growth and dissemination of B. pseudomallei during experimental melioidosis.
(A) Study design. (B) Before infection, the fecal microbiota of control- and antibiotic treated mice was analysed by IS-pro. Colors represent the most important bacterial phyla (purple, Actinobacteria; red, Bacteroidetes; blue, Firmicutes, Actinobacteria, Fusobacteria, and Verrucomicrobia (FAFV); yellow, Proteobacteria). Length of the interspacer regions in basepairs is indicated on the x-axis; height of the peaks indicates the presence of PCR products. Samples are pooled from eight mice per group; representative of two experiments. Control and antibiotic pre-treated mice were inoculated intranasally with 150 CFU (C-E) or 500 CFU (F-H) B. pseudomallei and sacrificed at the indicated time points. Bacterial loads in lung homogenate (C, F), blood (D, G) and liver homogenate (E, H) are depicted as scatter dot plots with a line at the median. Numbers in the boxes below (D) and (G) indicate the number of positive blood cultures for the total number of mice. White dots represent control mice, grey dots antibiotic treated mice. N = 6–8 mice per group. * p<0.05, ** p<0.01, *** p<0.001 control versus antibiotic treated.