Researchers report that E. coli isolated from fecal samples of six young children with cystic fibrosis (CF) grew faster than E. coli isolated from two healthy controls when glycerol, a major component of dietary fat, was the only available carbon source, despite the strains from different CF patients being unrelated to each other; the finding suggests that the increased intestinal fat in CF patients might select for specific organisms within the microbiome.
Article #17-14373: "Adaptation of commensal proliferating Escherichia coli to the intestinal tract of young children with cystic fibrosis," by Susana Matamorous et al.
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Proceedings of the National Academy of Sciences