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• W2207265529 abstract "Bacteroides sp. are dominant constituents of the human and animal intestinal microbiota require porphyrins (i.e., protoporphyrin IX or iron-charged heme) for normal growth. The highly stimulatory effect of porphyrins on Bacteroides growth lead us to propose their use as a potential determinant of bacterial colonization. However, showing a role for porphryins would require sensitive detection methods that work in complex samples such as feces. We devised a highly sensitive semi-quantitative porphyrin detection method (detection limit 1-4 ng heme or PPIX) that can be used to assay pure or complex biological samples, based on Bacteroides growth stimulation. The test revealed that healthy colonized or non-colonized murine and human hosts provide porphyrins in feces, which stimulate Bacteroides growth. In addition, a common microbiota constituent, Escherichia coli, is shown to be a porphyrin donor, suggesting a novel basis for intestinal bacterial interactions. A highly sensitive method to detect porphyrins based on bacterial growth is devised and is functional in complex biological samples. Host feces, independently of their microbiota, and E. coli, which are present in the intestine, are shown to be porphryin donors. The role of porphyrins as key bioactive molecules can now be assessed for their impact on Bacteroides and other bacterial populations in the gut." @default.
• W2207265529 created "2016-06-24" @default.
• W2207265529 creator A5055793880 @default.
• W2207265529 creator A5056764783 @default.
• W2207265529 date "2015-12-01" @default.
• W2207265529 modified "2023-10-10" @default.
• W2207265529 title "A sensitive bacterial-growth-based test reveals how intestinal Bacteroides meet their porphyrin requirement" @default.
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• W2207265529 doi "https://doi.org/10.1186/s12866-015-0616-0" @default.
• W2207265529 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/4696147" @default.
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