Summary
The proposed study would identify microbial communities associated with flare ups and remissions of systemic malodor.
Background
Human odorprints, mostly owing to the microbiome, have proven their value as biomarkers of health
and environmental exposures.
In recent years, microbial networks responsible for localized malodors (e.g., halitosis [1,2] and axillary
odor [3,4]) have been mapped by using next generation sequencing approaches.
Intestinal microbes responsible for psychologically debilitating systemic malodor (whole-body and
extraoral halitosis), however, remain to be identified. Even a relatively straightforward disorder of
choline metabolism trimethylaminuria (TMAU) is thought to exhibit complex host-gene microbiome
interactions [5] and has not been sufficiently studied.
Mapping gut microbiome is needed to understand human metabolic disfunction, make proper dietary
recommendations and develop targeted treatments such as microbial therapies [6-8]. Our preliminary
analysis of culture-, PCR- and 16S-RNA-based data found several Operational Taxonomic Units (OTUs)
potentially linked to systemic malodor. Proposed controlled pilot study will provide a more
comprehensive evaluation and, combined with our prior data [9-12], will help to develop new therapies and treatments.
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