A Multiomics Approach to Identify Host-microbe Alterations Associated with Infection Severity in Diabetic Foot Infections: a Pilot Study

Overview

Journal NPJ Biofilms Microbiomes

Date 2021 Mar 23

PMID 33753735

Citations 24

Authors

Michael Radzieta

Fatemah Sadeghpour-Heravi

Timothy J Peters

Honghua Hu

Karen Vickery

Thomas Jeffries

Hugh G Dickson

Saskia Schwarzer

Slade O Jensen

Matthew Malone

Affiliations

Soon will be listed here.

Abstract

Diabetic foot infections (DFIs) are a major cause of hospitalization and can lead to lower extremity amputation. In this pilot study, we used a multiomics approach to explore the host-microbe complex within DFIs. We observed minimal differences in the overall microbial composition between PEDIS infection severities, however Staphylococcus aureus and Streptococcus genera were abundant and highly active in most mild to moderate DFIs. Further, we identified the significant enrichment of several virulence factors associated with infection pathogenicity belonging to both Staphylococcus aureus and Streptococcus. In severe DFIs, patients demonstrated a greater microbial diversity and differential gene expression demonstrated the enrichment of multispecies virulence genes suggestive of a complex polymicrobial infection. The host response in patients with severe DFIs was also significantly different as compared to mild to moderate DFIs. This was attributed to the enrichment of host genes associated with inflammation, acute phase response, cell stress and broad immune-related responses, while those associated with wound healing and myogenesis were significantly depleted.

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