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Temporal Stability in Chronic Wound Microbiota Is Associated With Poor Healing
Journal article   Open access   Peer reviewed

Temporal Stability in Chronic Wound Microbiota Is Associated With Poor Healing

Michael Loesche, Sue E Gardner, Lindsay Kalan, Joseph Horwinski, Qi Zheng, Brendan P Hodkinson, Amanda S Tyldsley, Carrie L Franciscus, Stephen L Hillis, Samir Mehta, …
Journal of investigative dermatology, Vol.137(1), pp.237-244
01/2017
DOI: 10.1016/j.jid.2016.08.009
PMCID: PMC5279919
PMID: 27566400
url
https://doi.org/10.1016/j.jid.2016.08.009View
Published (Version of record) Open Access

Abstract

Microbial burden of chronic wounds is believed to play an important role in impaired healing and the development of infection-related complications. However, clinical cultures have little predictive value of wound outcomes, and culture-independent studies have been limited by cross-sectional design and small cohort size. We systematically evaluated the temporal dynamics of the microbiota colonizing diabetic foot ulcers, a common and costly complication of diabetes, and its association with healing and clinical complications. Dirichlet multinomial mixture modeling, Markov chain analysis, and mixed-effect models were used to investigate shifts in the microbiota over time and their associations with healing. Here we show, to our knowledge, previously unreported temporal dynamics of the chronic wound microbiome. Microbiota community instability was associated with faster healing and improved outcomes. Diabetic foot ulcer microbiota were found to exist in one of four community types that experienced frequent and nonrandom transitions. Transition patterns and frequencies were associated with healing time. Exposure to systemic antibiotics destabilized the wound microbiota, rather than altering overall diversity or relative abundance of specific taxa. This study provides evidence that the dynamic wound microbiome is indicative of clinical outcomes and may be a valuable guide for personalized management and treatment of chronic wounds.
Diabetic Foot - physiopathology Markov Chains Prognosis Prospective Studies Cross-Sectional Studies Risk Assessment Humans Middle Aged Diabetic Foot - drug therapy Microbiota - drug effects Male Diabetic Foot - microbiology Disease Progression Anti-Bacterial Agents - therapeutic use Female Aged Wound Healing - physiology Chronic Disease Longitudinal Studies Cohort Studies

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