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http://dx.doi.org/10.15429/jkomor.2019.19.2.97

Airway Microbiota in Stroke Patients with Tracheostomy: A Pilot Study  

Seong, Eunhak (Department of Rehabilitation Medicine of Korean Medicine, College of Korean Medicine, Dongguk University)
Choi, Yura (Department of Rehabilitation Medicine of Korean Medicine, College of Korean Medicine, Dongguk University)
Lim, Sookyoung (Department of Rehabilitation Medicine of Korean Medicine, College of Korean Medicine, Dongguk University)
Lee, Myeongjong (Department of Rehabilitation Medicine of Korean Medicine, College of Korean Medicine, Dongguk University)
Nam, Youngdo (Research Group of Gut Microbiome, Korea Food Research Institute)
Song, Eunji (Research Group of Gut Microbiome, Korea Food Research Institute)
Kim, Hojun (Department of Rehabilitation Medicine of Korean Medicine, College of Korean Medicine, Dongguk University)
Publication Information
Journal of Korean Medicine for Obesity Research / v.19, no.2, 2019 , pp. 97-105 More about this Journal
Abstract
Objectives: We investigated differences between the tracheostomized and the non-tracheostomized stroke patients through microbiological analysis for the purpose of preliminary explorations of full-scale clinical research in the future. Methods: We collected tracheal aspirates samples from 5 stroke patients with tracheostomy and expectorated sputum samples from 5 stroke patients without tracheostomy. Genomic DNA from sputum samples was isolated using QIAamp DNA mini kit. The sequences were processed using Quantitative Insights into Microbial Ecology 1.9.0. Alpha-diversity was calculated using the Chao1 estimator. Beta-diversity was analyzed by UniFrac-based principal coordinates analysis (PCoA). To confirm taxa with different abundance among the groups, linear discriminant analysis effect size analysis was performed. Results: Although alpha-diversity value of the tracheostomized group was higher than that of the non-tracheostomized group, there was no statistically significant difference. In PCoA, clear separation was seen between clusters of the tracheostomized group and that of the non-tracheostomized group. In both groups, Bacteroidetes, Proteobacteria, Fusobacteria, Firmicutes, Actinobacteria were identified as dominant in phylum level. In particular, relative richness of Proteobacteria was found to be 31% more in the tracheotomized group (36.6%) than the non-tracheostomized group (5.6%)(P<0.05). In genus level, Neisseria (24%), Prevotella (17%), Streptococcus (13%), Fusobacteria (11%), Porphyromonas (7%) were identified as dominant in the tracheostomized group. In the non-tracheostomized group, Prevotella (38%), Veillonella (20%), Neisseria (9%) were genera that found to be dominant. Conclusions: It is meaningful in that the tracheostomized group has been identified a higher rate of microbiotas known as pathogenic in respiratory diseases compared to the non-tracheostomized group, confirming the possibility that the risk of opportunity infection may be higher.
Keywords
Stroke; Tracheostomy; Microbiota;
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