Profile of the Gut Microbiome Containing Carbapenem-Resistant Enterobacteriaceae in ICU Patients

Sindi, Anees; Alsayed, Sarah M.; Abushoshah, Ibrahim; Bokhary, Diyaa H; Tashkandy, Nisreen

doi:10.3390/microorganisms10071309

Cited by 2 publications

(1 citation statement)

References 53 publications

(54 reference statements)

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“…Recent studies demonstrated that CRE carriers had significantly higher number of Proteobacteria and lower prevalence of Firmicutes and Bacteroidetes than CRE non-carriers and healthy controls ( Korach-Rechtman et al, 2020 ; Sindi et al, 2022 ). The results of our study revealed findings that are aligned with those previous reports.…”

Section: Discussionmentioning

confidence: 99%

Gut microbiota alterations in critically Ill patients with carbapenem-resistant Enterobacteriaceae colonization: A clinical analysis

Baek

Kim

et al. 2023

Front. Microbiol.

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BackgroundCarbapenem-resistant Enterobacteriaceae (CRE) are an emerging concern for global health and are associated with high morbidity and mortality in critically ill patients. Risk factors for CRE acquisition include broad-spectrum antibiotic use and microbiota dysbiosis in critically ill patients. Therefore, we evaluated the alteration of the intestinal microbiota associated with CRE colonization in critically ill patients.MethodsFecal samples of 41 patients who were diagnosed with septic shock or respiratory failure were collected after their admission to the intensive care unit (ICU). The gut microbiota profile determined using 16S rRNA gene sequencing and quantitative measurement of fecal short-chain fatty acids were evaluated in CRE-positive (n = 9) and CRE negative (n = 32) patients. The analysis of bacterial metabolic abundance to identify an association between CRE acquisition and metabolic pathway was performed.ResultsCRE carriers showed a significantly increased proportion of the phyla Proteobacteria and decreased numbers of the phyla Bacteroidetes as compared to the CRE non-carriers. Linear discriminant analysis (LDA) with linear discriminant effect size showed that the genera Erwinia, Citrobacter, Klebsiella, Cronobacter, Kluyvera, Dysgomonas, Pantoea, and Alistipes had an upper 2 LDA score in CRE carriers. The alpha-diversity indices were significantly decreased in CRE carriers, and beta-diversity analysis demonstrated that the two groups were clustered significantly apart. Among short-chain fatty acids, the levels of isobutyric acid and valeric acid were significantly decreased in CRE carriers. Furthermore, the PICRUSt-predicted metabolic pathways revealed significant differences in five features, including ATP-binding cassette transporters, phosphotransferase systems, sphingolipid metabolism, other glycan degradation, and microbial metabolism, in diverse environments between the two groups.ConclusionCritically ill patients with CRE have a distinctive gut microbiota composition and community structure, altered short-chain fatty acid production and changes in the metabolic pathways. Further studies are needed to determine whether amino acids supplementation improves microbiota dysbiosis in patients with CRE.

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Section: Discussionmentioning

confidence: 99%