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Characterization of the Ileal Microbiota in Rejecting and Nonrejecting Recipients of Small Bowel Transplants.
MedLine Citation:
PMID:  22152019     Owner:  NLM     Status:  Publisher    
Small bowel transplantation can be a life-preserving procedure for patients with irreversible intestinal failure. Allograft rejection remains a major source of morbidity and mortality and its accurate diagnosis and treatment are critical. In this study, we used pyrosequencing of 16S ribosomal RNA gene tags to compare the composition of the ileal microbiota present during nonrejection, prerejection and active rejection states in small bowel transplant patients. During episodes of rejection, the proportions of phylum Firmicutes (p < 0.001) and the order Lactobacillales (p < 0.01) were significantly decreased, while those of the phylum Proteobacteria, especially the family Enterobacteriaceae, were significantly increased (p < 0.005). Receiver-operating characteristic analysis revealed that relative proportions of several bacterial taxa in ileal effluents and especially Firmicutes, could be used to discriminate between nonrejection and active rejection. In conclusion, the findings obtained during this study suggest that small bowel transplant rejection is associated with changes in the microbial populations in ileal effluents and support microbiota profiling as a potential diagnostic biomarker of rejection. Future studies should investigate if the dysbiosis that we observed is a cause or a consequence of the rejection process.
P L Oh; I Martínez; Y Sun; J Walter; D A Peterson; D F Mercer
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-7
Journal Detail:
Title:  American journal of transplantation : official journal of the American Society of Transplantation and the American Society of Transplant Surgeons     Volume:  -     ISSN:  1600-6143     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-13     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100968638     Medline TA:  Am J Transplant     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 American Society of Transplantation and the American Society of Transplant Surgeons.
Department of Food Science and Technology, University of Nebraska-Lincoln, Lincoln, NE Department of Surgery, University of Nebraska Medical Center, Omaha, NE Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD.
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