| Gut microbial colonisation in premature neonates predicts neonatal sepsis. | |
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MedLine Citation:
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PMID: 22562869 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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BackgroundNeonatal sepsis due to intestinal bacterial translocation is a major cause of morbidity and mortality. Understanding microbial colonisation of the gut in prematurity may predict risk of sepsis to guide future strategies to manipulate the microbiome.MethodsProspective longitudinal study of premature infants. Stool samples were obtained weekly. DNA was extracted and the V6 hypervariable region of 16S rRNA was amplified followed by high throughput pyrosequencing, comparing subjects with and without sepsis.ResultsSix neonates were 24-27 weeks gestation at birth and had 18 samples analysed. Two subjects had no sepsis during the study period, two developed late-onset culture-positive sepsis and two had culture-negative systemic inflammation. 324 350 sequences were obtained. The meconium was not sterile and had predominance of Lactobacillus, Staphylococcus and Enterobacteriales. Overall, infants who developed sepsis began life with low microbial diversity, and acquired a predominance of Staphylococcus, while healthy infants had more diversity and predominance of Clostridium, Klebsiella and Veillonella.ConclusionsIn very low birth weight infants, the authors found that meconium is not sterile and is less diverse from birth in infants who will develop late-onset sepsis. Empiric, prolonged antibiotics profoundly decrease microbial diversity and promote a microbiota that is associated not only with neonatal sepsis, but the predominant pathogen previously identified in the microbiome. Our data suggest that there may be a 'healthy microbiome' present in extremely premature neonates that may ameliorate risk of sepsis. More research is needed to determine whether altered antibiotics, probiotics or other novel therapies can re-establish a healthy microbiome in neonates. |
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Authors:
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Juliette C Madan; Richard Cowper Salari; Deepti Saxena; Lisa Davidson; George A O'Toole; Jason H Moore; Mitchell L Sogin; James A Foster; William H Edwards; Paul Palumbo; Patricia L Hibberd |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2012-5-6 |
Journal Detail:
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Title: Archives of disease in childhood. Fetal and neonatal edition Volume: - ISSN: 1468-2052 ISO Abbreviation: - Publication Date: 2012 May |
Date Detail:
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Created Date: 2012-5-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 9501297 Medline TA: Arch Dis Child Fetal Neonatal Ed Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Affiliation:
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1Department of Pediatrics, Dartmouth Hitchcock Medical Center, Lebanon, New Hampshire, USA. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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