Publication Date:
2013-02-09
Description:
Changes in the microbial community structure are observed in individuals with intestinal inflammatory disorders. These changes are often characterized by a depletion of obligate anaerobic bacteria, whereas the relative abundance of facultative anaerobic Enterobacteriaceae increases. The mechanisms by which the host response shapes the microbial community structure, however, remain unknown. We show that nitrate generated as a by-product of the inflammatory response conferred a growth advantage to the commensal bacterium Escherichia coli in the large intestine of mice. Mice deficient in inducible nitric oxide synthase did not support the growth of E. coli by nitrate respiration, suggesting that the nitrate generated during inflammation was host-derived. Thus, the inflammatory host response selectively enhances the growth of commensal Enterobacteriaceae by generating electron acceptors for anaerobic respiration.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4004111/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉 〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4004111/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Winter, Sebastian E -- Winter, Maria G -- Xavier, Mariana N -- Thiennimitr, Parameth -- Poon, Victor -- Keestra, A Marijke -- Laughlin, Richard C -- Gomez, Gabriel -- Wu, Jing -- Lawhon, Sara D -- Popova, Ina E -- Parikh, Sanjai J -- Adams, L Garry -- Tsolis, Renee M -- Stewart, Valley J -- Baumler, Andreas J -- AI076246/AI/NIAID NIH HHS/ -- AI088122/AI/NIAID NIH HHS/ -- AI090387/AI/NIAID NIH HHS/ -- R21 AI107393/AI/NIAID NIH HHS/ -- New York, N.Y. -- Science. 2013 Feb 8;339(6120):708-11. doi: 10.1126/science.1232467.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medical Microbiology and Immunology, School of Medicine, University of California, Davis, One Shields Avenue, Davis, CA, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23393266" target="_blank"〉PubMed〈/a〉
Keywords:
Anaerobiosis
;
Animals
;
Cattle
;
Colitis/*metabolism/*microbiology
;
Escherichia coli/genetics/*growth & development/*metabolism
;
Ileum/microbiology
;
Intestine, Large/*microbiology
;
Mice
;
Mice, Inbred C57BL
;
Mutation
;
Nitrates/*metabolism
;
Nitric Oxide Synthase Type II/antagonists & inhibitors/deficiency/metabolism
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
