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Dynamics of Antibiotic Resistant Mycobacterium tuberculosis during Long-Term Infection and Antibiotic Treatment
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2011 (English)In: PLOS ONE, ISSN 1932-6203, Vol. 6, no 6, e21147- p.Article in journal (Refereed) Published
Abstract [en]

For an infecting bacterium the human body provides several potential ecological niches with both internally (e. g. host immunity) and externally (e.g. antibiotic use) imposed growth restrictions that are expected to drive adaptive evolution in the bacterium, including the development of antibiotic resistance. To determine the extent and pattern of heterogeneity generated in a bacterial population during long-term antibiotic treatment, we examined in a monoclonal Mycobacterium tuberculosis infection antibiotic resistant mutants isolated from one patient during a 9-years period. There was a progressive accumulation of resistance mutations in the infecting clone. Furthermore, apparent clonal sweeps as well as co-existence of different resistant mutants were observed during this time, demonstrating that during treatment there is a high degree of dynamics in the bacterial population. These findings have important implications for diagnostics and treatment of drug resistant tuberculosis infections.

Place, publisher, year, edition, pages
2011. Vol. 6, no 6, e21147- p.
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Medical and Health Sciences
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URN: urn:nbn:se:uu:diva-155910ISI: 000291734100061OAI: oai:DiVA.org:uu-155910DiVA: diva2:429677
Available from: 2011-07-05 Created: 2011-07-04 Last updated: 2012-05-10Bibliographically approved

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Andersson, Dan I.

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