Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.7/165
Título: Positive Epistasis Drives the Acquisition of Multidrug Resistance
Autor: Trindade, S.
Sousa, A.
Xavier, KB.
Dionisio, F.
Ferreira, MG.
Gordo, I.
Data: Jul-2009
Editora: PLOS
Citação: Trindade, S., Sousa, A., Xavier, KB., Dionisio, F., Ferreira, MG.,Gordo, I. (2009). “Positive Epistasis Drives the Acquisition of Multidrug Resistance”. PLOS Genetic. 5 ( 7): 1-9
Resumo: The evolution of multiple antibiotic resistance is an increasing global problem. Resistance mutations are known to impair fitness, and the evolution of resistance to multiple drugs depends both on their costs individually and on how they interact-epistasis. Information on the level of epistasis between antibiotic resistance mutations is of key importance to understanding epistasis amongst deleterious alleles, a key theoretical question, and to improving public health measures. Here we show that in an antibiotic-free environment the cost of multiple resistance is smaller than expected, a signature of pervasive positive epistasis among alleles that confer resistance to antibiotics. Competition assays reveal that the cost of resistance to a given antibiotic is dependent on the presence of resistance alleles for other antibiotics.
URI: http://hdl.handle.net/10400.7/165
ISSN: 1553-7390
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