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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 Bush,  
 

beta-Lactamases of increasing clinical importance.

Resistance to b-lactam-containing antimicrobial agents continues to increase, frequently due to the presence of b-lactamases in Gram-negative bacteria. Over the past twenty-five years broad-spectrum enzymes such as TEM- and SHV-variants and the metallo-b-lactamases have become more prolific. As a result of the ability of plasmids to continue to acquire additional resistance determinants, many of the b-lactamase-producing Gram-negative pathogens have become multi-drug resistant. In combination with decreased permeability, the organisms can become virtually untreatable with current therapies. The major groups of b-lactamases that pose the most serious therapeutic problems include the extended-spectrum b-lactamases, the plasmid-mediated cephalosporinases, the inhibitor-resistant TEM- or SHV-derived b-lactamases and the carbapenem-hydrolyzing b-lactamases. Those enzymes that can be transferred on mobile elements are the most serious of the newer b-lactamases, and include enzymes in each of the four groups outlined above.[1]

References

  1. beta-Lactamases of increasing clinical importance. Bush, K. Curr. Pharm. Des. (1999) [Pubmed]
 
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