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Title: Combinatorial small-molecule therapy prevents uropathogenic Escherichia coli catheter-associated urinary tract infections in mice
Authors: Kline, Kimberly A.
Guiton, Pascale S.
Cusumano, Corinne K.
Dodson, Karen W.
Han, Zhenfu.
Janetka, James W.
Henderson, Jeffrey P.
Caparon, Michael G.
Hultgren, Scott J.
Issue Date: 2012
Source: Guiton, P. S., Cusumano, C. K., Kline, K. A., Dodson, K. W., Han, Z., Janetka, J. W., et al. (2012). Combinatorial small-molecule therapy prevents uropathogenic Escherichia coli catheter-associated urinary tract infections in mice. Antimicrobial Agents and Chemotherapy, 56(9), 4738-4745.
Series/Report no.: Antimicrobial agents and chemotherapy
Abstract: Catheter-associated urinary tract infections (CAUTIs) constitute the majority of nosocomial urinary tract infections (UTIs) and pose significant clinical challenges. These infections are polymicrobial in nature and are often associated with multidrug-resistant pathogens, including uropathogenic Escherichia coli (UPEC). Urinary catheterization elicits major histological and immunological alterations in the bladder that can favor microbial colonization and dissemination in the urinary tract. We report that these biological perturbations impact UPEC pathogenesis and that bacterial reservoirs established during a previous UPEC infection, in which bacteriuria had resolved, can serve as a nidus for subsequent urinary catheter colonization. Mannosides, small molecule inhibitors of the type 1 pilus adhesin, FimH, provided significant protection against UPEC CAUTI by preventing bacterial invasion and shifting the UPEC niche primarily to the extracellular milieu and on the foreign body. By doing so, mannosides potentiated the action of trimethoprim-sulfamethoxazole in the prevention and treatment of CAUTI. In this study, we provide novel insights into UPEC pathogenesis in the context of urinary catheterization, and demonstrate the efficacy of novel therapies that target critical mechanisms for this infection. Thus, we establish a proof-of-principle for the development of mannosides to prevent and eventually treat these infections in the face of rising antibiotic-resistant uropathogens.
ISSN: 0066-4804
DOI: 10.1128/AAC.00447-12
Rights: © 2012 American Society for Microbiology.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:SCELSE Journal Articles

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