NDLI: Neonatal Coinfection Model of Coagulase-Negative Staphylococcus (Staphylococcus epidermidis) and Candida albicans: Fluconazole Prophylaxis Enhances Survival and Growth▿

Content Provider	PubMed Central
Author	Venkatesh, Mohan Pammi Pham, Don Fein, Mindy Kong, Lingkun Weisman, Leonard E.
Copyright Year	2007
Abstract	Coagulase-negative staphylococci (CoNS) and Candida are among the most common causes of single infections and coinfections in neonates after 72 h of age. In neonates, coinfection increases the rate of mortality threefold and results in significantly greater morbidity compared to those that result from single infections. In an effort to better understand this phenomenon, we developed the first neonatal animal model of coinfection (with CoNS and Candida) and evaluated its effects on mortality and morbidity and the impact of antifungal prophylaxis with fluconazole. Neonatal Wistar rats were infected with Candida albicans and/or Staphylococcus epidermidis with doses of 2 × 108 and 2 × 106 CFU subcutaneously in different combinations and were monitored for mortality, weight gain, and bacteremia. The in vitro sensitivity of C. albicans to fluconazole was evaluated and the MIC was determined. A subset of rats in these experiments received fluconazole at 10 mg/kg of body weight/dose intraperitoneally starting 24 h before infection for 4 days, and the serum trough levels of fluconazole were measured. Coinfection in the suckling rat significantly increased the rate of mortality compared to that after infection with a single species (P < 0.001) and resulted in deaths even at sublethal doses. Coinfection also impaired weight gain significantly in severely infected pups compared to that achieved after infection with a single species (P < 0.001). Fluconazole prophylaxis significantly reduced mortality by 30% in the Candida group and 36% in the coinfection group and improved weight gain in this neonatal model of coinfection (P < 0.001). We developed a neonatal model of coinfection with Candida and CoNS, observed significantly greater mortality and morbidity with coinfection, and found that fluconazole prophylaxis significantly reduced the rates of both mortality and morbidity. Further research on neonatal coinfection is urgently needed to improve clinical outcomes.
Related Links	http://dx.doi.org/10.1128/AAC.01298-06
Starting Page	1240
File Format	PDF
ISSN	10986596
e-ISSN	10986596
Journal	Antimicrobial Agents and Chemotherapy
Issue Number	4
Volume Number	51
Language	English
Publisher	American Society for Microbiology
Publisher Date	2007-04-01
Access Restriction	Open
Rights Holder	American Society for Microbiology
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Infectious Diseases Pharmacology Pharmacology (medical)

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