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首页> 外文期刊>Taiwan Veterinary Journal >EFFECTS OF THE bap AND eno GENES ON THE EFFECTIVENESS OF DISINFECTANTS AGAINST COAGULASE-NEGATIVE STAPHYLOCOCCI
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EFFECTS OF THE bap AND eno GENES ON THE EFFECTIVENESS OF DISINFECTANTS AGAINST COAGULASE-NEGATIVE STAPHYLOCOCCI

机译：EFFECTS OF THE bap AND eno GENES ON THE EFFECTIVENESS OF DISINFECTANTS AGAINST COAGULASE-NEGATIVE STAPHYLOCOCCI

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摘要

This study sought to determine the minimum bactericidal concentrations (MBCs) of didecyldimethylammonium chloride (DDAC), povidone iodine (PI), and chlorhexidine and the differences in these values among coagulase-negative staphylococci (CNSs) that harbor or do not harbor biofilm-related genes (eno, bap, and ica). Using the limiting dilution technique, the MBCs against three different disinfectants were estimated and compared using statistical methods. The results showed that the biofilm-gene-positive CNS isolates exhibited higher tolerance (p=0.02, upper-tailed test) to 2mgL~(-1) DDAC and 10mgL~(-1) povidone iodine (p=0.03, upper-tailed test). Different resistance capacities were found among these three biofilm formation-related genes. The isolatesthat contained the bap gene exhibited a higher tolerance level. This observation was confirmed by logistic regression models, which revealed that the bap (odds ratio =5.17) and eno (odds ratio =3.56) genes significantly affected the survival capacity. This study demonstrated that biofilm-gene-positive CNS isolates exhibited increased survival in the presence of higher concentrations of all three disinfectants and that both the bap and eno genes could affect the survival capacity. Among the three genes,the bap gene had the strongest effect on the survival capacity of CNSs in the presence of all three disinfectants. The appropriate use of disinfectants can control these biofilm-gene embedded CNSs more efficiently.

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