Disinfection Strategies for Carbapenem-Resistant Klebsiella pneumoniae in a Healthcare Facility
Disinfectant resistance is evolving into a serious problem due to the long-term and extensive use of disinfectants, which brings great challenges to hospital infection control. As a notorious multidrug-resistant bacterium, carbapenem-resistant Klebsiella pneumoniae (CRKP) is one of the most common a...
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Published in | Antibiotics (Basel) Vol. 11; no. 6; p. 736 |
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Abstract | Disinfectant resistance is evolving into a serious problem due to the long-term and extensive use of disinfectants, which brings great challenges to hospital infection control. As a notorious multidrug-resistant bacterium, carbapenem-resistant Klebsiella pneumoniae (CRKP) is one of the most common and difficult pathogens of nosocomial infection. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests of seven kinds of disinfectants (0.1% benzalkonium bromide, 4% aqueous chlorhexidine, 75% alcohol, entoiodine II, 2% glutaraldehyde, 2000 mg/L chlorine-containing disinfectants, and 3% hydrogen peroxide) were detected by the broth dilution method. Three efflux pump genes (oqxA, oqxB, and qacE∆1-sul1) were detected by PCR. The mean MIC value of aqueous chlorhexidine from the intensive care unit (ICU) (0.0034%) was significantly higher than that from non-ICUs (0.0019%) (p < 0.05). The positive rates of three efflux pump genes oqxA, oqxB and qacE∆1-sul1 were 60.9% (39/64), 17.2% (11/64) and 71.9% (46/64) in the detected CRKP isolates, respectively. This study discovered that CRKP strains demonstrated extensive resistance to clinical disinfectants and suggest that it is necessary to perform corresponding increases in the concentration of aqueous chlorhexidine and chlorine-containing disinfectants on the basis of current standards in the healthcare industry. |
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AbstractList | Disinfectant resistance is evolving into a serious problem due to the long-term and extensive use of disinfectants, which brings great challenges to hospital infection control. As a notorious multidrug-resistant bacterium, carbapenem-resistant
Klebsiella pneumoniae
(CRKP) is one of the most common and difficult pathogens of nosocomial infection. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests of seven kinds of disinfectants (0.1% benzalkonium bromide, 4% aqueous chlorhexidine, 75% alcohol, entoiodine II, 2% glutaraldehyde, 2000 mg/L chlorine-containing disinfectants, and 3% hydrogen peroxide) were detected by the broth dilution method. Three efflux pump genes (
oqxA
,
oqxB
, and
qacE
∆
1-sul1
) were detected by PCR. The mean MIC value of aqueous chlorhexidine from the intensive care unit (ICU) (0.0034%) was significantly higher than that from non-ICUs (0.0019%) (
p
< 0.05). The positive rates of three efflux pump genes
oqxA
,
oqxB
and
qacE
∆
1-sul1
were 60.9% (39/64), 17.2% (11/64) and 71.9% (46/64) in the detected CRKP isolates, respectively. This study discovered that CRKP strains demonstrated extensive resistance to clinical disinfectants and suggest that it is necessary to perform corresponding increases in the concentration of aqueous chlorhexidine and chlorine-containing disinfectants on the basis of current standards in the healthcare industry. Disinfectant resistance is evolving into a serious problem due to the long-term and extensive use of disinfectants, which brings great challenges to hospital infection control. As a notorious multidrug-resistant bacterium, carbapenem-resistant Klebsiella pneumoniae (CRKP) is one of the most common and difficult pathogens of nosocomial infection. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests of seven kinds of disinfectants (0.1% benzalkonium bromide, 4% aqueous chlorhexidine, 75% alcohol, entoiodine II, 2% glutaraldehyde, 2000 mg/L chlorine-containing disinfectants, and 3% hydrogen peroxide) were detected by the broth dilution method. Three efflux pump genes (oqxA, oqxB, and qacE∆1-sul1) were detected by PCR. The mean MIC value of aqueous chlorhexidine from the intensive care unit (ICU) (0.0034%) was significantly higher than that from non-ICUs (0.0019%) (p < 0.05). The positive rates of three efflux pump genes oqxA, oqxB and qacE∆1-sul1 were 60.9% (39/64), 17.2% (11/64) and 71.9% (46/64) in the detected CRKP isolates, respectively. This study discovered that CRKP strains demonstrated extensive resistance to clinical disinfectants and suggest that it is necessary to perform corresponding increases in the concentration of aqueous chlorhexidine and chlorine-containing disinfectants on the basis of current standards in the healthcare industry. Disinfectant resistance is evolving into a serious problem due to the long-term and extensive use of disinfectants, which brings great challenges to hospital infection control. As a notorious multidrug-resistant bacterium, carbapenem-resistant Klebsiella pneumoniae (CRKP) is one of the most common and difficult pathogens of nosocomial infection. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests of seven kinds of disinfectants (0.1% benzalkonium bromide, 4% aqueous chlorhexidine, 75% alcohol, entoiodine II, 2% glutaraldehyde, 2000 mg/L chlorine-containing disinfectants, and 3% hydrogen peroxide) were detected by the broth dilution method. Three efflux pump genes (oqxA, oqxB, and qacE∆1-sul1) were detected by PCR. The mean MIC value of aqueous chlorhexidine from the intensive care unit (ICU) (0.0034%) was significantly higher than that from non-ICUs (0.0019%) (p < 0.05). The positive rates of three efflux pump genes oqxA, oqxB and qacE∆1-sul1 were 60.9% (39/64), 17.2% (11/64) and 71.9% (46/64) in the detected CRKP isolates, respectively. This study discovered that CRKP strains demonstrated extensive resistance to clinical disinfectants and suggest that it is necessary to perform corresponding increases in the concentration of aqueous chlorhexidine and chlorine-containing disinfectants on the basis of current standards in the healthcare industry.Disinfectant resistance is evolving into a serious problem due to the long-term and extensive use of disinfectants, which brings great challenges to hospital infection control. As a notorious multidrug-resistant bacterium, carbapenem-resistant Klebsiella pneumoniae (CRKP) is one of the most common and difficult pathogens of nosocomial infection. The minimum inhibitory concentration (MIC) and minimum bactericidal concentration (MBC) tests of seven kinds of disinfectants (0.1% benzalkonium bromide, 4% aqueous chlorhexidine, 75% alcohol, entoiodine II, 2% glutaraldehyde, 2000 mg/L chlorine-containing disinfectants, and 3% hydrogen peroxide) were detected by the broth dilution method. Three efflux pump genes (oqxA, oqxB, and qacE∆1-sul1) were detected by PCR. The mean MIC value of aqueous chlorhexidine from the intensive care unit (ICU) (0.0034%) was significantly higher than that from non-ICUs (0.0019%) (p < 0.05). The positive rates of three efflux pump genes oqxA, oqxB and qacE∆1-sul1 were 60.9% (39/64), 17.2% (11/64) and 71.9% (46/64) in the detected CRKP isolates, respectively. This study discovered that CRKP strains demonstrated extensive resistance to clinical disinfectants and suggest that it is necessary to perform corresponding increases in the concentration of aqueous chlorhexidine and chlorine-containing disinfectants on the basis of current standards in the healthcare industry. |
Author | Huang, Songyin Liu, Xiaoqiang Ni, Lijia Shen, Rui Li, Xuexue Chen, Baiji Wu, Xiquan Li, Hongyu Zhang, Zhixian Xie, Xiaoying |
AuthorAffiliation | 3 Biotherapy Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China 1 Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; nilj@mail.sysu.edu.cn (L.N.); zhangzhx6@mail.sysu.edu.cn (Z.Z.); shenr6@mail.sysu.edu.cn (R.S.); lxqiang@mail.sysu.edu.cn (X.L.); lixx228@mail.sysu.edu.cn (X.L.); chenbj26@mail.sysu.edu.cn (B.C.); wuxiquan@mail.sysu.edu.cn (X.W.); lehyu@126.com (H.L.) 2 Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China |
AuthorAffiliation_xml | – name: 1 Department of Clinical Laboratory, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China; nilj@mail.sysu.edu.cn (L.N.); zhangzhx6@mail.sysu.edu.cn (Z.Z.); shenr6@mail.sysu.edu.cn (R.S.); lxqiang@mail.sysu.edu.cn (X.L.); lixx228@mail.sysu.edu.cn (X.L.); chenbj26@mail.sysu.edu.cn (B.C.); wuxiquan@mail.sysu.edu.cn (X.W.); lehyu@126.com (H.L.) – name: 2 Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China – name: 3 Biotherapy Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, China |
Author_xml | – sequence: 1 givenname: Lijia surname: Ni fullname: Ni, Lijia – sequence: 2 givenname: Zhixian surname: Zhang fullname: Zhang, Zhixian – sequence: 3 givenname: Rui surname: Shen fullname: Shen, Rui – sequence: 4 givenname: Xiaoqiang surname: Liu fullname: Liu, Xiaoqiang – sequence: 5 givenname: Xuexue surname: Li fullname: Li, Xuexue – sequence: 6 givenname: Baiji surname: Chen fullname: Chen, Baiji – sequence: 7 givenname: Xiquan surname: Wu fullname: Wu, Xiquan – sequence: 8 givenname: Hongyu surname: Li fullname: Li, Hongyu – sequence: 9 givenname: Xiaoying surname: Xie fullname: Xie, Xiaoying – sequence: 10 givenname: Songyin orcidid: 0000-0002-9575-044X surname: Huang fullname: Huang, Songyin |
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SubjectTerms | Antibiotics Antimicrobial agents Antiseptics Bacteria carbapenem-resistant Klebsiella pneumoniae Cell division Chlorhexidine Chlorine Departments Dilution disinfectant resistance Disinfectants Disinfection Disinfection & disinfectants Efflux efflux pump Genes Health care Health care facilities Hydrogen peroxide Infections Klebsiella Klebsiella pneumoniae Laboratories Minimum inhibitory concentration Multidrug resistance Neurosurgery Nosocomial infection |
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Title | Disinfection Strategies for Carbapenem-Resistant Klebsiella pneumoniae in a Healthcare Facility |
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