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Published on: June 24, 2025
Chelator-based catheter lock solutions in eradicating organisms in biofilm
I Raad1, J Rosenblatt, R Reitzel
1Department of Infectious Diseases, Infection Control and Employee Health, The University of Texas M. D. Anderson Cancer Center, Houston, Texas, USA. iraad@mdanderson.org
Abstract:
Two different chelator-based antimicrobial catheter lock solutions, methylene blue-citrate-parabens (MB-CIT) and minocycline-EDTA-25% ethanol (M-EDTA-25% ETOH), were compared in 2-h biofilm eradication experiments. Eradication of both mature and immature Gram-positive, Gram-negative, and fungal biofilms was assessed. M-EDTA-25% ETOH was able to fully eradicate all biofilms within 2 h. MB-CIT was only effective against immature biofilms but was unable to fully eradicate most of the mature biofilms tested.
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