skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Alternating magnetic fields and antibiotics eradicate biofilm on metal in a synergistic fashion

Journal Article · · npj Biofilms and Microbiomes

Abstract Hundreds of thousands of human implant procedures require surgical revision each year due to infection. Infections are difficult to treat with conventional antibiotics due to the formation of biofilm on the implant surface. We have developed a noninvasive method to eliminate biofilm on metal implants using heat generated by intermittent alternating magnetic fields (iAMF). Here, we demonstrate that heat and antibiotics are synergistic in biofilm elimination. For Pseudomonas aeruginosa biofilm, bacterial burden was reduced >3 log with iAMF and ciprofloxacin after 24 h compared with either treatment alone ( p  < 0.0001). This effect was not limited by pathogen or antibiotic as similar biofilm reductions were seen with iAMF and either linezolid or ceftriaxone in Staphylococcus aureus . iAMF and antibiotic efficacy was seen across various iAMF settings, including different iAMF target temperatures, dose durations, and dosing intervals. Initial mechanistic studies revealed membrane disruption as one factor important for AMF enhanced antibacterial activity in the biofilm setting. This study demonstrates the potential of utilizing a noninvasive approach to reduce biofilm off of metallic implants.

Research Organization:
Univ. of Texas Southwestern Medical Center, Dallas, TX (United States)
Sponsoring Organization:
USDOE; USDOE Office of Science (SC), Office of SBIR/STTR Programs (SBIR/STTR)
Grant/Contract Number:
1R44AI155291
OSTI ID:
1812961
Alternate ID(s):
OSTI ID: 1904160
Journal Information:
npj Biofilms and Microbiomes, Journal Name: npj Biofilms and Microbiomes Vol. 7 Journal Issue: 1; ISSN 2055-5008
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United Kingdom
Language:
English

References (35)

Temperature-sensitive liposomal ciprofloxacin for the treatment of biofilm on infected metal implants using alternating magnetic fields journal February 2018
Implant infections: adhesion, biofilm formation and immune evasion journal May 2018
Induction heating for eradicating Staphylococcus epidermidis from biofilm journal April 2020
Bacterial biofilms: from the Natural environment to infectious diseases journal February 2004
Electric Current-Induced Detachment of Staphylococcus epidermidis Biofilms from Surgical Stainless Steel journal November 2004
Projected Increase in Periprosthetic Joint Infections Secondary to Rise in Diabetes and Obesity journal January 2016
Synergy between induction heating, antibiotics, and N -acetylcysteine eradicates Staphylococcus aureus from biofilm journal January 2020
Thermal dose determination in cancer therapy journal April 1984
Prosthetic-Joint Infections journal October 2004
Whole-Genome Sequencing Accurately Identifies Resistance to Extended-Spectrum β-Lactams for Major Gram-Negative Bacterial Pathogens journal May 2017
Prosthetic Joint Infection Update journal December 2018
Antibiotic stability over six weeks in aqueous solution at body temperature with and without heat treatment that mimics the curing of bone cement journal May 2017
Antibiotic-Impregnated Cement Spacers for the Treatment of Infection Associated with Total Hip or Knee Arthroplasty journal January 2007
Thermal shock susceptibility and regrowth of Pseudomonas aeruginosa biofilms journal February 2018
Ror2 signaling regulates Golgi structure and transport through IFT20 for tumor invasiveness journal January 2017
Risk factors for treatment failure in patients with prosthetic joint infections journal August 2010
Antibiotic resistance of bacteria in biofilms journal July 2001
Antibacterial effects of extracorporeal shock waves journal January 2005
The efficacy of antibiotics enhanced by electrical currents against Pseudomonas aeruginosa biofilms journal January 1996
Characteristics of the biofilm matrix and its role as a possible target for the detection and eradication of Staphylococcus epidermidis associated with medical implant infections journal August 2010
Electrical enhancement of biocide efficacy against Pseudomonas aeruginosa biofilms journal November 1992
Treatment of biofilm infections on implants with low-frequency ultrasound and antibiotics journal March 2005
Synergy of Silver Nanoparticles and Aztreonam against Pseudomonas aeruginosa PAO1 Biofilms journal July 2014
CEM43°C thermal dose thresholds: a potential guide for magnetic resonance radiofrequency exposure levels? journal April 2013
Projections of Primary and Revision Hip and Knee Arthroplasty in the United States from 2005 to 2030 journal January 2007
Thermal mitigation of Pseudomonas aeruginosa biofilms journal September 2015
Synergistic effects of heat and antibiotics on Pseudomonas aeruginosa biofilms journal October 2017
Effects of ciprofloxacin, norfloxacin, and ofloxacin on in vitro adhesion and survival of Pseudomonas aeruginosa AK1 on urinary catheters journal July 1994
Effect of Heating on the Stability of Quinolones in Milk journal April 2010
Mild magnetic nanoparticle hyperthermia enhances the susceptibility of Staphylococcus aureus biofilm to antibiotics journal January 2020
Volumetric HIFU ablation under 3D guidance of rapid MRI thermometry: Volumetric HIFU ablation with 3D rapid MRI thermometry journal July 2009
Use of Pharmacodynamic Parameters To Predict Efficacy of Combination Therapy by Using Fractional Inhibitory Concentration Kinetics journal April 1998
Thermal dosimetry of a focused ultrasound beam in vivo by magnetic resonance imaging journal September 1999
Effects of ciprofloxacin and protamine sulfate combinations against catheter-associated Pseudomonas aeruginosa biofilms journal June 1995
A Method for Testing for Synergy with Any Number of Agents journal February 1978