The effect of low-intensity pulsed sound waves delivered by the Exogen device on Staphylococcus aureus morphology and genetics

Ayan, İrfan; Aslan, Gönül; Çömelekoğlu, Ülkü; Yılmaz, Nejat; Çolak, Mehmet

doi:10.3944/aott.2008.272

Cited by 16 publications

(11 citation statements)

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“…The physical stress caused by cavitation decreased the stability of the bacterial outer membrane, then the bacterial membrane loosened after ultrasonic irradiation, and, consistent with previous study [22], the cellular walls appeared to be thicker than normal. Only in the G MUS group, discontinuity could be observed, a proof that MUS created a stronger cavitation than US alone.…”

Section: Discussionsupporting

confidence: 90%

Microbubble-Mediated Ultrasound Enhances the Lethal Effect of Gentamicin on PlanktonicEscherichia coli

Zhu

Cai

Shi

et al. 2014

BioMed Research International

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Previous research has found that low-intensity ultrasound enhanced the lethal effect of gentamicin on planktonic E. coli. We aimed to further investigate whether microbubble-mediated low-intensity ultrasound could further enhance the antimicrobial efficacy of gentamicin. The planktonic E. coli (ATCC 25922) was distributed to four different interventions: control (GCON), microbubble only (GMB), ultrasound only (GUS), and microbubble-mediated ultrasound (GMUS). Ultrasound was applied with 100 mW/cm2 (average intensity) and 46.5 KHz, which presented no bactericidal activity. After 12 h, plate counting was used to estimate the number of bacteria, and bacterial micromorphology was observed with transmission electron microscope. The results showed that the viable counts of E. coli in GMUS were decreased by 1.01 to 1.42 log10 CFU/mL compared with GUS (P < 0.01). The minimal inhibitory concentration (MIC) of gentamicin against E. coli was 1 μg/mL in the GMUS and GUS groups, lower than that in the GCON and GMB groups (2 μg/mL). Transmission electron microscopy (TEM) images exhibited more destruction and higher thickness of bacterial cell membranes in the GMUS than those in other groups. The reason might be the increased permeability of cell membranes for gentamicin caused by acoustic cavitation.

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Section: Discussionsupporting

confidence: 90%

Microbubble-Mediated Ultrasound Enhances the Lethal Effect of Gentamicin on PlanktonicEscherichia coli

Zhu

Cai

Shi

et al. 2014

BioMed Research International

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“…Pornpongmetta and Thanut tamavong [16] reported microbial substrate utilization by aerobic bacteria from municipal waste water treat ment plant to be affected by music. Ayan et al [17] have shown that low intensity pulsed sound can affect morphology and genetics of Staphylococcus aureus.…”

Section: Resultsmentioning

confidence: 99%

Effect of audible sound in form of music on microbial growth and production of certain important metabolites

Sarvaiya

Kothari

2015

Microbiology

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Effect of a type of Indian classical music (Raag Kirwani) comprised of the sound corresponding to a frequency range of 38-689 Hz, on microbial growth, production of certain important metabolites, and antibiotic susceptibility was investigated. All the bacteria and yeasts used as test organisms were found to reg ister better (3.15-40.37% higher) growth under the influence of music, except Serratia marcescens. Music treatment was also found to affect production of bacterial pigments (prodigiosin and violacein) whose pro duction is normally linked with quorum sensing in the producing bacteria. All the test organisms exhibited an increased antibiotic susceptibility (increase ranging from 3.81-18.69%) under the influence of music. Chromobacterium violaceum and S. marcescens were found to degrade cephazolin at a faster rate when incu bated with music. Membrane permeability of the test organisms seemed to get altered owing to music treat ment. Intracellular concentration of cations (calcium and potassium) and protein content of the music treated cultures was also significantly different than the untreated control. The audible sound in form of music employed in this study was able to affect growth, metabolism, and antibiotic susceptibility of prokaryotic as well as eukaryotic microbes.

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“…Earlier few reports [3,6,7,8,23] have indicated the ability of sound to influence microorganisms. Sound (whether in form of music or otherwise) can travel through the growth medium in which microbes are inoculated and this can give rise to vibrations.…”

Section: Resultsmentioning

confidence: 99%

“…Pornpongmetta et al [6] reported microbial substrate utilization of aerobic bacteria from municipal waste water treatment plant to be affected by music. Ayan et al [7] have shown that low-intensity pulsed sound can affect morphology and genetics of Staphylococcus aureus. Eukaryotic life forms have also been reported to be influenced by sound.…”

Section: Introductionmentioning

confidence: 99%

Audible Sound in Form of Music Can Influence Microbial Growth, Metabolism and Antibiotic Susceptibility

Sarvaiya¹,

Kothari²

2017

JABB

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Effect of a type of Indian classical music (Raag Malhar) comprised of the sound corresponding to a frequency range of 41-645 Hz, on microbial growth, production of certain important metabolites and antibiotic susceptibility was investigated. All the bacteria and yeasts used as test organisms were found to register better growth under the influence of music, except Serratia marcescens. Music treatment was also found to promote production of bacterial pigments (prodigiosin and violacein) whose production is normally linked with quorum sensing in the producing bacteria. All the test organisms (except S. marcescens) exhibited an increased antibiotic susceptibility under the influence of music. Chromobacterium violaceum and S. marcescens were found to degrade cefazolin at a faster rate when incubated with music. Membrane permeability of the test organisms seemed to get altered owing to music treatment. Concentration of cations (calcium and potassium) and protein content of the music treated cultures was also significantly different than the untreated control. Alcohol tolerance of Saccharomyces cerevisiae was also notably enhanced under the influence of music.

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The effect of low-intensity pulsed sound waves delivered by the Exogen device on Staphylococcus aureus morphology and genetics

Abstract: Low-intensity sound waves may be beneficial as a prophylactic measure to prevent infections in primary orthopedic operations and as an adjuvant therapy for infected nonunions.

Cited by 16 publications

References 0 publications

Microbubble-Mediated Ultrasound Enhances the Lethal Effect of Gentamicin on PlanktonicEscherichia coli

Microbubble-Mediated Ultrasound Enhances the Lethal Effect of Gentamicin on PlanktonicEscherichia coli

Effect of audible sound in form of music on microbial growth and production of certain important metabolites

Audible Sound in Form of Music Can Influence Microbial Growth, Metabolism and Antibiotic Susceptibility

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