Influence of a Mono-Frequency Sound on Bacteria can be a Function of the Sound-Level

Kothari, Vijay; Joshi, Chinmayi; Patel, Pooja; Mehta, Mitul C.; Dubey, S. G.; Mishra, Brijesh; Sarvaiya, Niral

doi:10.17485/ijst/2018/v11i4/111366

Cited by 10 publications

(8 citation statements)

References 7 publications

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“…Liu et al (2016) indicated the possibility of increased release of chemical mediators of QS in sound-exposed endospores. We have also shown altered production of QS-regulated pigments in sound-exposed bacterial cultures (Kothari et al, 2017;Kothari et al, 2018). QS being an important regulator of virulence (Natrah et al ., 2011), any chemical or physical agents capable of modulating QS can be expected to modulate bacterial virulence too.…”

Section: Effect Of Sonic Stimulation On Bacterial Virulencesupporting

confidence: 60%

“…Previously we have reported results of our in vitro experiments describing (a) effect of low power MW on microbial growth/metabolism (Kushwah et al, 2013), protein synthesis (Mishra et al, 2013), enzyme activity (Dholiya et al, 2012), exopolysaccharide production (Kushwah et al, 2013), toxin production (Ramanuj et al, 2015), quorum-sensing (QS) regulated pigment production (Chaudhari et al, 2014), etc. ; effect of sonic stimulation on microbial growth (Sarvaiya and Kothari, 2015;Shah et al, 2016), antibiotic susceptibility (Sarvaiya and Kothari, 2017), and QS-regulated pigment production (Kothari et al, 2017;Kothari et al, 2018). Mutagenic effect of MW has also been previously described by us (Gosai et al, 2013;Kothari et al, 2014).…”

Section: Introductionmentioning

confidence: 57%

“…not subjected to sound stimulation) plate. One non-playing speaker was also placed in the glass chamber used for the control plate at a distance of 13 cm from the plate, where no electricity was supplied and no sound was generated (Kothari et al, 2018). Intensity of sound was measured with a digital sound level meter (KUSAM-MECO® KM 929 MK1; detection range 30-130 dB) by putting the sensor in place of the 24-well plate.…”

Section: Sonic Stimulationmentioning

confidence: 99%

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Sonic Stimulation and Low Power Microwave Radiation Can Modulate Bacterial Virulence Towards Caenorhabditis elegans

Patel

Vekariya

et al. 2019

AIA

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Background: In view of the global threat of antimicrobial resistance, novel alternative approaches to deal with infectious bacteria are warranted, in addition to the conventional invasive therapeutic approaches. Objective: This study aimed at investigating whether exposure to sonic stimulation or microwave radiation can affect virulence of pathogenic bacteria toward the model nematode host Caenorhabditis elegans. Methods: Caenorhabditis elegans worms infected with different pathogenic bacteria were subjected to sonic treatment to investigate whether such sound treatment can exert any therapeutic effect on the infected worms. Virulence of microwave exposed bacteria was also assessed using this nematode host. Results: Sound corresponding to 400 Hz, and the divine sound ‘Om’ conferred protective effect on C. elegans in face of bacterial infection, particularly that caused by Serratia marcescens or Staphylococcus aureus. The observed effect seemed to occur due to influence of sound on bacteria, and not on the worm. Additionally, effect of microwave exposure on bacterial virulence was also investigated, wherein microwave exposure could reduce virulence of S. aureus towards C. elegans. Conclusion: Sonic stimulation/ microwave exposure was demonstrated to be capable of modulating bacterial virulence.

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Section: Effect Of Sonic Stimulation On Bacterial Virulencesupporting

confidence: 60%

Section: Introductionmentioning

confidence: 57%

Section: Sonic Stimulationmentioning

confidence: 99%

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Sonic Stimulation and Low Power Microwave Radiation Can Modulate Bacterial Virulence Towards Caenorhabditis elegans

Patel

Vekariya

et al. 2019

AIA

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“…In Kothari et al (31), a speaker (Minix soundbar) was placed 15 cm away next to the cell tubes inside a glass box-shaped chamber (L: 250 x W: 250 x H: 150 mm). The stimuli consisted of sine tones played from the computer software NCH Tone Generator (https://www.nch.com.au/index.html) at 300 Hz and at five different SPLs (70, 76.5, 83, 87.5, 89.5 dB SPL) each for 48 hours.…”

Section: Resultsmentioning

confidence: 99%

Music for cells? A systematic review of studies investigating the effects of audible sound played through speaker-based systems to cell cultures

Kwak

Combriat

Wang

et al. 2020

Preprint

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There have been several studies investigating whether musical sound can be used as cell stimuli in recent years. We systematically searched publications to get an overview of studies that have used audible sound played through speaker-based systems to induce mechanical perturbation in cell cultures. A total of 12 studies were identified. We focused on the experimental setups, the sound materials used as stimuli, and the outcomes. The stimuli were categorized into simple and complex sounds. The effects were reported as enhanced cell migration, proliferation, colony formation, and differentiation ability. However, there are significant differences in methodologies and cell type-specific outcomes, which made it difficult to find a systematic pattern in the results. We suggest that future experiments should consider using: 1) a more controlled acoustic environment), 2) standardized sound and noise measurement methods, and 3) a more comprehensive range of controlled sound stimuli.

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“…Plants also have mechano-reception, and roots may alter their growth in reaction to certain vibrations and sounds [6]. The list of organisms that utilize sound also includes microbes: several studies have shown that microbes can respond to sound under laboratory conditions by changing gene expression and metabolism (e.g., yeast [7], bacteria [8]). In fact, physical transmission of information in soil comes with its distinct advantages, especially for microbes: it is extremely fast, energy-efficient, and potentially operating over larger distances compared to the limits imposed by the production and diffusion of chemical signals in soil [9].…”

Section: Introductionmentioning

confidence: 99%

Sounds of Soil: A New World of Interactions under Our Feet?

Rillig

Bonneval²,

Lehmann

2019

Soil Systems

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Soils are biodiversity-dense and constantly carry chemical flows of information, with our mental image of soil being dark and quiet. But what if soil biota tap sound, or more generally, vibrations as a source of information? Vibrations are produced by soil biota, and there is accumulating evidence that such vibrations, including sound, may also be perceived. We here argue for potential advantages of sound/vibration detection, which likely revolve around detection of potential danger, e.g., predators. Substantial methodological retooling will be necessary to capture this form of information, since sound-related equipment is not standard in soils labs, and in fact this topic is very much at the fringes of the classical soil research at present. Sound, if firmly established as a mode of information exchange in soil, could be useful in an 'acoustics-based' precision agriculture as a means of assessing aspects of soil biodiversity, and the topic of sound pollution could move into focus for soil biota and processes.

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Influence of a Mono-Frequency Sound on Bacteria can be a Function of the Sound-Level

Cited by 10 publications

References 7 publications

Sonic Stimulation and Low Power Microwave Radiation Can Modulate Bacterial Virulence Towards Caenorhabditis elegans

Sonic Stimulation and Low Power Microwave Radiation Can Modulate Bacterial Virulence Towards Caenorhabditis elegans

Music for cells? A systematic review of studies investigating the effects of audible sound played through speaker-based systems to cell cultures

Sounds of Soil: A New World of Interactions under Our Feet?

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