Influence of Microbubbles on Free Radical Generation by Ultrasound in Aqueous Solution: Dependence of Ultrasound Frequency

Masuda, Nanae; Maruyama, Akiko; Eguchi, Tetsuo; Hirakawa, Tsutomu; Murakami, Yoshinori

doi:10.1021/acs.jpcb.5b05707

Cited by 50 publications

(31 citation statements)

References 27 publications

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“…It was accordance with the Makuta et al (2013) who have been reported the bubble collapse by the ultrasonic followed by the microbubble generation, and the 45 kHz of ultrasonic frequency could interact with microbubble, new small cavitation bubbles are formed [18], from this viewpoint, this phenomena can increase the amount of microbubble which was enhanced cell wall disruption that can increase CPC transfer in liquid salt solvent. Nevertheless, the effect of various ultrasonic frequency in the present study is not clearly given, it is only relevant to their work that is 45 kHz of ultrasonic frequency can form new small microbubble and 28 kHz and 100 kHz can be reduced the hot-spot created by the collapse of cavitation bubble [8,18].…”

Section: Effect Of Ultrasonic Frequencymentioning

confidence: 86%

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Effect of Combined Between Microbubble and Ultrasonic of C-Phycocyanin Extraction From S. Platensis

Thaisamak¹,

Jaturonglumlert²,

Varith³

et al. 2020

GEOMATE

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The aims of this work were to approve the performance of the combination between microbubble and ultrasonic with controlled temperature on CPC extraction from S. platensis. The influence of microbubble combined with ultrasonic and controlled temperature (MBUT) was investigated under various ultrasonic frequency (28, 45, 100 kHz), various of microbubble size (30, 40, 50 µm) and various of controlled temperature (308.15, 313.15, 318.15 K). This study suggested that MBUT employed reduce the extraction time, and improved extraction efficiency namely diffusion coefficient and enhancement factor. The diffusion coefficient obtained from experimental data was in the range of 1.959×10 -11 to 2.415×10 -11 m 2 .s -1 . The modified correlation was established based on theoretical diffusion in liquid (Stoke & Einstein equation). The correlation of solution viscosity as functions of microbubble size, ultrasonic frequency, and temperature was also established as an empirical model for calculating the viscosity using in the modified model. A good agreement between experimental data and the modified correlation predicted was achieved lower than 15% as the reported of %Error. Thus, these combination techniques were found to be effective for the extraction of CPC from wet S. platensis and this technique can be employed for other bioactive compounds.

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Section: Effect Of Ultrasonic Frequencymentioning

confidence: 86%

“…Using microbubble is not extensive in extraction process. Masuda et al (2015) studied the combination between microbubble and various frequency of ultrasonic to suppressed free radical formation in aqueous solution [8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Combined Between Microbubble and Ultrasonic of C-Phycocyanin Extraction From S. Platensis

Thaisamak¹,

Jaturonglumlert²,

Varith³

et al. 2020

GEOMATE

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“…Kodama et al (13) demonstrated that it can significantly improve transfection efficiency in vivo . Furthermore, the study conducted by Masuda et al (14) also pointed out that the use of ultrasound contrast agents has no toxic side effects on the human body. Compared with viral vectors, this safety problem can be solved.…”

Section: Discussionmentioning

confidence: 98%

Effect of STAT3 decoy oligodeoxynucleotides mediated by ultrasound-targeted microbubbles combined with ultrasound on the growth of squamous cell carcinoma of the esophagus

Zhang

Fan

et al. 2018

Oncol Lett

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Effect of STAT3 decoy oligodeoxynucleotides (ODN) transduced by ultrasound microbubbles combined with ultrasound on the growth of esophageal squamous cell carcinoma and its mechanism were analyzed. EC9706 cells were cultured in vitro and divided into four groups: group E (ultrasound microbubble + ultrasound irradiation), group P (liposome + ultrasound irradiation), group C (ultrasound), and group CC (ultrasound microbubbles). Mutant ODNs were used in groups E and P and the control group was group EC and PC, respectively. Immunofluorescence assay and flow cytometry were used to detect the transfection efficiency of each group. MTT colorimetric assay was performed to analyze the inhibition rate in each group. The effect of STAT3 decoy ODN on the proliferation of esophageal squamous carcinoma cells was calculated. Revese transcription-quantitative PCR (RT-qPCR) and western blotting were performed to detect the expression of the STAT signaling pathway downstream of gene expression levels. The model of subcutaneous transplantation of nude mice was used to show the effect of different transfections and STAT3 decoy ODN on the weight and volume of the transplanted tumor in mice. The cell inhibition rate was higher in group E than in groups P (F=8.382, P<0.001) and CC (F=6.469, P<0.001). Compared with groups EC, PC and C, respectively, the mRNA expression of STAT3, bcl-xL and Cyclin D1 decreased in groups E, P and CC (F=5.328, P<0.001). The weight and volume of nude mice in groups E, P and CC exhibited an inhibitory effect on the weight and volume of nude mice. Ultrasound irradiation combined with ultrasound microbubbles is an effective transfection method. The transfection of STAT3 decoy ODN can significantly inhibit the activity of esophageal squamous cell carcinoma cells and enhance apoptosis of cells, which has potential clinical value.

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“…Moreover, KO 2 was responsible for doping BN sheets with oxygen forming B−O bonds . The hydroxyl radicals formed during the ultrasonication could be involved in scissoring BN sheets into smaller size . Therefore, strong oxidants like KO 2 and HO .…”

Section: Figurementioning

confidence: 99%

White Graphene undergoes Peroxidase Degradation

et al. 2016

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Hexagonal boron nitride (hBN) nanosheets are emerging as promising 2D materials for different types of applications. However, biodegradation of hBN materials is poorly explored owing to their high chemical inertness and strong oxidation resistance. The assessment of oxidation/biodegradation of hBN is important in developing biomedical tools. Herein, we report the first study on the biodegradability of hBN nanosheets comparing the enzymatic catalysis of two different peroxidases, horseradish peroxidase (HRP) and human myeloperoxidase (MPO), with the photo‐Fenton (P.F.) reaction. The results show that degradation of hBN nanosheets is different to that of graphene and graphene oxide, since partial oxidation was found using MPO after 35 h, while HRP failed to degrade hBN up to 60 days. Nearly complete oxidation/degradation was occurred by P.F. reaction in 100 h. These results are helpful in designing advanced conjugates for biomedical uses of hBN.

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Influence of Microbubbles on Free Radical Generation by Ultrasound in Aqueous Solution: Dependence of Ultrasound Frequency

Cited by 50 publications

References 27 publications

Effect of Combined Between Microbubble and Ultrasonic of C-Phycocyanin Extraction From S. Platensis

Effect of Combined Between Microbubble and Ultrasonic of C-Phycocyanin Extraction From S. Platensis

Effect of STAT3 decoy oligodeoxynucleotides mediated by ultrasound-targeted microbubbles combined with ultrasound on the growth of squamous cell carcinoma of the esophagus

White Graphene undergoes Peroxidase Degradation

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