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Abbasi M, Yazdanirad S, Dehdarirad H, Hughes D. Noise exposure and the risk of cancer: a comprehensive systematic review. REVIEWS ON ENVIRONMENTAL HEALTH 2023; 38:713-726. [PMID: 36064622 DOI: 10.1515/reveh-2022-0021] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Accepted: 08/14/2022] [Indexed: 06/15/2023]
Abstract
The association between noise exposure and increased risk of cancer has received little attention in the field of research. Therefore, the goal of this study was to conduct a systematic review on the relationship between noise exposure and the incidence of cancer in humans. In this study, four electronic bibliographic databases including Scopus, PubMed, Web of Science, and Embase were systematically searched up to 21 April 2022. All types of noise exposure were considered, including environmental noise, occupational noise, and leisure or recreational noise. Furthermore, all types of cancers were studied, regardless of the organs involved. In total, 1836 articles were excluded on the basis of containing exclusion criteria or lacking inclusion criteria, leaving 19 articles retained for this study. Five of nine case-control studies showed a significant relationship between occupational or leisure noise exposure and acoustic neuroma. Moreover, four of five case-control and cohort studies indicated statistically significant relationships between environmental noise exposure and breast cancer. Of other cancer types, two case-control studies highlighted the risk of Hodgkin and non-Hodgkin lymphoma and two cohort studies identified an increased risk of colon cancer associated with environmental noise exposure. No relationship between road traffic and railway noise and the risk of prostate cancer was observed. In total, results showed that noise exposure, particularly prolonged and continuous exposure to loud noise, can lead to the incidence of some cancers. However, confirmation of this requires further epidemiological studies and exploration of the exact biological mechanism and pathway for these effects.
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Affiliation(s)
- Milad Abbasi
- Occupational Health Engineering, Social Determinants of Health Research Center, Saveh University of Medical Sciences, Saveh, Iran
| | - Saeid Yazdanirad
- School of Health, Shahrekord University of Medical Sciences, Shahrekord, Iran
- Social Determinants of Health Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Hossein Dehdarirad
- Medical Library & Information Sciences, School of Allied Medical Sciences, Tehran University of Medical Sciences, Tehran, Iran
| | - Debra Hughes
- Department of Health Research Methods, Evidence, and Impact, Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
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2
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Chen X, Cvetkovic D, Chen L, Ma CM. An in-vivo study of the combined therapeutic effects of pulsed non-thermal focused ultrasound and radiation for prostate cancer. Int J Radiat Biol 2023; 99:1716-1723. [PMID: 37191462 DOI: 10.1080/09553002.2023.2214204] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 05/10/2023] [Indexed: 05/17/2023]
Abstract
PURPOSE The purpose of this study was to investigate the in vivo combined effects of pulsed focused ultrasound (pFUS) and radiation (RT) for prostate cancer treatment. MATERIALS AND METHODS An animal prostate tumor model was developed by implanting human LNCaP tumor cells in the prostates of nude mice. Tumor-bearing mice were treated with pFUS, RT or both (pFUS + RT) and compared with a control group. Non-thermal pFUS treatment was delivered by keeping the body temperature below 42 °C as measured real-time by MR thermometry and using a pFUS protocol (1 MHz, 25 W focused ultrasound; 1 Hz pulse rate with a 10% duty cycle for 60 sec for each sonication). Each tumor was covered entirely using 4-8 sonication spots. RT treatment with a dose of 2 Gy was delivered using an external beam (6 MV photon energy with dose rate 300MU/min). Following the treatment, mice were scanned weekly with MRI for tumor volume measurement. RESULTS The results showed that the tumor volume in the control group increased exponentially to 142 ± 6%, 205 ± 12%, 286 ± 22% and 410 ± 33% at 1, 2, 3 and 4 weeks after treatment, respectively. In contrast, the pFUS group was 29% (p < 0.05), 24% (p < 0.05), 8% and 9% smaller, the RT group was 7%, 10%, 12% and 18% smaller, and the pFUS + RT group was 32%, 39%, 41% and 44% (all with p < 0.05) smaller than the control group at 1, 2, 3, and 4 weeks post treatment, respectively. Tumors treated by pFUS showed an early response (i.e. the first 2 weeks), while the RT group showed a late response. The combined pFUS + RT treatment showed consistent response throughout the post-treatment weeks. CONCLUSIONS These results suggest that RT combined with non-thermal pFUS can significantly delay the tumor growth. The mechanism of tumor cell killing between pFUS and RT may be different. Pulsed FUS shows early tumor growth delay, while RT contributes to the late effect on tumor growth delay. The addition of pFUS to RT significantly enhanced the therapeutic effect for prostate cancer treatment.
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Affiliation(s)
- Xiaoming Chen
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Dusica Cvetkovic
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - Lili Chen
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA
| | - C-M Ma
- Department of Radiation Oncology, Fox Chase Cancer Center, Philadelphia, PA, USA
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Ma Y, Akiyama I. Mechanical force induced DNA double-strand breaks: Ultrasound. Enzymes 2022; 51:53-63. [PMID: 36336408 DOI: 10.1016/bs.enz.2022.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Since the application of ultrasound for clinical diagnosis and therapeutic purposes has been increased rapidly, the effects of exposure to ultrasound on DNA molecules were studied. In this chapter, we introduced various effects of DNA damages caused by different conditions of exposure of ultrasound. Ultrasound with different sound pressure and pulse transmission conditions have been applied in our study. We discussed the threshold of sound pressure of ultrasound-induced DNA damages. Different kinds of pulses of ultrasound and microbubbles' influences on DNA double-strand breaks were also shown.
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Affiliation(s)
- Yue Ma
- Faculty of Life and Medical Science, Doshisha University, Kyotanabe, Japan; Institute of Biomedical Engineering, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China.
| | - Iwaki Akiyama
- Faculty of Life and Medical Science, Doshisha University, Kyotanabe, Japan
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Ma Y, Ishihara K, Yoshida K, Akiyama I, Yoshikawa K. Double-strand breaks in genome-sized DNA caused by megahertz ultrasound. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA 2021; 150:241. [PMID: 34340483 DOI: 10.1121/10.0005539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Accepted: 06/16/2021] [Indexed: 06/13/2023]
Abstract
Double-strand breaks (DSBs) of giant DNA molecules after exposure to 1.0 MHz pulsed-wave ultrasound were quantitatively evaluated by single-molecule observation of giant DNA (T4 GT7 DNA; 166 kbp) through fluorescence microscopy. Aqueous solutions of DNA were exposed to ultrasonic waves with different sound pressures, repetition periods (1, 2, 5 ms), and pulse durations (5, 10, 50 μs). Below a threshold value of sound pressure, almost no double-strand breaks were generated, and above the threshold, the degree of damage increased in an accelerated manner as the pressure increased. DNA damage was much more severe for exposure to ultrasound with a shorter pulse duration. In addition, a longer pulse repetition period caused worse damage in DNA molecules. The effect of microbubbles on the damage induced by exposure to ultrasound had also been studied. While a result showed that a very small amount of microbubbles increased DSBs of DNA, this effect of microbubbles only weakly depended on their concentrations.
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Affiliation(s)
- Yue Ma
- Faculty of Life and Medical Science, Doshisha University, Kyotanabe, 6100394, Japan
| | - Kazuya Ishihara
- Faculty of Science and Engineering, Doshisha University, Kyotanabe, 6100394, Japan
| | - Kenji Yoshida
- Center for Frontier Medical Engineering, Chiba University, Chiba, 2638522, Japan
| | - Iwaki Akiyama
- Faculty of Life and Medical Science, Doshisha University, Kyotanabe, 6100394, Japan
| | - Kenichi Yoshikawa
- Faculty of Life and Medical Science, Doshisha University, Kyotanabe, 6100394, Japan
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Koibuchi H, Fujii Y, Sato’o Y, Mochizuki T, Yamada T, Cui L, Taniguchi N. Inhibitory effects of ultrasound irradiation on Staphylococcus epidermidis biofilm. J Med Ultrason (2001) 2021; 48:439-448. [PMID: 34410547 PMCID: PMC8578078 DOI: 10.1007/s10396-021-01120-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 07/02/2021] [Indexed: 01/01/2023]
Abstract
PURPOSE We aimed to investigate whether low-intensity continuous and pulsed wave ultrasound (US) irradiation can inhibit the formation of Staphylococcus epidermidis biofilms, for potential application in the treatment of catheter-related bloodstream infections (CRBSI). METHODS S. epidermidis biofilms that formed on the bottom surfaces of 6-well plates were irradiated on the bottom surface using the sound cell incubator system for different intervals of time. RESULTS US irradiation with continuous waves for 24 h notably inhibited biofilm formation (p < 0.01), but the same US irradiation for 12 h had no remarkable effect. Further, double US irradiation with pulsed waves for 20 min inhibited biofilm formation by 33.6%, nearly two-fold more than single US irradiation, which reduced it by 17.9%. CONCLUSION US irradiation of a lower intensity (ISATA = 6-29 mW/cm2) than used in a previous study and lower than recommended by the Food and Drug Administration shows potential for preventing CRBSI caused by bacterial biofilms.
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Affiliation(s)
- Harumi Koibuchi
- Department of Clinical Laboratory Medicine, Jichi Medical University, 3311-1 Yakushiji Shimotsuke-Shi, Tochigi, 329-0498 Japan
| | - Yasutomo Fujii
- Department of Human Health Science, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yusuke Sato’o
- Division of Bacteriology, Department of Infection and Immunity, Jichi Medical University, Tochigi, Japan
| | | | - Toshiyuki Yamada
- Department of Clinical Laboratory Medicine, Jichi Medical University, 3311-1 Yakushiji Shimotsuke-Shi, Tochigi, 329-0498 Japan
| | - Longzhu Cui
- Division of Bacteriology, Department of Infection and Immunity, Jichi Medical University, Tochigi, Japan
| | - Nobuyuki Taniguchi
- Department of Clinical Laboratory Medicine, Jichi Medical University, 3311-1 Yakushiji Shimotsuke-Shi, Tochigi, 329-0498 Japan
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Udroiu I, Coluzzi E, Bedini A, Giliberti C, Palomba R, Sgura A. In vitro effects of 1-MHz ultrasound on the mitotic spindle. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2019; 60:568-575. [PMID: 30942920 DOI: 10.1002/em.22287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/01/2019] [Accepted: 03/13/2019] [Indexed: 06/09/2023]
Abstract
The effects of ultrasound on the cytoskeleton, comprising microtubules, had been studied decades ago. Nonetheless, very little attention has been paid to the effects of ultrasound on the mitotic spindle, which is also formed by microtubules. In this study, we treated human fibroblasts and human cancer cells (HeLa and MCF-7) with 1-MHz ultrasound at low intensities (70, 140, and 300 mW/cm2 ). In all cell lines, 5 min after the end of sonication, we found an intensity-dependent increase of mitotic abnormalities (including multipolar spindles). Two hours after sonication, these abnormalities were present, but at much lower frequencies. Twenty-four hours after sonication, mitotic abnormalities were at the same level of untreated samples, suggesting a transient effect due to ultrasound. Beside abnormalities of the mitotic spindle, we also observed an increase of metaphases with nonaligned chromosomes. The mitotic index of fibroblasts and HeLa cells, two hours after sonication, showed an intensity-dependent decrease; this was not observed in MCF-7 cells. In agreement with this last result, ultrasound-induced growth inhibition (which was also intensity-dependent) was more marked in fibroblasts and HeLa cells compared to MCF-7 cells. This work indicates that therapeutic ultrasound, even at intensities below the cavitation threshold, can affect genome integrity, showing the need to increase the knowledge of the potential risks of ultrasound to human health. Environ. Mol. Mutagen. 2019. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- Ion Udroiu
- Dipartimento di Scienze, Università Roma Tre, Rome, Italy
| | - Elisa Coluzzi
- Dipartimento di Scienze, Università Roma Tre, Rome, Italy
| | - Angelico Bedini
- Inail, Istituto Nazionale Assicurazione Infortuni sul Lavoro, Rome, Italy
| | - Claudia Giliberti
- Inail, Istituto Nazionale Assicurazione Infortuni sul Lavoro, Rome, Italy
| | - Raffaele Palomba
- Inail, Istituto Nazionale Assicurazione Infortuni sul Lavoro, Rome, Italy
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Udroiu I, Marinaccio J, Bedini A, Giliberti C, Palomba R, Sgura A. Genomic damage induced by 1-MHz ultrasound in vitro. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2018; 59:60-68. [PMID: 28833460 DOI: 10.1002/em.22124] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 06/16/2017] [Accepted: 07/18/2017] [Indexed: 06/07/2023]
Abstract
Genotoxic effects of therapeutic ultrasound are poorly documented, when compared with the wide use of this physical agent. The aim of this work was to investigate the clastogenic and aneugenic potential of 1 MHz ultrasound, employing intensities (200 and 300 mW/cm2 ) above the cavitational threshold, but in the range of those normally used in therapeutics. Both normal fibroblasts (AG01522) and tumoral cells (MCF-7) were sonicated. While no effects on viability were noted, significant increases of CREST-negative micronuclei (indicative of clastogenesis) and CREST-positive micronuclei (indicative of aneuploidy) were detected. Clastogenesis was confirmed by increases of γ-H2AX foci, while increases of spindle anomalies confirmed the induction of aneuploidy. Our results confirm previous works that showed ultrasound-induced DNA breakage. Moreover, our experiments show that the known effect of ultrasound-induced damage to microtubules is also able to damage the mitotic spindle and induce aneuploidy. On the overall, this work highlights the importance to further investigate the potential risks related to therapeutics US. Environ. Mol. Mutagen. 59:60-68, 2018. © 2017 Wiley Periodicals, Inc.
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Affiliation(s)
- Ion Udroiu
- Dipartimento di Scienze, Universita Roma Tre, Rome, Italy
| | | | - Angelico Bedini
- Inail, Istituto Nazionale Assicurazione Infortuni sul Lavoro, Rome, Italy
| | - Claudia Giliberti
- Inail, Istituto Nazionale Assicurazione Infortuni sul Lavoro, Rome, Italy
| | - Raffaele Palomba
- Inail, Istituto Nazionale Assicurazione Infortuni sul Lavoro, Rome, Italy
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8
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Koibuchi H, Fujii Y, Hirai Y, Mochizuki T, Masuda K, Kotani K, Yamada T, Taniguchi N. Effect of ultrasonic irradiation on bacterial biofilms. J Med Ultrason (2001) 2017; 45:25-29. [DOI: 10.1007/s10396-017-0801-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2016] [Accepted: 05/16/2017] [Indexed: 11/24/2022]
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9
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Apoptotic and genotoxic effects of low-intensity ultrasound on healthy and leukemic human peripheral mononuclear blood cells. J Med Ultrason (2001) 2017; 45:31-39. [DOI: 10.1007/s10396-017-0805-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Accepted: 06/05/2017] [Indexed: 12/31/2022]
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10
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Moghaddam ZH, Mokhtari-Dizaji M, Movahedin M, Ravari ME. Estimation of the distribution of low-intensity ultrasound mechanical index as a parameter affecting the proliferation of spermatogonia stem cells in vitro. ULTRASONICS SONOCHEMISTRY 2017; 37:571-581. [PMID: 28427670 DOI: 10.1016/j.ultsonch.2017.02.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2016] [Revised: 02/11/2017] [Accepted: 02/11/2017] [Indexed: 06/07/2023]
Abstract
Considering the use of physical and mechanical stimulation, such as low-intensity ultrasound for proliferation and differentiation of stem cells, it is essential to understand the physical and acoustical mechanisms of acoustic waves in vitro. Mechanical index is used for quantifying acoustic cavitation and the relationship between acoustic pressure and the frequency. In this study, modeling of the mechanical index was applied to provide treatment protocol and to understand the effective physical processes on reproducibility of stem cells. Due to low intensity of ultrasound, Rayleigh integral model has been used for acoustic pressure computation. The acoustic pressure and mechanical index equations are modeled and solved to estimate optimal mechanical index for 28, 40, 150kHz and 1MHz frequencies. This model are solved in different intensities and distances from transducer in cylindrical coordinates. Based on the results of the mechanical index, regions with threshold mechanical index of 0.7 were identified for extracting of radiation arrangement to cell medium. Acoustic pressure distribution along the axial and radial was extracted. In order to validate the results of the modeling, the acoustic pressure in the water and near field depth was measured by a piston hydrophone. Results of modeling and experiments show that the model is consistent well to experimental results with 0.91 and 0.90 correlation of coefficient (p<0.05) for 1MHz and 40kHz. Low-intensity ultrasound with 0.40 mechanical index is more effective on enhancing the proliferation rate of the spermatogonia stem cells during the seven days of culture. In contrast, higher mechanical index has a harmful effect on the spermatogonial stem cells. Thus, considering cavitation threshold of different materials is necessary to find effective mechanical index ranges on proliferation for the used frequencies. This acoustic propagation model and ultrasound mechanical index assessments can be used with acceptable accuracy, for the extraction special arrangement of acoustic exposure used in biological conditions in vitro. This model provides proper treatment planning in vitro and in vivo by estimating the cavitation phenomenon.
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Affiliation(s)
| | - Manijhe Mokhtari-Dizaji
- Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Iran.
| | - Mansoureh Movahedin
- Department of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
| | - Mohammad Ehsan Ravari
- Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Iran
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Wu SK, Chiang CF, Hsu YH, Liou HC, Fu WM, Lin WL. Pulsed-wave low-dose ultrasound hyperthermia selectively enhances nanodrug delivery and improves antitumor efficacy for brain metastasis of breast cancer. ULTRASONICS SONOCHEMISTRY 2017; 36:198-205. [PMID: 28069201 DOI: 10.1016/j.ultsonch.2016.11.033] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/09/2016] [Revised: 11/25/2016] [Accepted: 11/26/2016] [Indexed: 06/06/2023]
Abstract
The clinical application of chemotherapeutics for brain tumors remains a challenge due to limitation of blood-brain barrier/blood-tumor barrier (BBB/BTB). In this study, we investigated the effects of low-dose focused ultrasound hyperthermia (UH) on the delivery and therapeutic efficacy of pegylated liposomal doxorubicin (PLD) for brain metastasis of breast cancer. Murine breast cancer cells (4T1-luc2) expressing firefly luciferase were implanted into mouse striatum as a brain tumor model. The mice were intravenously injected with PLD with/without transcranial pulsed-wave/continuous-wave UH (pUH/cUH) treatment on day-6 after tumor implantation. pUH (frequency: 500kHz, PRF: 1000Hz, duty cycle: 50%) was conducted under equal acoustic power (2.2-Watt) and sonication duration (10-min) as cUH. The amounts of doxorubicin accumulated in the normal brain and tumor tissues were measured with fluorometry. The tumor growth responses for the control, pUH, PLD, PLD+cUH, and PLD+pUH groups were evaluated with IVIS. The PLD distribution and cell apoptosis were assessed with immunofluorescence staining. The results showed that pUH significantly enhanced the PLD delivery into brain tumors and the tumor growth was further inhibited by PLD+pUH without damaging the sonicated normal brain tissues. This indicates that low-dose transcranial pUH is a promising method to selectively enhance nanodrug delivery and improve the brain tumor treatment.
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Affiliation(s)
- Sheng-Kai Wu
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Chi-Feng Chiang
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan
| | - Yu-Hone Hsu
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan; Department of Neurosurgery, Cheng-Hsin General Hospital, Taipei, Taiwan
| | - Houng-Chi Liou
- Institute of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Wen-Mei Fu
- Institute of Pharmacology, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Win-Li Lin
- Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan; Institute of Biomedical Engineering and Nanomedicine, National Health Research Institutes, Miaoli, Taiwan.
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Kubota R, Yamashita Y, Kenmotsu T, Yoshikawa Y, Yoshida K, Watanabe Y, Imanaka T, Yoshikawa K. Double-Strand Breaks in Genome-Sized DNA Caused by Ultrasound. Chemphyschem 2017; 18:959-964. [PMID: 28170150 PMCID: PMC5413823 DOI: 10.1002/cphc.201601325] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Indexed: 11/10/2022]
Abstract
DNA double-strand breaks (DSBs) caused by ultrasound were evaluated in a quantitative manner by single-molecule fluorescence microscopy. We compared the effect of time-interval (or pulse) sonication to that of continuous wave (CW) sonication at a fixed frequency of 30 kHz. Pulses caused fewer DSBs than CW sonication under the same total input ultrasound energy when the pulse repetition period was above the order of a second. In contrast, pulses caused more DSBs than CW sonication for pulse widths shorter than a second. These effect of ultrasound on DNA were interpreted in terms of the time-dependent decay in the probability of breakage during the duration of a pulse. We propose a simple phenomenological model by considering a characteristic decay in the probability of DSBs during single-pulse sonication, which reproduces the essence of the experimental trend. In addition, a data analysis revealed a characteristic scaling behavior between the number of pulses and the number of DSBs.
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Affiliation(s)
- Rinko Kubota
- Faculty of Life and Medical Sciences, Doshisha University, Tatara-Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Yusuke Yamashita
- Faculty of Life and Medical Sciences, Doshisha University, Tatara-Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Takahiro Kenmotsu
- Faculty of Life and Medical Sciences, Doshisha University, Tatara-Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Yuko Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University, Tatara-Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Kenji Yoshida
- Center for Frontier Medical Engineering, Chiba University, Chiba, 263-0022, Japan
| | - Yoshiaki Watanabe
- Faculty of Life and Medical Sciences, Doshisha University, Tatara-Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
| | - Tadayuki Imanaka
- Research Organization of Science and Technology, Ritsumeikan University, Kusatsu, 525-8577, Japan
| | - Kenichi Yoshikawa
- Faculty of Life and Medical Sciences, Doshisha University, Tatara-Miyakodani, Kyotanabe, Kyoto, 610-0321, Japan
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Jawaid P, Rehman MU, Hassan MA, Zhao QL, Li P, Miyamoto Y, Misawa M, Ogawa R, Shimizu T, Kondo T. Effect of platinum nanoparticles on cell death induced by ultrasound in human lymphoma U937 cells. ULTRASONICS SONOCHEMISTRY 2016; 31:206-15. [PMID: 26964942 DOI: 10.1016/j.ultsonch.2015.12.013] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Revised: 12/17/2015] [Accepted: 12/17/2015] [Indexed: 05/19/2023]
Abstract
In this study, we report on the potential use of platinum nanoparticles (Pt-NPs), a superoxide dismutase (SOD)/catalase mimetic antioxidant, in combination with 1MHz ultrasound (US) at an intensity of 0.4 W/cm(2), 10% duty factor, 100 Hz PRF, for 2 min. Apoptosis induction was assessed by DNA fragmentation assay, cell cycle analysis and Annexin V-FITC/PI staining. Cell killing was confirmed by cell counting and microscopic examination. The mitochondrial and Ca(2+)-dependent pathways were investigated. Caspase-8 expression and autophagy-related proteins were detected by spectrophotometry and western blot analysis, respectively. Intracellular reactive oxygen species (ROS) elevation was detected by flow cytometry, while extracellular free radical formation was assessed by electron paramagnetic resonance spin trapping spectrometry. The results showed that Pt-NPs exerted differential effects depending on their internalization. Pt-NPs functioned as potent free radical scavengers when added immediately before sonication while pre-treatment with Pt-NPs suppressed the induction of apoptosis as well as autophagy (AP), and resulted in enhanced cell killing. Dead cells displayed the features of pyknosis. The exact mode of cell death is still unclear. In conclusion, the results indicate that US-induced AP may contribute to cell survival post sonication. To our knowledge this is the first study to discuss autophagy as a pro-survival pathway in the context of US. The combination of Pt-NPs and US might be effective in cancer eradication.
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Affiliation(s)
- Paras Jawaid
- Department of Radiological Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Mati Ur Rehman
- Department of Radiological Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Mariame Ali Hassan
- Department of Radiological Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan; Department of Pharmaceutics & Pharmaceutical Technology, University of Sharjah, Sharjah, United Arab Emirates; Department of Pharmaceutics & Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt
| | - Qing Li Zhao
- Department of Radiological Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Peng Li
- Department of Radiological Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Yusei Miyamoto
- Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Masaki Misawa
- Institute for Human Science and Biomedical Engineering, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki, Japan
| | - Ryohei Ogawa
- Department of Radiological Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Tadamichi Shimizu
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Takashi Kondo
- Department of Radiological Science, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan.
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