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Ngeow WC, Tan CC, Goh YC, Deliberador TM, Cheah CW. A Narrative Review on Means to Promote Oxygenation and Angiogenesis in Oral Wound Healing. Bioengineering (Basel) 2022; 9:636. [PMID: 36354548 PMCID: PMC9688034 DOI: 10.3390/bioengineering9110636] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Revised: 10/19/2022] [Accepted: 10/29/2022] [Indexed: 08/22/2023] Open
Abstract
Oral mucosa serves as the primary barrier against pathogen invasions, mechanical stresses, and physical trauma. Although it is generally composed of keratinocytes and held in place by desmosomes, it shows variation in tissue elasticity and surface keratinization at different sites of the oral cavity. Wound healing undergoes four stages of tissue change sequences, namely haemostasis, inflammation, proliferation, and remodelling. The wound healing of oral hard tissue and soft tissue is largely dependent on the inflammatory response and vascular response, which are the targets of many research. Because of a less-robust inflammatory response, favourable saliva properties, a unique oral environment, and the presence of mesenchymal stem cells, oral wounds are reported to demonstrate rapid healing, less scar formation, and fewer inflammatory reactions. However, delayed oral wound healing is a major concern in certain populations with autoimmune disorders or underlying medical issues, or those subjected to surgically inflicted injuries. Various means of approach have been adopted to improve wound tissue proliferation without causing excessive scarring. This narrative review reappraises the current literature on the use of light, sound, mechanical, biological, and chemical means to enhance oxygen delivery to wounds. The current literature includes the use of hyperbaric oxygen and topical oxygen therapy, ultrasounds, lasers, platelet-rich plasma (PRP)/platelet-rich fibrin (PRF), and various chemical agents such as hyaluronic acid, astaxanthin, and Centella asiatica to promote angiogenesis in oral wound healing during the proliferation process. The arrival of a proprietary oral gel that is reported to improve oxygenation is highlighted.
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Affiliation(s)
- Wei Cheong Ngeow
- Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Chuey Chuan Tan
- Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | - Yet Ching Goh
- Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
| | | | - Chia Wei Cheah
- Faculty of Dentistry, University of Malaya, Kuala Lumpur 50603, Malaysia
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Study on TiO2 Nanofilm That Reduces the Heat Production of Titanium Alloy Implant in Microwave Irradiation and Does Not Affect Fracture Healing. DISEASE MARKERS 2022; 2022:4910731. [PMID: 35465264 PMCID: PMC9020966 DOI: 10.1155/2022/4910731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Revised: 03/23/2022] [Accepted: 04/01/2022] [Indexed: 11/18/2022]
Abstract
Background Metal implants can produce heat and damage adjacent tissues under microwave irradiation, which makes local metal implants in the body a contraindication for microwave therapy. However, with the wide application of titanium alloy implants which have low permeability and low conductivity, this concept has been challenged. Our team members have confirmed through previous research that continuous low-power microwave irradiation does not cause thermal damage to the surrounding tissues of the titanium alloy. Is there any other way to further increase the dose of microwave irradiation while reducing the heat production of titanium alloy implants? In this study, the effect of TiO2 nanofilm on reducing the heat production of titanium alloy implants in microwave field was verified by animal experiments, and the effect of TiO2 nanofilm on fracture healing was observed. Methods 30 rabbits were selected. In the experiment of temperature measurement, 10 rabbits were randomly divided into experimental group (n = 5) and control group (n = 5), and the contralateral lower limb of the rabbits in experimental group was set as the sham operation group. The right femurs in the experimental group were implanted with Ti6Al4V plates coated with TiO2 nanofilm, and the right femurs in the control group were implanted with common titanium alloy plates without TiO2 nanofilm. The same surgical procedure was used in the sham operation group, but no plate was implanted. The temperature of the deep tissue above the metal implant was measured with an anti-interference thermocouple thermometer during 20 minutes of microwave irradiation. The other 20 rabbits were randomly divided into two groups, experimental group (n = 10) and control group (n = 10). The femoral shaft fracture models were established again. Ti6Al4V plates coated with TiO2 nanofilm and common titanium alloy plates were implanted in the two groups, respectively, and both groups were exposed to continuous microwave irradiation with a power of 40 W or 60 W for 30 days after operation. The fracture healing was evaluated by X-ray at 0 day, 14 days, and 30 days after microwave irradiation, respectively. The animals were sacrificed at 30 days after operation for histopathological assessment. Results The temperature in the experimental group, control group, and sham operation group increased significantly after 40 W and 60 W microwave irradiation (2.18 ± 0.15°C~6.02 ± 0.38°C). When exposed to 40 W microwave, the temperature rise of the control group was 4.0 ± 0.34°C, which was significantly higher than that of the experimental group 2.82 ± 0.15°C (P < 0.01) and the sham operation group 2.18 ± 0.33°C (P < 0.01). There was no significant difference in temperature rise between the experimental group and the sham operation group (P = 0.21). When exposed to 60 W microwave, the temperature rise of the control group was 6.02 ± 0.38°C, which was significantly higher than that of the experimental group 3.66 ± 0.14°C (P < 0.01) and sham operation group 2.96 ± 0.22°C (P < 0.01), and there was no significant difference between the experimental group and the sham operation group (P = 0.32). X-ray evaluation showed that there was no significant difference in callus maturity between the experimental group and the control group at 14 days (P = 0.554), but there was significant difference in callus maturity between the two groups at 30 days (P = 0.041). The analysis of bone histologic and histomorphometric data at 30 days was also consistent with this. Conclusion Under the animal experimental condition, compared with the common titanium alloy implant, the TiO2 nanofilm can reduce the heat production of the titanium alloy implant in the 2450 MHz microwave field and has no adverse effect on fracture healing. This study opens up a promising new idea for the application of microwave therapy to metal implants in human body.
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Uddin SMZ, Komatsu DE, Motyka T, Petterson S. Low-Intensity Continuous Ultrasound Therapies—A Systematic Review of Current State-of-the-Art and Future Perspectives. J Clin Med 2021; 10:2698. [PMID: 34207333 PMCID: PMC8235587 DOI: 10.3390/jcm10122698] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/10/2021] [Accepted: 06/14/2021] [Indexed: 01/02/2023] Open
Abstract
Therapeutic ultrasound has been studied for over seven decades for different medical applications. The versatility of ultrasound applications are highly dependent on the frequency, intensity, duration, duty cycle, power, wavelength, and form. In this review article, we will focus on low-intensity continuous ultrasound (LICUS). LICUS has been well-studied for numerous clinical disorders, including tissue regeneration, pain management, neuromodulation, thrombosis, and cancer treatment. PubMed and Google Scholar databases were used to conduct a comprehensive review of all research studying the application of LICUS in pre-clinical and clinical studies. The review includes articles that specify intensity and duty cycle (continuous). Any studies that did not identify these parameters or used high-intensity and pulsed ultrasound were not included in the review. The literature review shows the vast implication of LICUS in many medical fields at the pre-clinical and clinical levels. Its applications depend on variables such as frequency, intensity, duration, and type of medical disorder. Overall, these studies show that LICUS has significant promise, but conflicting data remain regarding the parameters used, and further studies are required to fully realize the potential benefits of LICUS.
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Affiliation(s)
- Sardar M. Z. Uddin
- Department of Orthopaedics and Rehabilitation, Stony Brook University, Stony Brook, NY 11794, USA;
| | - David E. Komatsu
- Department of Orthopaedics and Rehabilitation, Stony Brook University, Stony Brook, NY 11794, USA;
| | - Thomas Motyka
- Department of Osteopathic Manipulative Medicine, Campbell University, Buies Creek, NC 27506, USA;
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Sun L, Wang P, Zhang J, Sun Y, Sun S, Xu M, Zhang L, Wang S, Liang X, Cui L. Design and application of inorganic nanoparticles for sonodynamic cancer therapy. Biomater Sci 2021; 9:1945-1960. [PMID: 33522523 DOI: 10.1039/d0bm01875a] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review focus on the recent developments in inorganic nanomaterials for tumor SDT.
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Affiliation(s)
- Lihong Sun
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Ping Wang
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Jinxia Zhang
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Yang Sun
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Suhui Sun
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Menghong Xu
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Lulu Zhang
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Shumin Wang
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Xiaolong Liang
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
| | - Ligang Cui
- Department of Ultrasound
- Peking University Third Hospital
- Beijing 100191
- China
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Schibber EF, Mittelstein DR, Gharib M, Shapiro MG, Lee PP, Ortiz M. A dynamical model of oncotripsy by mechanical cell fatigue: selective cancer cell ablation by low-intensity pulsed ultrasound. PROCEEDINGS. MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2020. [PMID: 32398930 DOI: 10.1063/1.5128627] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
The method of oncotripsy, first proposed in Heyden & Ortiz (Heyden & Ortiz 2016 J. Mech. Phys. Solids 92, 164-175 (doi:10.1016/j.jmps.2016.04.016)), exploits aberrations in the material properties and morphology of cancerous cells in order to ablate them selectively by means of tuned low-intensity pulsed ultrasound. We propose the dynamical model of oncotripsy that follows as an application of cell dynamics, statistical mechanical theory of network elasticity and 'birth-death' kinetics to describe the processes of damage and repair of the cytoskeleton. We also develop a reduced dynamical model that approximates the three-dimensional dynamics of the cell and facilitates parametric studies, including sensitivity analysis and process optimization. We show that the dynamical model predicts-and provides a conceptual basis for understanding-the oncotripsy effect and other trends in the data of Mittelstein et al. (Mittelstein et al. 2019 Appl. Phys. Lett. 116, 013701 (doi:10.1063/1.5128627)), for cells in suspension, including the dependence of cell-death curves on cell and process parameters.
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Affiliation(s)
- E F Schibber
- Division of Engineering and Applied Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
| | - D R Mittelstein
- Division of Engineering and Applied Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
| | - M Gharib
- Division of Engineering and Applied Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
| | - M G Shapiro
- Division of Engineering and Applied Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
| | - P P Lee
- Department of Immuno-Oncology, City of Hope National Medical Center, 1500 E Duarte Road, Duarte, CA 91010, USA
| | - M Ortiz
- Division of Engineering and Applied Science, California Institute of Technology, 1200 East California Boulevard, Pasadena, CA 91125, USA
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Tabuchi Y, Hasegawa H, Suzuki N, Furusawa Y, Hirano T, Nagaoka R, Takeuchi SI, Shiiba M, Mochizuki T. Low-intensity pulsed ultrasound promotes the expression of immediate-early genes in mouse ST2 bone marrow stromal cells. J Med Ultrason (2001) 2020; 47:193-201. [PMID: 32026128 DOI: 10.1007/s10396-020-01007-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Accepted: 12/26/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE The effects of low-intensity pulsed ultrasound (LIPUS) on the expression of immediate-early genes (IEGs) in bone marrow stromal cells (BMSCs) were evaluated to elucidate the early cellular response to LIPUS. METHODS Mouse ST2 BMSCs were treated with LIPUS (ISATA, 12-34 mW/cm2 for 20 min), then cultured at 37 °C. The expression levels of four IEGs (Fos, Egr1, Jun, and Ptgs2) and ERK1/2, a mitogen-activated protein kinase/extracellular signal-regulated kinase (MAPK/ERK), were assessed using real-time quantitative PCR and Western blot analyses, respectively. RESULTS A single exposure of LIPUS at an intensity of 25 mW/cm2 significantly and transiently increased the expression levels of all four IEGs, and the peak expression was detected at 30-60 min after LIPUS stimulation. LIPUS exposure also significantly increased the phosphorylation level of ERK1/2. U0126, an inhibitor of MAPK/ERK, significantly prevented LIPUS-induced expression of Fos and Egr1, but not that of Jun and Ptgs2. On the other hand, treatment of the cells with LIPUS did not affect cell growth or alkaline phosphatase activity, a marker of osteoblast differentiation. CONCLUSION These results suggest that LIPUS exposure significantly induces expression of IEGs such as Fos and Egr1 via the MAPK/ERK pathway in ST2 BMSCs.
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Affiliation(s)
- Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan. .,Graduate School of Innovative Life Science, University of Toyama, Toyama, Japan.
| | - Hideyuki Hasegawa
- Graduate School of Science and Engineering, University of Toyama, Toyama, Japan
| | - Nobuo Suzuki
- Noto Marine Laboratory, Institute of Nature and Environmental Technology, Kanazawa University, Ishikawa, Japan
| | - Yukihiro Furusawa
- Department of Liberal Arts and Sciences, Toyama Prefectural University, Toyama, Japan
| | - Tetsushi Hirano
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, 2630 Sugitani, Toyama, 930-0194, Japan
| | - Ryo Nagaoka
- Graduate School of Science and Engineering, University of Toyama, Toyama, Japan
| | - Shin-Ichi Takeuchi
- Graduate School of Biomedical Engineering, Toin University of Yokohama, Yokohama, Japan
| | - Michihisa Shiiba
- Faculty of Health Sciences, Nihon Institute of Medical Science, Saitama, Japan
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Tharkar P, Varanasi R, Wong WSF, Jin CT, Chrzanowski W. Nano-Enhanced Drug Delivery and Therapeutic Ultrasound for Cancer Treatment and Beyond. Front Bioeng Biotechnol 2019; 7:324. [PMID: 31824930 PMCID: PMC6883936 DOI: 10.3389/fbioe.2019.00324] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 10/28/2019] [Indexed: 12/24/2022] Open
Abstract
While ultrasound is most widely known for its use in diagnostic imaging, the energy carried by ultrasound waves can be utilized to influence cell function and drug delivery. Consequently, our ability to use ultrasound energy at a given intensity unlocks the opportunity to use the ultrasound for therapeutic applications. Indeed, in the last decade ultrasound-based therapies have emerged with promising treatment modalities for several medical conditions. More recently, ultrasound in combination with nanomedicines, i.e., nanoparticles, has been shown to have substantial potential to enhance the efficacy of many treatments including cancer, Alzheimer disease or osteoarthritis. The concept of ultrasound combined with drug delivery is still in its infancy and more research is needed to unfold the mechanisms and interactions of ultrasound with different nanoparticles types and with various cell types. Here we present the state-of-art in ultrasound and ultrasound-assisted drug delivery with a particular focus on cancer treatments. Notably, this review discusses the application of high intensity focus ultrasound for non-invasive tumor ablation and immunomodulatory effects of ultrasound, as well as the efficacy of nanoparticle-enhanced ultrasound therapies for different medical conditions. Furthermore, this review presents safety considerations related to ultrasound technology and gives recommendations in the context of system design and operation.
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Affiliation(s)
- Priyanka Tharkar
- Faculty of Medicine and Health, Sydney School of Pharmacy, Sydney Nano Institute, The University of Sydney, Camperdown, NSW, Australia
| | - Ramya Varanasi
- Faculty of Medicine and Health, Sydney School of Pharmacy, Sydney Nano Institute, The University of Sydney, Camperdown, NSW, Australia
| | - Wu Shun Felix Wong
- School of Women's and Children's Health, University of New South Wales, Sydney, NSW, Australia
| | - Craig T Jin
- Faculty of Engineering, School of Electrical and Information Engineering, The University of Sydney, Sydney, NSW, Australia
| | - Wojciech Chrzanowski
- Faculty of Medicine and Health, Sydney School of Pharmacy, Sydney Nano Institute, The University of Sydney, Camperdown, NSW, Australia
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Tsuruoka N, Katayama S, Seki T, Matsunaga T, Iijima R, Haga Y. Focused Ultrasound PC-6 Stimulation Effects on Blood Flow Volume, Skin Temperature, and Coldness of the Finger and Toe. Complement Med Res 2019; 26:404-409. [DOI: 10.1159/000501149] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 05/22/2019] [Indexed: 11/19/2022]
Abstract
Introduction: Focused ultrasound can stimulate a specific point of tissue and can be a noninvasive method for acupoint stimulation. The aim of this study was to clarify the effects of acupoint stimulation by focused ultrasound on blood flow volume and coldness of the fingers and toes. Materials and Methods: Forty healthy volunteers were included in this experiment. The blood flow volume and the skin temperature of a finger and toe were measured before and after stimulation of the pericardium 6 acupuncture point (PC-6) by focused ultrasound. Subjective coldness of the fingers and toes was also assessed using a visual analog scale (VAS) before and after stimulation. Results: The maximum blood flow volumes of the finger and toe were significantly larger (p < 0.01) than those before stimulation. The maximum skin surface temperatures of the fingers were significantly higher (p < 0.01) than those before stimulation. The VAS scores for subjective coldness of the toes after stimulation were significantly higher (p < 0.01). Conclusion: The blood flow volume and skin temperature tended to increase after PC-6 stimulation. The VAS scores also indicated a tendency toward a warmer sensation in the toes after stimulation.
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Noninvasive sub-organ ultrasound stimulation for targeted neuromodulation. Nat Commun 2019; 10:952. [PMID: 30862827 PMCID: PMC6414607 DOI: 10.1038/s41467-019-08750-9] [Citation(s) in RCA: 105] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Accepted: 01/22/2019] [Indexed: 12/20/2022] Open
Abstract
Tools for noninvasively modulating neural signaling in peripheral organs will advance the study of nerves and their effect on homeostasis and disease. Herein, we demonstrate a noninvasive method to modulate specific signaling pathways within organs using ultrasound (U/S). U/S is first applied to spleen to modulate the cholinergic anti-inflammatory pathway (CAP), and US stimulation is shown to reduce cytokine response to endotoxin to the same levels as implant-based vagus nerve stimulation (VNS). Next, hepatic U/S stimulation is shown to modulate pathways that regulate blood glucose and is as effective as VNS in suppressing the hyperglycemic effect of endotoxin exposure. This response to hepatic U/S is only found when targeting specific sub-organ locations known to contain glucose sensory neurons, and both molecular (i.e. neurotransmitter concentration and cFOS expression) and neuroimaging results indicate US induced signaling to metabolism-related hypothalamic sub-nuclei. These data demonstrate that U/S stimulation within organs provides a new method for site-selective neuromodulation to regulate specific physiological functions. Stimulation of peripheral nerve activity may be used to treat metabolic and inflammatory disorders, but current approaches need implanted devices. Here, the authors present a non-invasive approach, and show that ultrasound-mediated stimulation can be targeted to specific sub-organ locations in preclinical models and alter the response of metabolic and inflammatory neural pathways.
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He LL, Wu XX, Wang YX, Liu XP, Song YL, Yang YJ, Gao YP, Wang X, Liu B, Wang X. Spectroscopic investigation on the sonodynamic damage to protein in the presence of eosine B. ULTRASONICS SONOCHEMISTRY 2015; 26:93-98. [PMID: 25682464 DOI: 10.1016/j.ultsonch.2015.02.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 02/01/2015] [Accepted: 02/01/2015] [Indexed: 06/04/2023]
Abstract
In this work, bovine serum albumin (BSA) and eosine B (EB) were selected as a model protein and sonosensitizer, respectively. The sonodynamic damage to protein in the presence of EB and its mechanism were studied by means of absorption and fluorescence spectra. The results indicated that the synergistic effects of ultrasound and EB can efficiently damage the BSA molecules, and the damage of protein could be mainly due to the generation of reactive oxygen species (ROS). The damage degree of protein increased with the increase of ultrasonic time and EB concentration because of the increased quantities of ROS. Hydroxyl free radical (OH) was the major mediators of the ultrasound-inducing proteins damage in the presence of EB. In addition, the quantities of ROS from the diphenylcarbazide (DPCI)-EB solutions and the DPCI-fluorescein (FS) solutions with or without ROS scavengers were contrasted, respectively. The results show that FS mainly produce OH, but the quantities of ROS in the presence of FS were lower than those of EB, which indicates that the nitro and bromine substituent groups on the benzene ring of FS increase the quantity of ROS, but do not change the kinds of ROS.
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Affiliation(s)
- Ling-Ling He
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Xiao-Xia Wu
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Yong-Xia Wang
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Xian-Ping Liu
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Yan-Ling Song
- College of Pharmaceutical and Biological Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Yan-Jie Yang
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Yan-Ping Gao
- College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 110142, China
| | - Xin Wang
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Bin Liu
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China
| | - Xin Wang
- School of Pharmaceutical Sciences, Liaoning University, Shenyang 110036, China.
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Yousefian B, Firoozabadi SM, Mokhtari-Dizaji M. Sonochemotherapy of breast adenocarcinoma: an experimental in vivo model. J Ultrasound 2015; 18:165-71. [PMID: 26191104 PMCID: PMC4504854 DOI: 10.1007/s40477-014-0120-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Accepted: 02/12/2014] [Indexed: 11/13/2022] Open
Abstract
Purpose Because the cytotoxic potential of hydrophilic drugs like bleomycin (BLM) is restricted by its low membrane permeability, the application of low-intensity ultrasound (US) on growing tumor cells enhances intracellular delivery of BLM after intratumoral administration, thereby potentiating its cytotoxicity. In the present study, the in vivo cell membrane permeability enhancement with US (1 MHz, 2, 5, and 10 min, ISPTA = 2 W/cm2) is compared with the murine model of breast adenocarcinoma in BALB/c mice. Methods Tumor induction was performed through a homograft surgery procedure. Mice were anesthetized before putting them in sonication situations. Sonications were done in an aquarium. Seven groups of the tumor-bearing mice, each consisting of eight mice, were sonicated without or after intratumoral injection of 0.1 ml BLM at different exposure times. The tumor volume was evaluated to assess the growth process by use of a digital caliper. Results The results show that the BLM control group has a significant difference with BLM plus 10 min US on day 2 (p < 0.05). There is a significant difference between 2- and 10-min sonication on days 8 and 10 also. The difference between the Only US group and the other groups except Sham US was significant too (p < 0.05). Significant differences were seen only between the BLM plus US groups with Sham US and Only US control groups. Conclusion It has been concluded that for significant permeabilization of the cell membrane, sonication time for more than 10 min is required. Significant difference between the Only US and other groups indicates that US has a promoting effect on cell division procedure, in spite of the no-carcinogen effect of the US.
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Affiliation(s)
| | | | - Manijhe Mokhtari-Dizaji
- Department of Medical Physics, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
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Phillips RA, Stratmeyer ME, Harris GR. Safety and U.S. Regulatory considerations in the nonclinical use of medical ultrasound devices. ULTRASOUND IN MEDICINE & BIOLOGY 2010; 36:1224-1228. [PMID: 20447750 DOI: 10.1016/j.ultrasmedbio.2010.03.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2009] [Revised: 03/15/2010] [Accepted: 03/31/2010] [Indexed: 05/29/2023]
Abstract
Ultrasound imaging has been used for medical purposes for over 50 years and has an excellent safety record. Ultrasonic fetal scanning is generally considered safe and is properly used when medical information on a pregnancy is needed. However, ultrasound energy delivered to the fetus cannot be regarded as completely innocuous. Even though there are no demonstrated risks from ultrasound imaging, it can produce effects on the body. Laboratory studies have demonstrated that diagnostic levels of ultrasound can produce physical effects in tissue, such as mechanical vibrations, rise in temperature and cavitation. A number of in vitro and in vivo (animal and human) biologic effects have been reported following exposure to diagnostic ultrasound devices and low intensity ultrasound used for therapeutic purposes. Most public health experts, clinicians and industry agree that exposure of the fetus to ultrasound for nonmedical purposes should be avoided. The U.S. Food and Drug Administration (FDA) supports this position.
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Affiliation(s)
- Robert A Phillips
- U.S. Food and Drug Administration, Center for Devices and Radiological Health, Silver Spring, MD 20993-0002, USA
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