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Poormoradi B, Dehghani S, Zare H, Alikhani MY, Haghgoo JM, Farmany A. Enhanced antibacterial activity of cadmium telluride nanocrystals in combination with 940-nm laser diode on anaerobic bacteria P. gingivalis: an in vitro study. Lasers Med Sci 2023; 38:112. [PMID: 37103664 DOI: 10.1007/s10103-023-03773-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 04/10/2023] [Indexed: 04/28/2023]
Abstract
Periodontal disease is one of the most common chronic diseases in the oral cavity that causes tooth loss. Root scaling and leveling cannot eliminate all periodontal pathogens, and the use of antibacterial agents or lasers can increase the efficiency of mechanical methods. The aim of this study was to evaluate and compare the antibacterial activity of cadmium telluride nanocrystals in combination with 940-nm laser diode. Cadmium telluride nanocrystals were prepared by a green route of synthesis in aqueous medium. The results of this study showed that cadmium telluride nanocrystals significantly inhibit the growth of P. gingivalis. The antibacterial property of this nanocrystal increases with increasing its concentration, laser diode 940-nm irradiation and with increasing the time. It was shown that the antibacterial activity of combination of 940-nm laser diode and cadmium telluride nanocrystals is greater than the effect of either alone and can have a similar effect with its long-term presence of microorganisms. This is very important because it is not possible to use these nanocrystals in the mouth and in the periodontal bag for a long time.
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Affiliation(s)
- Banafsheh Poormoradi
- Department of Periodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Safoora Dehghani
- Department of Periodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | | | - Mohammad Yousef Alikhani
- Department of Microbiology, School of Medicine, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Janet Moradi Haghgoo
- Department of Periodontics, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Abbas Farmany
- Dental Research Center, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
- Dental Implant Research Center, School of Dentistry, Hamadan University of Medical Sciences, Hamadan, Iran.
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Suhariningsih S, Astuti SD, Kusumawati HN, Mahmud AF, Septriana M, Rozykulyyeva L, Susilo Y, Syahrom A. Effect of 650 nm laser photobiomodulation therapy on the HT-7 ( shenmen) acupoint in the Mus musculus model of Parkinson's disease. Heliyon 2023; 9:e15295. [PMID: 37123890 PMCID: PMC10130853 DOI: 10.1016/j.heliyon.2023.e15295] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 03/22/2023] [Accepted: 03/31/2023] [Indexed: 05/02/2023] Open
Abstract
Background Parkinson's disease is one of the neurodegenerative conditions that impacts 1-2% of the world's population. The only effective therapy for this condition today is to restore the biochemical function of the diseased dopamine neurons by giving them Levodopa or L-3,4-dihydroxyphenylalanine (l-DOPA). The risk of progenitor stem cells, though, is the growth of teratomas or the uncontrolled growth of cells. As a result, an alternative or additional method is needed, such as photobiomodulation therapy using a laser diode. In this research, male mice (Mus musculus), which were used as models for Parkinson's disease in an in vivo paraquat study, to determine the optimal dose of photobiomodulation therapy and a laser diode was used as a treatment. Methods The three sample groups are Group P-L- (control group, induced by 0.9% NaCl), Group P + L- (only caused by paraquat), and Group P + L+. (Treatment group, treated by paraquat and photobiomodulation therapy with a laser diode). Photobiomodulation treatment doses of 0.14 J, 0.29 J, 0.37 J, 0.76 J, 1.14 J, and 1.52 J were used in the P+L+ subgroups (6 groups). The laser diode generated a continuous wave with a wavelength of 658 nm, a beam spot of 2.10 mm, and an output power of 15.42 mW. After treatment, the histopathology results of each sample were inspected under a microscope. Result In Parkinson's disease-affected mice, paraquat has been shown to reduce the number of neurons. According to the results of the histopathological examination, photobiomodulation therapy using a laser diode (P + L+) on the HT-7 (Shenmen) may raise the quantity of neurons and the proportion of healthy cells in the mouse brain. Conclusion The effective radiated energy of the photobiomodulation therapy using laser diode treatment on the muscle musculus cell model of Parkinson's disease is 0.76 J.
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Affiliation(s)
- Suhariningsih Suhariningsih
- Department of Physics, Faculty of Sciences and Technology, Airlangga University, Surabaya, 60115, Indonesia
- Biophysics and Medical Physics Research Group, Faculty of Sciences and Technology, Airlangga University, Surabaya, 60115, Indonesia
- Traditional Medicine Study Program, Faculty of Vocational Study, Airlangga University, Surabaya, 60286, Indonesia
| | - Suryani Dyah Astuti
- Department of Physics, Faculty of Sciences and Technology, Airlangga University, Surabaya, 60115, Indonesia
- Biophysics and Medical Physics Research Group, Faculty of Sciences and Technology, Airlangga University, Surabaya, 60115, Indonesia
- Biomedical Engineering Post Graduate Program, Faculty of Science and Technology, Airlangga University, Surabaya, 60115, Indonesia
- Corresponding author. Airlangga University Faculty of Science and Technology, Universitas Airlangga Fakultas Sains dan Teknologi, Surabaya, East Java, 60115, Indonesia
| | - Herdiani Nur Kusumawati
- Biomedical Engineering Post Graduate Program, Faculty of Science and Technology, Airlangga University, Surabaya, 60115, Indonesia
| | - Amalia Fitriana Mahmud
- Department of Physics, Faculty of Sciences and Technology, Airlangga University, Surabaya, 60115, Indonesia
| | - Maya Septriana
- Traditional Medicine Study Program, Faculty of Vocational Study, Airlangga University, Surabaya, 60286, Indonesia
| | - Lale Rozykulyyeva
- Biomedical Engineering Post Graduate Program, Faculty of Science and Technology, Airlangga University, Surabaya, 60115, Indonesia
| | - Yunus Susilo
- Faculty of Engineering, Dr Soetomo University, Surabaya, 60118, Indonesia
| | - Ardiansyah Syahrom
- Department of Applied Mechanics and Design, Faculty of Mechanical Engineering, Universiti Teknologi Malaysia, 81310 Johor Bahru, Malaysia
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Lemaitre S, Sarandeses-Diez T, Gonzalez-Candial M. Anatomical and functional outcomes of transcanalicular diode laser assisted dacryocystorhinostomy as a primary procedure. J Fr Ophtalmol 2021; 44:404-408. [PMID: 33494970 DOI: 10.1016/j.jfo.2020.05.028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/16/2020] [Accepted: 05/25/2020] [Indexed: 11/25/2022]
Abstract
INTRODUCTION The goal of this study was to assess the efficacy of transcanalicular diode laser assisted dacryocystorhinostomy (TDL-DCR) for the treatment of primary acquired nasolacrimal duct obstruction. MATERIAL AND METHODS This was a single center retrospective study. We included all patients who underwent TDL-DCR between July 2015 and October 2017 for chronic epiphora or chronic dacryocystitis. All procedures were performed under local anesthesia with sedation. The anatomical and functional success rates were studied as a function of each operative indication. RESULTS Thirty-seven patients were included (18 had chronic epiphora and 19 had chronic dacryocystitis). All but one patient had bicanalicular silicone stent intubation. Irrigation of the lacrimal system demonstrated postoperative patency in 78% of patients operated for chronic epiphora and 76% of those with chronic dacryocystitis. The functional success of the surgery (as defined by the Munk score) was higher if the operative indication was chronic dacryocystitis (62%) (whereas it was only 41% for the indication of chronic epiphora). CONCLUSION TDL-DCR has a lower anatomical and functional success rate than those reported in the literature for external or endonasal dacryocystorhinostomy. However, it retains a place in the treatment of primary acquired nasolacrimal duct obstruction (in particular when it is complicated by chronic dacryocystitis), especially if there is an absolute or relative contraindication to the two other dacryocystorhinostomy techniques.
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Affiliation(s)
- S Lemaitre
- Institut d'Investigació Biomèdica de Girona Dr. Josep Trueta (IDIBGI), Parc Hospitalari Martí i Julià de Salt - Edifici: M2, 17190 Salt, Girona, Spain; Moorfields Eye Hospital NHS Foundation Trust, London, United Kingdom.
| | - T Sarandeses-Diez
- Ophthalmology department, Hospital universitari de Girona Dr. Josep Trueta, Avinguda de França s/n, 17007 Girona, Spain; Hospital Clínico Universitario de Santiago, Rúa Choupana s/n, Santiago de Compostela, 15706, A Coruña, Spain
| | - M Gonzalez-Candial
- Ophthalmology department, Hospital universitari de Girona Dr. Josep Trueta, Avinguda de França s/n, 17007 Girona, Spain; Centro Médico Teknon, Carrer de Vilana, 12, 08022 Barcelona, Spain
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Li X, Tsang VTC, Kang L, Zhang Y, Wong TTW. High-speed high-resolution laser diode-based photoacoustic microscopy for in vivo microvasculature imaging. Vis Comput Ind Biomed Art 2021; 4:1. [PMID: 33426603 PMCID: PMC7797394 DOI: 10.1186/s42492-020-00067-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Accepted: 12/22/2020] [Indexed: 11/10/2022] Open
Abstract
Laser diodes (LDs) have been considered as cost-effective and compact excitation sources to overcome the requirement of costly and bulky pulsed laser sources that are commonly used in photoacoustic microscopy (PAM). However, the spatial resolution and/or imaging speed of previously reported LD-based PAM systems have not been optimized simultaneously. In this paper, we developed a high-speed and high-resolution LD-based PAM system using a continuous wave LD, operating at a pulsed mode, with a repetition rate of 30 kHz, as an excitation source. A hybrid scanning mechanism that synchronizes a one-dimensional galvanometer mirror and a two-dimensional motorized stage is applied to achieve a fast imaging capability without signal averaging due to the high signal-to-noise ratio. By optimizing the optical system, a high lateral resolution of 4.8 μm has been achieved. In vivo microvasculature imaging of a mouse ear has been demonstrated to show the high performance of our LD-based PAM system.
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Affiliation(s)
- Xiufeng Li
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong, China
| | - Victor T C Tsang
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong, China
| | - Lei Kang
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong, China
| | - Yan Zhang
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong, China
| | - Terence T W Wong
- Translational and Advanced Bioimaging Laboratory, Department of Chemical and Biological Engineering, Hong Kong University of Science and Technology, Hong Kong, China.
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Mapley M, Lu Y, Gregory SD, Pauls JP, Tansley G, Busch A. Development and validation of a low-cost polymer selective laser sintering machine. HardwareX 2020; 8:e00119. [PMID: 35498255 PMCID: PMC9041240 DOI: 10.1016/j.ohx.2020.e00119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/22/2020] [Accepted: 06/22/2020] [Indexed: 06/14/2023]
Abstract
Due to manufacturer implemented processing parameter restrictions and the cost prohibitive nature of selective laser sintering (SLS) machines, researchers have limited opportunities to explore the processing of new materials using this additive manufacturing (3D printing) process. Accordingly, this article aimed to overcome these limitations by describing the build and operation of a customizable low-cost polymer SLS machine. The machine boasts a three piston powder bed with the center build piston heated by PID controlled ceramic heaters. Thermal energy for powder consolidation was provided via a 2.44 W solid state diode laser which was mechanically traversed using stepper motor driven belt drives. New layers of powder were deposited by a counter-rotating roller system. The SLS machine was controlled by executing G-code in Mach3 allowing full customization of processing parameters. The machine demonstrated the production of parts from polyamide-12 reaching densities of 918 ± 9 kg/m3 while achieving an elastic modulus of 358.36 ± 3.04 MPa and elongation at break of 11.13 ± 0.02%. With part properties similar to those achievable with a commercial machine, this low-cost SLS machine could be a vital tool in assisting researchers to explore the processing of new materials.
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Affiliation(s)
- Martin Mapley
- School of Engineering and Built Environment, Griffith University, Queensland, Australia
- Innovative Cardiovascular Engineering and Technology Laboratory, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - Yidi Lu
- Innovative Cardiovascular Engineering and Technology Laboratory, The Prince Charles Hospital, Brisbane, Queensland, Australia
- University of Queensland, Brisbane, Queensland, Australia
| | - Shaun D. Gregory
- School of Engineering and Built Environment, Griffith University, Queensland, Australia
- Innovative Cardiovascular Engineering and Technology Laboratory, The Prince Charles Hospital, Brisbane, Queensland, Australia
- Department of Mechanical and Aerospace Engineering, Monash University, Melbourne, Victoria, Australia
| | - Jo P. Pauls
- School of Engineering and Built Environment, Griffith University, Queensland, Australia
- Innovative Cardiovascular Engineering and Technology Laboratory, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - Geoff Tansley
- School of Engineering and Built Environment, Griffith University, Queensland, Australia
- Innovative Cardiovascular Engineering and Technology Laboratory, The Prince Charles Hospital, Brisbane, Queensland, Australia
| | - Andrew Busch
- School of Engineering and Built Environment, Griffith University, Queensland, Australia
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Erfanzadeh M, Zhu Q. Photoacoustic imaging with low-cost sources; A review. Photoacoustics 2019; 14:1-11. [PMID: 30923674 PMCID: PMC6423351 DOI: 10.1016/j.pacs.2019.01.004] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 12/28/2018] [Accepted: 01/24/2019] [Indexed: 05/04/2023]
Abstract
Benefitting from advantages of optical and ultrasound imaging, photoacoustic imaging (PAI) has demonstrated potentials in a wide range of medical applications. In order to facilitate clinical applications of PAI and encourage its application in low-resource settings, research on low-cost photoacoustic imaging with inexpensive optical sources has gained attention. Here, we review the advances made in photoacoustic imaging with low-cost sources.
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Affiliation(s)
- Mohsen Erfanzadeh
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT 06269, USA
| | - Quing Zhu
- Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA
- Department of Radiology, Washington University School of Medicine, St. Louis, MO 63110, USA
- Corresponding author at: Department of Biomedical Engineering, Washington University in St. Louis, St. Louis, MO 63130, USA.
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Wang MH, Gu XW, Ji BW, Wang LC, Guo ZJ, Yang B, Wang XL, Li CY, Liu JQ. Three-dimensional drivable optrode array for high-resolution neural stimulations and recordings in multiple brain regions. Biosens Bioelectron 2019; 131:9-16. [PMID: 30797109 DOI: 10.1016/j.bios.2019.01.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/28/2018] [Accepted: 01/14/2019] [Indexed: 11/18/2022]
Abstract
The brain-computer interface (BCI) devices are of prime important for study of nervous system as well as diagnosis and treatment of neurological disorders. To meet the needs of the BCI devices in high-density integration and multi-functionalization, 3-dimensional (3D) drivable optrode array with laser diodes (LDs) coupled waveguides was developed. The unique device realizes the 3D integration of the optrodes and avoids fiber tangle and tissue heating by adopting LD coupled waveguide structure. Besides, the postoperative position adjustment of the optrode array was achieved by integrating with a 3D printed micro-drive. Most importantly, high-resolution neural stimulations and recordings were achieved for study of working memory related neural circuits in four brain regions of mice including prelimbic cortex (PrL), mediodorsal thalamic nucleus (MD), dorsal medial caudate nucleus (dmCP) and posterior motor cortex 2 (pM2). The results indicate that this novel device is promising for the research of complex neural networks.
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Affiliation(s)
- Ming-Hao Wang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Collaborative Innovation Center of IFSA, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xiao-Wei Gu
- Institute of Neuroscience and Key Laboratory of Primate Neurobiology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, PR China; University of Chinese Academy of Sciences, Peking, PR China
| | - Bo-Wen Ji
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Collaborative Innovation Center of IFSA, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Long-Chun Wang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Collaborative Innovation Center of IFSA, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Zhe-Jun Guo
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Collaborative Innovation Center of IFSA, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Bin Yang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Collaborative Innovation Center of IFSA, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Xiao-Lin Wang
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Collaborative Innovation Center of IFSA, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Cheng-Yu Li
- Institute of Neuroscience and Key Laboratory of Primate Neurobiology, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, Shanghai 200031, PR China; University of Chinese Academy of Sciences, Peking, PR China
| | - Jing-Quan Liu
- National Key Laboratory of Science and Technology on Micro/Nano Fabrication Laboratory, Key Laboratory for Thin Film and Microfabrication of the Ministry of Education, Collaborative Innovation Center of IFSA, Department of Micro/Nano-electronics, Shanghai Jiao Tong University, Shanghai 200240, PR China.
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De Santis R, Russo T, Gloria A. An analysis on the potential of diode-pumped solid-state lasers for dental materials. Mater Sci Eng C Mater Biol Appl 2018; 92:862-867. [PMID: 30184815 DOI: 10.1016/j.msec.2018.07.051] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 07/09/2018] [Accepted: 07/20/2018] [Indexed: 11/30/2022]
Abstract
Material structure-property relationship is strongly related to the employed process technology. Over the past years, laser processing of engineering materials has been proposed in many fields and different uses for diode lasers have been found in dentistry. In this contest, the potential of GaN- and InGaN-based laser diodes to cure dental materials was analysed. Two wavelengths of 405 nm and 445 nm were used as heat or light sources for warm condensation of gutta-percha, light transmission in dental posts and brackets or light curing of dental composites. Additive manufacturing approach was considered to fabricate 3D root analogues, suitable supports, positioning systems and moulds for optical measurements. A three-axis CAD/CAM system was implemented for positioning and aligning the laser beam. The ability of diode-pumped solid-state lasers to cure dental materials or to transmit light was compared to that of a traditional instrument. Temperature profile at the apex of an additive manufactured root canal sealed with gutta-percha, light transmission through translucent quartz fiber post or through aesthetic ceramic bracket, bending properties and morphological features of light cured dental composites (Gradia Direct - GC Corporation and Venus Diamond - Heraeus Kulzer) were measured. Results showed a very high potential of diode-pumped solid-state lasers to be used in endodontics, orthodontics and restorative dentistry.
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Affiliation(s)
- Roberto De Santis
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, V.le J.F. Kennedy 54 - Pad. 20 Mostra d'Oltremare, 80125 Naples, Italy
| | - Teresa Russo
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, V.le J.F. Kennedy 54 - Pad. 20 Mostra d'Oltremare, 80125 Naples, Italy
| | - Antonio Gloria
- Institute of Polymers, Composites and Biomaterials, National Research Council of Italy, V.le J.F. Kennedy 54 - Pad. 20 Mostra d'Oltremare, 80125 Naples, Italy.
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Behnam MA, Emami F, Sobhani Z, Dehghanian AR. The application of titanium dioxide (TiO 2) nanoparticles in the photo-thermal therapy of melanoma cancer model. Iran J Basic Med Sci 2018; 21:1133-1139. [PMID: 30483386 PMCID: PMC6251399 DOI: 10.22038/ijbms.2018.30284.7304] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Accepted: 07/16/2018] [Indexed: 12/23/2022]
Abstract
OBJECTIVES Photo-thermal therapy (PTT) is a therapeutic method in which photon energy is converted into heat to induce hyperthermia in malignant tumor cells. In this method, energy conversion is performed by nanoparticles (NPs) to enhance induced heat efficacy. The low-cytotoxicity and high optical absorbance of NPs used in this technique are very important. In the present study, titanium dioxide (TiO2) NPs were used as agents for PTT. For increasing water dispersibility and biocompatibility, polyethylene glycol (PEG)-TiO2 NPs (PEGylated TiO2 NPs) were synthesized and the effect of these NPs on reducing melanoma tumor size after PTT was experimentally assessed. MATERIALS AND METHODS To improve the dispersibility of TiO2 NPs in water, PEG was used for wrapping the surface of TiO2 NPs. The formation of a thin layer of PEG around the TiO2 NPs was confirmed through thermo-gravimetric analysis and transmission electron microscopy techniques. Forty female cancerous mice were divided into four equal groups and received treatment with NPs and a laser diode (λ = 808 nm, P = 2 W & I = 2 W/cm2) for seven min once in the period of the treatment. RESULTS Compared to the mice receiving only the laser therapy, the average tumor size in the mice receiving TiO2-PEG NPs with laser excitation treatment sharply decreased. CONCLUSION The results of animal studies showed that PEGylated TiO2 NPs were exceptionally potent in destroying solid tumors in the PTT technique.
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Affiliation(s)
- Mohammad Ali Behnam
- Nano Opto-Electronic Research Center, Electrical and Electronics Engineering Department, Shiraz University of Technology, Shiraz, Iran
| | - Farzin Emami
- Nano Opto-Electronic Research Center, Electrical and Electronics Engineering Department, Shiraz University of Technology, Shiraz, Iran
| | - Zahra Sobhani
- Quality Control Department, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
- Pharmaceutical Sciences Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
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Vaneckova T, Smerkova K, Zitka J, Hynek D, Zitka O, Hlavacek A, Foret F, Adam V, Vaculovicova M. Upconversion nanoparticle bioconjugates characterized by capillary electrophoresis. Electrophoresis 2018; 39:2246-2252. [PMID: 29882600 DOI: 10.1002/elps.201700483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2017] [Revised: 05/29/2018] [Accepted: 05/29/2018] [Indexed: 11/06/2022]
Abstract
Upconversion nanoparticles (UCNPs) are an emerging class of optical materials with high potential in bioimaging due to practically no background signal and high penetration depth. Their excellent optical properties and easy surface functionalization make them perfect for conjugation with targeting ligands. In this work, capillary electrophoretic (CE) method with laser-induced fluorescence detection was used to investigate the behavior of carboxyl-silica-coated UCNPs. Folic acid, targeting folate receptor overexpressed by wide variety of cancer cells, was used for illustrative purposes and assessed by CE under optimized conditions. Peptide-mediated bioconjugation of antibodies to UCNPs was also investigated. Despite the numerous advantages of CE, this is the first time that CE was employed for characterization of UCNPs and their bioconjugates. The separation conditions were optimized including the background electrolyte concentration and pH. The optimized electrolyte was 20 mM borate buffer with pH 8.
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Affiliation(s)
- Tereza Vaneckova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic
| | - Kristyna Smerkova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Jan Zitka
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - David Hynek
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Ondrej Zitka
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Antonin Hlavacek
- Czech Academy of Sciences, Institute of Analytical Chemistry, Brno, Czech Republic
| | - Frantisek Foret
- Czech Academy of Sciences, Institute of Analytical Chemistry, Brno, Czech Republic
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
| | - Marketa Vaculovicova
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic.,Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic
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Behnam MA, Emami F, Sobhani Z, Koohi-Hosseinabadi O, Dehghanian AR, Zebarjad SM, Moghim MH, Oryan A. Novel Combination of Silver Nanoparticles and Carbon Nanotubes for Plasmonic Photo Thermal Therapy in Melanoma Cancer Model. Adv Pharm Bull 2018; 8:49-55. [PMID: 29670838 PMCID: PMC5896395 DOI: 10.15171/apb.2018.006] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Revised: 02/27/2018] [Accepted: 02/28/2018] [Indexed: 12/19/2022] Open
Abstract
Purpose: Plasmonic photo thermal therapy (PPTT) is a therapeutic method in which the photon energy is rapidly transformed into heat via a series of radiative and non-radiative phenomena to ablate cancer. Plasmonic NPs, such as silver NPs (Ag NPs), have considerable properties in optical absorbance. Furthermore, good thermal conductivity and cell penetration ability of carbon nanotubes (CNTs) could improve the efficacy of Ag NPs for PPTT. Decoration of the multi-walled carbon nanotubes (MWCNTs) with silver has been developed to enhance thermal conductivity of the MWCNT particles. Methods: The Ag NPs were decorated on the CNTs and the ability of these particles (CNT/Ag NPs) in reduction of melanoma tumor size after PTT was evaluated experimentally. For comparison, the PTT of silver nanorods (Ag NRs) and CNTs were investigated. The melanoma tumor was induced by injection of B16/F10 cell line to the inbred mice. Different NPs were injected into the tumors and then irradiated via laser diode (λ=670 nm, P=500 mW, and I= 3.5 W/cm2) at scheduled time. Results: Monitoring of tumor sizes showed that integration of CNTs with silver could enhance the optical absorption of CNTs and improve tumor destruction in PPTT technique. Conclusion: The CNT/Ag NPs could act as a potent agent in PPTT method in curing solid tumors.
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Affiliation(s)
- Mohammad Ali Behnam
- Nano Opto-Electronic Research Center, Electrical and Electronics Engineering Department, Shiraz University of Technology, Shiraz, Iran
| | - Farzin Emami
- Nano Opto-Electronic Research Center, Electrical and Electronics Engineering Department, Shiraz University of Technology, Shiraz, Iran
| | - Zahra Sobhani
- Quality Control Department, Faculty of Pharmacy, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Omid Koohi-Hosseinabadi
- Center of Experimental and Comparative Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Seyed Mojtaba Zebarjad
- Materials Science and Engineering Department, Engineering School, Shiraz University, Shiraz, Iran
| | - Mohammad Hadi Moghim
- Materials Science and Engineering Department, Engineering School, Shiraz University, Shiraz, Iran
| | - Ahmad Oryan
- Pathology Department, School of Veterinary Medicine, Shiraz University, Shiraz, Iran
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12
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Ryu HY. Investigation into the Anomalous Temperature Characteristics of InGaN Double Quantum Well Blue Laser Diodes Using Numerical Simulation. Nanoscale Res Lett 2017; 12:366. [PMID: 28532131 PMCID: PMC5438324 DOI: 10.1186/s11671-017-2141-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Accepted: 05/12/2017] [Indexed: 05/27/2023]
Abstract
GaN-based blue laser diodes (LDs) may exhibit anomalous temperature characteristics such as a very high characteristic temperature (T 0) or even negative T 0. In this work, temperature-dependent characteristics of GaN-based blue LDs with InGaN double quantum well (QW) structures were investigated using numerical simulations. The temperature-dependent threshold current is found to become increasingly anomalous as the thickness or doping concentration of the barrier layer between QWs increases. For a properly chosen barrier thickness and doping concentration, very high T 0 of >10,000 K can be obtained. The anomalous temperature characteristics of these InGaN blue LDs are attributed to the increase of gain at the n-side QW with increasing temperature because of the thermally enhanced hole transport from the p-side to the n-side QW.
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Affiliation(s)
- Han-Youl Ryu
- Department of Physics, Inha University, Incheon, 402-751, South Korea.
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13
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Doustvandi MA, Mohammadnejad F, Mansoori B, Mohammadi A, Navaeipour F, Baradaran B, Tajalli H. The interaction between the light source dose and caspase-dependent and -independent apoptosis in human SK-MEL-3 skin cancer cells following photodynamic therapy with zinc phthalocyanine: A comparative study. J Photochem Photobiol B 2017; 176:62-68. [PMID: 28964887 DOI: 10.1016/j.jphotobiol.2017.09.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 09/03/2017] [Accepted: 09/21/2017] [Indexed: 12/12/2022]
Abstract
The aim of this study is to determine the behavior of relative expression of Bcl-2, caspase-8, caspase-9, and caspase-3 genes of/in SK-MEL-3 cancer cells and explore molecular mechanisms responsible for the apoptosis response during an in vitro photodynamic therapy (PDT) with Zinc Phthalocyanine (ZnPc) using different doses of the light source. In this study, firstly the cytotoxic effects of ZnPc-PDT on SK-MEL-3 cells were evaluated. By irradiating the laser, ZnPc induced a significant amount of apoptosis on SK-MEL-3 cells in three IC50s including 0.064±0.01, 0.043±0.01, and 0.036±0.01μg/mL at the doses of 8, 16, and 24J/cm2, respectively. Moreover, flow cytometry and QRT-PCR experiments were done. The high percentage of apoptotic cells was seen in the early apoptosis stage. The expression of Bcl-2 and caspase-8 genes at all doses of laser experienced an obvious reduction in comparison to the control group. On the other hand, although the expression of caspase-9 and caspase-3 genes remains almost constant at 8J/cm2, but they faced an increment at 16 and 24J/cm2 doses. These data reveal caspase-dependent apoptosis in high and caspase-independent apoptosis in low doses of laser. Based on the results of present work, it can be suggested that the dose of the light source is a key factor in induction of caspase-dependent and caspase-independent apoptosis pathways following PDT.
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Affiliation(s)
| | | | - Behzad Mansoori
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Student Research Committee, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ali Mohammadi
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Behzad Baradaran
- Immunology Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Habib Tajalli
- Research Institute for Applied Physics and Astronomy, University of Tabriz, Tabriz, Iran.
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