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Huang H, Wu RS, Lin M, Xu S. Emerging Wearable Ultrasound Technology. IEEE TRANSACTIONS ON ULTRASONICS, FERROELECTRICS, AND FREQUENCY CONTROL 2024; 71:713-729. [PMID: 37878424 PMCID: PMC11263711 DOI: 10.1109/tuffc.2023.3327143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2023]
Abstract
This perspective article provides a brief overview on materials, fabrications, beamforming, and applications for wearable ultrasound devices, a rapidly growing field with versatile implications. Recent developments in miniaturization and soft electronics have significantly advanced wearable ultrasound devices. Such devices offer distinctive advantages over traditional ultrasound probes, including prolonged usability and operator independence, and have demonstrated their effectiveness in continuous monitoring, noninvasive therapies, and advanced human-machine interfaces. Wearable ultrasound devices can be classified into three main categories: rigid, flexible, and stretchable, each having distinctive properties and fabrication strategies. Key unique strategies in device design, packaging, and beamforming for each type of wearable ultrasound devices are reviewed. Furthermore, we highlight the latest applications enabled by wearable ultrasound technology in various areas. This article concludes by discussing the outstanding challenges within the field and outlines potential pathways for future advancements.
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Zhao J, Liu X, Pu X, Shen Z, Xu W, Yang J. Preparation Method and Application of Porous Poly(lactic acid) Membranes: A Review. Polymers (Basel) 2024; 16:1846. [PMID: 39000701 PMCID: PMC11244136 DOI: 10.3390/polym16131846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 05/09/2024] [Accepted: 06/12/2024] [Indexed: 07/17/2024] Open
Abstract
Porous membrane technology has garnered significant attention in the fields of separation and biology due to its remarkable contributions to green chemistry and sustainable development. The porous membranes fabricated from polylactic acid (PLA) possess numerous advantages, including a low relative density, a high specific surface area, biodegradability, and excellent biocompatibility. As a result, they exhibit promising prospects for various applications, such as oil-water separation, tissue engineering, and drug release. This paper provides an overview of recent research advancements in the fabrication of PLA membranes using electrospinning, the breath-figure method, and the phase separation method. Firstly, the principles of each method are elucidated from the perspective of pore formation. The correlation between the relevant parameters and pore structure is discussed and summarized, subsequently followed by a comparative analysis of the advantages and limitations of each method. Subsequently, this article presents the diverse applications of porous PLA membranes in tissue engineering, oil-water separation, and other fields. The current challenges faced by these membranes, however, encompass inadequate mechanical strength, limited production efficiency, and the complexity of pore structure control. Suggestions for enhancement, as well as future prospects, are provided accordingly.
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Affiliation(s)
- Jinxing Zhao
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Xianggui Liu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
| | - Xuelian Pu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Zetong Shen
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Wenqiang Xu
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
| | - Jian Yang
- Key Laboratory of Advanced Packaging Materials and Technology of Hunan Province, Hunan University of Technology, Zhuzhou 412007, China
- National & Local Joint Engineering Research Center for Advanced Packaging Material and Technology, Hunan University of Technology, Zhuzhou 412007, China
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Ali M, Bathaei MJ, Istif E, Karimi SNH, Beker L. Biodegradable Piezoelectric Polymers: Recent Advancements in Materials and Applications. Adv Healthc Mater 2023; 12:e2300318. [PMID: 37235849 DOI: 10.1002/adhm.202300318] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 05/21/2023] [Indexed: 05/28/2023]
Abstract
Recent materials, microfabrication, and biotechnology improvements have introduced numerous exciting bioelectronic devices based on piezoelectric materials. There is an intriguing evolution from conventional unrecyclable materials to biodegradable, green, and biocompatible functional materials. As a fundamental electromechanical coupling material in numerous applications, novel piezoelectric materials with a feature of degradability and desired electrical and mechanical properties are being developed for future wearable and implantable bioelectronics. These bioelectronics can be easily integrated with biological systems for applications, including sensing physiological signals, diagnosing medical problems, opening the blood-brain barrier, and stimulating healing or tissue growth. Therefore, the generation of piezoelectricity from natural and synthetic bioresorbable polymers has drawn great attention in the research field. Herein, the significant and recent advancements in biodegradable piezoelectric materials, including natural and synthetic polymers, their principles, advanced applications, and challenges for medical uses, are reviewed thoroughly. The degradation methods of these piezoelectric materials through in vitro and in vivo studies are also investigated. These improvements in biodegradable piezoelectric materials and microsystems could enable new applications in the biomedical field. In the end, potential research opportunities regarding the practical applications are pointed out that might be significant for new materials research.
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Affiliation(s)
- Mohsin Ali
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Mohammad Javad Bathaei
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Emin Istif
- Department of Mechanical Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
- Faculty of Engineering and Natural Sciences, Kadir Has University, Cibali, Istanbul, 34083, Turkey
| | - Seyed Nasir Hosseini Karimi
- Koç University Research Center for Translational Research (KUTTAM), Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
| | - Levent Beker
- Department of Biomedical Sciences and Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
- Department of Mechanical Engineering, Koç University, Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
- Koç University Research Center for Translational Research (KUTTAM), Rumelifeneri Yolu, Sarıyer, Istanbul, 34450, Turkey
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Salaris V, San Félix García-Obregón I, López D, Peponi L. Fabrication of PLA-Based Electrospun Nanofibers Reinforced with ZnO Nanoparticles and In Vitro Degradation Study. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2236. [PMID: 37570553 PMCID: PMC10420940 DOI: 10.3390/nano13152236] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Revised: 07/28/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023]
Abstract
In this work, electrospun nanofibers based on polylactic acid, PLA, reinforced with ZnO nanoparticles have been studied, considering the growing importance of electrospun mats based on biopolymers for their applications in different fields. Specifically, electrospun nanofibers based on PLA have been prepared by adding ZnO nanoparticles at different concentrations, such as 0.5, 1, 3, 5, 10 and 20 wt%, with respect to the polymer matrix. The materials have been characterized in terms of their morphological, mechanical, and thermal properties, finding 3 wt% as the best concentration to produce PLA nanofibers reinforced with ZnO nanoparticles. In addition, hydrolytic degradation in phosphate buffer solution (PBS) was carried out to study the effect of ZnO nanoparticles on the degradation behavior of PLA-based electrospun nanofiber mats, obtaining an acceleration in the degradation of the PLA electrospun mat.
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Affiliation(s)
| | | | - Daniel López
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain; (V.S.); (I.S.F.G.-O.)
| | - Laura Peponi
- Instituto de Ciencia y Tecnología de Polímeros (ICTP-CSIC), C/Juan de la Cierva 3, 28006 Madrid, Spain; (V.S.); (I.S.F.G.-O.)
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Arash S, Akbari B, Ghaleb S, Kaffashi B, Marouf BT. Preparation of PLA-TPU-Nanoclay composites and characterization of their morphological, mechanical, and shape memory properties. J Mech Behav Biomed Mater 2023; 139:105642. [PMID: 36706650 DOI: 10.1016/j.jmbbm.2022.105642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 12/17/2022] [Accepted: 12/20/2022] [Indexed: 01/06/2023]
Abstract
In this study, a combination of polylactic acid polymer and thermoplastic polyurethane with the addition of nano-clay particles was used. The reason for using clay nanoparticles and their strength is the low price and availability of this material. Adding nano-clay particles to the polymer composition improves the mechanical properties of the composite as they will interact with functional groups of the polymer. The results of the FTIR spectroscopy confirmed the presence of three components in the compound indicating that no chemical reactions occurred among the three components during the compounding process. The FE-SEM images taken from the compounds showed that TPU and nano-clay particles were evenly distributed in the PLA matrix. The DMTA results were utilized to determine the transfer temperature of the compounds as well as the storage and loss modulus and the shape memory properties. The XRD spectroscopy was used to determine the crystallinity and exfoliation of the nanoparticles. The mechanical properties of the fabricated polymer compounds were determined. It was found that the sample with 3% by weight of clay nanoparticles had the highest strength, and the sample with 5 wt% of clay nanoparticles had the highest toughness among nanocomposites. According to the hardness measurement, the sample with 5% by weight of clay nanoparticles has the highest hardness amongst all prepared composites. The memory properties of the prepared nanocomposites showed a significant improvement with increasing the amount of nanoparticles. This study showed the suitability and efficiency of PLA, TPU, and clay nanoparticle melt mixing methods in achieving a relatively tough shape memory composite. At the same time, this method is also inexpensive and scalable.
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Affiliation(s)
- S Arash
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - B Akbari
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran.
| | - S Ghaleb
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, Iran
| | - B Kaffashi
- School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
| | - B T Marouf
- Department of Materials Science and Engineering, Faculty of Engineering, Urmia University, Urmai, Iran
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Ben Achour MA, Samuel C, Rguiti M, Barrau S, Courtois C, Lacrampe M. Evaluation of shear piezoelectric coefficients by a bimorph cantilever technique for extruded and oriented poly(
l
‐lactide) films. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5942] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mohamed Aymen Ben Achour
- INSA Hauts‐de‐France, CERAMATHS – Laboratoire de Matériaux Céramiques et de Mathématiques, Université Polytechnique Hauts‐de‐France Valenciennes France
| | - Cédric Samuel
- IMT Nord Europe, Institut Mines‐Télécom, Université de Lille, Centre for Materials and Processes Lille France
| | - Mohamed Rguiti
- INSA Hauts‐de‐France, CERAMATHS – Laboratoire de Matériaux Céramiques et de Mathématiques, Université Polytechnique Hauts‐de‐France Valenciennes France
| | - Sophie Barrau
- CNRS, INRAE, Centrale Lille, UMR 8207 ‐ UMET ‐ Unité Matériaux et Transformations, Université de Lille Lille France
| | - Christian Courtois
- INSA Hauts‐de‐France, CERAMATHS – Laboratoire de Matériaux Céramiques et de Mathématiques, Université Polytechnique Hauts‐de‐France Valenciennes France
| | - Marie‐France Lacrampe
- IMT Nord Europe, Institut Mines‐Télécom, Université de Lille, Centre for Materials and Processes Lille France
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Chen P, Xu C, Wu P, Liu K, Chen F, Chen Y, Dai H, Luo Z. Wirelessly Powered Electrical-Stimulation Based on Biodegradable 3D Piezoelectric Scaffolds Promotes the Spinal Cord Injury Repair. ACS NANO 2022; 16:16513-16528. [PMID: 36174221 DOI: 10.1021/acsnano.2c05818] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
An electroactive scaffold integrated with noninvasive in vivo electrical-stimulation (ES) capability shows great promise in the repair and regeneration of damaged tissues. Developing high-performance piezoelectric biomaterials which can simultaneously serve as both a biodegradable tissue scaffold and controllable electrical stimulator remains a great challenge. Herein, we constructed a biodegradable high-performance 3D piezoelectric scaffold with ultrasound (US)-driven wireless ES capability, and demonstrated its successful application for the repair of spinal cord injuries in a rat model. The 3D multichannel piezoelectric scaffold was prepared by electrospinning of poly(lactic acid) (PLA) nanofibers incorporated with biodegradable high-performance piezoelectric potassium sodium niobate (K0.5Na0.5NbO3, KNN) nanowires. With programmed US irradiation as a remote mechanical stimulus, the on-demand in vivo ES with an adjustable timeline, duration, and strength can be delivered by the 3D piezoelectric scaffold. Under proper US excitation, the 3D tissue scaffolds made of the piezoelectric composite nanofibers can accelerate the recovery of motor functions and enhance the repair of spinal cord injury. The immunohistofluorescence investigation indicated that the 3D piezoelectric scaffolds combined with the US-driven in vivo ES promoted neural stem cell differentiation and endogenous angiogenesis in the lesion. This work highlights the potential application of a biodegradable high-performance piezoelectric scaffold providing US-driven on-demand electrical cues for regenerative medicine.
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Affiliation(s)
- Ping Chen
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan430074, China
| | - Chao Xu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan430074, China
| | - Ping Wu
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan430074, China
| | - Kun Liu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan430070, China
| | - Feixiang Chen
- Department of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan430071, China
| | - Yun Chen
- Department of Biomedical Engineering, School of Basic Medical Sciences, Wuhan University, Wuhan430071, China
| | - Honglian Dai
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan430070, China
| | - Zhiqiang Luo
- National Engineering Research Center for Nanomedicine, College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan430074, China
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Si J, Duan R, Zhang M, Liu X. Recent Progress Regarding Materials and Structures of Triboelectric Nanogenerators for AR and VR. NANOMATERIALS 2022; 12:nano12081385. [PMID: 35458093 PMCID: PMC9031899 DOI: 10.3390/nano12081385] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 03/21/2022] [Accepted: 04/15/2022] [Indexed: 01/15/2023]
Abstract
With the continuous advancement in technology, electronic products used in augmented reality (AR) and virtual reality (VR) have gradually entered the public eye. As a result, the power supplies of these electronic devices have attracted more attention from scientists. Compared to traditional power sources, triboelectric nanogenerators (TENGs) are gradually being used for energy harvesting in self-powered sensing technology such as wearable flexible electronics, including AR and VR devices due to their small size, high conversion efficiency, and low energy consumption. As a result, TENGs are the most popular power supplies for AR and VR products. This article first summarizes the working mode and basic theory of TENGs, then reviews the TENG modules used in AR and VR devices, and finally summarizes the material selection and design methods used for TENG preparation. The friction layer of the TENG can be made of a variety of materials such as polymers, metals, and inorganic materials, and among these, polytetrafluoroethylene (PTFE) and polydimethylsiloxane (PDMS) are the most popular materials. To improve TENG performance, the friction layer material must be suitable. Therefore, for different application scenarios, the design methods of the TENG play an important role in its performance, and a reasonable selection of preparation materials and design methods can greatly improve the work efficiency of the TENG. Lastly, we summarize the current research status of nanogenerators, analyze and suggest future application fields, and summarize the main points of material selection.
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Calzoni E, Cesaretti A, Montegiove N, Di Michele A, Pellegrino RM, Emiliani C. HexA-Enzyme Coated Polymer Nanoparticles for the Development of a Drug-Delivery System in the Treatment of Sandhoff Lysosomal Storage Disease. J Funct Biomater 2022; 13:jfb13020037. [PMID: 35466219 PMCID: PMC9036261 DOI: 10.3390/jfb13020037] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2022] [Revised: 03/28/2022] [Accepted: 03/30/2022] [Indexed: 01/20/2023] Open
Abstract
Lysosomal storage disorders (LSDs) are a set of metabolic diseases caused by mutations in genes that are in charge of the production of lysosomal enzymes, resulting in the buildup of non-degraded substrates and the consequent systemic damage that mainly involves the Central Nervous System (CNS). One of the most widely used and studied treatments is Enzyme Replacement Therapy, which is based on the administration of the recombinant deficient enzyme. This strategy has often proved fallacious due to the enzyme instability in body fluids and its inability to reach adequate levels in the CNS. In this work, we developed a system based on nanotechnology that allows a stable enzyme to be obtained by its covalent immobilization on nanoparticles (NPs) of polylactic acid, subsequently administered to a cellular model of LSDs, i.e., Sandhoff disease, caused by the absence or deficiency of the β-d-N-acetyl-hexosaminidase A (HexA) enzyme. The HexA enzymes, loaded onto the polymeric NPs through an immobilization procedure that has already been investigated and validated, were found to be stable over time, maintain optimal kinetic parameters, be able to permeate the plasma membrane, hydrolyze HexA’s natural substrate, and restore enzyme activity close to the levels of healthy cells. These results thus lay the foundation for testing the HexA-NPs in animal models of the disease and thus obtaining an efficient drug-delivery system.
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Affiliation(s)
- Eleonora Calzoni
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy; (E.C.); (N.M.); (R.M.P.); (C.E.)
| | - Alessio Cesaretti
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy; (E.C.); (N.M.); (R.M.P.); (C.E.)
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
- Correspondence: ; Tel.: +39-075-585-7436
| | - Nicolò Montegiove
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy; (E.C.); (N.M.); (R.M.P.); (C.E.)
| | - Alessandro Di Michele
- Department of Physics and Geology, University of Perugia, Via Pascoli, 06123 Perugia, Italy;
| | - Roberto Maria Pellegrino
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy; (E.C.); (N.M.); (R.M.P.); (C.E.)
| | - Carla Emiliani
- Department of Chemistry, Biology and Biotechnology, University of Perugia, Via del Giochetto, 06123 Perugia, Italy; (E.C.); (N.M.); (R.M.P.); (C.E.)
- Centro di Eccellenza sui Materiali Innovativi Nanostrutturati (CEMIN), University of Perugia, Via Elce di Sotto 8, 06123 Perugia, Italy
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Saghebasl S, Akbarzadeh A, Gorabi AM, Nikzamir N, SeyedSadjadi M, Mostafavi E. Biodegradable functional macromolecules as promising scaffolds for cardiac tissue engineering. POLYM ADVAN TECHNOL 2022. [DOI: 10.1002/pat.5669] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Solmaz Saghebasl
- Department of Medical Nanotechnology, Faculty of Advanced Medical Sciences Tabriz University of Medical Sciences Tabriz Iran
| | - Abolfazl Akbarzadeh
- Stem Cell Research Center Tabriz University of Medical Sciences Tabriz Iran
- Universal Scientific Education and Research Network (USERN) Tabriz Iran
| | - Armita Mahdavi Gorabi
- Chronic Diseases Research Center, Endocrinology and Metabolism Population Sciences Institute Tehran University of Medical Sciences Tehran Iran
| | - Nasrin Nikzamir
- Department of Chemistry, Science and Research Branch Islamic Azad University Tehran Iran
| | | | - Ebrahim Mostafavi
- Stanford Cardiovascular Institute Stanford University School of Medicine Stanford California USA
- Department of Medicine Stanford University School of Medicine Stanford California USA
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