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Kolitsi LI, Yiantsios SG. Transport of nanoparticles in magnetic targeting: Comparison of magnetic, diffusive and convective forces and fluxes in the microvasculature, through vascular pores and across the interstitium. Microvasc Res 2020; 130:104007. [PMID: 32305349 DOI: 10.1016/j.mvr.2020.104007] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 03/13/2020] [Accepted: 04/13/2020] [Indexed: 02/06/2023]
Abstract
Magnetic nanoparticle targeting in tumor areas is examined by an integrated consideration of the transport steps from the microcirculation to the vascular walls, through their pores and into the interstitium. Brownian, flow- and magnetically induced forces and fluxes are compared on the basis of order-of-magnitude estimates and numerical simulations. The main resistance to nanoparticle transport is found to be within the interstitium, since fluxes there are much smaller than the extravasation fluxes, and the latter are much smaller than the convective-diffusive ones within the microvasculature. For typical nanoparticle sizes, magnetic properties and strengths of magnetic fields as in MRI equipment, magnetic targeting is rather unlikely to play a significant role in directing nanoparticles towards vascular walls or through vascular pores. However, magnetic drift can have an effect within the interstitium and a tangible overall outcome, despite the fact that typical magnetic forces are smaller than Brownian ones or interstitial flow convective forces. The reason behind such an effect has to do with the much larger length scales involved in interstitial transport. Magnetic drift creates a front of large nanoparticle concentrations, flooding the inadequately perfused and poorly accessible tumor area. On the basis of time-scale estimates, it is suggested that sequential cycles of magnetic nanoparticle dosage may help in more efficient access of cell layers ever closer to the tumor center. The present results may assist in the quest for optimal parameters and conditions, given the conflicting requirements for particles small enough to evade hydrodynamic and steric hindrances in vascular pores and the interstitium, yet large enough to bear a substantial magnetic load.
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Affiliation(s)
- Lydia I Kolitsi
- Department of Chemical Engineering, Aristotle University of Thessaloniki, Univ. Box 453, GR 541 24, Thessaloniki, Greece
| | - Stergios G Yiantsios
- Department of Chemical Engineering, Aristotle University of Thessaloniki, Univ. Box 453, GR 541 24, Thessaloniki, Greece.
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Funnell JL, Balouch B, Gilbert RJ. Magnetic Composite Biomaterials for Neural Regeneration. Front Bioeng Biotechnol 2019; 7:179. [PMID: 31404143 PMCID: PMC6669379 DOI: 10.3389/fbioe.2019.00179] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2019] [Accepted: 07/10/2019] [Indexed: 12/11/2022] Open
Abstract
Nervous system damage caused by physical trauma or degenerative diseases can result in loss of sensory and motor function for patients. Biomaterial interventions have shown promise in animal studies, providing contact guidance for extending neurites or sustained release of various drugs and growth factors; however, these approaches often target only one aspect of the regeneration process. More recent studies investigate hybrid approaches, creating complex materials that can reduce inflammation or provide neuroprotection in addition to stimulating growth and regeneration. Magnetic materials have shown promise in this field, as they can be manipulated non-invasively, are easily functionalized, and can be used to mechanically stimulate cells. By combining different types of biomaterials (hydrogels, nanoparticles, electrospun fibers) and incorporating magnetic elements, magnetic materials can provide multiple physical and chemical cues to promote regeneration. This review, for the first time, will provide an overview of design strategies for promoting regeneration after neural injury with magnetic biomaterials.
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Affiliation(s)
| | | | - Ryan J. Gilbert
- Department of Biomedical Engineering, Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, NY, United States
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Erokhin S, Berkov D. Magnetic Targeted Drug Delivery to the Human Eye Retina: An Optimization Methodology. ACTA ACUST UNITED AC 2019. [DOI: 10.1109/jerm.2018.2873943] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Shamsi M, Sedaghatkish A, Dejam M, Saghafian M, Mohammadi M, Sanati-Nezhad A. Magnetically assisted intraperitoneal drug delivery for cancer chemotherapy. Drug Deliv 2018; 25:846-861. [PMID: 29589479 PMCID: PMC7011950 DOI: 10.1080/10717544.2018.1455764] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Intraperitoneal (IP) chemotherapy has revived hopes during the past few years for the management of peritoneal disseminations of digestive and gynecological cancers. Nevertheless, a poor drug penetration is one key drawback of IP chemotherapy since peritoneal neoplasms are notoriously resistant to drug penetration. Recent preclinical studies have focused on targeting the aberrant tumor microenvironment to improve intratumoral drug transport. However, tumor stroma targeting therapies have limited therapeutic windows and show variable outcomes across different cohort of patients. Therefore, the development of new strategies for improving the efficacy of IP chemotherapy is a certain need. In this work, we propose a new magnetically assisted strategy to elevate drug penetration into peritoneal tumor nodules and improve IP chemotherapy. A computational model was developed to assess the feasibility and predictability of the proposed active drug delivery method. The key tumor pathophysiology, including a spatially heterogeneous construct of leaky vasculature, nonfunctional lymphatics, and dense extracellular matrix (ECM), was reconstructed in silico. The transport of intraperitoneally injected magnetic nanoparticles (MNPs) inside tumors was simulated and compared with the transport of free cytotoxic agents. Our results on magnetically assisted delivery showed an order of magnitude increase in the final intratumoral concentration of drug-coated MNPs with respect to free cytotoxic agents. The intermediate MNPs with the radius range of 200-300 nm yield optimal magnetic drug targeting (MDT) performance in 5-10 mm tumors while the MDT performance remains essentially the same over a large particle radius range of 100-500 nm for a 1 mm radius small tumor. The success of MDT in larger tumors (5-10 mm in radius) was found to be markedly dependent on the choice of magnet strength and tumor-magnet distance while these two parameters were less of a concern in small tumors. We also validated in silico results against experimental results related to tumor interstitial hypertension, conventional IP chemoperfusion, and magnetically actuated movement of MNPs in excised tissue.
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Affiliation(s)
- Milad Shamsi
- a Department of Mechanical and Manufacturing Engineering, BioMEMS and Bioinspired Microfluidic Laboratory , University of Calgary , Calgary , AB , Canada.,b Center for BioEngineering Research and Education , University of Calgary , Calgary , AB , Canada.,c Department of Mechanical Engineering , Isfahan University of Technology , Isfahan , Iran
| | - Amir Sedaghatkish
- c Department of Mechanical Engineering , Isfahan University of Technology , Isfahan , Iran
| | - Morteza Dejam
- d Department of Petroleum Engineering, College of Engineering and Applied Science , University of Wyoming , Laramie , WY , USA
| | - Mohsen Saghafian
- c Department of Mechanical Engineering , Isfahan University of Technology , Isfahan , Iran
| | - Mehdi Mohammadi
- a Department of Mechanical and Manufacturing Engineering, BioMEMS and Bioinspired Microfluidic Laboratory , University of Calgary , Calgary , AB , Canada.,b Center for BioEngineering Research and Education , University of Calgary , Calgary , AB , Canada
| | - Amir Sanati-Nezhad
- a Department of Mechanical and Manufacturing Engineering, BioMEMS and Bioinspired Microfluidic Laboratory , University of Calgary , Calgary , AB , Canada.,b Center for BioEngineering Research and Education , University of Calgary , Calgary , AB , Canada
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Li Y, Hu X, Xia Y, Ji Y, Ruan J, Weir MD, Lin X, Nie Z, Gu N, Masri R, Chang X, Xu HHK. Novel magnetic nanoparticle-containing adhesive with greater dentin bond strength and antibacterial and remineralizing capabilities. Dent Mater 2018; 34:1310-1322. [PMID: 29935766 PMCID: PMC6103821 DOI: 10.1016/j.dental.2018.06.001] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2018] [Revised: 05/22/2018] [Accepted: 06/01/2018] [Indexed: 10/28/2022]
Abstract
OBJECTIVES A nanoparticle-doped adhesive that can be controlled with magnetic forces was recently developed to deliver drugs to the pulp and improve adhesive penetration into dentin. However, it did not have bactericidal and remineralization abilities. The objectives of this study were to: (1) develop a magnetic nanoparticle-containing adhesive with dimethylaminohexadecyl methacrylate (DMAHDM), amorphous calcium phosphate nanoparticles (NACP) and magnetic nanoparticles (MNP); and (2) investigate the effects on dentin bond strength, calcium (Ca) and phosphate (P) ion release and anti-biofilm properties. METHODS MNP, DMAHDM and NACP were mixed into Scotchbond SBMP at 2%, 5% and 20% by mass, respectively. Two types of magnetic nanoparticles were used: acrylate-functionalized iron nanoparticles (AINPs); and iron oxide nanoparticles (IONPs). Each type was added into the resin at 1% by mass. Dentin bonding was performed with a magnetic force application for 3min, provided by a commercial cube-shaped magnet. Dentin shear bond strengths were measured. Streptococcus mutans biofilms were grown on resins, and metabolic activity, lactic acid and colony-forming units (CFU) were determined. Ca and P ion concentrations in, and pH of biofilm culture medium were measured. RESULTS Magnetic nanoparticle-containing adhesive using magnetic force increased the dentin shear bond strength by 59% over SBMP Control (p<0.05). Adding DMAHDM and NACP did not adversely affect the dentin bond strength (p>0.05). The adhesive with MNP+DMAHDM+NACP reduced the S. mutans biofilm CFU by 4 logs. For the adhesive with NACP, the biofilm medium became a Ca and P ion reservoir. The biofilm culture medium of the magnetic nanoparticle-containing adhesive with NACP had a safe pH of 6.9, while the biofilm medium of commercial adhesive had a cariogenic pH of 4.5. SIGNIFICANCE Magnetic nanoparticle-containing adhesive with DMAHDM and NACP under a magnetic force yielded much greater dentin bond strength than commercial control. The novel adhesive reduced biofilm CFU by 4 logs and increased the biofilm pH from a cariogenic pH 4.5-6.9, and therefore is promising to enhance the resin-tooth bond, strengthen tooth structures, and suppress secondary caries at the restoration margins.
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Affiliation(s)
- Yuncong Li
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China; Department of Prosthodontics, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China; Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Xiaoyi Hu
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China; Department of Oral Maxillofacial Surgery, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Yang Xia
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | - Yadong Ji
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Jianping Ruan
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China
| | - Michael D Weir
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA
| | - Xiaoying Lin
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
| | - Ning Gu
- Jiangsu Key Laboratory for Biomaterials and Devices, School of Biological Science and Medical Engineering, Southeast University, Nanjing, Jiangsu 210096, China
| | - Radi Masri
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA.
| | - Xiaofeng Chang
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710004, China.
| | - Hockin H K Xu
- Department of Advanced Oral Sciences & Therapeutics, University of Maryland School of Dentistry, Baltimore, MD 21201, USA; Center for Stem Cell Biology and Regenerative Medicine, University of Maryland School of Medicine, Baltimore, MD 21201, USA; University of Maryland Marlene and Stewart Greenebaum Cancer Center, University of Maryland School of Medicine, Baltimore, MD 21201, USA.
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Ji Y, Choi SK, Sultan AS, Chuncai K, Lin X, Dashtimoghadam E, Melo MA, Weir M, Xu H, Tayebi L, Nie Z, Depireux DA, Masri R. Nanomagnetic-mediated drug delivery for the treatment of dental disease. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2018; 14:919-927. [PMID: 29408655 DOI: 10.1016/j.nano.2018.01.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2017] [Revised: 01/05/2018] [Accepted: 01/15/2018] [Indexed: 12/20/2022]
Abstract
Maintaining the vitality of the dental pulp, the highly innervated and highly vascular, innermost layer of the tooth, is a critical goal of any dental procedure. Upon injury, targeting the pulp with specific therapies is challenging because it is encased in hard tissues. This project describes a method that can effectively deliver therapeutic agents to the pulp. This method relies on the use of nanoparticles that can be actively steered using magnetic forces to the pulp, traveling through naturally occurring channels in the dentin (the middle layer of the tooth). This method can reduce the inflammation of injured pulp and improve the penetration of dental adhesives into dentin. Such a delivery method would be less expensive, and both less painful and less traumatic than existing therapeutic options available for treatment of injured dental pulp. This technique would be simple and could be readily translated to clinical use.
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Affiliation(s)
- Yadong Ji
- Department of Advanced Oral Sciences & Therapeutics, School of Dentistry, University of Maryland Baltimore, Baltimore, MD, USA
| | - Seung K Choi
- Department of Advanced Oral Sciences & Therapeutics, School of Dentistry, University of Maryland Baltimore, Baltimore, MD, USA
| | - Ahmed S Sultan
- Department of Oncology and Diagnostic Sciences, School of Dentistry, University of Maryland Baltimore, Baltimore, MD, USA
| | - Kong Chuncai
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, USA
| | - Xiaoying Lin
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, USA
| | | | - Mary Anne Melo
- Department of Advanced Oral Sciences & Therapeutics, School of Dentistry, University of Maryland Baltimore, Baltimore, MD, USA
| | - Michael Weir
- Department of Advanced Oral Sciences & Therapeutics, School of Dentistry, University of Maryland Baltimore, Baltimore, MD, USA
| | - Huakun Xu
- Department of Advanced Oral Sciences & Therapeutics, School of Dentistry, University of Maryland Baltimore, Baltimore, MD, USA
| | - Lobat Tayebi
- Marquette University School of Dentistry, Milwaukee, WI, USA; Biomaterials and Advanced Drug Delivery Laboratory, School of Medicine, Stanford University, Palo Alto, CA, USA
| | - Zhihong Nie
- Department of Chemistry and Biochemistry, University of Maryland, College Park, MD, USA
| | - Didier A Depireux
- Institute for Systems Research, University of Maryland, College Park, MD, USA; Department of Otorhinolaryngology/Head and Neck Surgery, University of Maryland School of Medicine, Baltimore, MD, USA
| | - Radi Masri
- Department of Advanced Oral Sciences & Therapeutics, School of Dentistry, University of Maryland Baltimore, Baltimore, MD, USA.
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Ruan H, Haber T, Liu Y, Brake J, Kim J, Berlin JM, Yang C. Focusing light inside scattering media with magnetic-particle-guided wavefront shaping. OPTICA 2017; 4:1337-1343. [PMID: 29623290 PMCID: PMC5881932 DOI: 10.1364/optica.4.001337] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Optical scattering has traditionally limited the ability to focus light inside scattering media such as biological tissue. Recently developed wavefront shaping techniques promise to overcome this limit by tailoring an optical wavefront to constructively interfere at a target location deep inside scattering media. To find such a wavefront solution, a "guide-star" mechanism is required to identify the target location. However, developing guidestars of practical usefulness is challenging, especially in biological tissue, which hinders the translation of wavefront shaping techniques. Here, we demonstrate a guidestar mechanism that relies on magnetic modulation of small particles. This guidestar method features an optical modulation efficiency of 29% and enables micrometer-scale focusing inside biological tissue with a peak intensity-to-background ratio (PBR) of 140; both numbers are one order of magnitude higher than those achieved with the ultrasound guidestar, a popular guidestar method. We also demonstrate that light can be focused on cells labeled with magnetic particles, and to different target locations by magnetically controlling the position of a particle. Since magnetic fields have a large penetration depth even through bone structures like the skull, this optical focusing method holds great promise for deep-tissue applications such as optogenetic modulation of neurons, targeted light-based therapy, and imaging.
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Affiliation(s)
- Haowen Ruan
- Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA
- Corresponding author:
| | - Tom Haber
- Department of Molecular Medicine, Beckman Research Institute at City of Hope, Duarte, California 91010, USA
| | - Yan Liu
- Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - Joshua Brake
- Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - Jinho Kim
- Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA
| | - Jacob M. Berlin
- Department of Molecular Medicine, Beckman Research Institute at City of Hope, Duarte, California 91010, USA
| | - Changhuei Yang
- Department of Electrical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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Nguyen Y, Celerier C, Pszczolinski R, Claver J, Blank U, Ferrary E, Sterkers O. Superparamagnetic nanoparticles as vectors for inner ear treatments: driving and toxicity evaluation. Acta Otolaryngol 2016; 136:402-8. [PMID: 26982172 DOI: 10.3109/00016489.2015.1129069] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Conclusion Super paramagnetic nanoparticles (MNP) are a promising vector to achieve controlled drug delivery into the cochlea. Objective The goal of the study was to evaluate the toxicological risk of MNP upon the inner ear. Methods Fe3O4-MNP displacement was studied in various catheter materials, shape, and solvent with a local magnetic field. EC5V cells (derived from the inner ear) were cultured with MNP (100 and 500 nm) at various concentrations or without MNP. Cell survival was assessed with a flow cytometry analysis. Localization of MNP within the cells was studied with confocal microscopy. In vivo, a single intra-cochlear administration of 200 nm MNP (3 × 10(10)MNP/mL, n = 8; 1.5 × 10(12) MNP/mL, n = 6) or saline (n = 14) was performed in guinea pigs. Hearing thresholds were assessed with auditory brainstem responses at Day 7. Results MNP could be concentrated at different locations of the catheter with sequential activation of solenoids. MNP were internalized in the cytoplasm, but not in the nuclei nor in endosomes at 48 h. After 48 h of incubation, no difference for cell survival between the groups was observed, whatever the MNP concentration. A size effect was observed with less survival in the 100 nm group. In guinea pigs at day 7, hearing threshold shift was not different in the three groups.
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Affiliation(s)
- Yann Nguyen
- a Inserm, 'Minimally Invasive Robot-based Hearing Rehabilitation', UMR-S 1159 , Paris , France
- b Sorbonne University, University Pierre et Marie Curie, UPMC Univ Paris 06 , Paris , France
- c Otolaryngology Department , Unit of Otology, Auditory Implants and Skull Base Surgery, Hospital Pitié Salpêtrière, 47-83 boulevard de l'Hôpital, Cedex 13, , Paris , France
| | - Charlotte Celerier
- a Inserm, 'Minimally Invasive Robot-based Hearing Rehabilitation', UMR-S 1159 , Paris , France
- b Sorbonne University, University Pierre et Marie Curie, UPMC Univ Paris 06 , Paris , France
- c Otolaryngology Department , Unit of Otology, Auditory Implants and Skull Base Surgery, Hospital Pitié Salpêtrière, 47-83 boulevard de l'Hôpital, Cedex 13, , Paris , France
| | - Romain Pszczolinski
- a Inserm, 'Minimally Invasive Robot-based Hearing Rehabilitation', UMR-S 1159 , Paris , France
- b Sorbonne University, University Pierre et Marie Curie, UPMC Univ Paris 06 , Paris , France
- c Otolaryngology Department , Unit of Otology, Auditory Implants and Skull Base Surgery, Hospital Pitié Salpêtrière, 47-83 boulevard de l'Hôpital, Cedex 13, , Paris , France
| | - Julien Claver
- d Inserm 'Kidney Immunopathology, Receptors and Inflammation", UMR-S 1149 , Paris , France
| | - Ulrick Blank
- d Inserm 'Kidney Immunopathology, Receptors and Inflammation", UMR-S 1149 , Paris , France
| | - Evelyne Ferrary
- a Inserm, 'Minimally Invasive Robot-based Hearing Rehabilitation', UMR-S 1159 , Paris , France
- b Sorbonne University, University Pierre et Marie Curie, UPMC Univ Paris 06 , Paris , France
- c Otolaryngology Department , Unit of Otology, Auditory Implants and Skull Base Surgery, Hospital Pitié Salpêtrière, 47-83 boulevard de l'Hôpital, Cedex 13, , Paris , France
| | - Olivier Sterkers
- a Inserm, 'Minimally Invasive Robot-based Hearing Rehabilitation', UMR-S 1159 , Paris , France
- b Sorbonne University, University Pierre et Marie Curie, UPMC Univ Paris 06 , Paris , France
- c Otolaryngology Department , Unit of Otology, Auditory Implants and Skull Base Surgery, Hospital Pitié Salpêtrière, 47-83 boulevard de l'Hôpital, Cedex 13, , Paris , France
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