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Putaux JL, Lancelon-Pin C, Choisnard L, Gèze A, Wouessidjewe D. Topological defects in polycrystalline hexosomes from β-cyclodextrin fatty esters. SOFT MATTER 2022; 18:2028-2038. [PMID: 35191906 DOI: 10.1039/d1sm01831k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Colloidal nanoparticles were prepared by aqueous self-assembly of amphiphilic β-cyclodextrins (βCDs) acylated on their secondary face with C14 chains to a total degree of substitution of 7.0, via a thermolysin-catalyzed transesterification process. The small-angle X-ray scattering pattern of the nanoparticles was consistent with a reverse hexagonal organization. Cryo-transmission electron microscopy images revealed particles with spectacular tortuous shapes and consisting of misoriented domains with a regular columnar hexagonal structure, separated by sharp interfaces. Edge dislocations as well as a variety of stepped tilt grain boundaries (GBs) composed of symmetrical and asymmetrical sections, together with one twist GB, were identified from axial views of the columnar organization. The tilt GB structure was analyzed using the concepts of coincidence site lattice and structural units developed to describe the atomic structure of interfaces in various types of polycrystals. The tilt GBs were described using sequences of βCD-C14 columns that differed by the number of neighboring columns (5, 6 or 7) and exhibiting distinctive contrasts. To our knowledge, this is the first time that these types of topological defects are described at the nanometric scale by direct observation of colloidal polycrystalline hexosomes of self-organized amphiphiles.
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Affiliation(s)
- Jean-Luc Putaux
- Univ. Grenoble Alpes, CNRS, CERMAV, F-38000 Grenoble, France.
| | | | - Luc Choisnard
- Univ. Grenoble Alpes, CNRS, DPM, F-38000 Grenoble, France
| | - Annabelle Gèze
- Univ. Grenoble Alpes, CNRS, DPM, F-38000 Grenoble, France
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Mazet R, Yaméogo JBG, Wouessidjewe D, Choisnard L, Gèze A. Recent Advances in the Design of Topical Ophthalmic Delivery Systems in the Treatment of Ocular Surface Inflammation and Their Biopharmaceutical Evaluation. Pharmaceutics 2020; 12:pharmaceutics12060570. [PMID: 32575411 PMCID: PMC7356360 DOI: 10.3390/pharmaceutics12060570] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 06/06/2020] [Accepted: 06/09/2020] [Indexed: 12/17/2022] Open
Abstract
Ocular inflammation is one of the most common symptom of eye disorders and diseases. The therapeutic management of this inflammation must be rapid and effective in order to avoid deleterious effects for the eye and the vision. Steroidal (SAID) and non-steroidal (NSAID) anti-inflammatory drugs and immunosuppressive agents have been shown to be effective in treating inflammation of the ocular surface of the eye by topical administration. However, it is well established that the anatomical and physiological ocular barriers are limiting factors for drug penetration. In addition, such drugs are generally characterized by a very low aqueous solubility, resulting in low bioavailability as only 1% to 5% of the applied drug permeates the cornea. The present review gives an updated insight on the conventional formulations used in the treatment of ocular inflammation, i.e., ointments, eye drops, solutions, suspensions, gels, and emulsions, based on the commercial products available on the US, European, and French markets. Additionally, sophisticated formulations and innovative ocular drug delivery systems will be discussed. Promising results are presented with micro- and nanoparticulated systems, or combined strategies with polymers and colloidal systems, which offer a synergy in bioavailability and sustained release. Finally, different tools allowing the physical characterization of all these delivery systems, as well as in vitro, ex vivo, and in vivo evaluations, will be considered with regards to the safety, the tolerance, and the efficiency of the drug products.
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Affiliation(s)
- Roseline Mazet
- DPM, UMR CNRS 5063, ICMG FR 2607, Faculty of Pharmacy, University of Grenoble Alpes, 38400 St Martin d’Hères, France; (R.M.); (D.W.); (L.C.)
- Grenoble University Hospital, 38043 Grenoble, France
| | | | - Denis Wouessidjewe
- DPM, UMR CNRS 5063, ICMG FR 2607, Faculty of Pharmacy, University of Grenoble Alpes, 38400 St Martin d’Hères, France; (R.M.); (D.W.); (L.C.)
| | - Luc Choisnard
- DPM, UMR CNRS 5063, ICMG FR 2607, Faculty of Pharmacy, University of Grenoble Alpes, 38400 St Martin d’Hères, France; (R.M.); (D.W.); (L.C.)
| | - Annabelle Gèze
- DPM, UMR CNRS 5063, ICMG FR 2607, Faculty of Pharmacy, University of Grenoble Alpes, 38400 St Martin d’Hères, France; (R.M.); (D.W.); (L.C.)
- Correspondence: ; Tel.: +33-476-63-53-01
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Hasibi F, Nasirpour A, Varshosaz J, García‐Manrique P, Blanco‐López MC, Gutiérrez G, Matos M. Formulation and Characterization of Taxifolin‐Loaded Lipid Nanovesicles (Liposomes, Niosomes, and Transfersomes) for Beverage Fortification. EUR J LIPID SCI TECH 2019. [DOI: 10.1002/ejlt.201900105] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Forough Hasibi
- Department of Food Science and TechnologyCollege of AgricultureIsfahan University of Technology Isfahan 84156‐83111 Iran
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - Ali Nasirpour
- Department of Food Science and TechnologyCollege of AgricultureIsfahan University of Technology Isfahan 84156‐83111 Iran
| | - Jaleh Varshosaz
- Department of PharmaceuticsFaculty of Pharmacy and Novel Drug Delivery Systems Research CenterIsfahan University of Medical Sciences Isfahan 81746‐73461 Iran
| | - Pablo García‐Manrique
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - Maria Carmen Blanco‐López
- Department of Physical and Analytical ChemistryUniversity of Oviedo, Oviedo, Spain, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - Gemma Gutiérrez
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
| | - María Matos
- Department of Chemical Engineering and Environmental TechnologyUniversity of Oviedo, Faculty of Chemistry c/Julián Clavería 8 33006 Oviedo Spain
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Investigations on Polymeric Nanoparticles for Ocular Delivery. ADVANCES IN POLYMER TECHNOLOGY 2019. [DOI: 10.1155/2019/1316249] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
In the present investigation, an attempt was made to formulate timolol maleate (TML) loaded polymeric nanoparticles of flax seed gum (FX) and chitosan (CH) for ocular delivery using ionic gelation method. The process of nanoparticle preparation was optimized using 2-factor, 3-level central composite experimental design. The optimal concentration of FX and CH that yielded nanoparticles with minimum particle size (267.06 ± 8.65 nm) and maximum encapsulation efficiency (74.96 ± 4.78%) was found to be 0.10% w/v and 0.08% w/v, respectively. The formulated nanoparticles revealed considerable bioadhesive strength and exhibited sustained release of drug in in vitro diffusion studies. The ex vivo transcorneal penetration study revealed higher corneal penetration of TML compared to marketed eye drops. The confocal scanning laser microscopy (CSLM) studies also confirmed the ability of nanoparticles to penetrate into deeper layers of cornea. The histopathological studies revealed corneal biocompatibility of nanoparticles. The nanoparticles were found to reduce the intra ocular pressure (IOP) in rabbits for prolonged period when compared to conventional eye drops. The results of the present study suggested a promising role of polymeric nanoparticles for ocular drug delivery in treatment of glaucoma.
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Landis RF, Li CH, Gupta A, Lee YW, Yazdani M, Ngernyuang N, Altinbasak I, Mansoor S, Khichi MAS, Sanyal A, Rotello VM. Biodegradable Nanocomposite Antimicrobials for the Eradication of Multidrug-Resistant Bacterial Biofilms without Accumulated Resistance. J Am Chem Soc 2018; 140:6176-6182. [PMID: 29709168 PMCID: PMC6044909 DOI: 10.1021/jacs.8b03575] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Infections caused by multidrug-resistant (MDR) bacteria are a rapidly growing threat to human health, in many cases exacerbated by their presence in biofilms. We report here a biocompatible oil-in-water cross-linked polymeric nanocomposite that degrades in the presence of physiologically relevant biomolecules. These degradable nanocomposites demonstrated broad-spectrum penetration and elimination of MDR bacteria, eliminating biofilms with no toxicity to cocultured mammalian fibroblast cells. Notably, serial passaging revealed that bacteria were unable to develop resistance toward these nanocomposites, highlighting the therapeutic promise of this platform.
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Affiliation(s)
- Ryan F. Landis
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Cheng-Hsuan Li
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Akash Gupta
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Yi-Wei Lee
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Mahdieh Yazdani
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Nipaporn Ngernyuang
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
- Chulabhorn International College of Medicine, Thammasat University, Pathum Thani 12120, Thailand
| | - Ismail Altinbasak
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Sanaa Mansoor
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Muhammadaha A. S. Khichi
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
| | - Amitav Sanyal
- Department of Chemistry, Bogazici University, Istanbul 34342, Turkey
| | - Vincent M. Rotello
- Department of Chemistry, University of Massachusetts Amherst, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
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Biodistribution and preliminary toxicity studies of nanoparticles made of Biotransesterified β–cyclodextrins and PEGylated phospholipids. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2018; 85:7-17. [DOI: 10.1016/j.msec.2017.12.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 09/13/2017] [Accepted: 12/07/2017] [Indexed: 12/31/2022]
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7
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Putaux JL, Lancelon-Pin C, Legrand FX, Pastrello M, Choisnard L, Gèze A, Rochas C, Wouessidjewe D. Self-Assembly of Amphiphilic Biotransesterified β-Cyclodextrins: Supramolecular Structure of Nanoparticles and Surface Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:7917-7928. [PMID: 28492333 DOI: 10.1021/acs.langmuir.7b01136] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A series of β-cyclodextrin (βCD) amphiphilic derivatives with varying degrees of substitution were prepared by acylating βCDs on their secondary face using thermolysin to catalyze the transesterification. After dissolution in acetone, the βCD-Cn derivatives (n = 8, 10, 12, 14) were nanoprecipitated in water, where they self-organized into structured particles that were characterized using cryo-transmission electron microscopy (cryo-TEM) images and small-angle X-ray scattering (SAXS) data. Two types of morphologies and ultrastructures were observed depending on the total degree of substitution (TDS) of the parent derivative. The molecules with TDS < 5 formed nanospheres with a multilamellar organization, whereas those with TDS > 5 self-assembled into barrel-like (n = 8, 10, 12) or more tortuous (n = 14) particles with a columnar inverse hexagonal structure. In particular, faceted βCD-C14 particles (TDS = 7) appeared to be composed of several domains with different orientations that were separated by sharp interfaces. Ultrastructural models were proposed on the basis of cryo-TEM images and the analysis of the contrast distribution in different projections of the lattice. Complementary compression isotherm experiments carried out at the air-water interface also suggested that differences in the molecular conformation of the series of derivatives existed depending on whether TDS was lower or higher than 5.
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Affiliation(s)
| | | | - François-Xavier Legrand
- Institut Galien Paris-Sud, CNRS UMR 8612, Univ. Paris-Sud, Univ. Paris-Saclay , 5 Rue Jean-Baptiste Clément, F-92296 Châtenay-Malabry, France
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8
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Gallego-Yerga L, Posadas I, de la Torre C, Ruiz-Almansa J, Sansone F, Ortiz Mellet C, Casnati A, García Fernández JM, Ceña V. Docetaxel-Loaded Nanoparticles Assembled from β-Cyclodextrin/Calixarene Giant Surfactants: Physicochemical Properties and Cytotoxic Effect in Prostate Cancer and Glioblastoma Cells. Front Pharmacol 2017; 8:249. [PMID: 28533751 PMCID: PMC5420566 DOI: 10.3389/fphar.2017.00249] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Accepted: 04/19/2017] [Indexed: 01/26/2023] Open
Abstract
Giant amphiphiles encompassing a hydrophilic β-cyclodextrin (βCD) component and a hydrophobic calix[4]arene (CA4) module undergo self-assembly in aqueous media to afford core-shell nanospheres or nanocapsules, depending on the nanoprecipitation protocol, with high docetaxel (DTX) loading capacity. The blank and loaded nanoparticles have been fully characterized by dynamic light scattering (DLS), ζ-potential measurements and cryo-transmission electron microscopy (cryo-TEM). The data are compatible with the distribution of the drug between the nanoparticle core and the shell, where it is probably anchored by inclusion of the DTX aromatic moieties in βCD cavities. Indeed, the release kinetics profiles evidenced an initial fast release of the drug, which likely accounts for the fraction hosted on the surface, followed by a slow and sustained release rate, corresponding to diffusion of DTX in the core, which can be finely tuned by modification of the giant amphiphile chemical structure. The ability of the docetaxel-loaded nanoparticles to induce cellular death in different prostate (human LnCap and PC3) and glioblastoma (human U87 and rat C6) cells was also explored. Giant amphiphile-based DTX formulations surpassing or matching the antitumoral activity of the free DTX formulation were identified in all cases with no need to employ any organic co-solvent, thus overcoming the DTX water solubility problems. Moreover, the presence of the βCD shell at the surface of the assemblies is intended to impart stealth properties against serum proteins while permitting nanoparticle surface decoration by supramolecular approaches, paving the way for a new generation of molecularly well-defined antitumoral drug delivery systems with improved specificity and efficiency. Altogether, the results provide a proof of concept of the suitability of the approach based on βCD-CA4 giant amphiphiles to access DTX carriers with tunable properties.
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Affiliation(s)
- Laura Gallego-Yerga
- Departamento de Química Orgánica, Facultad de Química, Universidad de SevillaSevilla, Spain
| | - Inmaculada Posadas
- CIBERNED, Instituto de Salud Carlos IIIMadrid, Spain.,Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La ManchaAlbacete, Spain
| | - Cristina de la Torre
- CIBERNED, Instituto de Salud Carlos IIIMadrid, Spain.,Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La ManchaAlbacete, Spain
| | - Jesús Ruiz-Almansa
- CIBERNED, Instituto de Salud Carlos IIIMadrid, Spain.,Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La ManchaAlbacete, Spain
| | - Francesco Sansone
- Dipartimento di Chimica, Università degli Studi di ParmaParma, Italy
| | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de SevillaSevilla, Spain
| | | | | | - Valentín Ceña
- CIBERNED, Instituto de Salud Carlos IIIMadrid, Spain.,Unidad Asociada Neurodeath, Facultad de Medicina, Universidad de Castilla-La ManchaAlbacete, Spain
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9
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Kaushik CP, Pahwa A, Thakur R, Kaur P. Regioselective synthesis and antimicrobial evaluation of some thioether–amide linked 1,4-disubstituted 1,2,3-triazoles. SYNTHETIC COMMUN 2017. [DOI: 10.1080/00397911.2016.1265983] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- C. P. Kaushik
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar, Haryana, India
| | - Ashima Pahwa
- Department of Chemistry, Guru Jambheshwar University of Science & Technology, Hisar, Haryana, India
| | - Rajesh Thakur
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science & Technology, Hisar, Haryana, India
| | - Pawan Kaur
- Department of Bio & Nanotechnology, Guru Jambheshwar University of Science & Technology, Hisar, Haryana, India
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10
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Ryzhakov A, Do Thi T, Stappaerts J, Bertoletti L, Kimpe K, Sá Couto AR, Saokham P, Van den Mooter G, Augustijns P, Somsen GW, Kurkov S, Inghelbrecht S, Arien A, Jimidar MI, Schrijnemakers K, Loftsson T. Self-Assembly of Cyclodextrins and Their Complexes in Aqueous Solutions. J Pharm Sci 2016; 105:2556-2569. [DOI: 10.1016/j.xphs.2016.01.019] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2015] [Revised: 01/19/2016] [Accepted: 01/21/2016] [Indexed: 12/12/2022]
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Bernela M, Ahuja M, Thakur R. Enhancement of anti-inflammatory activity of glycyrrhizic acid by encapsulation in chitosan-katira gum nanoparticles. Eur J Pharm Biopharm 2016; 105:141-7. [DOI: 10.1016/j.ejpb.2016.06.003] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 06/01/2016] [Accepted: 06/03/2016] [Indexed: 11/29/2022]
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12
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Bernela M, Ahuja M, Thakur R. Enhancement of anti-inflammatory activity of bromelain by its encapsulation in katira gum nanoparticles. Carbohydr Polym 2016; 143:18-24. [PMID: 27083339 DOI: 10.1016/j.carbpol.2016.01.055] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 01/12/2016] [Accepted: 01/25/2016] [Indexed: 11/25/2022]
Abstract
Bromelain-loaded katira gum nanoparticles were synthesized using 3 level optimization process and desirability approach. Nanoparticles of the optimized batch were characterized using particle size analysis, zeta potential, transmission electron microscopy and Fourier-transform infrared spectroscopy. Investigation of their in vivo anti-inflammatory activity by employing carrageenan induced rat-paw oedema method showed that encapsulation of bromelain in katira gum nanoparticles substantially enhanced its anti-inflammatory potential. This may be attributed to enhanced absorption owing to reduced particle size or to protection of bromelain from acid proteases.
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Affiliation(s)
- Manju Bernela
- Department of Bio & NanoTechnology, Guru Jambheshwar University of Science & Technology, Hisar, Haryana 125001, India
| | - Munish Ahuja
- Department of Pharmaceutical Sciences, Guru Jambheshwar University of Science & Technology, Hisar, Haryana 125001, India
| | - Rajesh Thakur
- Department of Bio & NanoTechnology, Guru Jambheshwar University of Science & Technology, Hisar, Haryana 125001, India.
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Effect of Various Concentration of β-Cyclodextrin Inclusion Complexes Containing trans-Cinnamaldehyde by Molecular Self-Assembly. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2015. [DOI: 10.1515/ijfe-2015-0030] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
β-Cyclodextrin inclusion complexes with trans-Cinnamaldehyde (β-CD–CIN) were manufactured with various self-assembly conditions. The encapsulation efficiency of the β-CD–CIN was >90%. Interestingly, the β-CD–CIN had high retention of CIN (>80%) during assembling time at higher β-CD concentration. CIN was released fastest from lowest β-CD–CIN and molar ratio of CIN. In the microscopic observations, higher-concentration β-CD complexes were larger and more easily aggregated. Many individual particles became aggregated or combined with each other to form a single particle. The concentrations of the wall material and core material as well as the self-assembly or storage time affected characteristics of the inclusion complexes.
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Rajendiran N, Venkatesh G, Mohandass T. Fabrication of 2D nanosheet through self assembly behavior of sulfamethoxypyridazine inclusion complexes with α- and β-cyclodextrins. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 123:158-166. [PMID: 24394532 DOI: 10.1016/j.saa.2013.12.053] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 11/26/2013] [Accepted: 12/04/2013] [Indexed: 06/03/2023]
Abstract
A 2D nanosheet was fabricated through the supramolecular self assembly of sulfamethoxypyridazine (SMP) and β-cyclodextrin (β-CD) inclusion complexes. HRTEM image exhibited 2D nanosheet morphology with a length of 1200mm and the sheet thickness of 60mm. It is noted that the nanosheet did not form a single layer aggregation but a bulk aggregation of SMP/β-CD inclusion complex. The formation of this multilayer 2D nanosheet based on the self assembly of SMP/β-CD inclusion complexes is proposed by the topological transformation as well as molecular modeling calculations. But, nanorods are formed in SMP/α-CD inclusion complex indicated that the nature of the CD determined the shape of the self assembled supramolecular architecture. The formation of nanomaterial was characterized by using FT-IR, DSC, PXRD, (1)H NMR, absorption, fluorescence and lifetime measurements.
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Affiliation(s)
- N Rajendiran
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India.
| | - G Venkatesh
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
| | - T Mohandass
- Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamilnadu, India
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Dilbaghi N, Kaur H, Ahuja M, Kumar S. Evaluation of tropicamide-loaded tamarind seed xyloglucan nanoaggregates for ophthalmic delivery. Carbohydr Polym 2013; 94:286-91. [DOI: 10.1016/j.carbpol.2013.01.054] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2012] [Revised: 01/16/2013] [Accepted: 01/19/2013] [Indexed: 10/27/2022]
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17
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Kumar S, Dilbaghi N, Saharan R, Bhanjana G. Nanotechnology as Emerging Tool for Enhancing Solubility of Poorly Water-Soluble Drugs. BIONANOSCIENCE 2012. [DOI: 10.1007/s12668-012-0060-7] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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18
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Yaméogo JB, Gèze A, Choisnard L, Putaux JL, Gansané A, Sirima SB, Semdé R, Wouessidjewe D. Self-assembled biotransesterified cyclodextrins as Artemisinin nanocarriers – I: Formulation, lyoavailability and in vitro antimalarial activity assessment. Eur J Pharm Biopharm 2012; 80:508-17. [DOI: 10.1016/j.ejpb.2011.12.007] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2011] [Revised: 12/16/2011] [Accepted: 12/19/2011] [Indexed: 10/14/2022]
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19
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Rosholm KR, Arouri A, Hansen PL, González-Pérez A, Mouritsen OG. Characterization of fluorinated catansomes: a promising vector in drug-delivery. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:2773-2781. [PMID: 22149538 DOI: 10.1021/la2039834] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Catansomes, which are vesicles prepared from mixtures of oppositely charged surfactants, have been suggested as effective alternatives to phospholipid vesicles, i.e., liposomes, in applications such as drug-delivery. This is mainly due to their enhanced chemical and physical stability as well as to their relatively easy preparation, which is an advantage for large-scale productions. In this study we have investigated catansomes prepared from a perfluorinated anionic surfactant (sodium perfluorooctanoate) premixed with a hydrogenated cationic surfactant (dodecyltrimethylammonium bromide or 1-dodecylpyridinium chloride). The aim was to gain insights into the physicochemical properties of these systems, such as size, stability, surface charge, and membrane morphology, which are essential for their use in drug-delivery applications. The catansomes were mostly unilamellar and 100-200 nm in size, and were stable for more than five months at room temperature. After loading the catansomes with the fluorescent marker calcein, they were found to exhibit an appreciable encapsulation efficiency and a low calcein leakage over time. The addition of fatty acids to calcein-loaded catansomes considerably promoted the release of calcein, and the rate and efficiency of calcein release were found to be proportional to the fatty acid concentration and chain length. Our results prove the feasibility of utilizing catansomes as drug-delivery vehicles as well as provide a means to efficiently release the encapsulated load.
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Affiliation(s)
- Kadla R Rosholm
- BioNano & NanoMedicine, Center of Nano-Science, University of Copenhagen, Universitetsparken 5, DK-2100 København Ø, Denmark
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Fazil M, Shadab, Baboota S, Sahni JK, Ali J. Nanotherapeutics for Alzheimer’s disease (AD): Past, present and future. J Drug Target 2011; 20:97-113. [DOI: 10.3109/1061186x.2011.607499] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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21
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Fernandes C, Soni U, Patravale V. Nano-interventions for neurodegenerative disorders. Pharmacol Res 2010; 62:166-78. [PMID: 20153429 DOI: 10.1016/j.phrs.2010.02.004] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Revised: 02/03/2010] [Accepted: 02/03/2010] [Indexed: 01/17/2023]
Abstract
With an increase in lifespan and changing population demographics, the incidence of central nervous system (CNS) diseases is expected to increase significantly in the 21st century. Contrary to common belief, it is recognized that neurodegenerative diseases may be multisystemic in nature and this presents numerous difficulties for the potential treatment of these disorders. This review focuses on applications in the nano-delivery of therapeutic agents across the blood-brain barrier. We explore various types of nanoparticles, ranging from polymerics to liposomes. A brief discussion of the pharmacokinetic parameters and specific targeting strategies of these nanoparticles follows, presenting suggestions for the mechanisms of cellular and intracellular uptake and possible toxicity considerations of nanoparticles.
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Affiliation(s)
- Clara Fernandes
- Department of Pharmaceutical Sciences and Technology, Institute of Chemical Technology (Autonomous), Matunga, Mumbai 400 019, Maharashtra, India
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22
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23
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Pathak Y, Thassu D, Deleers M. Pharmaceutical Applications of Nanoparticulate Drug-Delivery Systems. ACTA ACUST UNITED AC 2009. [DOI: 10.1201/9781420008449.ch13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
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24
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25
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Gauer C, Jia Z, Wu H, Morbidelli M. Aggregation kinetics of coalescing polymer colloids. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:9703-9713. [PMID: 19492824 DOI: 10.1021/la900963f] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The aggregation behavior of a soft, rubbery colloidal system with a relatively low glass transition temperature, T(g) approximately -20 degrees C, has been investigated. It is found that the average gyration and hydrodynamic radii, R(g) and R(h), measured by light scattering techniques, evolve in time in parallel, without exhibiting the crossover typical of rigid particle aggregation. Cryogenic scanning electron microscopy (cryo-SEM) images reveal sphere-like clusters, indicating that complete coalescence between particles occurs during aggregation. Since coalescence leads to a reduction in the total colloidal surface area, the surfactant adsorption equilibrium, and thus the colloidal stability, change in the course of aggregation. It is found that to simulate the observed kinetic behavior based on the population balance equations, it is necessary to assume that all the clusters are spherical and to account for variations in the colloidal stability of each aggregating particle pair with time. This indicates that, for the given system, the coalescence is very fast, i.e., its time scale is much smaller than that of the aggregation.
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Affiliation(s)
- Cornelius Gauer
- Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zurich, 8093 Zurich, Switzerland
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26
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Gèze A, Choisnard L, Putaux JL, Wouessidjewe D. Colloidal systems made of biotransesterified α, β and γ cyclodextrins grafted with C10 alkyl chains. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2008.08.027] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Luykx DMAM, Peters RJB, van Ruth SM, Bouwmeester H. A review of analytical methods for the identification and characterization of nano delivery systems in food. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2008; 56:8231-8247. [PMID: 18759445 DOI: 10.1021/jf8013926] [Citation(s) in RCA: 104] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Detection and characterization of nano delivery systems is an essential part of understanding the benefits as well as the potential toxicity of these systems in food. This review gives a detailed description of food nano delivery systems based on lipids, proteins, and/or polysaccharides and investigates the current analytical techniques that can be used for the identification and characterization of these delivery systems in food products. The analytical approaches have been subdivided into three groups; separation techniques, imaging techniques, and characterization techniques. The principles of the techniques together with their advantages and drawbacks, and reported applications concerning nano delivery systems, or otherwise related compounds are discussed. The review shows that for a sufficient characterization, the nano delivery systems need to be separated from the food matrix, for which high-performance liquid chromatography or field flow fractionation are the most promising techniques. Subsequently, online photon correlation spectroscopy and mass spectrometry seem to be a convenient combination of techniques to characterize a wide variety of nano delivery systems.
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Affiliation(s)
- Dion M A M Luykx
- Institute of Food Safety, RIKILT, Wageningen UR, P.O. Box 230, 6700 AE Wageningen, The Netherlands
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Vega-Villa KR, Takemoto JK, Yáñez JA, Remsberg CM, Forrest ML, Davies NM. Clinical toxicities of nanocarrier systems. Adv Drug Deliv Rev 2008; 60:929-38. [PMID: 18313790 DOI: 10.1016/j.addr.2007.11.007] [Citation(s) in RCA: 178] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2007] [Accepted: 11/19/2007] [Indexed: 10/22/2022]
Abstract
Toxicity of nanocarrier systems involves physiological, physicochemical, and molecular considerations. Nanoparticle exposures through the skin, the respiratory tract, the gastrointestinal tract and the lymphatics have been described. Nanocarrier systems may induce cytotoxicity and/or genotoxicity, whereas their antigenicity is still not well understood. Nanocarrier may alter the physicochemical properties of xenobiotics resulting in pharmaceutical changes in stability, solubility, and pharmacokinetic disposition. In particular, nanocarriers may reduce toxicity of hydrophobic cancer drugs that are solubilized. Nano regulation is still undergoing major changes to encompass environmental, health, and safety issues. The rapid commercialization of nanotechnology requires thoughtful environmental, health and safety research, meaningful, and an open discussion of broader societal impacts, and urgent toxicological oversight action.
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Gèze A, Chau LT, Choisnard L, Mathieu JP, Marti-Batlle D, Riou L, Putaux JL, Wouessidjewe D. Biodistribution of intravenously administered amphiphilic β-cyclodextrin nanospheres. Int J Pharm 2007; 344:135-42. [PMID: 17692481 DOI: 10.1016/j.ijpharm.2007.06.050] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 06/21/2007] [Accepted: 06/27/2007] [Indexed: 11/18/2022]
Abstract
Amphiphilic beta-cyclodextrin (betaCDa) nanospheres (mean diameter 90-110 nm) prepared by the solvent displacement method were developed as a colloidal drug delivery system. In order to survey the fate of these nanoparticles, the amphiphilic beta-cyclodextrin was first iodinated by a two-step procedure involving iodination of the primary face followed by an acylation of the secondary face. After radiolabeling of this derivative with (125)I, nanospheres made of betaCDa/betaCDa (125)I were formulated. After a single intravenous injection of labeled nanoparticles in mice, the organ distribution was analyzed from 10 min to 6 days. A rapid clearance of (125)I-labeled betaCDa nanospheres from the blood circulation to the mononuclear phagocyte system was visualized by non-invasive planar imaging study. Radioactivity measurements in organs showed that the nanospheres mainly concentrated in the liver and the spleen where 28 and 24% of the radioactivity per gram of organ was, respectively, found 10 min after injection. At the opposite, the blood activity was low at that time and become negligible thereafter. Finally, the fact that no particular sign of toxicity is observed in injected animals should be emphasized since it is the first report on intravenous administration of betaCDa nanoparticles.
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Affiliation(s)
- A Gèze
- Université Joseph Fourier, UFR de Pharmacie, ICMG FR-2607, DPM UMR UJF/CNRS 5063, BP 53, F-38041 Grenoble Cedex 9, France.
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He Y, Fu P, Shen X, Gao H. Cyclodextrin-based aggregates and characterization by microscopy. Micron 2007; 39:495-516. [PMID: 17706427 DOI: 10.1016/j.micron.2007.06.017] [Citation(s) in RCA: 196] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2007] [Accepted: 06/04/2007] [Indexed: 11/27/2022]
Abstract
Cyclodextrin-based aggregates have been widely investigated with microscopies such as STM, AFM, SEM, TEM, and fluorescent microscopy to obtain the direct morphology and structure of samples. In the present review, we discuss various types of cyclodextrin aggregates, that is, native and modified cyclodextrins, inclusion complexes and their aggregates of cyclodextrins, cyclodextrin rotaxanes and polyrotaxanes, cyclodextrin nanotubes and their secondary assembly, and other high-order aggregates of cyclodextrins. Especially, we focus on the use of microscopy to characterize above aggregates. The application of modern microscopy tools promotes the investigation on cyclodextrins.
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Affiliation(s)
- Yifeng He
- Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing, China
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Choisnard L, Gèze A, Yaméogo BGJ, Putaux JL, Wouessidjewe D. Miscellaneous nanoaggregates made of beta-CD esters synthesised by an enzymatic pathway. Int J Pharm 2007; 344:26-32. [PMID: 17681685 DOI: 10.1016/j.ijpharm.2007.06.026] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2007] [Revised: 06/15/2007] [Accepted: 06/19/2007] [Indexed: 10/23/2022]
Abstract
Various beta-cyclodextrin (beta-CD) fatty esters with different chain lengths (C4-C14) were synthesised by transesterification of beta-cyclodextrin by vinyl fatty ester using thermolysin in DMSO. For each cyclodextrin derivatives, two batches of synthesis were realized. The ability of these derivatives to form nano-organized systems was investigated through the solvent displacement technique. During the formulation step, the effects of the initial concentration of beta-CD fatty esters in the organic phase and that of the final volume of the aqueous non-solvent phase were studied. Except for the beta-CD C4 ester, the transesterified beta-CD derivatives led to measurable nanoparticles. Cryo-electron microscopy images showed a significant morphological variability. Spherical, rod-like or more irregularly-shaped nano-objects were observed with either matricial or lamellar structures. A statistical analysis by a two-way ANOVA was computed for each class of beta-cyclodextrin esters in order to determine the effects of batch and formulation on the final size of nanoparticles.
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Affiliation(s)
- L Choisnard
- Université Joseph-Fourier, UFR de pharmacie ICMG FR-2607 - DPM UMR UJF/CNRS 5063, 470 rue de la Chimie, BP 53, F-38041, Grenoble cedex 9, France.
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Choisnard L, Gèze A, Putaux JL, Wong YS, Wouessidjewe D. Nanoparticles of β-Cyclodextrin Esters Obtained by Self-Assembling of Biotransesterified β-Cyclodextrins. Biomacromolecules 2006; 7:515-20. [PMID: 16471924 DOI: 10.1021/bm0507655] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of decanoate beta-cyclodextrin esters (beta-CDd) and hexanoate beta-cyclodextrin esters (beta-CDh) was biocatalyzed by thermolysin from native beta-cyclodextrin (beta-CD) and vinyl hexanoate or vinyl decanoate used as acyl donors. The products were chemically characterized by infrared, NMR, and mass spectrometry. Both beta-CDd and beta-CDh esters were identified as a mixture of beta-CD preferentially substituted on the C2 position by the corresponding acyl chain. The degree of substitution varied from 2 to 7 for beta-CDd and from 4 to 8 for beta-CDh. The ability of beta-CD esters to self-organize into nanoparticles was tested using a nanoprecipitation technique in various solvents. The mean size diameter and polydispersity measured by quasi-elastic light scattering were dramatically affected by the nature of solvent (acetone, ethanol, or tetrahydrofuran) used in the nanoprecipitation technique. When directly observed using cryo-transmission electron microscopy, beta-CDh appeared as uniformly dense nanospheres, whereas beta-CDd exhibited a multilamellar onion-like organization. A structural model was rationalized for the beta-CDd nanoparticles.
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Affiliation(s)
- Luc Choisnard
- Université Joseph Fourier, UFR de Pharmacie, ICMG DPM UMR CNRS 5063, 5 Avenue de Verdun, F-38243 Meylan Cedex, France.
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