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Abo-Ser MM, Toson ESA, El-Bindary AA, Schlatter G, Shoueir KR. Smart chitosan nanogel for targeted doxorubicin delivery, ensuring precise release, and minimizing side effects in Ehrlich ascites carcinoma-bearing mice. Int J Biol Macromol 2024; 267:131390. [PMID: 38582473 DOI: 10.1016/j.ijbiomac.2024.131390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/16/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
In recent decades, bio-polymeric nanogels have become a forefront in medical research as innovative in-vivo drug carriers. This study introduces a pH-sensitive chitosan nanoparticles/P(N-Isopropylacrylamide-co-Acrylic acid) nanogel (CSNPs/P(NIPAm-co-AAc)), making significant advancements. The nanogel effectively encapsulated doxorubicin hydrochloride (Dx. HCl), a model drug, within its compartments through electrostatic binding. Comparing nano chitosan (CSNPs) before and after integrating copolymerized P(NIPAm-co-AAc), highlighting an improved and adaptable nanogel structure with responsive behaviors. The intraperitoneal delivery of Dx-loaded nanogel (Dx@N.gel) to Ehrlich ascites carcinoma (Eh)-bearing mice at doses equivalent to 1.5 and 3 mg/kg of Dx per day for 14 days exhibited superiority over the administration of free Dx. Dx@N.gel demonstrated heightened anticancer activity, significantly improving mean survival rates in Eh mice. The nanogel's multifaceted defense mechanism mitigated oxidative stress, inhibited lipid peroxidation, and curbed nitric oxide formation induced by free Dx. It effectively countered hepatic DNA deterioration, normalized elevated liver and cardiac enzyme levels, and ameliorated renal complications. This pH-responsive CSNPs/P(NIPAm-co-AAc) nanogel loaded with Dx represents a paradigm shift in antitumor drug delivery. Its efficacy and ability to minimize side effects, contrasting sharply with those of free Dx, offer a promising future where potent cancer therapies seamlessly align with patient well-being.
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Affiliation(s)
- Magy M Abo-Ser
- Department of Chemistry, Faculty of Science, Damietta University, 34517 Damietta, Egypt
| | - El-Shahat A Toson
- Department of Chemistry, Faculty of Science, Damietta University, 34517 Damietta, Egypt
| | - Ashraf A El-Bindary
- Department of Chemistry, Faculty of Science, Damietta University, 34517 Damietta, Egypt
| | - Guy Schlatter
- ICPEES, Institut de Chimie et Procédé pour l'Energie, l'Environnement et la Santé, CNRS, UMR 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France.
| | - Kamel R Shoueir
- ICPEES, Institut de Chimie et Procédé pour l'Energie, l'Environnement et la Santé, CNRS, UMR 7515, Université de Strasbourg, 25 rue Becquerel, 67087 Strasbourg Cedex 2, France; Institute of Nanoscience & Nanotechnology, Kafrelsheikh University, 33516 Kafrelsheikh, Egypt.
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2
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Hassani Besheli N, Mottaghitalab F, Eslami M, Gholami M, Kundu SC, Kaplan DL, Farokhi M. Sustainable Release of Vancomycin from Silk Fibroin Nanoparticles for Treating Severe Bone Infection in Rat Tibia Osteomyelitis Model. ACS APPLIED MATERIALS & INTERFACES 2017; 9:5128-5138. [PMID: 28106379 DOI: 10.1021/acsami.6b14912] [Citation(s) in RCA: 113] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
The successful treatment of bone infections is a major challenge in the field of orthopedics. There are some common methods for treating bone infections, including systemic antibiotic administration, local nondegradable drug vehicles, and surgical debridement, and each of these approaches has advantages and disadvantages. In the present study, the antibiotic vancomycin (VANCO) was loaded in silk fibroin nanoparticles (SFNPs) and the complexes were then entrapped in silk scaffolds to form sustained drug delivery systems. The release kinetics of VANCO from SFNPs alone and when the SFNPs were entrapped in silk scaffolds were assessed at two different pH values, 4.5 and 7.4, that affected the release profiles of VANCO. Disk diffusion tests performed with pathogens causing osteomyelitis methicillin-resistant Staphylococcus aureus (MRSA) showed antibacterial activity of the released drug at two different pH values. Additionally, injection of 8 × 106 CFU MRSA in rat's tibia induced severe osteomyelitis disease. Radiographic and histopathological analyses were performed to evaluate the effectiveness of treatment after 6 weeks. The VANCO-loaded silk fibroin nanoparticles entrapped in scaffolds reduced bone infections at the defected site with better outcomes than the other treatment groups. In conclusion, the delivery system with good biocompatibility and sustained release properties would be appropriate for further study in the context of osteomyelitis disease.
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Affiliation(s)
- Negar Hassani Besheli
- School of Chemical Engineering, Collage of Engineering, University of Tehran , P.O. Box 11155-4563, Tehran 1417466191, Iran
| | - Fatemeh Mottaghitalab
- Nanotechnology Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences , P.O. Box 14155-6451, Tehran 1417613151, Iran
| | - Masoud Eslami
- Materials Science & Engineering Department, Sharif University of Technology , P.O. Box 11365-9466, Tehran 145888-9694, Iran
| | - Mahdi Gholami
- Faculty of Pharmacy and Pharmaceutical Science Research Center, Tehran University of Medical Sciences , P.O. Box 14155-6451, Tehran 1417613151, Iran
| | - Subhas C Kundu
- 3Bs Research Group, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, University of Minho , AvePark, Barco, Guimaraes 4805-017, Portugal
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University , 4 Colby Street, Medford, Massachusetts 02155, United States
| | - Mehdi Farokhi
- National Cell Bank of Iran, Pasteur Institute of Iran , P.O. Box 1316943551, Tehran 1316943551, Iran
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3
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Silk fibroin nanoparticle as a novel drug delivery system. J Control Release 2015; 206:161-76. [DOI: 10.1016/j.jconrel.2015.03.020] [Citation(s) in RCA: 242] [Impact Index Per Article: 26.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2015] [Revised: 03/17/2015] [Accepted: 03/18/2015] [Indexed: 01/12/2023]
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4
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Zarouni M, Salehi R, Akbarzadeh A, Samadi N, Davaran S, Ramezani F, Dariushnejad H. Biocompatible Polymer Coated Paramagnetic Nanoparticles for Doxorubicin Delivery: Synthesis and Anticancer Effects Against Human Breast Cancer Cells. INT J POLYM MATER PO 2015. [DOI: 10.1080/00914037.2014.1002129] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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5
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Investigation and optimization of formulation factors of a hydrogel network based on kappa carrageenan–pregelatinized starch blend using an experimental design. Colloids Surf A Physicochem Eng Asp 2014. [DOI: 10.1016/j.colsurfa.2014.01.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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6
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Fazilati M. Folate decorated magnetite nanoparticles: Synthesis and targeted therapy against ovarian cancer. Cell Biol Int 2013; 38:154-63. [DOI: 10.1002/cbin.10167] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Accepted: 07/11/2013] [Indexed: 11/06/2022]
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7
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Javid A, Ahmadian S, Saboury AA, Kalantar SM, Rezaei-Zarchi S. Chitosan-coated superparamagnetic iron oxide nanoparticles for doxorubicin delivery: synthesis and anticancer effect against human ovarian cancer cells. Chem Biol Drug Des 2013; 82:296-306. [PMID: 23594157 DOI: 10.1111/cbdd.12145] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2012] [Revised: 03/08/2013] [Accepted: 04/02/2013] [Indexed: 11/28/2022]
Abstract
Doxorubicin-loaded chitosan-coated superparamagnetic iron oxide nanoparticles (Fe3 O4 ; SPIO-NPs) were prepared by coprecipitation and emulsification cross-linking method and uniform NPs with an average particle size of 82 nm, with high encapsulation efficiencies, were obtained. The drug-loading efficiency of doxorubicin (3.2 mg/mg NPs) showed better results for the chitosan-loaded SPIO-NPs as compared to the bare ones (0.5 mg/mg; p < 0.05). The incubation of A2780 and OVCAR-3 human ovarian cancer cells with doxorubicin-loaded and doxorubicin-loaded chitosan-coated SPIO-NPs, for 24, 48, 72, 96, and 120 h, showed significant IC50 (2.0 ± 0.6 and 7.1 ± 2.7 mm doxorubicin) and IC90 (4.0 ± 9.2 and 10 ± 0.5 mm doxorubicin), respectively, after 96 h of incubation. While, 95% and 98% growth inhibition was seen in A2780 and OVCAR-3 cells after the 96-h exposure to the doxorubicin-chitosan-SPIO-NPs (p < 0.05). A 5-day (120 h) incubation with doxorubicin-chitosan-SPIO-NPs showed that A2780 and OVCAR-3 cells were able to uptake 120 and 110 pg iron/cell, respectively, when treated with doxorubicin-chitosan-SPIO-NPs for 72 h (p < 0.05).
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Affiliation(s)
- Amaneh Javid
- Department of Biochemistry, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
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8
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Chandra Shekar B, Jukanti R, Shashank AS, Devraj R. Improved Ex Vivo Transcutaneous Permeation of Diclofenac from Solid Lipid Nanoparticles in the Presence of Novel Long-Chain Alkyl Esters of PABA. J DISPER SCI TECHNOL 2011. [DOI: 10.1080/01932691.2010.498248] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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9
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Niu M, Lu Y, Hovgaard L, Wu W. Liposomes containing glycocholate as potential oral insulin delivery systems: preparation, in vitro characterization, and improved protection against enzymatic degradation. Int J Nanomedicine 2011; 6:1155-66. [PMID: 21822379 PMCID: PMC3148843 DOI: 10.2147/ijn.s19917] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Indexed: 01/28/2023] Open
Abstract
Background: Oral delivery of insulin is challenging and must overcome the barriers of gastric and enzymatic degradation as well as low permeation across the intestinal epithelium. The present study aimed to develop a liposomal delivery system containing glycocholate as an enzyme inhibitor and permeation enhancer for oral insulin delivery. Methods: Liposomes containing sodium glycocholate were prepared by a reversed-phase evaporation method followed by homogenization. The particle size and entrapment efficiency of recombinant human insulin (rhINS)-loaded sodium glycocholate liposomes can be easily adjusted by tuning the homogenization parameters, phospholipid:sodium glycocholate ratio, insulin:phospholipid ratio, water:ether volume ratio, interior water phase pH, and the hydration buffer pH. Results: The optimal formulation showed an insulin entrapment efficiency of 30% ± 2% and a particle size of 154 ± 18 nm. A conformational study by circular dichroism spectroscopy and a bioactivity study confirmed the preserved integrity of rhINS against preparative stress. Transmission electron micrographs revealed a nearly spherical and deformed structure with discernable lamella for sodium glycocholate liposomes. Sodium glycocholate liposomes showed better protection of insulin against enzymatic degradation by pepsin, trypsin, and α-chymotrypsin than liposomes containing the bile salt counterparts of sodium taurocholate and sodium deoxycholate. Conclusion: Sodium glycocholate liposomes showed promising in vitro characteristics and have the potential to be able to deliver insulin orally.
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Affiliation(s)
- Mengmeng Niu
- School of Pharmacy, Fudan University, Shanghai, People's Republic of China
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10
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Bolzinger MA, Briançon S, Chevalier Y. Nanoparticles through the skin: managing conflicting results of inorganic and organic particles in cosmetics and pharmaceutics. WILEY INTERDISCIPLINARY REVIEWS-NANOMEDICINE AND NANOBIOTECHNOLOGY 2011; 3:463-478. [PMID: 21618448 DOI: 10.1002/wnan.146] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Toxicity of nanoparticles is a current scientific issue because of the enhanced reactivity of nanomaterials and their possible easy penetration into the body arising from their small size. Because inorganic particles are present in sunscreen cosmetic products, attention has been focused on cutaneous penetration. But organic particles of various sizes are also used in pharmaceutical applications such as skin care and transdermal drug delivery. It appears that organic and inorganic particles penetrate the skin quite differently. The apparent discrepancy is addressed in this review focusing on skin penetration of inorganic sunscreen particles and organic particles for drug delivery. After a short description of the physicochemical properties of these particles, the skin penetration of both types is reviewed with emphasis on the mechanistic issues and the differences that could account for such conflicting results. It appears that investigations by cosmetic and pharmaceutical communities focused on the main issue, i.e., no toxicity in cosmetics and maximum activity of the drug in pharmaceutics. This leaves several fundamental issues as open questions and this does not allow a rigorous comparison between both types of material. While it is claimed that inorganic nanoparticles can only penetrate the outer layer of the skin, it appears that organic submicron particles and even microparticles reach the dermis in an in vitro cell. Besides particle size, the surface chemistry of the particles and the presence of other excipients in the formulations contribute to skin absorption.
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11
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Gethard K, Mitra S. Carbon nanotube enhanced membrane distillation for online preconcentration of trace pharmaceuticals in polar solvents. Analyst 2011; 136:2643-8. [DOI: 10.1039/c1an15140a] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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12
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Moddaresi M, Brown MB, Zhao Y, Tamburic S, Jones SA. The role of vehicle–nanoparticle interactions in topical drug delivery. Int J Pharm 2010; 400:176-82. [DOI: 10.1016/j.ijpharm.2010.08.012] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2009] [Revised: 08/05/2010] [Accepted: 08/10/2010] [Indexed: 11/15/2022]
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13
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Bharali DJ, Mousa SA. Emerging nanomedicines for early cancer detection and improved treatment: Current perspective and future promise. Pharmacol Ther 2010; 128:324-35. [DOI: 10.1016/j.pharmthera.2010.07.007] [Citation(s) in RCA: 150] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2010] [Accepted: 07/14/2010] [Indexed: 11/26/2022]
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14
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Zhao Y, Brown MB, Jones SA. Pharmaceutical foams: are they the answer to the dilemma of topical nanoparticles? NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2010; 6:227-36. [DOI: 10.1016/j.nano.2009.08.002] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2009] [Revised: 07/23/2009] [Accepted: 08/04/2009] [Indexed: 11/29/2022]
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15
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Fiala S, Brown MB, Jones SA. An investigation into the influence of binary drug solutions upon diffusion and partition processes in model membranes. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.60.12.0007] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
Few studies have assessed the impact of binary systems on the fundamental mathematical models that describe drug permeation. The aim of this work was to determine the influence of varying the proportions of prilocaine and lidocaine in a binary saturated solution on mass transfer across synthetic membranes. Infinite-dose permeation studies were performed using Franz diffusion cells with either regenerated cellulose or silicone membranes, and partition coefficients were determined by drug loss over 24 h. There was a linear relationship between the flux of prilocaine and lidocaine through regenerated cellulose membrane (R2 ≥ 0.985, n = 5) and their normalised ratio in solution. This linear model was also applicable for the permeation of prilocaine through silicone membrane (R2 = 0.991, n = 5), as its partition coefficient was independent of the drug ratio (15.84 ± 1.41). However, the partition coefficient of lidocaine increased from 27.22 ± 1.68 to 47.03 ± 3.32 as the ratio of prilocaine increased and this resulted in a non-linear relationship between permeation and drug ratio. Irrespective of the membrane used, the permeation of one drug from a binary system was hindered by the presence of the second, which could be attributed to a reduction in available membrane diffusion volume.
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Affiliation(s)
- Sarah Fiala
- Pharmaceutical Science Division, King's College London, 150 Stamford Street, London SE1 9NH, UK
| | - Marc B Brown
- School of Pharmacy, University of Hertfordshire, College Lane, Hatfield, Herts. AL10 9AB, UK
- MedPharm Ltd, Unit 3/Chancellor Court, 50 Occam Road, Surrey Research Park, Guildford GU2 7YN, UK
| | - Stuart A Jones
- Pharmaceutical Science Division, King's College London, 150 Stamford Street, London SE1 9NH, UK
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16
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Li F, Li J, Wen X, Zhou S, Tong X, Su P, Li H, Shi D. Anti-tumor activity of paclitaxel-loaded chitosan nanoparticles: An in vitro study. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2009.07.001] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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17
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Wu X, Price GJ, Guy RH. Disposition of Nanoparticles and an Associated Lipophilic Permeant following Topical Application to the Skin. Mol Pharm 2009; 6:1441-8. [DOI: 10.1021/mp9001188] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiao Wu
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., and Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K
| | - Gareth J. Price
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., and Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K
| | - Richard H. Guy
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, BA2 7AY, U.K., and Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, U.K
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18
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Wu X, Guy R. Applications of nanoparticles in topical drug delivery and in cosmetics. J Drug Deliv Sci Technol 2009. [DOI: 10.1016/s1773-2247(09)50080-9] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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Frelichowska J, Bolzinger MA, Valour JP, Mouaziz H, Pelletier J, Chevalier Y. Pickering w/o emulsions: drug release and topical delivery. Int J Pharm 2008; 368:7-15. [PMID: 18992799 DOI: 10.1016/j.ijpharm.2008.09.057] [Citation(s) in RCA: 189] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2008] [Revised: 09/24/2008] [Accepted: 09/24/2008] [Indexed: 10/21/2022]
Abstract
The skin absorption from Pickering emulsions as a new dosage form was investigated for the first time. Pickering emulsions are stabilized by adsorbed solid particles instead of emulsifier molecules. They are promising dosage forms that significantly differ from classical emulsions within several features. The skin permeation of a hydrophilic model penetrant (caffeine) was investigated from a w/o Pickering emulsion and compared to a w/o classical emulsion stabilized with an emulsifier. Both emulsions had the same composition and physicochemical properties in order to focus on the effect of the interfacial layer on the drug release and skin absorption processes. The highest permeation rates were obtained from the Pickering emulsion with a pseudo-steady state flux of 25 microg cm(-2)h(-1), threefold higher than from a classical emulsion (9.7 microg cm(-2)h(-1)). After 24h exposure, caffeine was mostly in the receptor fluid and in the dermis; cumulated amounts of caffeine were higher for the Pickering emulsion. Several physicochemical phenomena were investigated for clearing up the mechanisms of enhanced permeation from the Pickering emulsion. Among them, higher adhesion of Pickering emulsion droplets to skin surface was disclosed. The transport of caffeine adsorbed on silica particles was also considered relevant since skin stripping showed that aggregates of silica particles entered deeply the stratum corneum.
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Affiliation(s)
- Justyna Frelichowska
- Université Lyon 1, Laboratoire de Dermopharmacie et Cosmétologie, Institut des Sciences Pharmaceutiques et Biologiques, Lyon F-69003, France
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Li J, Zhai Y, Zhang B, Deng L, Xu Y, Dong A. Methoxy poly(ethylene glycol)-block-poly(D,L-lactic acid) copolymer nanoparticles as carriers for transdermal drug delivery. POLYM INT 2007. [DOI: 10.1002/pi.2339] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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21
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Chen Q, Sowa DA, Cai J, Gabathuler R. Efficient One-Pot Synthesis of Doxorubicin Conjugates Through Its Amino Group to Melanotransferrin P97. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-120021829] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Qingqi Chen
- a Biomarin Pharmaceutical Inc. , Novato, California, USA
| | - Damian A. Sowa
- a Biomarin Pharmaceutical Inc. , Novato, California, USA
| | - Jianlin Cai
- a Biomarin Pharmaceutical Inc. , Novato, California, USA
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22
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Lboutounne H, Guillaume YC, Michel L, Makki S, Humbert P, Millet J. Study and development of encapsulated forms of 4, 5?, 8-Trimethylpsoralen for topical drug delivery. Drug Dev Res 2004. [DOI: 10.1002/ddr.10339] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Kristl J, Volk B, Ahlin P, Gombac K, Sentjurc M. Interactions of solid lipid nanoparticles with model membranes and leukocytes studied by EPR. Int J Pharm 2003; 256:133-40. [PMID: 12695019 DOI: 10.1016/s0378-5173(03)00070-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Solid lipid nanoparticles (SLN) are colloidal systems which have been proposed for several administration routes. Only limited data are available about the mechanism and rate of interaction of SLN with cells and tissues. The aim of our study was to investigate interactions of SLN with model membranes (liposomes) and cells (leukocytes). SLN dispersions composed of glyceryl tripalmitate, phosphatidylcholine, water, and poloxamer 188 or Tween 20 were prepared by the melt-emulsification process. Spin-labeled phosphatidylcholine (PC(10,3)) and the methylester of doxyl palmitic acid (MeFASL(10,3)) were incorporated into SLN as spin probes (SPs) in order to determine the rate and mechanism of cell interaction by electron paramagnetic resonance (EPR) spectroscopy. Our results indicate that the exchange of SP between SLN and liposomes is much faster for MeFASL(10,3) than for PC(10,3), probably due to the smaller size of the former. In contrast to liposomes, in leukocytes no significant difference in the transfer rates of the two SP was observed after incubation, suggesting that there is an uptake of SLN to leukocytes (endocytosis) although simultaneous SP diffusion is not excluded. The interaction of SLN with leukocytes appears to depend significantly on the stabilizer used. Transfer of PC(10,3) from SLN coated with poloxamer 188 is much faster than from SLN coated with Tween 20.
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Affiliation(s)
- J Kristl
- Faculty of Pharmacy, University of Ljubljana, Askerceva 7, 1000, Ljubljana, Slovenia.
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Lboutounne H, Chaulet JF, Ploton C, Falson F, Pirot F. Sustained ex vivo skin antiseptic activity of chlorhexidine in poly(epsilon-caprolactone) nanocapsule encapsulated form and as a digluconate. J Control Release 2002; 82:319-34. [PMID: 12175746 DOI: 10.1016/s0168-3659(02)00142-6] [Citation(s) in RCA: 104] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In this work, the sustained bactericidal activity of chlorhexidine base loaded poly(epsilon-caprolactone), PCL, nanocapsules against Staphylococcus epidermidis inoculated onto porcine ear skin was investigated. Drug loaded nanocapsules were prepared by the interfacial polymer deposition following solvent displacement method, then characterized by photon correlation spectroscopy, electrophoretic measurements, transmission and scanning electron microscopy. Antimicrobial activity of these colloidal carriers was evaluated (i) in vitro against eight strains of bacteria, and (ii) ex vivo against Staphylococcus epidermidis inoculated for 12 h onto porcine ear skin surface treated for 3 min either with 0.6% chlorhexidine base loaded or unloaded nanocapsules suspended in hydrogel, or 1% chlorhexidine digluconate aqueous solution. Chlorhexidine absorption into the stratum corneum (SC) was evaluated by the tape-stripping method. The results showed that chlorhexidine nanocapsules in aqueous suspension having a 200-300 nm size and a positive charge exhibited similar minimum inhibitory concentrations against several bacteria with chlorhexidine digluconate aqueous solution. Ex vivo, there was a significant reduction in the number of colony forming units (CFUs) from 3-min treated skin with chlorhexidine nanocapsule suspension (5 to <1 log(10)) compared to chlorhexidine digluconate solution (5 to 2.02 log(10)) after a 8-h artificial contamination. After a 12-h artificial contamination, both formulations failed to achieve a 5 log(10) reduction. Furthermore, from a 3-min treatment with an identical applied dose and a subsequent 12-h artificial contamination, a residual chlorhexidine concentration in the SC was found to be three-fold higher with chlorhexidine nanocapsule suspension than with chlorhexidine digluconate solution. Interestingly, nanocapsules were shown in porcine skin follicles. Consequently, a topical application of chlorhexidine base-loaded positively charged nanocapsules in an aqueous gel achieved a sustained release of bactericide against Staphylococcus epidermidis for at least 8 h. Enhancement of drug delivery by mediating a more direct and prolonged contact between the carrier and (i) bacteria, (ii) skin surface, and (iii) skin follicles was assumed.
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Affiliation(s)
- Hassan Lboutounne
- Laboratoire de Pharmacotechnie, Biopharmacie et Cosmétologie, Institut des Sciences Pharmaceutiques et Biologiques, Université Claude Bernard Lyon I, 8, avenue Rockefeller, F-69373, Lyon, Cedex 08, France
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Pietzonka P, Rothen-Rutishauser B, Langguth P, Wunderli-Allenspach H, Walter E, Merkle HP. Transfer of lipophilic markers from PLGA and polystyrene nanoparticles to caco-2 monolayers mimics particle uptake. Pharm Res 2002; 19:595-601. [PMID: 12069160 DOI: 10.1023/a:1015393710253] [Citation(s) in RCA: 85] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
PURPOSE The objective of this study was to evaluate nanoparticle uptake by the Caco-2 monolayer model in vitro. Special emphasis was placed on the localization and the quantification of the uptake of fluorescently labeled polystyrene and poly(lactic-co-glycolic acid) (PLGA) nanoparticles. METHODS Intracellular fluorescence was localized by fluorescence and confocal laser scanning microscopy. Particle uptake was quantified either directly, by counting internalized nanoparticles after separation from the Caco-2 monolayers, or indirectly, by extraction of the lipophilic fluorescence marker. In vitro release studies of lipophilic markers from nanoparticles were performed in standard buffer systems and buffer systems supplemented with liposomes. RESULTS Instead of uptake of polystyrene and PLGA nanoparticles by Caco-2 monolayers an efficient transfer of lipophilic fluorescence markers from nanoparticles into Caco-2 cells with subsequent staining of intracellular lipophilic compartments was observed. Whereas in standard buffer no release of fluorescent marker from polystyrene and PLGA nanoparticles was observed, the release studies using liposome dispersions as receiver revealed an efficient transfer of fluorescent marker into the liposome dispersion. CONCLUSIONS The results suggest that the deceptive particle uptake is caused by a collision-induced process facilitating the transfer of lipophilic fluorescent marker by formation of a complex between the nanoparticles and the biomembranes. Diffusion of the marker within this complex into lipophilic compartments of the cell strongly affects quantitative evaluation of particle uptake.
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Pietzonka P, Walter E, Duda-Johner S, Langguth P, Merkle HP. Compromised integrity of excised porcine intestinal epithelium obtained from the abattoir affects the outcome of in vitro particle uptake studies. Eur J Pharm Sci 2002; 15:39-47. [PMID: 11803130 DOI: 10.1016/s0928-0987(01)00203-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Excised porcine intestinal tissue obtained from the local abattoir was studied for its suitability to examine the uptake and transport of poly(lactic-co-glycolic acid) (PLGA) nanoparticles in Peyer's (PP) and non-Peyer's patch (NPP) tissue in vitro. Incubation of such tissue with fluorescent PLGA and polystyrene particles revealed negligible uptake into the intercellular space with no noticeable difference between PP and NPP tissue. Similarly, yeast cells, which were used as a positive control for selective uptake into PP tissue, were found in the subepithelial area of both PP and NPP tissue. Therefore we examined the morphological integrity of the tissue for the duration of the experiments. For this purpose, excised intestinal tissue from the abattoir transported to the laboratory was examined for morphological changes by light microscopy and compared to intestinal tissue from freshly slaughtered piglets. Already after 25 min postmortem, we observed lysis and defoliation of the epithelial cell layer followed by a complete loss of villus architecture and, consequently, resulting in a complete loss of the integrity of the intestinal tissue. This may explain the limited and non-selective particle uptake when using excised intestinal tissue from the abattoir. It is suggested to avoid small intestine obtained from the abattoir and to use tissue from freshly sacrificed animals within a few minutes postmortem. Experiments should then be performed under adequate oxygenation of the excised intestinal tissue.
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Affiliation(s)
- Peter Pietzonka
- Institute of Pharmaceutical Sciences, ETH Zurich, Winterthurerstrasse 190, CH-8057 Zurich, Switzerland
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Janes KA, Fresneau MP, Marazuela A, Fabra A, Alonso MJ. Chitosan nanoparticles as delivery systems for doxorubicin. J Control Release 2001; 73:255-67. [PMID: 11516503 DOI: 10.1016/s0168-3659(01)00294-2] [Citation(s) in RCA: 454] [Impact Index Per Article: 19.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The aim of this paper was to evaluate the potential of chitosan nanoparticles as carriers for the anthracycline drug, doxorubicin (DOX). The challenge was to entrap a cationic, hydrophilic molecule into nanoparticles formed by ionic gelation of the positively charged polysaccharide chitosan. To achieve this objective, we attempted to mask the positive charge of DOX by complexing it with the polyanion, dextran sulfate. This modification doubled DOX encapsulation efficiency relative to controls and enabled real loadings up to 4.0 wt.% DOX. Separately, we investigated the possibility of forming a complex between chitosan and DOX prior to the formation of the particles. Despite the low complexation efficiency, no dissociation of the complex was observed upon formation of the nanoparticles. Fluorimetric analysis of the drug released in vitro showed an initial release phase, the intensity of which was dependent on the association mode, followed by a very slow release. The evaluation of the activity of DOX-loaded nanoparticles in cell cultures indicated that those containing dextran sulfate were able to maintain cytostatic activity relative to free DOX, while DOX complexed to chitosan before nanoparticle formation showed slightly decreased activity. Additionally, confocal studies showed that DOX was not released in the cell culture medium but entered the cells while remaining associated to the nanoparticles. In conclusion, these preliminary studies showed the feasibility of chitosan nanoparticles to entrap the basic drug DOX and to deliver it into the cells in its active form.
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Affiliation(s)
- K A Janes
- Department of Pharmacy and Pharmaceutical Technology, School of Pharmacy, The University of Santiago de Compostela, 15706, Santiago de Compostela, Spain
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