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ElNashar NT, Breitinger U, Breitinger HG, Mansour S, Tammam SN. A liposomal platform for the delivery of ion channel proteins for treatment of channelopathies - Application in therapy of cystic fibrosis. Int J Biol Macromol 2023; 253:126652. [PMID: 37673169 DOI: 10.1016/j.ijbiomac.2023.126652] [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: 05/14/2023] [Revised: 08/21/2023] [Accepted: 08/30/2023] [Indexed: 09/08/2023]
Abstract
Channelopathies arise from ion channel dysfunction. Successful treatment entails delivery of functional ion channels to replace dysfunctional ones. Glycine receptor (GlyR)-rich cell membrane fragments (CMF) were previously delivered to target cell membranes using fusogenic liposomes. Here, cystic fibrosis transmembrane conductance regulator (CFTR)-bearing CMF were similarly delivered to target cells. We studied the effect of lipid composition on liposomes' ability to incorporate CMF and fuse with target cell membranes to deliver functional CFTR. Four formulations were prepared using thin-film hydration out of different lecithin sources, egg and soy lecithin (EL and SL), in the presence and absence of cholesterol (CHOL): EL + CHOL, EL-CHOL, SL + CHOL, and SL-CHOL. EL liposomes incorporated more CMF than SL liposomes, with CHOL only increasing CMF incorporation in SL liposomes. SL + CHOL fused better with target cell membranes than EL + CHOL. SL + CHOL and EL + CHOL equally delivered CFTR to target cell membranes, owing to the former's superior fusogenic capacity and the latter's superior CMF-incorporation capacity. SL-CHOL and EL-CHOL delivered CFTR to a lesser extent, indicating the importance of CHOL for fusion. Patch-clamp electrophysiology and confocal laser scanning microscopy (CLSM) confirmed CFTR delivery to target cell membranes by SL + CHOL. Therefore, CMF-bearing fusogenic liposomes offer a promising universal platform for the treatment of channelopathies.
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Affiliation(s)
- Noha T ElNashar
- Department of Pharmaceutical Technology, The German University in Cairo (GUC), Cairo, Egypt
| | - Ulrike Breitinger
- Department of Biochemistry, The German University in Cairo (GUC), Cairo, Egypt
| | | | - Samar Mansour
- Department of Pharmaceutical Technology, The German University in Cairo (GUC), Cairo, Egypt
| | - Salma N Tammam
- Department of Pharmaceutical Technology, The German University in Cairo (GUC), Cairo, Egypt.
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Giordani S, Marassi V, Zattoni A, Roda B, Reschiglian P. Liposomes characterization for market approval as pharmaceutical products: Analytical methods, guidelines and standardized protocols. J Pharm Biomed Anal 2023; 236:115751. [PMID: 37778202 DOI: 10.1016/j.jpba.2023.115751] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/13/2023] [Accepted: 09/24/2023] [Indexed: 10/03/2023]
Abstract
Liposomes are nano-sized lipid-based vesicles widely studied for their drug delivery capabilities. Compared to standard carries they exhibit better properties such as improved site-targeting and drug release, protection of drugs from degradation and clearance, and lower toxic side effects. At present, scientific literature is rich of studies regarding liposomes-based systems, while 14 types of liposomal products have been authorized to the market by EMA and FDA and many others have been approved by national agencies. Although the interest in nanodevices and nanomedicine has steadily increased in the last two decades the development of documentation regulating and standardizing all the phases of their development and quality control still suffers from major inadequacy due to the intrinsic complexity of nano-systems characterization. Many generic documents (Type 1) discussing guidelines for the study of nano-systems (lipidic and not) have been proposed while there is a lack of robust and standardized methods (Type 2 documents). As a result, a widespread of different techniques, approaches and methodologies are being used, generating results of variable quality and hard to compare with each other. Additionally, such documents are often subject to updates and rewriting further complicating the topic. Within this context the aim of this work is focused on bridging the gap in liposome characterization: the most recent standardized methodologies suitable for liposomes characterization are here reported (with the corresponding Type 2 documents) and revised in a short and pragmatical way focused on providing the reader with a practical background of the state of the art. In particular, this paper will put the accent on the methodologies developed to evaluate the main critical quality attributes (CQAs) necessary for liposomes market approval.
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Affiliation(s)
- Stefano Giordani
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy
| | - Valentina Marassi
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy.
| | - Andrea Zattoni
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy
| | - Barbara Roda
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy.
| | - Pierluigi Reschiglian
- Department of Chemistry "Giacomo Ciamician", University of Bologna, 40126 Bologna, Italy; byFlow srl, 40129 Bologna, Italy
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Synthesis, surface properties, aggregation behavior of oleyl ether sulfates and their application to liquid crystal emulsion. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Mura P, Maestrelli F, Cirri M, Nerli G, Di Cesare Mannelli L, Ghelardini C, Mennini N. Improvement of Butamben Anesthetic Efficacy by the Development of Deformable Liposomes Bearing the Drug as Cyclodextrin Complex. Pharmaceutics 2021; 13:pharmaceutics13060872. [PMID: 34204807 PMCID: PMC8231615 DOI: 10.3390/pharmaceutics13060872] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 06/07/2021] [Accepted: 06/09/2021] [Indexed: 12/13/2022] Open
Abstract
This work was aimed at enhancing butamben (BTB) anesthetic efficacy by the "drug-in cyclodextrin (CD)-in deformable liposomes" strategy. In the study, phase-solubility studies with natural (α-, β-, γ-) and derivative (hydroxypropyl-α-and β-, sulfobutylether-β, methyl-β) CDs evidenced the highest BTB affinity for βCD and its derivatives and indicated methyl-βCD (RAMEB) as the best carrier. Drug-RAMEB complexes were prepared by different techniques and were characterized for solid-state and dissolution properties. The best BTB-RAMEB product was chosen for entrapment in the aqueous core of deformable liposomes containing stearylamine, either alone or with sodium cholate, as edge activators. Double-loaded (DL) liposomes, bearing the lipophilic drug (0.5% w/v) in the bilayer and its hydrophilic RAMEB complex (0.5% w/v) in the aqueous core, were compared to single-loaded (SL) liposomes bearing 1% w/v plain drug in the bilayer. All vesicles showed homogeneous dimensions (i.e., below 300 nm), high deformability, and excellent entrapment efficiency. DL-liposomes were more effective than SL ones in limiting drug leakage (<5% vs. >10% after a 3 months storage at 4 °C). In vivo experiments in rabbits proved that all liposomal formulations significantly (p < 0.05) increased the intensity and duration of drug anesthetic action compared to its hydroalcoholic solution; however, DL liposomes were significantly (p < 0.05) more effective than SL ones in prolonging BTB anesthetic effect, owing to the presence of the drug-RAMEB complex in the vesicle core, acting as a reservoir. DL liposomes containing both edge activators were found to have the best performance.
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Affiliation(s)
- Paola Mura
- Department of Chemistry, University of Florence, via Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (P.M.); (F.M.); (M.C.); (G.N.)
| | - Francesca Maestrelli
- Department of Chemistry, University of Florence, via Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (P.M.); (F.M.); (M.C.); (G.N.)
| | - Marzia Cirri
- Department of Chemistry, University of Florence, via Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (P.M.); (F.M.); (M.C.); (G.N.)
| | - Giulia Nerli
- Department of Chemistry, University of Florence, via Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (P.M.); (F.M.); (M.C.); (G.N.)
| | - Lorenzo Di Cesare Mannelli
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy; (L.D.C.M.); (C.G.)
| | - Carla Ghelardini
- Department of Neuroscience, Psychology, Drug Research and Child Health (NEUROFARBA), Pharmacology and Toxicology Section, University of Florence, 50139 Florence, Italy; (L.D.C.M.); (C.G.)
| | - Natascia Mennini
- Department of Chemistry, University of Florence, via Schiff 6, Sesto Fiorentino, 50019 Florence, Italy; (P.M.); (F.M.); (M.C.); (G.N.)
- Correspondence: ; Tel.: +39-055-4573710
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Datta B, Paul D, Pal U, Rakshit T. Intriguing Biomedical Applications of Synthetic and Natural Cell-Derived Vesicles: A Comparative Overview. ACS APPLIED BIO MATERIALS 2021; 4:2863-2885. [PMID: 35014382 DOI: 10.1021/acsabm.0c01480] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The significant role of a vesicle is well recognized; however, only lately has the advancement in biomedical applications started to uncover their usefulness. Although the concept of vesicles originates from cell biology, it later transferred to chemistry and material science to develop nanoscale artificial vesicles for biomedical applications. Herein, we examine different synthetic and biological vesicles and their applications in the biomedical field in general. As our understanding of biological vesicles increases, more suitable biomimicking synthetic vesicles will be developed. The comparative discussion between synthetic and natural vesicles for biomedical applications is a relevant topic, and we envision this could enable the development of a proper approach to realize the next-generation treatment goals.
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Affiliation(s)
- Brateen Datta
- Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake City, Kolkata 700106, India
| | - Debashish Paul
- Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake City, Kolkata 700106, India
| | - Uttam Pal
- Technical Research Centre, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake City, Kolkata 700106, India
| | - Tatini Rakshit
- Department of Chemical, Biological & Macromolecular Sciences, S. N. Bose National Centre for Basic Sciences, Block-JD, Sector-III, Salt Lake City, Kolkata 700106, India
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Kassem AA, Abd El-Alim SH. Vesicular Nanocarriers: A Potential Platform for Dermal and Transdermal Drug Delivery. NANOPHARMACEUTICALS: PRINCIPLES AND APPLICATIONS VOL. 2 2021. [DOI: 10.1007/978-3-030-44921-6_5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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Fan Y, Marioli M, Zhang K. Analytical characterization of liposomes and other lipid nanoparticles for drug delivery. J Pharm Biomed Anal 2020; 192:113642. [PMID: 33011580 DOI: 10.1016/j.jpba.2020.113642] [Citation(s) in RCA: 128] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/11/2020] [Accepted: 09/13/2020] [Indexed: 12/14/2022]
Abstract
Lipid nanoparticles, especially liposomes and lipid/nucleic acid complexed nanoparticles have shown great success in the pharmaceutical industry. Their success is attributed to stable drug loading, extended pharmacokinetics, reduced off-target side effects, and enhanced delivery efficiency to disease targets with formidable blood-brain or plasma membrane barriers. Therefore, they offer promising formulation options for drugs limited by low therapeutic indexes in traditional dosage forms and current "undruggable" targets. Recent development of siRNA, antisense oligonucleotide, or the CRISPR complex-loaded lipid nanoparticles and liposomal vaccines also shed light on their potential in enabling versatile formulation platforms for new pharmaceutical modalities. Analytical characterization of these nanoparticles is critical to drug design, formulation development, understanding in vivo performance, as well as quality control. The multi-lipid excipients, unique core-bilayer structure, and nanoscale size all underscore their complicated critical quality attributes, including lipid species, drug encapsulation efficiency, nanoparticle characteristics, product stability, and drug release. To address these challenges and facilitate future applications of lipid nanoparticles in drug development, we summarize available analytical approaches for physicochemical characterizations of lipid nanoparticle-based pharmaceutical modalities. Furthermore, we compare advantages and challenges of different techniques, and highlight the promise of new strategies for automated high-throughput screening and future development.
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Affiliation(s)
- Yuchen Fan
- Research and Early Development, Genentech Inc., 1 DNA Way, South San Francisco, CA, 94080, USA
| | - Maria Marioli
- Pharma Technical Development Europe Analytics, F. Hoffmann-La Roche Ltd, Grenzacherstrasse 124, 4070, Basel, Switzerland
| | - Kelly Zhang
- Research and Early Development, Genentech Inc., 1 DNA Way, South San Francisco, CA, 94080, USA.
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Abstract
When antibiotics are administered, orally or intravenously, they pass through different organs and layers of tissue on their way to the site of infection; this can cause dilution and/or intoxication. To overcome these problems, drug delivery vehicles have been used to encapsulate and deliver antibiotics, improving their therapeutic index while minimizing their adverse effects. Liposomes are self-assembled lipid vesicles made from at least one bilayer of phospholipids with an inner aqueous compartment. Liposomes are attractive vehicles to deliver antibiotics because they can encapsulate both hydrophobic and hydrophilic antibiotics, they have low toxicity, and they can change the biodistribution of the drug. Furthermore, liposomes have been approved by regulatory agencies. However, most developmental and mechanistic research in the field has been focused on encapsulation and delivery of anticancer drugs, a class of molecules that differ significantly in chemistry from antibiotics. In this critical Review, we discuss the state of knowledge regarding the design of liposomes for encapsulation and delivery of antibiotics and offer insight into the challenges and promises of using liposomes for antibiotic delivery.
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Affiliation(s)
- Azucena Gonzalez Gomez
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario L9S 8L7, Canada
| | - Zeinab Hosseinidoust
- Department of Chemical Engineering, McMaster University, Hamilton, Ontario L9S 8L7, Canada
- Michael DeGroote Institute for Infectious Disease Research, McMaster University, Hamilton, Ontario L98 4LS, Canada
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Dispersibility of phospholipids and their optimization for the efficient production of liposomes using supercritical fluid technology. Int J Pharm 2019; 563:174-183. [PMID: 30940503 DOI: 10.1016/j.ijpharm.2019.03.053] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2019] [Revised: 03/23/2019] [Accepted: 03/25/2019] [Indexed: 01/16/2023]
Abstract
Liposomes are promising delivery vehicles and offer the added drawcard of being able to be made functional to target tissues such as cardiac muscle and cancerous cells. Current methods to manufacture liposomes need to be improved and supercritical fluid (SCF) technologies may offer a solution. Herein, the dispersibility of six different phospholipids (PLs) was determined in supercritical carbon dioxide (scCO2). 1,2-distearoyl-sn-glycero-3-phosphocholine (DSPC) showed the highest post-processing dispersibility, while 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), 1,2-dioleoyl-sn-glycero-3-phosphoethanolamine (DOPE), and 1,2-dioleoyl-3-trimethylammonium-propane (DOTAP) showed no dispersibility in scCO2 at the assessed experimental conditions. The zetasizer results showed that the SCF conditions at 37 °C, 250 bar and 200 RPM for 60 min provided nanoparticles with the narrowest polydispersity index (PDI) and a spherical shape as shown by cryo-transmission electron microscopy (Cryo-TEM). The mean diameter of liposomes using the SCF method for DSPC-PEGylated and DOPC-PEGylated liposomes was 98.3 ± 3.3 nm and 124.5 ± 4.1 nm, while using the thin film method it was 153.6 ± 4.5 nm and 131.3 ± 3.4 nm, respectively. A size-based stability evaluation of the scCO2-prepared liposomes stored at different temperatures (25 °C, 4 °C and -20 °C) was compared to that of the thin film method over a period of 3 months. The current study provides a possible green alternative SCF method to preparing liposomes that is less laborious, time saving, and a low energy process.
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Maqbool F, Moyle PM, Tan MSA, Thurecht KJ, Falconer JR. Preparation of albendazole-loaded liposomes by supercritical carbon dioxide processing. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 46:S1186-S1192. [PMID: 30688100 DOI: 10.1080/21691401.2018.1536059] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Supercritical fluid (SCF) technology offers a potential green alternative to organic solvent-based methods for drug formulation. Albendazole (ABZ) has promising anticancer activity when formulated to increase its cellular uptake. Herein, a static volume method was used to determine the solubility of ABZ in supercritical carbon dioxide (scCO2) for the future development of such ABZ formulations. The solubility of ABZ in scCO2 (250 bar, 37 °C) was approximately 12 mg/100 mL. The extent of dissolution was measured at various time points to determine when saturation solubility occurred, which was demonstrated from 9 h. In order to determine if scCO2 processing induced ABZ polymorphism, DSC/TGA, FTIR and XRD were used, which demonstrated no change in its solid state. Following this, ABZ loaded liposomes were manufactured using SCF technology. The liposomes diameter was 167.2 ± 5.3 nm as determined by Zetasizer, and confirmed by cryo-transmission electron microscopy. In conclusion, scCO2 was used successfully to solubilize ABZ, and to manufacture liposomes of nano-sized range. This study provides insight into use of green technology for future ABZ liposomal formulation without the need for organic solvents.
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Affiliation(s)
- Faheem Maqbool
- a School of Pharmacy , The University of Queensland , Woolloongabba , Australia
| | - Peter M Moyle
- a School of Pharmacy , The University of Queensland , Woolloongabba , Australia
| | - Madeleine S A Tan
- a School of Pharmacy , The University of Queensland , Woolloongabba , Australia
| | - Kristofer J Thurecht
- b The Centre for Advanced Imaging (CAI) , The University of Queensland , Brisbane , Australia
| | - James R Falconer
- a School of Pharmacy , The University of Queensland , Woolloongabba , Australia
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12
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Bunker A, Magarkar A, Viitala T. Rational design of liposomal drug delivery systems, a review: Combined experimental and computational studies of lipid membranes, liposomes and their PEGylation. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2016; 1858:2334-2352. [DOI: 10.1016/j.bbamem.2016.02.025] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Revised: 02/09/2016] [Accepted: 02/10/2016] [Indexed: 01/22/2023]
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Affiliation(s)
- Bhushan S Pattni
- Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University , Boston, Massachusetts 02115, United States
| | - Vladimir V Chupin
- Laboratory for Advanced Studies of Membrane Proteins, Moscow Institute of Physics and Technology , Dolgoprudny 141700, Russia
| | - Vladimir P Torchilin
- Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology and Nanomedicine, Northeastern University , Boston, Massachusetts 02115, United States.,Department of Biochemistry, Faculty of Science, King Abdulaziz University , Jeddah 21589, Saudi Arabia
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Cutrignelli A, Lopedota A, Denora N, Laquintana V, Tongiani S, Franco M. Characterization and release studies of liposomal gels containing glutathione/cyclodextrins complexes potentially useful for cutaneous administration. J Pharm Sci 2014; 103:1246-54. [PMID: 24532133 DOI: 10.1002/jps.23900] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Revised: 01/20/2014] [Accepted: 01/24/2014] [Indexed: 11/07/2022]
Abstract
The aim of this work is to develop and characterize a formulation intended for the cutaneous administration of glutathione (γ-glutamylcysteinylglycine, GSH), potentially useful for cellular defense against UV-induced damage. For this purpose, liposomes containing GSH or GSH/cyclodextrins(CDs) inclusion complexes as well as liposomes dispersed within a hydrophilic gel, were evaluated. These formulations were designed in order to obtain a system combining the advantages of liposomes as vehicles for topical drug delivery with those of CDs as penetration enhancers. The studied CDs were the natural (β-CD) and chemically modified (i.e., HP-β-CD and CH3 -β-CD) cyclodextrins. The prepared liposomes showed homogeneous size distribution, mean diameter in the range 622-1435 nm, small positive charge (+3.1 to +6.6 mV), and encapsulation efficiency of the peptide in the range 13.6%-23.7%. Release studies showed that the presence of the oligosaccharide may influence to some extent the amount of drug released, whereas stability studies clearly point out that the incorporation in a hydrophilic gel of 2-hydroxyethylcellulose insures a stable formulation maintaining unchanged the characteristics of liposomal vesicles.
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Affiliation(s)
- Annalisa Cutrignelli
- Department of Pharmacy & Pharmaceutical Sciences, University of Bari "Aldo Moro", Bari, Italy
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Caddeo C, Sales OD, Valenti D, Saurí AR, Fadda AM, Manconi M. Inhibition of skin inflammation in mice by diclofenac in vesicular carriers: Liposomes, ethosomes and PEVs. Int J Pharm 2013; 443:128-36. [DOI: 10.1016/j.ijpharm.2012.12.041] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Revised: 12/24/2012] [Accepted: 12/29/2012] [Indexed: 11/24/2022]
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Exposure to silver nanoparticles induces oxidative stress and memory deficits in laboratory rats. Open Life Sci 2011. [DOI: 10.2478/s11535-011-0022-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractCurrently most of the applications of silver nanoparticles are in antibacterial/antifungal agents in medicine and biotechnology, textile engineering, water treatment and silver-based consumer products. However, the effects of silver nanoparticles on human body, especially on the central nervous system, are still unclear. To study the mechanisms underlying the effects of silverpoly(amidehydroxyurethane) coated silver nanoparticles on brain functions, we subjected male Wistar rats to chronic treatments with silver-29 nm (5 µg/kg and 10 µg/kg) and silver-23 nm (5 µg/kg and 10 µg/kg) nanoparticles for 7 days. We evaluated the effects of nanoparticles size and structure on rat memory function. Memory processes were studied by means of two cognitive tasks (Y-maze and radial arm-maze). Exposure to silver nanoparticles significantly decreased spontaneous alternation in the Y-maze task and working memory functions in the radial arm-maze task, suggesting that nanoparticles have effects on short-term memory. We found no effects on long-term memory, which we assessed by reference memory trials in the radial arm-maze task. We found that memory deficits were significantly correlated with oxidative stress generation only in the Y-maze task. Our findings suggest that silver nanoparticles may induce an impairment of memory functions by increasing oxidative stress in the brain. The use of silver nanoparticles for medical purposes therefore requires careful consideration, particularlyif it involves exposure of the human brain.
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Amsalem O, Aserin A, Garti N. Phospholipids-embedded fully dilutable liquid nanostructures. Part 2: The role of sodium diclofenac. Colloids Surf B Biointerfaces 2010; 81:422-9. [DOI: 10.1016/j.colsurfb.2010.07.032] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2010] [Revised: 07/12/2010] [Accepted: 07/15/2010] [Indexed: 10/19/2022]
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High-Dose Bupivacaine Remotely Loaded into Multivesicular Liposomes Demonstrates Slow Drug Release Without Systemic Toxic Plasma Concentrations After Subcutaneous Administration in Humans. Anesth Analg 2010; 110:1018-23. [DOI: 10.1213/ane.0b013e3181d26d2a] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Patel G, Chougule M, Singh M, Misra A. Chapter 9 - Nanoliposomal dry powder formulations. Methods Enzymol 2009; 464:167-91. [PMID: 19903555 DOI: 10.1016/s0076-6879(09)64009-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Liposomal dry powder formulations (DPFs) have proven their superiority over conventional DPFs due to favorably improved pharmacokinetics and pharmacodynamics of entrapped drugs, and thus, reduced local and systemic toxicities. Nanoliposomal DPFs (NLDPFs) provide stable, high aerosolization efficiency to deep lung, prolonged drug release, slow systemic dilution, and avoid macrophage uptake of encapsulated drug by carrier-based delivery of nano-range liposomes. This chapter describes methods of preparation of nanoliposomes (NLs) and NLDPFs, using various techniques, and their characterization with respect to size distribution, flow behavior, in vitro drug release profile, lung deposition, cellular uptake and cytotoxicity, and in vivo pharmacokinetics and pharmacodynamics. Some examples have been detailed for better understanding of the methods of preparation and evaluation of NLDPFs by investigators.
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Affiliation(s)
- Gaurang Patel
- TIFAC-CORE in NDDS, Pharmacy Department, Faculty of Technology and Engineering, The Maharaja Sayajirao University of Baroda, Kalabhavan, Vadodara, Gujarat, India
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Carlson C, Hussain SM, Schrand AM, K. Braydich-Stolle L, Hess KL, Jones RL, Schlager JJ. Unique Cellular Interaction of Silver Nanoparticles: Size-Dependent Generation of Reactive Oxygen Species. J Phys Chem B 2008; 112:13608-19. [DOI: 10.1021/jp712087m] [Citation(s) in RCA: 1316] [Impact Index Per Article: 82.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- C. Carlson
- Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433
| | - S. M. Hussain
- Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433
| | - A. M. Schrand
- Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433
| | - L. K. Braydich-Stolle
- Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433
| | - K. L. Hess
- Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433
| | - R. L. Jones
- Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433
| | - J. J. Schlager
- Applied Biotechnology Branch, Human Effectiveness Directorate, and Science Applications International Corporation, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, Ohio 45433
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Literature alerts. J Microencapsul 2005; 21:687-94. [PMID: 15762324 DOI: 10.1080/02652040412331343791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Gómez-Hens A, Manuel Fernández-Romero J. The role of liposomes in analytical processes. Trends Analyt Chem 2005. [DOI: 10.1016/j.trac.2004.07.017] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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