101
|
Bang S, Hwang I, Yu Y, Kwon H, Kim D, Park H. Influence of chitosan coating on the liposomal surface on physicochemical properties and the release profile of nanocarrier systems. J Microencapsul 2011; 28:595-604. [DOI: 10.3109/02652048.2011.557748] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- S.H. Bang
- School of Life Sciences and Biotechnology, Korea University,
Seoul, South Korea
| | - I.C. Hwang
- Central Research Institute, Kyung Nong Co. Ltd.,
Kyungju, South Korea
| | - Y.M. Yu
- Department of Applied Biology, College of Agriculture True and Life Sciences, Chungnam National University,
Daejeon, South Korea
| | - H.R. Kwon
- Department of Applied Biology, College of Agriculture True and Life Sciences, Chungnam National University,
Daejeon, South Korea
| | - D.H. Kim
- Korea Packaging Center, Korea Institute of Industrial Technology,
Ansan, South Korea
| | - H.J. Park
- School of Life Sciences and Biotechnology, Korea University,
Seoul, South Korea
| |
Collapse
|
102
|
Behera T, Swain P, Sahoo S. Antigen in chitosan coated liposomes enhances immune responses through parenteral immunization. Int Immunopharmacol 2011; 11:907-14. [DOI: 10.1016/j.intimp.2011.02.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Revised: 01/22/2011] [Accepted: 02/01/2011] [Indexed: 11/30/2022]
|
103
|
Chu C, Tong SS, Xu Y, Wang L, Fu M, Ge YR, Yu JN, Xu XM. Proliposomes for oral delivery of dehydrosilymarin: preparation and evaluation in vitro and in vivo. Acta Pharmacol Sin 2011; 32:973-80. [PMID: 21666703 PMCID: PMC4003120 DOI: 10.1038/aps.2011.25] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2010] [Accepted: 03/01/2011] [Indexed: 11/09/2022] Open
Abstract
AIM To formulate proliposomes with a polyphase dispersed system composed of soybean phospholipids, cholesterol, isopropyl myristate and sodium cholate to improve the oral bioavailability of dehydrosilymarin, an oxidized form of herbal drug silymarin. METHODS Dehydrosilymarin was synthesized from air oxidation of silymarin in the presence of pyridine, and proliposomes were prepared by a film dispersion-freeze drying method. Morphological characterization of proliposomes was observed using a transmission electron microscope. Particle size and encapsulation efficiency of proliposomes were measured. The in vitro release of dehydrosilymarin from suspension and proliposomes was evaluated. The oral bioavailability of dehydrosilymarin suspension and proliposomes was investigated in rabbits. RESULTS The proliposomes prepared under the optimum conditions were spherical and smooth with a mean particle size in the range of 7 to 50 nm. Encapsulation efficiency was 81.59%±0.24%. The in vitro accumulative release percent of dehydrosilymarinloaded proliposomes was stable, which was slow in pH 1.2, and increased continuously in pH 6.8, and finally reached 86.41% at 12 h. After oral administration in rabbits, the relative bioavailability of proliposomes versus suspension in rabbits was 228.85%. CONCLUSION Proliposomes may be a useful vehicle for oral delivery of dehydrosilymarin, a drug poorly soluble in water.
Collapse
Affiliation(s)
- Chang Chu
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| | - Shan-shan Tong
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| | - Ying Xu
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| | - Li Wang
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| | - Min Fu
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| | - Yan-ru Ge
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| | - Jiang-nan Yu
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| | - Xi-ming Xu
- Department of Pharmaceutics, School of Pharmacy, Jiangsu University, Zhenjiang 212013, China
| |
Collapse
|
104
|
González-Rodríguez ML, Rabasco AM. Charged liposomes as carriers to enhance the permeation through the skin. Expert Opin Drug Deliv 2011; 8:857-71. [DOI: 10.1517/17425247.2011.574610] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
105
|
Ito Y, Murano H, Hamasaki N, Fukushima K, Takada K. Incidence of low bioavailability of leuprolide acetate after percutaneous administration to rats by dissolving microneedles. Int J Pharm 2011; 407:126-31. [DOI: 10.1016/j.ijpharm.2011.01.039] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2010] [Revised: 01/19/2011] [Accepted: 01/21/2011] [Indexed: 11/28/2022]
|
106
|
Channarong S, Chaicumpa W, Sinchaipanid N, Mitrevej A. Development and evaluation of chitosan-coated liposomes for oral DNA vaccine: the improvement of Peyer's patch targeting using a polyplex-loaded liposomes. AAPS PharmSciTech 2011; 12:192-200. [PMID: 21194014 DOI: 10.1208/s12249-010-9559-9] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2010] [Accepted: 11/30/2010] [Indexed: 11/30/2022] Open
Abstract
The aim of this study was to develop chitosan-coated and polyplex-loaded liposomes (PLLs) containing DNA vaccine for Peyer's patch targeting. Plain liposomes carrying plasmid pRc/CMV-HBs were prepared by the reverse-phase evaporation method. Chitosan coating was carried out by incubation of the liposomal suspensions with chitosan solution. Main lipid components of liposomes were phosphatidylcholine/cholesterol. Sodium deoxycholate and dicetyl phosphate were used as negative charge inducers. The zeta potentials of plain liposomes were strongly affected by the pH of the medium. Coating with chitosan variably increased the surface charges of the liposomes. To increase the zeta potential and stability of the liposome, chitosan was also used as a DNA condensing agent to form a polyplex. The PLLs were coated with chitosan solution. In vivo study of PLLs was carried out in comparison with chitosan-coated liposomes using plasmid encoding green fluorescence protein as a reporter. A single dose of plasmid equal to 100 μg was intragastrically inoculated into BALB/c mice. The expression of green fluorescence protein (GFP) was detected after 24 h using a confocal laser scanning microscope. The signal of GFP was obtained from positively charged chitosan-coated liposomes but found only at the upper part of duodenum. With chitosan-coated PLL540, the signal of GFP was found throughout the intestine. Chitosan-coated PLL demonstrated a higher potential to deliver the DNA to the distal intestine than the chitosan-coated liposomes due to the increase in permanent positive surface charges and the decreased enzymatic degradation.
Collapse
|
107
|
Wang WX, Gao JQ, Liang WQ. Chitosan-coated liposomes for intracellular oligonucleotides delivery: characteristics and cell uptake behavior. Drug Deliv 2011; 18:208-14. [PMID: 21254940 DOI: 10.3109/10717544.2010.549526] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Surface modification of liposomes with polymer to optimize drug delivery was well developed recently. The objective of the present work was to evaluate the feasibility of chitosan-coated liposomes (CSLP) as vehicles for anti-sense oligodeoxynucleotides (ASON). CSLP was obtained by adding chitosan dropwise to liposomes under magnetic stirring. The effect of chitosan content on size, zeta potential, and coating efficiency was investigated, which showed that chitosan increased the size and zeta potential of CSLP, and the coating efficiency increased with chitosan content increasing. Agarose gel electrophoresis was employed to evaluate the loading efficiency of CSLP for ASON, from which one could see ASON was completely combined to CSLP when the mass ratio of total lipids:ASON was more than 50:1. MTT assay showed that CSLP took on very low cytotoxicity, which is much lower than chitosan. At last, cell uptake behavior was investigated by a flow cytometer, which showed that CSLP enhanced significantly the COS7 cells uptake of ASON. All the results indicated that the CSLP could be a promising non-viral ASON vehicle.
Collapse
Affiliation(s)
- Wen-Xi Wang
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, PR China
| | | | | |
Collapse
|
108
|
Priprem A, Chonpathompikunlert P, Sutthiparinyanont S, Wattanathorn J. Antidepressant and cognitive activities of intranasal piperine-encapsulated liposomes. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/abb.2011.22017] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
109
|
Karn PR, Vanić Z, Pepić I, Škalko-Basnet N. Mucoadhesive liposomal delivery systems: the choice of coating material. Drug Dev Ind Pharm 2010; 37:482-8. [DOI: 10.3109/03639045.2010.523425] [Citation(s) in RCA: 101] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
|
110
|
Madrigal-Carballo S, Vila AO, Sibaja M, Reed JD, Molina F. In vitro uptake of lysozyme-loaded liposomes coated with chitosan biopolymer as model immunoadjuvants. J Liposome Res 2010; 20:1-8. [PMID: 19514859 DOI: 10.3109/08982100903015009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Chitosan binds to negatively charged soy lecithin liposomes by an electrostatic interaction driven by its cationic amino group. This interaction allows developing stable coated vesicles suitable as a targeted carrier and controlled release system for drugs and vaccines. In this work, we studied the effect of chitosan-coated liposomes on the uptake and antigen presentation of hen egg-white lysozyme (HEL) in Peyer's patches peritoneal macrophages isolated from mice. Chitosan-coated liposomes were characterized according to size, zeta potential, and antigen-loading and release properties. Results showed an increase in the positive net charge and size of the liposomes as the concentration of chitosan was increased, suggesting an electrostatic interaction and an effective coating, followed by fluorescence microscopy. About 85% of the antigen loaded remained in the chitosan-coated liposomes after release studies for 4 hours in phosphate-buffered saline. After 4 hours of preincubation with a T-cell hybridoma line cocultured with murine peritoneal macrophages, only trace amounts of interleukin-2 (IL-2) were detected in the cocultures treated with HEL alone, whereas cocultures treated with HEL-liposomes had an important production of IL-2, and the HEL chitosan-coated liposomes had already reached maximum IL-2 expression. Confocal microscopy studies showed that chitosan-coated liposomes had a higher uptake rate of the fluorescently labeled HEL than uncoated liposomal vesicles after 30 minutes of incubation with the peritoneal macrophages. Since uptake by macrophage cells is the first step in vaccination, our results suggest that the chitosan-coated liposomal system is a potential candidate as an immunoadjuvant for vaccine delivery systems.
Collapse
|
111
|
Zhuang J, Ping Q, Song Y, Qi J, Cui Z. Effects of chitosan coating on physical properties and pharmacokinetic behavior of mitoxantrone liposomes. Int J Nanomedicine 2010; 5:407-16. [PMID: 20957162 PMCID: PMC2950398 DOI: 10.2147/ijn.s10189] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2010] [Indexed: 11/23/2022] Open
Abstract
The objective of this work was to evaluate the physical properties and in vivo circulation of chitosan (CH)-coated liposomes of mitoxantrone (MTO). Changes in particle size and zeta potential confirmed the existence of a coating layer on the surface of liposomes. The in vitro release of adsorbed CH from the liposomes was significantly slower than CH solution, indicating the stable interaction between CH and liposomes. The physical stability of the CH-coated liposomes was evaluated by measuring the change in particle size before and after freeze-drying and rehydration. The smallest change was observed when saturated adsorption of CH occurred (0.3%). The sustained release in vitro of MTO from CH-coated liposomes confirmed the increased stability of liposomes. Systemic circulation of CH-coated MTO liposomes was examined. The 0.3% CH-coated liposomes showed the longest circulation time. It could be concluded that the prolonged retention time of the liposomes was closely related with CH coating and its stability effect.
Collapse
Affiliation(s)
- Jie Zhuang
- School of Pharmacy, China, Pharmaceutical University, Nanjing, China
| | | | | | | | | |
Collapse
|
112
|
Tong-un. Effects of Quercetin Encapsulated Liposomes via Nasal Administration: A Novel Cognitive Enhancer. ACTA ACUST UNITED AC 2010. [DOI: 10.3844/ajassp.2010.906.913] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
113
|
|
114
|
Albasarah YY, Somavarapu S, Stapleton P, Taylor KM. Chitosan-coated antifungal formulations for nebulisation. J Pharm Pharmacol 2010. [DOI: 10.1211/jpp.62.07.0002] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
|
115
|
Wang Y, Tu S, Li R, Yang X, Liu L, Zhang Q. Cholesterol succinyl chitosan anchored liposomes: preparation, characterization, physical stability, and drug release behavior. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2010; 6:471-7. [DOI: 10.1016/j.nano.2009.09.005] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2009] [Revised: 09/15/2009] [Accepted: 09/16/2009] [Indexed: 11/25/2022]
|
116
|
Chon CR, Kim HM, Lee PS, Oh EC, Lee MS. Preparation and Stability Evaluation of Docetaxel-Loaded Oral Liposome. JOURNAL OF PHARMACEUTICAL INVESTIGATION 2010. [DOI: 10.4333/kps.2010.40.2.085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
117
|
Tong-un. Nasal Administration of Quercetin Liposomes Improves Memory Impairment and Neurodegeneration in Animal Model of Alzheimer's Disease. ACTA ACUST UNITED AC 2010. [DOI: 10.3844/ajabssp.2010.286.293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
118
|
Liang G, Jia-Bi Z, Fei X, Bin N. Preparation, characterization and pharmacokinetics of N-palmitoyl chitosan anchored docetaxel liposomes. J Pharm Pharmacol 2010; 59:661-7. [PMID: 17524231 DOI: 10.1211/jpp.59.5.0006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
Abstract
The objective of this work was to investigate the preparation, characterization and pharmacokinetics of N-palmitoyl chitosan anchored docetaxel liposomes. To decrease toxic effects and improve anti-tumour efficacy of the drug, docetaxel has been incorporated in liposomes; the formulation, stability and pharmacokinetics of plain docetaxel liposomes (PDLs), PEGylated docetaxel liposomes (PEGDLs) and N-palmitoyl chitosan anchored docetaxel liposomes (NDLs) were compared. NDL was more stable than PDL and PEGDL in-vitro, especially in the presence of serum at 37°C. The concentration of docetaxel in the plasma of rats after intravenous administration of docetaxel injection, PDL, PEGDL and NDL was studied by RP-HPLC. The pharmacokinetic behaviour of docetaxel injection, PDL, PEGDL and NDL were significantly different. These findings suggest that anchored liposomes could increase the stability of docetaxel in-vivo, as compared with plain liposomes, but the improvement was not more significant than PEGylated liposomes. N-Palmitoyl chitosan as a new polymeric membrane to anchor liposome was useful to stabilize liposomes containing anti-tumour drug.
Collapse
Affiliation(s)
- Ge Liang
- School of Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu, 210009, PR China.
| | | | | | | |
Collapse
|
119
|
Witoonsaridsilp W, Panyarachun B, Sarisuta N, Müller-Goymann CC. Influence of microenvironment and liposomal formulation on secondary structure and bilayer interaction of lysozyme. Colloids Surf B Biointerfaces 2010; 75:501-9. [DOI: 10.1016/j.colsurfb.2009.09.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2009] [Revised: 09/04/2009] [Accepted: 09/22/2009] [Indexed: 10/20/2022]
|
120
|
Mehanna MM, Elmaradny HA, Samaha MW. Mucoadhesive liposomes as ocular delivery system: physical, microbiological, and in vivo assessment. Drug Dev Ind Pharm 2010; 36:108-18. [DOI: 10.3109/03639040903099751] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
121
|
Abdelbary G. Ocular ciprofloxacin hydrochloride mucoadhesive chitosan-coated liposomes. Pharm Dev Technol 2009; 16:44-56. [PMID: 20025433 DOI: 10.3109/10837450903479988] [Citation(s) in RCA: 106] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The aim of this work is to improve the ocular bioavailability of ciprofloxacin hydrochloride (CPX) through the preparation of ocular mucoadhesive chitosan (CS)-coated liposomes. Liposomes were prepared by the thin film hydration technique, using different molar ratios of L-α-phosphatidylcholine (PC), cholesterol (CH), stearylamine (SA) and dicetyl phosphate (DP). CS was used to coat the optimal liposomal formulae. The prepared formulae were characterized regarding encapsulation efficiency (%EE), particle size, physical morphology and in vitro drug release. The in vivo characterization of the prepared formulae was performed through evaluating the level of CPX in the external eye tissue of nine albino rabbits. Results showed an alteration in release rate and %EE of CPX from liposomal formulae upon varying the molar ratios of the lipid bilayer composition. The optimal liposomal formulae F1 (10:0, PC:CH), F12 (10:0:0.5, PC:CH:SA) and F15 (10:0:1, PC:CH:DP), showed % EE of 38.5 ± 2.10, 39.65 ± 1.85 and 30.05 ± 0.75 and % in vitro release after 8 hours (Q(8h)) of 78.15 ± 2.4, 54.07 ± 2.3 and 62.14 ± 2.9, respectively. In vitro drug release and in vivo results confirmed that CS-coated liposomal formulae have exhibited a higher retention of CPX. Consequently, CS-coated liposomes could be a promising approach to increase the ocular bioavailability of CPX.
Collapse
Affiliation(s)
- Ghada Abdelbary
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Cairo University, Cairo, Egypt.
| |
Collapse
|
122
|
Rinaudo M, Quemeneur F, Pépin-Donat B. Stabilization of Liposomes Against Stress Using Polyelectrolytes: Interaction Mechanisms, Influence of pH, Molecular Weight, and Polyelectrolyte Structure. INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION 2009. [DOI: 10.1080/10236660903289623] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
123
|
Fukui Y, Fujimoto K. The preparation of sugar polymer-coated nanocapsules by the layer-by-layer deposition on the liposome. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2009; 25:10020-10025. [PMID: 19705896 DOI: 10.1021/la9008834] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
We intended to combine the liposomal preparation and the layer-by-layer deposition to prepare a nanosized capsule. Chitosan (CHI) was deposited to form the cationic polymeric layer onto a negatively charged liposomal surface and further deposition was carried out using anionic polymers dextran sulfate (DXS) or deoxyribonucleic acid (DNA). zeta-Potentials of nanocapsules changed between positive and negative charges at each deposition. FE-TEM revealed that the liposome remained a spherical shape even after the layer-by-layer (LbL) deposition. The capsule wall showed a dramatic increase in stability against the surfactant Triton X-100 compared to a bare liposome, and the stability was controllable by the adsorption amount of the polymer. These suggest that the polymer multilayer was generated on the liposome surface by the layer-by-layer depositions of polysaccharides. The three kinds of chemical substances with different charges, 1-hydroxy pyrene-3,6,8-trisulfonic acid (HPTS), alendronate, and glucose, were encapsulated into nanocapsules and the release was suppressed by the polymeric capsule wall irrespective of charges. The release from DNA-deposited nanocapsules (liponano-CHI-DNA) was clearly increased by raising temperature from 25 to 60 degrees C. This indicates that the temperature-dependent release was achieved by applying DNA denaturation as a temperature-dependent "switch", which influenced the permeability of the capsule wall.
Collapse
Affiliation(s)
- Yuuka Fukui
- Center for Chemical Biology, School of Fundamental Science and Technology, Graduate School of Science and Technology, Keio University, Kohoku-ku, Yokohama, 223-8522, Japan
| | | |
Collapse
|
124
|
Li N, Zhuang C, Wang M, Sun X, Nie S, Pan W. Liposome coated with low molecular weight chitosan and its potential use in ocular drug delivery. Int J Pharm 2009; 379:131-8. [DOI: 10.1016/j.ijpharm.2009.06.020] [Citation(s) in RCA: 155] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2009] [Revised: 05/25/2009] [Accepted: 06/18/2009] [Indexed: 10/20/2022]
|
125
|
Madrigal-Carballo S, Rodríguez G, Sibaja M, Reed JD, Vila AO, Molina F. Chitosomes loaded with cranberry proanthocyanidins attenuate the bacterial lipopolysaccharide-induced expression of iNOS and COX-2 in raw 264.7 macrophages. J Liposome Res 2009; 19:189-96. [DOI: 10.1080/08982100902729436] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
126
|
Mady MM, Darwish MM, Khalil S, Khalil WM. Biophysical studies on chitosan-coated liposomes. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2009; 38:1127-33. [PMID: 19649627 DOI: 10.1007/s00249-009-0524-z] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2009] [Accepted: 07/13/2009] [Indexed: 01/05/2023]
Abstract
Liposomes have been used as delivery vehicles for stabilizing drugs, overcoming barriers to cellular and tissue uptake, and for directing their contents toward specific sites in vivo. Chitosan is a biological macromolecule derived from crustacean shells and has several emerging applications in drug development, obesity control, and tissue engineering. In the present work, the interaction between chitosan and dipalmitoyl phosphatidylcholine (DPPC) liposomes was studied by transmission electron microscopy (TEM), zeta potential, solubilization using the nonionic detergent octylglucoside (OG), as well as Fourier transform infrared (FTIR) spectroscopy and viscosity measurements. The coating of DPPC liposomes by a chitosan layer was confirmed by electron microscope images and the zeta potential of liposomes. Coating of liposome by chitosan resulted in an increase in liposomal size by addition of a layer of 92 +/- 27.1 nm. The liposomal zeta potential became increasingly positive as chitosan concentration increased from 0.1 to 0.3% w/v, then it held at a relatively constant value. The amount of detergent needed to completely solubilize the liposomal membrane was increased after coating of liposomes with chitosan, indicating an increased membrane resistance to the detergent and hence a change in the natural membrane permeation properties. In the analysis of FTIR spectra of DPPC, the symmetric and antisymmetric CH(2) (at 2,800-3,000 cm(-1)) bands and the C=O (at 1,740 cm(-1)) stretching band were investigated in the absence and presence of the chitosan. It was concluded that appropriate combining of the liposomal and chitosan characteristics might be utilized for the improvement of the therapeutic efficacy of liposomes as a drug delivery system.
Collapse
Affiliation(s)
- Mohsen M Mady
- Biophysics Department, Faculty of Science, Cairo University, Giza 12613, Egypt.
| | | | | | | |
Collapse
|
127
|
Amin M, Jaafari MR, Tafaghodi M. Impact of chitosan coating of anionic liposomes on clearance rate, mucosal and systemic immune responses following nasal administration in rabbits. Colloids Surf B Biointerfaces 2009; 74:225-9. [PMID: 19699067 DOI: 10.1016/j.colsurfb.2009.07.024] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2009] [Revised: 04/21/2009] [Accepted: 07/20/2009] [Indexed: 11/16/2022]
Abstract
Liposomes have been identified as effective immunological adjuvants and have potential for the intranasal and oral delivery of protein antigen. Anionic MLV liposomes were prepared by dehydration-rehydration method. For coating, liposomes were incubated in chitosan solution. Efficiency of coating was confirmed by the evaluation of FITC-labelled chitosan-coated liposomes using a fluorescent microscope. Liposomes morphology and size were studied by optical microscope and size analyzer. Mucoadhesion potential of liposomes was evaluated in human nose by gamma-scintigraphy using (99m)Tc-labelled liposomes. Rabbits (4 animals per group) were nasally immunized in weeks 0, 2 and 4 by liposomes encapsulated with 40 Lf TT. Bleedings and lavage collections were taken place in weeks 3 and 6, and IgG and sIgA titers were measured by ELISA method. Liposomes had a mean diameter of 2.38 microm. Loading of TT was 58.7+/-12.4%. The mucoadhesion (clearance rate from nose) of both coated and non-coated liposomes was similar (P>0.05). Among the immunized animals, the highest nasal lavage sIgA titers were seen in non-coated liposomes followed by coated ones. The serum IgG titers (2nd bleeding) in animals immunized by both kinds of liposome were similar (P>0.05), and were lower than the TT solution group (P<0.05). Immunization by i.m. injection of TT solution resulted in the lowest sIgA and highest IgG titers (P<0.05) compared with liposomal groups. The results were indicative of good potential of negatively charged liposomes in the induction of mucosal immunity. Coating of liposomes by chitosan, failed to increase both the residence time of liposomes in nasal cavity and systemic responses. Conversely, coated liposomes could not induce the mucosal responses as efficiently as non-coated liposomes. It seems that the coating of liposomes affected their interaction potential with nasal associated lymphoid tissue cells.
Collapse
Affiliation(s)
- Mohamadreza Amin
- School of Pharmacy, Mashhad University of Medical Sciences, P.O. Box 91775-1365, Mashhad, Iran
| | | | | |
Collapse
|
128
|
Zaru M, Manca ML, Fadda AM, Antimisiaris SG. Chitosan-coated liposomes for delivery to lungs by nebulisation. Colloids Surf B Biointerfaces 2009; 71:88-95. [DOI: 10.1016/j.colsurfb.2009.01.010] [Citation(s) in RCA: 81] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2008] [Revised: 01/05/2009] [Accepted: 01/10/2009] [Indexed: 11/25/2022]
|
129
|
Shende P, Gaud R. Formulation and Comparative Characterization of Chitosan, Gelatin, and Chitosan–Gelatin-Coated Liposomes of CPT-11–HCl. Drug Dev Ind Pharm 2009; 35:612-8. [DOI: 10.1080/03639040802498849] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
130
|
Rinaudo M, Quemeneur F, Pépin-Donat B. Stabilization of Liposomes by Polyelectrolytes: Mechanism of Interaction and Role of Experimental Conditions. ACTA ACUST UNITED AC 2009. [DOI: 10.1002/masy.200950409] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
131
|
Colonna C, Conti B, Genta I, Alpar O. Non-viral dried powders for respiratory gene delivery prepared by cationic and chitosan loaded liposomes. Int J Pharm 2008; 364:108-18. [DOI: 10.1016/j.ijpharm.2008.07.034] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 07/24/2008] [Accepted: 07/29/2008] [Indexed: 01/14/2023]
|
132
|
Malaekeh-Nikouei B, Sajadi Tabassi SA, Jaafari MR. Preparation, Characterization, and Mucoadhesive Properties of Chitosan-Coated Microspheres Encapsulated with Cyclosporine A. Drug Dev Ind Pharm 2008; 34:492-8. [DOI: 10.1080/03639040701744004] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
133
|
Phetdee M, Polnok A, Viyoch J. Development of chitosan-coated liposomes for sustained delivery of tamarind fruit pulps extract to the skin. Int J Cosmet Sci 2008; 30:285-95. [DOI: 10.1111/j.1468-2494.2008.00447.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
134
|
Liang XF, Wang HJ, Luo H, Tian H, Zhang BB, Hao LJ, Teng JI, Chang J. Characterization of novel multifunctional cationic polymeric liposomes formed from octadecyl quaternized carboxymethyl chitosan/cholesterol and drug encapsulation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2008; 24:7147-53. [PMID: 18564860 DOI: 10.1021/la703775a] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Abstract
The design and construction of effective delivery vectors for drugs is very important. We have discovered that octadecyl quaternized carboxymethyl chitosan (OQCMC) in combination with cholesterol (Chol) could form stable vesicles with structure similar to that of conventional liposomes prepared from phosphatidylcholine/cholesterol (PC/Chol). Compared to conventional liposomes, our polymeric liposomes formed by OQCMC/Chol have many excellent features, such as good physical and thermal stability, excellent solubility in water, and high effectiveness in drug encapsulation. Trans-activating transcriptional activator protein (TAT peptide) could be connected on the surface of cationic polymeric liposomes by using cross-linking reagent N-hydroxysuccinimidyl-3-(2-pyridyldithio) propionate (SPDP). Also, oil-soluble magnetic nanoparticles were used to verify the bilayer structure of the polymeric liposomes and their ability to solublize hydrophobic materials. Using different preparation methods, OQCMC/Chol could easily be made into nanoscale particles by encapsulating both hydrophilic and hydrophobic components. We have successfully prepared polymeric liposomes encapsulating quantum dots (QDs), superparamagnetic nanoparticles, or both. Vincristine was also encapsulated in the polymeric liposomes with high drug encapsulation efficiency (90.1%). Vincristine-loaded magnetic polymeric liposomes were stable in aqueous solution and exhibited slow, steady release action over 2 weeks under physiologic pH (7.4). This allows the use of multifunctional cationic polymeric liposomes, such as those developed here from modified chitosan, in various applications such as cancer diagnosis and treatment.
Collapse
Affiliation(s)
- Xiao F Liang
- School of Materials Science and Engineering, Tianjin University, Tianjin 300072, PR China
| | | | | | | | | | | | | | | |
Collapse
|
135
|
Quemeneur F, Rinaudo M, Pépin-Donat B. Influence of polyelectrolyte chemical structure on their interaction with lipid membrane of zwitterionic liposomes. Biomacromolecules 2008; 9:2237-43. [PMID: 18590310 DOI: 10.1021/bm800400y] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
In this paper we extend our previous experimental work on interaction between polyelectrolytes and liposomes. First, the adsorption of chitosan and alkylated chitosan (cationic polyelectrolytes) with different alkyl chain lengths on lipid membranes of liposomes is examined. The amount of both chitosans adsorbed remains the same even if more alkylated polysaccharide has to be added to get saturation if compared with unmodified chitosan. It is demonstrated that alkyl chains do not specifically interact with the lipid bilayer and that electrostatic interaction mechanism governs the chitosan adsorption. The difference observed between unmodified and alkylated chitosans behavior to reach the plateau can be interpreted in terms of a competition between electrostatic polyelectrolyte adsorption on lipid bilayer and hydrophobic autoassociation in solution (which depends on the alkyl chain length). Second, interaction of liposomes with hyaluronan (HA) and alkylated hyaluronan (anionic polyelectrolytes) is analyzed. The same types of results as discussed for chitosan are obtained, but in this case, autoassociation of alkylated HA only occurs in the presence of salt excess. Finally, a first positive layer of chitosan is adsorbed on the lipid membrane, followed by a second negative layer of HA at three different pHs. This kind of multilayer decoration allows the control of the net charge of the composite vesicles. A general conclusion is that whatever the pH and, consequently, the initial charge of the liposomes, chitosan adsorption gives positively charged composite systems, which upon addition of hyaluronan, give rise to negatively charged composite vesicles.
Collapse
Affiliation(s)
- Francois Quemeneur
- Laboratoire Electronique Moleculaire Organique et Hybride/UMR 5819 SPrAM, CEA-CNRS-UJF/INAC/CEA-Grenoble, 38054 Grenoble Cedex 9, France
| | | | | |
Collapse
|
136
|
Mura S, Manconi M, Madrigal-Carballo S, Sinico C, Fadda A, Vila A, Molina F. Composite soy lecithin–decylpolyglucoside vesicles: A theoretical and experimental study. Colloids Surf A Physicochem Eng Asp 2008. [DOI: 10.1016/j.colsurfa.2007.09.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
137
|
Laye C, McClements D, Weiss J. Formation of Biopolymer-Coated Liposomes by Electrostatic Deposition of Chitosan. J Food Sci 2008; 73:N7-15. [DOI: 10.1111/j.1750-3841.2008.00747.x] [Citation(s) in RCA: 144] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
138
|
Khatri K, Goyal AK, Gupta PN, Mishra N, Mehta A, Vyas SP. Surface modified liposomes for nasal delivery of DNA vaccine. Vaccine 2008; 26:2225-33. [PMID: 18396362 DOI: 10.1016/j.vaccine.2008.02.058] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2007] [Revised: 02/14/2008] [Accepted: 02/21/2008] [Indexed: 10/22/2022]
Abstract
The aim of the present work was to investigate the potential utility of glycol chitosan coated liposomes as nasal vaccine delivery vehicle for eliciting viral specific humoral mucosal and cellular immune responses. Plasmid pRc/CMV-HBs(S) encapsulated liposomes were prepared by dehydration-rehydration method and subsequently coated with glycol chitosan by simple incubation method. Liposomes were then characterized for their size, surface charge, entrapment efficiency, and ability to protect encapsulated DNA against nuclease digestion and for their mucoadhesiveness. The liposomes were then administered to mice in order to study their feasibility as nasal vaccine carriers. The developed liposomes possessed +9.8 mV zeta potential and an average vesicle size less than 1 microm and entrapment efficiency of approximately 53%. Following intranasal administration, glycol chitosan coated liposomes elicited humoral mucosal and cellular immune responses that were significant as compared to naked DNA justifying the potential advantage of mucosal vaccination in the production of local antibodies at the sites where pathogens enters the body.
Collapse
Affiliation(s)
- Kapil Khatri
- Drug Delivery Research Laboratory, Department of Pharmaceutical Sciences, Dr. Harisingh Gour Vishwavidyalaya, Sagar 470003, M.P., India
| | | | | | | | | | | |
Collapse
|
139
|
Anxiety and cognitive effects of quercetin liposomes in rats. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2008; 4:70-8. [PMID: 18249157 DOI: 10.1016/j.nano.2007.12.001] [Citation(s) in RCA: 142] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2007] [Revised: 10/24/2007] [Accepted: 12/07/2007] [Indexed: 11/23/2022]
Abstract
Quercetin, an effective flavonol used as an antioxidant, was investigated for its anxiolytic and cognitive activities in male Wistar rats. Oral quercetin (300 mg/kg body weight/day) was compared with oral and intranasal quercetin liposomes (20 microg/day). Quercetin liposomes, in a mixture of egg phosphatidylcholine, cholesterol, and quercetin (2:1:1) and dispersed in 50% polyethylene glycol in water, were approximately 200 nm in mean particle diameter and negative surface charge with a range of encapsulation efficiency of 60% to 80%. Anxiolytic and cognitive-enhancing effects of quercetin, conventional and liposomal, were subjected to elevated plus maze and Morris water maze tests, respectively. Both conventional and quercetin liposomes showed anxiolytic and cognitive-enhancing effects. A lower dose and a faster rate were observed with intranasal quercetin liposomes when compared with oral quercetin, conventional and liposomal. The intranasal quercetin liposomes are effective in the delivery of quercetin to the central nervous system.
Collapse
|
140
|
Kang N, Policova Z, Bankian G, Hair ML, Zuo YY, Neumann AW, Acosta EJ. Interaction between chitosan and bovine lung extract surfactants. BIOCHIMICA ET BIOPHYSICA ACTA-BIOMEMBRANES 2008; 1778:291-302. [DOI: 10.1016/j.bbamem.2007.10.003] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2007] [Revised: 09/27/2007] [Accepted: 10/02/2007] [Indexed: 11/28/2022]
|
141
|
Quemeneur F, Rinaudo M, Pépin-Donat B. Influence of Molecular Weight and pH on Adsorption of Chitosan at the Surface of Large and Giant Vesicles. Biomacromolecules 2007; 9:396-402. [DOI: 10.1021/bm700943j] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Francois Quemeneur
- Laboratoire d’Electronique Moléculaire Organique et Hybride/UMR 5819 SPrAM (CEA-CNRS-UJF)/DRFMC/CEA-Grenoble, 38054 Grenoble Cedex 9, France, and Centre de Recherches sur les Macromolecules Végétales (CERMAV-CNRS) affiliated with Joseph Fourier University, BP53, 38041 Grenoble Cedex 9, France
| | - Marguerite Rinaudo
- Laboratoire d’Electronique Moléculaire Organique et Hybride/UMR 5819 SPrAM (CEA-CNRS-UJF)/DRFMC/CEA-Grenoble, 38054 Grenoble Cedex 9, France, and Centre de Recherches sur les Macromolecules Végétales (CERMAV-CNRS) affiliated with Joseph Fourier University, BP53, 38041 Grenoble Cedex 9, France
| | - Brigitte Pépin-Donat
- Laboratoire d’Electronique Moléculaire Organique et Hybride/UMR 5819 SPrAM (CEA-CNRS-UJF)/DRFMC/CEA-Grenoble, 38054 Grenoble Cedex 9, France, and Centre de Recherches sur les Macromolecules Végétales (CERMAV-CNRS) affiliated with Joseph Fourier University, BP53, 38041 Grenoble Cedex 9, France
| |
Collapse
|
142
|
Zaru M, Mourtas S, Klepetsanis P, Fadda AM, Antimisiaris SG. Liposomes for drug delivery to the lungs by nebulization. Eur J Pharm Biopharm 2007; 67:655-66. [PMID: 17540552 DOI: 10.1016/j.ejpb.2007.04.005] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2006] [Revised: 04/04/2007] [Accepted: 04/11/2007] [Indexed: 11/30/2022]
Abstract
Preparation of drug-loaded freeze-dried (FD) liposomes, designed for delivery to lungs after rehydration/nebulization was investigated. Rifampicin (RIF) incorporating multilamelar (MLV) and dried rehydrated vesicles (DRV); composed of phosphatidylcholine (PC), dipalmitoyloglycero-PC (DPPC) or distearoyloglycero-PC (DSPC), containing or not Cholesterol (Chol), were prepared. Vesicles were characterized for encapsulation efficiency (EE%), size distribution, zeta-potential, stability during freeze drying (FD) and nebulization (nebulization efficiency (NE%) and retention of RIF after nebulization (NER%)). Mucoadhesion and toxicity in A549 cells was measured. RIF EE% was not affected by liposome type but lipid composition was important; Synthetic lipid vesicles (DPPC and DSPC) had higher EE% compared to PC. As Chol increased EE% decreased. Freeze drying (FD) had no effect on EE%, however trehalose decreased EE% possibly due to RIF displacement. NER% was highly affected by lipid composition. Results of NE% and NER% for RIF-loaded liposomes show that DSPC/Chol (2:1) is the best composition for RIF delivery in vesicular form to lungs, by nebulization. Mucoadhesion and A549 cell toxicity studies were in line with this conclusion, however if mucoadhesion is required, improvement may be needed.
Collapse
Affiliation(s)
- Marco Zaru
- Department of Pharmacy, University of Patras, Rio, Greece
| | | | | | | | | |
Collapse
|
143
|
Sukhorukov GB, Rogach AL, Garstka M, Springer S, Parak WJ, Muñoz-Javier A, Kreft O, Skirtach AG, Susha AS, Ramaye Y, Palankar R, Winterhalter M. Multifunctionalized polymer microcapsules: novel tools for biological and pharmacological applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2007; 3:944-55. [PMID: 17487898 DOI: 10.1002/smll.200600622] [Citation(s) in RCA: 154] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
We describe recent developments with multifunctional nanoengineered polymer capsules. In addition to their obvious use as a delivery system, multifunctional nanocontainers find wide application in enzymatic catalysis, controlled release, and directed drug delivery in medicine. The multifunctionality is provided by the following components: 1) Luminescent semiconductor nanocrystals (quantum dots) that facilitate imaging and identification of different capsules, 2) superparamagnetic nanoparticles that allow manipulation of the capsules in a magnetic field, 3) surface coatings, which target the capsules to desired cells, 4) metallic nanoparticles in the capsule wall that act as an absorbing antenna for electromagnetic fields and provide heat for controlled release, and 5) enzymes and pharmaceutical agents that allow specific reactions. The unique advantage of multifunctional microcapsules in comparison to other systems is that they can be simultaneously loaded/functionalized with the above components, allowing for the combination of their properties in a single object.
Collapse
Affiliation(s)
- Gleb B Sukhorukov
- Department of Materials, Queen Mary University of London, Mile End Road, London, E1 4NS, UK
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
144
|
González-Rodríguez ML, Barros LB, Palma J, González-Rodríguez PL, Rabasco AM. Application of statistical experimental design to study the formulation variables influencing the coating process of lidocaine liposomes. Int J Pharm 2007; 337:336-45. [PMID: 17317050 DOI: 10.1016/j.ijpharm.2007.01.024] [Citation(s) in RCA: 72] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2005] [Revised: 12/20/2006] [Accepted: 01/10/2007] [Indexed: 11/18/2022]
Abstract
In this paper, we have used statistical experimental design to investigate the effect of several factors in coating process of lidocaine hydrochloride (LID) liposomes by a biodegradable polymer (chitosan, CH). These variables were the concentration of CH coating solution, the dripping rate of this solution on the liposome colloidal dispersion, the stirring rate, the time since the liposome production to the liposome coating and finally the amount of drug entrapped into liposomes. The selected response variables were drug encapsulation efficiency (EE, %), coating efficiency (CE, %) and zeta potential. Liposomes were obtained by thin-layer evaporation method. They were subsequently coated with CH according the experimental plan provided by a fractional factorial (2(5-1)) screening matrix. We have used spectroscopic methods to determine the zeta potential values. The EE (%) assay was carried out in dialysis bags and the brilliant red probe was used to determine CE (%) due to its property of forming molecular complexes with CH. The graphic analysis of the effects allowed the identification of the main formulation and technological factors by the analysis of the selected responses and permitted the determination of the proper level of these factors for the response improvement. Moreover, fractional design allowed quantifying the interactions between the factors, which will consider in next experiments. The results obtained pointed out that LID amount was the predominant factor that increased the drug entrapment capacity (EE). The CE (%) response was mainly affected by the concentration of the CH solution and the stirring rate, although all the interactions between the main factors have statistical significance.
Collapse
Affiliation(s)
- M L González-Rodríguez
- Department of Pharmaceutical Technology, University of Seville, C/ Prof. García González, 2, 41012 Seville, Spain.
| | | | | | | | | |
Collapse
|
145
|
Carafa M, Marianecci C, Annibaldi V, Di Stefano A, Sozio P, Santucci E. Novel O-palmitoylscleroglucan-coated liposomes as drug carriers: Development, characterization and interaction with leuprolide. Int J Pharm 2006; 325:155-62. [PMID: 16884870 DOI: 10.1016/j.ijpharm.2006.06.040] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2006] [Revised: 06/15/2006] [Accepted: 06/17/2006] [Indexed: 11/23/2022]
Abstract
Polysaccharide-coated liposomes have been studied for their potential use for peptide drug delivery by the oral route because they are able to minimize the disruptive influences on peptide drugs of gastrointestinal fluids. The aim of this work was to synthesize and characterize a modified polysaccharide, O-palmitoylscleroglucan (PSCG), and to coat unilamellar liposomes for oral delivery of peptide drugs. To better evaluate the coating efficiency of PSCG, also scleroglucan (SCG)-coated liposomes were prepared. We studied the surface modification of liposomes and the SCG- and PSCG-coated liposomes were characterized in terms of size, shape, zeta potential, influence of polymer coating on bilayer fluidity, stability in serum, in simulated gastric and intestinal fluids and against sodium cholate and pancreatin. Leuprolide, a synthetic superpotent agonist of luteinizing hormone releasing hormone (LHRH) receptor, was chosen as a model peptide drug. After polymer coating the vesicle dimensions increased and the zeta potential shifted to less negative values. These results indicate that both SCG- and PSCG-coated liposomes surface and DSC results showed that PSCG was anchored on the liposomal surface. The stability of coated-liposomes in SGF, sodium cholate solution and pancreatin solution was increased. From this preliminary in vitro studies, it seems that PSCG-coated liposomes could be considered as a potential carrier for oral administration.
Collapse
Affiliation(s)
- M Carafa
- Dept. Scienze del Farmaco, University G. D'Annunzio, Via dei Vestini, 66100 Chieti, Italy.
| | | | | | | | | | | |
Collapse
|
146
|
Otake K, Shimomura T, Goto T, Imura T, Furuya T, Yoda S, Takebayashi Y, Sakai H, Abe M. One-step preparation of chitosan-coated cationic liposomes by an improved supercritical reverse-phase evaporation method. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2006; 22:4054-9. [PMID: 16618144 DOI: 10.1021/la051662a] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
High-pressure carbon dioxide in contact with water dissolves to form carbonic acid, causing a decrease in pH. By use of these characteristics of a CO2/H2O biphasic system, chitosan-coated cationic liposomes of l-alpha-dipalmitoylphosphatidylcholine were successfully prepared by an improved supercritical reverse-phase evaporation (ISCRPE) method. Liposome-chitosan complexes carrying a positive charge were prepared in a single-step procedure without the use of acid or organic solvent, including ethanol. The maximum trapping efficiency of liposomes prepared by the ISCRPE method was 17%, with or without the addition of chitosan, compared to only 2% for liposomes prepared by the Bangham method. Furthermore, the liposomal dispersion was stable at room temperature in a sealed tube for over 30 days.
Collapse
Affiliation(s)
- Katsuto Otake
- Nanotechnology Research Institute and Research Institute for Innovation in Sustainable Chemistry, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan.
| | | | | | | | | | | | | | | | | |
Collapse
|
147
|
Mu X, Zhong Z. Preparation and properties of poly(vinyl alcohol)-stabilized liposomes. Int J Pharm 2006; 318:55-61. [PMID: 16624507 DOI: 10.1016/j.ijpharm.2006.03.016] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2005] [Revised: 03/09/2006] [Accepted: 03/16/2006] [Indexed: 11/30/2022]
Abstract
The purpose of this work is to evaluate the improvement in physical stability of poly(vinyl alcohol) (PVA) modified liposomes. Liposomes composed of soya phosphatidylcholile (SPC) and cholesterol (1:1 molar ratio) were prepared by reverse phase evaporation method. Two types of interaction between liposome and PVA were investigated: PVA addition into lipid bilayer during liposome preparation and coating of already formed liposomes with PVA. The microparticles system was morphologically characterized by transmission electron microscopy (TEM) and particles analysis. Changes in particles size and zeta potential confirmed the existence of a thick polymer layer on the surface of liposomes. The amount of PVA adsorbing to liposomes and the encapsulation efficiency increased with increasing polymer concentration. The physical stability was evaluated by measuring the release rate of contents at 20 and 37 degrees C, the PVA modified liposomes were more stable than the conventional liposomes. Comparing with PVA-coated liposomes, the liposomes with PVA addition to the bilayer were more stable, and had higher entrapment efficiency.
Collapse
Affiliation(s)
- Xiaomei Mu
- Department of Chemistry & Chemical Engineering, Zhongkai University of Agriculture and Technology, Guangzhou 510225, PR China.
| | | |
Collapse
|
148
|
Kim HJ, Lee CM, Lee YB, Lee KY. Preparation and mucoadhesive test of CSA-loaded liposomes with different characteristics for the intestinal lymphatic delivery. BIOTECHNOL BIOPROC E 2005. [DOI: 10.1007/bf02932287] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
149
|
Lee CM, Lee HC, Lee KY. O-palmitoylcurdlan sulfate (OPCurS)-coated liposomes for oral drug delivery. J Biosci Bioeng 2005; 100:255-9. [PMID: 16243273 DOI: 10.1263/jbb.100.255] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2005] [Accepted: 05/11/2005] [Indexed: 11/17/2022]
Abstract
O-Palmitoylcurdlan sulfate (OPCurS) was applied to the liposomal surface to improve the stability of liposomes. To synthesize OPCurS, curdlan was chemically sulfated and then modified with a palmitoyl derivative. The synthesized OPCurS was characterized by Fourier transform-infrared spectroscopy (FT-IR). OPCurS-coated liposomes prepared by the solvent evaporation method were characterized for size, shape, surface charge, and stability in simulated gastric fluid (SGF) and sodium cholate solution. The sizes of OPCurS-coated liposomes increased with the OPCurS content of liposomes and zeta potential decreased when OPCurS was applied to the liposomal surface. With the increase in the content of OPCurS attached to the liposomal surface, the stability of liposomes in SGF and sodium cholate solution was gradually induced and the stability was most improved at a lipid/OPCurS weight ratio of 1.5. Liposomes not coated with OPCurS released 99.5+/-2.3% of the initial 5-carboxyfluorescein (5-CF) content, whereas OPCurS-coated liposomes released 53.7+/-3.7%. OPCurS on the surface of liposomes suppressed the release of 5-CF. Theses results indicate that OPCurS-coated liposomes can be effectively used as a drug delivery carrier via oral administration.
Collapse
Affiliation(s)
- Chang-Moon Lee
- Interdisciplinary Program of Biomedical Engineering, Chonnam National University, Gwangju 500-757, Republic of Korea
| | | | | |
Collapse
|