Abstract：
:Liposomes, coated with transferrin (Tf)-coupled polyethylene glycol are considered to be potent carriers for drug delivery to various organs via receptor-mediated endocytosis. Since Tf receptors were ubiquitously expressed in various organs, additional perturbation of the liposomes such as regulation of the size may be required to exhibit the tissue selectivity. In the present study, the effect of size on the uptake of transferrin-coupled polyethylene glycol liposomes (Tf-PEG-L) to various organs was investigated. In liver and brain, Tf-dependent uptake was found to be dependent on the size of the liposomes used. In small liposomes with a diameter of 60-80 nm, Tf-PEG-L was taken up to these organs more efficiently than PEG-L. This Tf-dependent uptake for small liposomes decreased by the high dose administration, suggested that Tf-PEG-L is taken up via Tf receptor-mediated endocytosis even under the physiological condition, in which plasma concentration of endogenous Tf remains high. On the other hand, Tf receptor-mediated uptake was also observed in the heart, but size-dependency was not observed in this case. Collectively, these results indicate that size dependency in the uptake of Tf-PEG-L is tissue-dependent and therefore, controlling the size of Tf-PEG-L may be useful for the success of tissue targeting.
journal_name
Int J Pharmjournal_title
International journal of pharmaceuticsauthors
Hatakeyama H,Akita H,Maruyama K,Suhara T,Harashima Hdoi
10.1016/j.ijpharm.2004.05.025keywords:
subject
Has Abstractpub_date
2004-08-20 00:00:00pages
25-33issue
1-2eissn
0378-5173issn
1873-3476pii
S0378517304003242journal_volume
281pub_type
杂志文章abstract：:The inherent instability of micelles remains a main challenge for antitumor drug delivery, the objective of this study is to prepare and characterize the ion-fixed mixed micelles with significantly improved stability. The mixed micelles and ion-fixed mixed micelles combining the carboxy-containing PLA (PLA-COO(-)) and...
journal_title：International journal of pharmaceutics
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abstract：:The increasing tendency to enhance consumer products with added functionality is leading to ever more complex products. Nowadays more and more particulate products are coated to give the product specific functionalities. An appropriate approach is needed to be able to satisfy customer's requirements. In this work, thr...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2009.10.007
更新日期：2010-01-15 00:00:00
abstract：:Composites of paracetamol loaded poly(ethylene glycol) (PEG) with a naturally derived and partially synthetic layered silicate (nanoclay) were prepared using hot-melt extrusion. The extent of dispersion and distribution of the paracetamol and nanoclay in the PEG matrix was examined using a combination of field emissio...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.06.027
更新日期：2008-11-03 00:00:00
abstract：:The aim of the present work was to evaluate the effect of sustained release of potassium chloride semi-solid matrices prepared with different kinds and added amounts of Gelucires by the in vitro dissolution test and in vivo oral absorption study, and compared with a commercial product (slow-K). The results indicating ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(02)00264-8
更新日期：2002-08-28 00:00:00
abstract：:The skin represents an attractive site for the localised gene therapy of dermatological pathologies and as a potential antigen bioreactor following transdermal delivery. Potential also exists for the gene therapy of skin as a cosmetic intervention. The most exploited non-viral gene delivery system involves the complex...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(00)00336-7
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abstract：:Thermogels, used as multi-functional drug-loading materials, have properties that mainly rely on their gelator structure. Although a large variety of organogel systems are used as drug delivery carriers, relatively few have been investigated in terms of their structure-property correlations based on amino acid derivat...
journal_title：International journal of pharmaceutics
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doi：10.1016/j.ijpharm.2018.06.043
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abstract：:A series of thermoresponsive-co-biodegradable polymers, containing varying molar ratios of N-isopropylacrylamide (NIPA) and poly-lactic acid diacrylate macromer (PLAM) were prepared and characterised. Chemical structures were confirmed by nuclear magnetic resonance (NMR) and Fourier transform infrared (FTIR). The hydr...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.08.036
更新日期：2009-01-21 00:00:00
abstract：:In the present study, we developed and evaluated an in situ gelling system based on hexanoyl glycol chitosan (H-GCS) for enhanced ocular bioavailability. An aqueous solution of H-GCS exhibited a typical sol-gel transition at 32 °C. The formed H-GCS hydrogel was characterized by rheology and scanning electron microscop...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
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abstract：:The pharmaceutical industry is strictly regulated, where precise and accurate control of the end product quality is necessary to ensure the effectiveness of the drug products. For such control, the process and raw materials variability ideally need to be fed-forward in real time into an automatic control system so tha...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2015.09.029
更新日期：2015-11-10 00:00:00
abstract：:Self-emulsifying drug delivery systems (SEDDS) are lipid formulations that improve solubility and oral bioavailability of the incorporated drug with poor biopharmaceutical properties. As liquids they are traditionally filled into soft or hard capsules. Transformation of SEDDS into solid dosage form has been extensivel...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章,评审
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更新日期：2017-11-30 00:00:00
abstract：:The objectives of this study were to generate novel thermo and pH dual responsive poly(amidoamine) (PAMAM) via precise surface engineering, and investigate the interplay of dendrimer stimuli-responsiveness and the loading and release properties of a model agent, vitamin E acetate (VEAc). A higher dendrimer generation ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2013.12.031
更新日期：2014-02-28 00:00:00
abstract：:This study demonstrates the use of optical coherence tomography (OCT) to simultaneously characterize the roughness of the tablet core and coating of pharmaceutical tablets. OCT is a high resolution non-destructive and contactless imaging methodology to characterize structural properties of solid dosage forms. Besides ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2017.12.023
更新日期：2018-01-30 00:00:00
abstract：:This study was aimed at developing a liposome delivery system for a new and potential antitumor lipophilic prodrug of 5-fluorouracil (5-Fu)-N(3)-O-toluyl-fluorouracil (TFu), intended to improve the bioavailability and therapeutic efficacy of 5-Fu by oral and intravenous administration. TFu-loaded liposomes were prepar...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2007.11.017
更新日期：2008-04-02 00:00:00
abstract：:Freeze-drying of three different forms of gene delivery systems was performed using a controlled two-step drying process and 10% sucrose as lyoprotectant. Complexes of pCMVL plasmid with transferrin-conjugated polyethylenimine, adenovirus-enhanced transferrinfection consisting of pCMVL/transferrin-polylysine complexes...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(97)00244-5
更新日期：1997-11-28 00:00:00
abstract：:The purpose of this work was to investigate distribution, transition, bioadhesion and release behaviors of insulin loaded pH-sensitive nanoparticles in the gut of rats, as well as the effects of viscosity agent on them. Insulin was labeled with fluorescein isothiocyanate (FITC). The FITC-insulin solution and FITC-insu...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2006.08.040
更新日期：2007-02-01 00:00:00
abstract：:Two different PLGA samples (Resomer 502 and Resomer 506), either alone or in combinations, were used to prepare microcapsules. Microcapsules were prepared using a double emulsion solvent evaporation technique. The efficiency of encapsulation increased significantly when a mixture of 1 part Resomer 506 and 7 parts Reso...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2003.10.019
更新日期：2004-02-11 00:00:00
abstract：:It is difficult to effectively eradicate C. albicans using traditional antifungal agents, mainly because the low permeability of the C. albicans cell wall creates strong drug resistance. The aim of this study was to investigate the synergistic fungicidal effect and the underlying mechanisms of low-frequency and low-in...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2018.03.033
更新日期：2018-05-05 00:00:00
abstract：:The simultaneous skin permeation of drug and penetration enhancer have been studied in vitro. Simple formulations of mefenamic acid in PEG400 incorporating various proportions of ethanol or 1,8-cineole were prepared and applied to porcine ear skin in diffusion cells under infinite conditions. Receptor phases were assa...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2006.05.018
更新日期：2006-09-14 00:00:00
abstract：:The development of new nonviral vectors characterized by high transfection efficiency and low cytotoxicity remains an important challenge in the field of gene delivery. Unsymmetrical bolaamphiphiles (bolas) appear as new emerging candidates for this application. In this work, new unsymmetrical bolas, bearing neutral l...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2011.12.026
更新日期：2012-02-28 00:00:00
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更新日期：2018-07-10 00:00:00
abstract：:Electrospun composite zein/eudragit nanofibers were developed with an aim to deliver two different classes of drugs simultaneously that would restrict/compensate the adverse effects of non-steroidal anti-inflammatory drugs (NSAIDs). Co-administration of proton pump inhibitors is beneficial for patients consuming NSAID...
journal_title：International journal of pharmaceutics
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更新日期：2012-11-15 00:00:00
abstract：:Ibuprofen (IBU) was chosen as a model drug to investigate the drug delivery rate. Mesoporous MCM-41 has been charged with ibuprofen (MCM-41_IBU). Calcium alginate was applied to encapsulate free drug and the mesoporous material. The system with double barrier demonstrated a slower release of IBU than free ibuprofen-lo...
journal_title：International journal of pharmaceutics
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更新日期：2014-09-10 00:00:00
abstract：:Sodium cromoglicate is an antiasthmatic and antiallergenic drug used in inhalation therapy and commonly administered by a dry powder inhaler. In the present study we sought to examine the feasibility of producing nanoporous microparticles (NPMPs) of this hydrophilic material by adaptation of a spray drying process pre...
journal_title：International journal of pharmaceutics
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更新日期：2011-02-28 00:00:00
abstract：:The purpose of this research is to evaluate the effect of self-micelle formation and incorporation of lipid in the formulation on absorption of ginsenosides Rg1 and Rb1 from intestinal tract in rats. Ginsenosides Rg1 and Rb1 were extracted from Panax notoginseng saponins (PNS). The critical micellar concentration (CMC...
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更新日期：2008-08-06 00:00:00
abstract：:Freeze-drying is the preferred method to manufacture proteins in their solid state thus the understanding of the relationship between cycle parameters and cake properties remains of great interest. The present study aims to investigate the influence of the freezing conditions in the material properties at different la...
journal_title：International journal of pharmaceutics
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更新日期：2020-11-30 00:00:00
abstract：:As a new oral drug delivery system for colon targeting, enteric coated timed-release press-coated tablets (ETP tablets) were developed by coating enteric polymer on timed-release press-coated tablets composed of an outer shell of hydroxypropylcellulose and core tablet containing diltiazem hydrochloride (DIL) as a mode...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
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更新日期：2000-08-25 00:00:00
abstract：:An increased number of amorphous formulations of poorly water soluble drugs are being introduced into the market due to their higher transient solubility and thus faster absorption and higher bioavailability. While most amorphous drug products contain a single drug substance, there is a growing trend towards co-formul...
journal_title：International journal of pharmaceutics
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更新日期：2015-12-30 00:00:00
abstract：:The study investigated the effects of different combined top-down and bottom-up nanocrystallization technologies on particle size and solid state of avanafil nanoparticles. Combined antisolvent precipitation-ultrasonication (sonoprecipitation) technique was adopted to prepare 18 formulas according to 32.21 factorial d...
journal_title：International journal of pharmaceutics
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更新日期：2017-01-30 00:00:00
abstract：:rhPTH1-34 is clinically used for osteoporosis treatment. However, this peptide drug has no oral bioavailability because of proteolysis and low membrane permeability in gastrointestinal gut. This study explored the possibility of absorption enhancement for rhPTH1-34 through the oral delivery of the microemulsion. The m...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2011.08.029
更新日期：2011-11-25 00:00:00
abstract：:Low dose micro-tablets with acceptable quality attributes, specifically content uniformity (CU), would not only enhance the dose flexibility in the clinic, but also decrease excipient burden in pediatric population. Considering the CU challenges associated with directly compressed low dose micro-tablets, in this study...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2020.119571
更新日期：2020-09-25 00:00:00
