Abstract：
:Superparamganetic iron oxide-based contrast agents in magnetic resonance imaging (MRI) have offered new possibility for early detection of lymph nodes and their metastases. According to important role of nanoparticle size in biodistribution, magnetite nanoparticles coated with different polyethylene glycol (PEG) concentrations up to 10/1 PEG/iron oxide weight ratio in an ex situ manner. To predict the PEG-coated nanoparticle behavior in biological media, such as blood stream or tissue, colloidal stability evaluation was performed to estimate the coating endurance in different conditions. Accordingly, optical absorbance measurements were conducted in solutions with different values of pH and NaCl concentrations. The results indicated that at neutral pH condition, nanoparticles treated by 3/1 ratio possessed better stability parameters. Investigating at high pH of 10 resulted in superior stability for bare magnetite nanoparticles due to its higher electrophoretic mobility. Coating material was attacked at acidic solutions which cause samples with higher PEG weight ratio to be settled slower. In various ionic strengths of 10(-5) to 0.1 M, 3/1 ratio samples offered greater resistivity to sedimentation. The nanoparticles were further investigated by exposure to L929 cell and following up the iron uptake within cells. Finally, detection sensitivities in lymph nodes were evaluated. Particle uptake and the most signal reduction for in vivo MRI studies were also obtained by nanoparticles acquiring lower PEG contents that showed better colloidal stability.
journal_name
Int J Pharmjournal_title
International journal of pharmaceuticsauthors
Masoudi A,Madaah Hosseini HR,Shokrgozar MA,Ahmadi R,Oghabian MAdoi
10.1016/j.ijpharm.2012.04.080subject
Has Abstractpub_date
2012-08-20 00:00:00pages
129-41issue
1-2eissn
0378-5173issn
1873-3476pii
S0378-5173(12)00456-5journal_volume
433pub_type
杂志文章abstract：:Conventional nebulisation has the disadvantages of low aerosol output rate and potential damage to macromolecules due to high shear (jet nebulisation) or cavitation (ultrasonic nebulisation). HYDRA (HYbriD Resonant Acoustics) technology has been shown to overcome these problems by using a hybrid combination of surface...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2020.119196
更新日期：2020-04-30 00:00:00
abstract：:The focus of present investigation was to assess the utility of non-destructive techniques in the evaluation of risperidone solid dispersions (SD) with methyl-β-cyclodextrin (MBCD) and subsequent incorporation of the SD into orally disintegrating tablets (ODT) for a faster release of risperidone. The SD was prepared b...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2010.08.025
更新日期：2010-11-15 00:00:00
abstract：:The tight junctions between capillary endothelial cells of the blood-brain barrier (BBB) restricts the entry of therapeutics into the brain. Potential of the intranasal delivery tool has been explored in administering the therapeutics directly to the brain, thus bypassing BBB. The objective of this study was to develo...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2020.119499
更新日期：2020-08-30 00:00:00
abstract：:To enhance the medicinal activity of bee venom (BV) acupuncture, bee venom was loaded into biodegradable poly(D,L-lactide-co-glycolide) nanoparticles (BV-PLGA-NPs) by a water-in-oil-in-water-emulsion/solvent-evaporation technique. Rat formalin tests were performed after subcutaneous injection of BV-PLGA-NPs to the Zus...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2009.06.034
更新日期：2009-10-01 00:00:00
abstract：:An innovative approach to improve drug delivery is the use of glycerol monooleate nanoparticles. Numerous studies describe their high versatility, low toxicity and ability to carry relatively high loads of conjugated compounds including scarcely soluble ones, providing sustained drug release and increasing drug diffus...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2018.01.035
更新日期：2018-03-25 00:00:00
abstract：:Docetaxel (DTX) is one of the important antitumor drugs, being used in several common chemotherapies to control leading cancer types. Severe toxicities of the DTX are prominent due to sudden parenteral exposure of desired loading dose to maintain the therapeutic concentration. Field of nanotechnology is leading to res...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章,评审
doi：10.1016/j.ijpharm.2017.07.018
更新日期：2017-08-30 00:00:00
abstract：:The fluid dynamics in the flow-through cell (USP apparatus 4) has been predicted using the mathematical modeling approach of computational fluid dynamics (CFD). The degree to which flow structures in this apparatus can be qualified as 'ideal' both spatially and temporally has been assessed. The simulations predict the...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2009.04.012
更新日期：2009-07-06 00:00:00
abstract：:The pharmacokinetic parameters of nitrendipine were determined in 40 healthy male volunteers and a very high degree of intersubject variability was observed (CV = 39-71%). Since the distribution of nitrendipine to erythrocytes could influence the overall pharmacokinetic variability the correlation between hematocrit a...
journal_title：International journal of pharmaceutics
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0378-5173(00)00683-9
更新日期：2001-03-14 00:00:00
abstract：:Finasteride is indicated orally in the treatment of androgenetic alopecia and some other pilosebaceous unit (PSU) disorders. We wished to investigate whether topical application of finasteride-containing vesicles (liposomes and niosomes) could enhance drug concentration at the PSU, as compared to finasteride hydroalco...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2006.05.041
更新日期：2006-10-12 00:00:00
abstract：:The pharmacokinetics of miconazole were studied after intravenous administration to six sheep (4 mg/kg) of three aqueous solutions: a marketed micellar solution containing polyoxyl-35 castor oil (Daktarin IV(R)) was compared with two solutions both containing 50 mM lactic acid and a cyclodextrin derivative (100 mM HP-...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(98)00403-7
更新日期：1999-03-25 00:00:00
abstract：:Cinnarizine was loaded in the lipid emulsion to develop an intravenous formulation with good physical and chemical stability. High-pressure homogenization was used to prepare the lipid emulsion. The factors influencing the stability of cinnarizine lipid emulsion, such as different drug loading methods, pH, temperature...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2009.02.006
更新日期：2009-05-21 00:00:00
abstract：:From discovery synthesis of a zwitterionic pharmaceutical compound, 4-{[4-({[(3-isopropyl-2-oxo-2,3-dihydro-1H-benzimidazol-1-yl)carbonyl]amino}methyl)piperidin-1-yl]methyl}tetrahydro-2H-pyran-4-carboxylic acid (compound A), two anhydrous ZW-I and ZW-II and two hydrate forms ZW-III and ZW-IV were identified. Although ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2007.08.026
更新日期：2008-02-28 00:00:00
abstract：:The aim of this study was to investigate the feasibility of the transdermal delivery of catechins and caffeine from green tea extract. Drug-in-adhesive patches containing 1.35, 1.03, 0.68, and 0.32 mg cm(-2) green tea extract were formulated and the dissolution of (-)-epigallocatechin gallate (EGCg), (-)-epigallocatec...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2004.06.007
更新日期：2004-09-28 00:00:00
abstract：:Ethionamide (ETH) is a second line antitubercular drug suffering from poor solubility in water and strong tendency to crystallize. These drawbacks were addressed by loading ETH in β-cyclodextrin (βCyD)-based carriers. The drug was incorporated in a molecular state avoiding crystallization even for long-term storage an...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2017.05.041
更新日期：2017-10-15 00:00:00
abstract：:Aerosolized contrast agents may improve the resolution of biomedical imaging modalities and enable more accurate diagnosis of lung diseases. Many iodinated compounds, such as diatrizoic acid, have been shown to be safe and useful for radiographic examination of the airways. Formulations of such compounds must be impro...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2010.03.009
更新日期：2010-05-31 00:00:00
abstract：:The relationships between data of passage through Caco-2 cultured cell lines (log Papp), taken from the literature, for 38 structurally unrelated compounds and both n-octanol lipophilicity parameters (log P(N) and log D(7.4)) and phospholipid affinity indexes were investigated. Phospholipid affinity(log k W(IAM)) was ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2016.01.019
更新日期：2016-03-16 00:00:00
abstract：:Public engagement in medication management has become more and more important in promoting population health. A public engagement workshop attended by 78 members of the geriatric community, family carers as well as professionals from academic research, industry and regulatory agencies entitled 'How to improve medicine...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2013.11.024
更新日期：2014-01-01 00:00:00
abstract：:Insulin (INS) was incorporated into complexes with the block polyelectrolyte quaternized poly[3,5-bis(dimethylaminomethylene)hydroxystyrene]-b-poly(ethylene oxide) (QNPHOSEO), which is a cationic-neutral block polyelectrolyte. Light scattering techniques are used in order to examine the size, the size distribution and...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2015.06.013
更新日期：2015-08-01 00:00:00
abstract：:Objective was to develop and characterize nano-edetate calcium disodium (Ca-Na(2)EDTA) dry powder inhaler (DPI), and assess its in vitro and in vivo deposition using pharmacoscintigraphy techniques. Factors influencing nanoparticle formation including concentration of drug, polymer solution and stirring rate were dete...
journal_title：International journal of pharmaceutics
pub_type： 临床试验,杂志文章
doi：10.1016/j.ijpharm.2011.06.038
更新日期：2011-09-15 00:00:00
abstract：:The self-organizing complexes with hyaluronic acid (HA) and polydopamine (PDA), an adhesion mediator via hydrogen bonding, were investigated for use as protein drug carriers. The complexes were prepared with HA of different molecular weights (20 kDa and 200 kDa) and various molar ratios of dopamine and lysozyme, a mod...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2018.03.007
更新日期：2018-05-05 00:00:00
abstract：:The purpose of the present study was to design an optimal ketoprofen gel with appropriate penetration rate, shortened lag time and acceptable skin irritation. The combination of different mechanism enhancers including nonivamide, menthol and ethanol were used as multi-enhancers for producing a synergistic enhancement ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2007.02.020
更新日期：2007-07-18 00:00:00
abstract：:The purpose of this study was to investigate solid lipid nanoparticles (SLN) hydrogel for transdermal iontophoretic drug delivery. Triamcinolone acetonide acetate (TAA), a glucocorticoids compound, was employed as the model drug. SLN containing the drug triamcinolone acetonide acetate (TAA-SLN) and their carbopol gel ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2008.08.013
更新日期：2008-11-19 00:00:00
abstract：:Our capacitance and conductance measurements on reconstituted planar lipid bilayers (BLM) suggest an insertion of the flavonoid quercetin (QCT) in the membranes, which is concentration- and pH-dependent. Interaction of the flavonoid with the membrane has no impact on either structure or integrity of the lipid bilayer....
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(00)00503-2
更新日期：2000-09-15 00:00:00
abstract：:Pulmonary hypertension (PAH) is a condition of the lungs characterised by an elevated arterial pressure and increased vascular resistance. Existing medications have to be administered frequently, resulting in non compliance by patients. Little work has been reported to date where microspheres have been developed to co...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2013.04.011
更新日期：2013-06-25 00:00:00
abstract：:Felodipine is a calcium channel blocker, which shows low oral bioavailability (<15%) owing to poor water solubility and high first pass metabolism. The aim of the present investigation was to study the surface science (dynamic surface tension) and characteristics of microemulsion (Capmul MCM, Tween 20 and polyethylene...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2021.120202
更新日期：2021-01-23 00:00:00
abstract：:This study focuses on the development of an automated image analysis method to extract information on nucleation and crystal growth from polarized light micrographs. Using the developed image analysis method, four parameters related to nucleation and crystal growth could be extracted from the images. These parameters ...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2012.04.074
更新日期：2012-08-20 00:00:00
abstract：:Maximum absorbable dose refers to the maximum amount of an orally administered drug that can be absorbed in the gastrointestinal tract. Maximum absorbable dose, or D(abs), has proved to be an important parameter for quantifying the absorption potential of drug candidates. The purpose of this work is to validate the us...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2012.02.003
更新日期：2012-05-10 00:00:00
abstract：:The preparative method of a block copolymer of poly(dl-lactic acid) (PLA) and methoxypolyethylene glycol amine (MeO-PEG(N)), named PLA-(MeO-PEG), was refined. The degree of introduction of MeO-PEG(N) into PLA increased up to 55% (mol/mol) using a dichloromethane/methanol mixture (1:1, v/v) as a solvent at the reductiv...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/j.ijpharm.2006.02.057
更新日期：2006-07-24 00:00:00
abstract：:This work investigated the permeation of primaquine across full-thickness excised human skin from two acrylate transdermal adhesives. Primaquine base was formulated with National Starch 387-2516 and 387-2287 to provide aluminium foil-backed 1-cm diameter patches, each loaded with 10 mg drug. Other patches were prepare...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(99)00215-x
更新日期：1999-10-28 00:00:00
abstract：:The use of experimental design for the robustness testing of a flow-through dissolution method (Ph Eur/USP Apparatus 4) for atovaquone, one of the drug substances in a dual-active anti-malarial tablet formulation, Malarone tablets, is described. This procedure was developed to overcome the suppression of the atovaquon...
journal_title：International journal of pharmaceutics
pub_type： 杂志文章
doi：10.1016/s0378-5173(00)00509-3
更新日期：2000-09-25 00:00:00
